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EP2189650B1 - Fuel injection system - Google Patents

Fuel injection system Download PDF

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Publication number
EP2189650B1
EP2189650B1 EP10153017A EP10153017A EP2189650B1 EP 2189650 B1 EP2189650 B1 EP 2189650B1 EP 10153017 A EP10153017 A EP 10153017A EP 10153017 A EP10153017 A EP 10153017A EP 2189650 B1 EP2189650 B1 EP 2189650B1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
injection valve
connecting body
fuel
injection device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP10153017A
Other languages
German (de)
French (fr)
Other versions
EP2189650A2 (en
EP2189650A3 (en
Inventor
Ingo Rettig
Martin Riemer
Thilo Bolz
Thomas Fuerst
Goekhan Guengoer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE200510009740 external-priority patent/DE102005009740A1/en
Priority claimed from DE200510020380 external-priority patent/DE102005020380A1/en
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2189650A2 publication Critical patent/EP2189650A2/en
Publication of EP2189650A3 publication Critical patent/EP2189650A3/en
Application granted granted Critical
Publication of EP2189650B1 publication Critical patent/EP2189650B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • F02M55/025—Common rails
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/803—Fuel injection apparatus manufacture, repair or assembly using clamp elements and fastening means; e.g. bolts or screws
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/85—Mounting of fuel injection apparatus
    • F02M2200/853—Mounting of fuel injection apparatus involving use of quick-acting mechanism, e.g. clips
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/85—Mounting of fuel injection apparatus
    • F02M2200/856—Mounting of fuel injection apparatus characterised by mounting injector to fuel or common rail, or vice versa
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/85—Mounting of fuel injection apparatus
    • F02M2200/858—Mounting of fuel injection apparatus sealing arrangements between injector and engine

Definitions

  • the invention relates to a fuel injection device according to the preamble of claim 1.
  • the fastening device comprises a sleeve which is clamped between a shoulder of the fuel rail and a shoulder of the fuel injection valve and is formed of an elastic material. Due to its tubular structure, the sleeve can transfer the hold-down forces to the fuel injector only to a limited extent effectively.
  • the claimed by the shoulders of the fuel injection valve and fuel distributor surfaces of serving as holddown sleeve represent the manufacturing in the production of the blank of the sleeve resulting from manufacturing cutting edges.
  • the fuel injector is inserted into a receiving bore of the cylinder head and is supported against a support ring, which at a radial extending shoulder of the receiving bore rests.
  • the support ring is rounded towards the fuel injection valve and serves as a bearing point of the fuel injection valve in the receiving bore of the cylinder head.
  • the support ring may be made of an elastic material and provides for centering and a slight compensation movement of the fuel injection valve in the receiving bore. The tilting movement allows radial tolerance compensation between fuel injector and fuel rail. About an additional clamping of the fuel rail on the cylinder head by means of screws, the sleeve is clamped. This creates a spring force which acts on the fuel injection valve and holds this down against the combustion pressure.
  • This design has the consequence that both by the hold-down force and by the fuel in the fuel distributor line inside high pressure of the fuel injection valve is pressed over the support ring in the cylinder head so that an undesirably high structure-borne sound transmission from the fuel injection valve into the cylinder head takes place in the negative Way clearly audible.
  • a fuel injection device for fuel injection systems with at least one fuel injection valve.
  • the fuel injector has a receiving bore for the fuel injector disposed in a cylinder head.
  • the fuel injector has a fuel rail with at least one connection piece, in which the fuel injection valve is partially overlapped.
  • a connecting body in the form of a cup-shaped bobnuss is arranged such that the fuel injection valve is held in it, that the fuel injection valve and the connecting body are introduced investment free to all not axially parallel to the fuel injection valve extending surfaces or walls of the receiving bore of the cylinder head.
  • the fuel distributor line is fastened to the cylinder head by means of connecting means B, a damping disk being provided between the bolt-like connecting means B and the cylinder head.
  • the fuel injection device with the characterizing features of claim 1 has the advantage that the structure-borne sound transmission from the fuel injection valve is significantly reduced in the cylinder head.
  • the fuel injection valve is arranged in the receiving bore of the cylinder head such that it is introduced system-free to all not axially parallel to the fuel injection valve extending surfaces or walls of the receiving bore.
  • the connecting body according to the invention advantageously allows a tilting movement of the fuel injection valve for radial tolerance compensation between the cylinder head and the fuel distributor line.
  • connecting body tubular, sleeve-shaped or cup-shaped It is particularly advantageous to make the connecting body tubular, sleeve-shaped or cup-shaped and to connect it firmly to the connecting piece of the fuel distributor line by means of a non-material connection, in particular a press, screw, clip, latching or snap connection. In this case, this connection can still be secured with a lock nut or a locking ring.
  • a non-material connection in particular a press, screw, clip, latching or snap connection.
  • this connection can still be secured with a lock nut or a locking ring.
  • Such compounds make it possible, in particular, advantageously Allow tilting movement of the fuel injection valve for radial tolerance compensation between the cylinder head and fuel rail.
  • connection piece In addition to the non-material connections mentioned, it is also conceivable to connect the connecting body or intermediate components cooperating with the connecting body to the connecting piece in a material-locking manner, e.g. using laser welding, resistance welding or soldering. In addition, combinations of form, force and material connection for the desired connections can be used on the connection piece.
  • damping disks in the connection region of the fuel distributor line and cylinder head. These damping disks can be used simply or twice in the region of each screw connection of the fuel distributor line to the cylinder head, so that the high-pressure injection system is even more effectively decoupled from the cylinder head and sound-insulated.
  • the hold-down as punching-bending part and shape and obstruct the fuel injector that the stress of bending stress surfaces of the inclined sections and abutment portions of the blank perpendicular to the cutting edges, which are in the dissolution of the blank for the Hold-downs from the corresponding sheet arise.
  • the permanent load capacity of the stressed portions of the hold-down bracket of the hold-down can be increased and achieve an optimum hold-down force on the fuel injection valve for secure fixation in the receiving bore.
  • FIG. 1 is shown as a first embodiment, a valve in the form of an injection valve 1 for fuel injection systems of mixture-compression spark-ignited internal combustion engines in a side view.
  • the fuel injection valve 1 is part of a fuel injection device according to the invention.
  • a downstream end of the fuel injection valve 1 which is designed in the form of a direct-injection injector for injecting fuel directly into a combustion chamber of the internal combustion engine, installed in a receiving bore 9 of a cylinder head 17 indicated only schematically.
  • a sealing ring 2 in particular of Teflon®, ensures optimum sealing of the fuel injection valve 1 with respect to the wall of the receiving bore 9 of the cylinder head 17.
  • the fuel injection valve 1 has at its inlet-side end 3 a plug connection to a fuel distributor line 4, which is sealed by a sealing ring 5 between a connection piece 6 of the fuel distributor line 4, which is shown in section, and an inlet connection 7 of the fuel injection valve 1.
  • the fuel injection valve 1 has an electrical connection plug 8 for the electrical contacting for actuating the fuel injection valve 1.
  • a holding-down device 10 is provided between the fuel injection valve 1 and the connecting piece 6.
  • the hold-down 10 is designed as a bow-shaped component, e.g. as punching-bending part.
  • the hold-down 10 has a part-ring-shaped base element 11, wherein this base element 11, which does not rotate through 360 °, but e.g. only an extension of about 250 ° to 320 °, is supported on a shoulder 12 of the fuel injection valve 1.
  • axially resilient hold-down bracket 13 of the hold-down 10 abuts a downstream end surface 14 of the connecting piece 6 to the fuel rail 4 in the installed state.
  • the connecting piece 6 of the fuel distributor line 4 has at its downstream end a partially annular circumferential, protruding collar 15, on which the end face 14 is formed to bear the blank holder 10 with its hold-down bracket 13.
  • the hold-down device 10 is interrupted, the hold-down device 10 itself forms a closed bracket element, since the hold-down bar 13 is connected endlessly to the base element 11. In this way, the hold-down 10 can surround the fuel injector 1 and still allows the passage of the electrical connector plug 8.
  • the hold-down bar 13 protrudes with its resilient brackets from the connector 8 away.
  • the hold-down 10 is removed, for example, by punching, eroding or laser cutting from sheets of spring steel or stainless steel (with a thickness of about 1.5 mm) and subsequently brought into the desired shape by means of bending.
  • the hold-down device 10 has the advantage that the surfaces of the hold-down 10 that are subjected to bending stress, in particular oblique sections and contact sections, are perpendicular to the cutting edges run, which are defined in the extraction of the blank for the blank holder 10 from the corresponding sheet.
  • fuel injection valves are installed in receiving bores of a cylinder head such that they rest directly or indirectly via support rings on radially extending shoulders of the receiving bores.
  • Such a structure has the consequence that the fuel injection valve is pressed in such a way in the cylinder head both by the hold-down force of resilient downers and fittings or tension of the fuel rail on the cylinder head as well as by the fuel in the fuel supply line adjacent high pressure of the fuel, that an undesirably high structure-borne noise transmission from Fuel injection valve takes place in the cylinder head, which can be clearly audible in a negative way.
  • the inventive measures the structure-borne sound transmission from the fuel injector 1 in the cylinder head 17 is significantly reduced. This is achieved in that the fuel injection valve 1 is connected directly to the fuel distributor line 4 via a connecting body 18, but is largely decoupled from the receiving bore 9 of the cylinder head 17.
  • the fuel injection valve 1 is arranged in the receiving bore 9 of the cylinder head 17 such that it is introduced system-free to all not axially parallel to the fuel injector 1 extending surfaces or walls of the receiving bore 9.
  • the fuel injection valve 1 is suspended in the connecting body 18.
  • the fuel injector 1 is engaged by a retaining collar 21 or more retaining collar segments of the connecting body 18, so that the fuel injection valve 1 with respect to a radially extending shoulder 22 of the receiving bore 9 spaced freely suspended.
  • the connecting body 18 has another, e.g. slit-like opening 23 into which engages the collar 15 of the connecting piece 6 as well as in the recess 19 for secure attachment of the fuel injection valve 1 and the connecting body 18 to the fuel distribution line 4.
  • the fuel distributor line 4 is fastened to the cylinder head 17 by means of connecting means 25, in the illustrated exemplary embodiment by means of screws.
  • connecting means 25 in the illustrated exemplary embodiment by means of screws.
  • damping disks 26 in this connection region of the fuel distributor line 4 and cylinder head 17.
  • damping discs 26 may be disposed in the region below the screw head with a support directly to the fuel rail 4 and / or with a support directly to the cylinder head 17, so that the high-pressure injection system consisting of fuel manifold 4 and a plurality of fuel injectors 1 to the cylinder head 17 out even more decoupled and is better soundproofed.
  • the force exerted on the connecting means 25 can be reduced because the force acting on the fuel injector 1 of the fuel under high pressure by the connecting body 18 according to the invention directly received positively at the junction of fuel injector 1 and fuel manifold 4 and not via the connecting means 25 is headed.
  • FIG. 2 is a second embodiment of a erfindunmultien fuel injector shown, in which figure and in all other figures, the representation of the connecting piece 6 of the fuel rail 4, the fuel injection valve 1 and the connecting body 18 is limited.
  • a sleeve is provided as a connecting body 18, which defines the distance between the end surface 14 of the connecting piece 6 and the shoulder 12 on the fuel injection valve 1.
  • the connecting body 18 runs, for example only around 270 ° and has a recess 19 for the connector 8 of the fuel injection valve 1.
  • the sleeve-shaped connector body 18 is fixedly connected both to the end surface 14 and on the shoulder 12 with the fuel rail 4 and the fuel injection valve 1.
  • the fixed connection is produced, for example, by welding, in particular laser welding, wherein welds or welds 27 can be provided.
  • FIG. 3 a third embodiment of a erfindunmultien fuel injection device is shown.
  • an annular connecting body 18 is provided, which engages under the fuel injection valve 1 on a flange 28.
  • this flange 28 In direct operative connection with this flange 28 are, for example, two axial screws 29, which are supported on the one hand in a receiving bore 30 of the fuel distribution line 4, which is located for example on a lateral shoulder of the fuel distribution line 4, and on the other hand engage in the connecting body 18. In this way, the fuel injection valve 1 can be pulled into the connecting piece 6 into it.
  • the connecting body 18 is designed, for example, annularly encircling, wherein the fuel injector 1 inwardly projecting in the region of the two axial screws 29, for example, two gripping portions 31 are provided which engage under the flange 28 directly.
  • the hold-down 10 is shown in this figure and in all other figures only symbolically as a spring, the hold-down 10 in an ideal manner as ironing element according to FIG. 1 and the corresponding description FIG. 1 is trained.
  • the hold-down 10 is similar to the first embodiment according to FIG. 1 between the end face 14 of the connecting piece 6 and the flange 28 is clamped to the fuel injection valve 1.
  • FIG. 4 shows a fourth embodiment of a erfindunmultien fuel injection device is shown.
  • This fuel injection device is characterized in that a connecting body 18 is formed, which engages on the one hand with a retaining collar 21, the fuel injector 1 in the region of a housing shoulder 20 and on the other hand via a non-material connection, eg a clip connection with the connecting piece 6 is connected.
  • the connecting body 18 is tubular and has to reach through the connector 8 of the fuel injector 1 a recess 19. Outside of this recess 19, the connecting body 18 may be performed by 360 ° rotating.
  • the fuel injection valve 1 is engaged by the retaining collar 21 or a plurality of retaining collar segments of the connecting body 18, so that the fuel injection valve 1 is freely suspended relative to a radially extending shoulder 22 of the receiving bore 9.
  • the retaining collar 21 or the plurality of retaining collar segments of the connecting body 18, which engage under the fuel injection valve 1, for example, are executed at right angles ending, while the housing shoulder 20 extends at the fuel injection valve 1, for example, conical.
  • connection body 18 At its end facing the connection piece 6, the connection body 18 has a first latching means 32, for example in the form of a bulge, while a second latching means 33, for example in the form of a bulge, is provided on the periphery of the connection piece 6, which together form a latching or clip-on projection. Connection correspond.
  • the bulge 33 on the connecting piece 6 is designed, for example, with a radius R whose center lies on the valve longitudinal axis in the center of the sealing ring 5.
  • the double arrow 34 is intended to indicate that the connecting body 18 according to the invention advantageously allows a tilting movement of the fuel injection valve 1 for the radial tolerance compensation between the cylinder head 17 and the fuel distributor line 4.
  • FIG. 5 shows a fifth embodiment of a erfindunmultien fuel injection device is shown.
  • This fuel injection device is characterized in minor modification of the embodiment according to FIG. 4 also by the fact that a connecting body 18 is formed, which engages on the one hand with a retaining collar 21, the fuel injection valve 1 in the region of a housing shoulder 20 and on the other hand via a non-material connection, here a locking connection with screw connection to the connecting piece 6 is connected.
  • the connecting body 18 is designed in a tubular shape with a gradation and has to reach through the connector 8 of the fuel injector 1 a recess 19. Outside this recess 19, the connecting body 18 may be performed by 360 ° encircling.
  • the fuel injection valve 1 is engaged by the retaining collar 21 or a plurality of retaining collar segments of the connecting body 18 so that the fuel injection valve 1 is freely suspended from a radially extending shoulder 22 of the receiving bore 9.
  • the retaining collar 21 or the plurality of retaining collar segments of the connecting body 18, which engage under the fuel injection valve 1, for example, are executed at right angles ending, while the housing shoulder 20 extends at the fuel injection valve 1, for example, conical.
  • the connecting piece 6 facing the end of the connecting body 18 has an annular collar 35 which has a conical support surface 36.
  • the annular collar 35 of the connecting body 18 is supported on a fastening ring 37 which, for example, has a curved surface facing the annular collar 35 and rests on a downstream collar 15 of the connecting piece 6.
  • a fastening ring 37 which, for example, has a curved surface facing the annular collar 35 and rests on a downstream collar 15 of the connecting piece 6.
  • FIG. 6 is a sixth embodiment of a erfindunmultien fuel injection device shown.
  • a pot-shaped sleeve is provided as a connecting body 18, which is 6 securely and firmly arranged at the downstream end of the connecting piece.
  • the connecting body 18 has a skirt portion 41 and a bottom portion 42, wherein the skirt portion 41 is fixed, for example by means of positive and / or non-positive, for example by pressing 43 on the circumference of the connecting piece 6.
  • the penetration depth of the fuel injection valve 1 in the connecting piece 6 via the axial position of the connecting body 18 is adjustable with non-positive connection.
  • a central opening 44 is provided, which is penetrated by a tapered portion 45 of the fuel injection valve 1.
  • a slot-like widening or enlargement is formed as a radius-larger hole.
  • the hold-down 10 is clamped between the bottom portion 42 of the connecting body 18 and the shoulder 12 on the fuel injection valve 1.
  • FIG. 7 shows a seventh embodiment of a erfindunmultien fuel injection device is shown.
  • the fuel injection valve 1 has a radially outwardly projecting flange 46.
  • the connecting body 18 is designed in the form of a lock nut 38.
  • the connecting body 18 has a section containing an internal thread, to which an annular collar 47 adjoins, which has a conical supporting surface 48. With this support surface 48, the annular collar is supported 47 of the connecting body 18, 38 on the flange 46, for example, has a the annular collar 47 facing curved surface.
  • the locking nut 38 corresponds to an external thread 39 on the circumference of the connection piece 6.
  • the penetration depth of the fuel injection valve 1 in the connecting piece 6 can be set with the securing nut 38 acting on the flange 46 of the fuel injection valve 1.
  • the hold-down 10 is clamped between the annular collar 47 of the lock nut 38 and the shoulder 12 on the fuel injection valve 1.
  • FIG. 8 an eighth embodiment of a erfindunmultien fuel injection device is shown.
  • This fuel injection device is characterized by its very simple structure.
  • the fuel injection valve 1 is attached directly to its inlet nozzle 7 in the connecting piece 6 of the fuel distributor line 4.
  • the fixed connection 49 is achieved for example by means of adhesion, positive connection and / or material connection. Weldable or soldered connections and the pressing in of the inlet connection 7 in the connecting piece 6 are conceivable, for example, to form a metallic interference fit.
  • the penetration depth of the fuel injection valve 1 in the connecting piece 6 is adjustable.
  • the tolerance compensation indicated by the double arrow 34 is possible here exclusively via a suitably foreseeable flexibility of the fuel injection valve 1.
  • FIG. 9 a ninth embodiment of a erfindunmultien fuel injection device is shown.
  • This fuel injection device is characterized in that a connecting body 18 is formed, which engages on the one hand with a retaining collar 21, the fuel injection valve 1 in the region of a housing shoulder 20 and on the other hand via a non-material connection, eg a latching connection with the connecting piece 6 is connected.
  • the connecting body 18 is tubular and has to reach through the connector 8 of the fuel injector 1 a recess 19. Outside of this recess 19, the connecting body 18 may be performed by 360 ° rotating.
  • the fuel injection valve 1 is engaged by the retaining collar 21 or a plurality of retaining collar segments of the connecting body 18 so that the fuel injection valve 1 is freely suspended from a radially extending shoulder 22 of the receiving bore 9.
  • the retaining collar 21 or the plurality of retaining collar segments of the connecting body 18, which engage under the fuel injection valve 1, For example, are executed at right angles ending, while the housing shoulder 20 extends on the fuel injector 1, for example, conical.
  • a support ring 50 is still inserted, which has the housing shoulder 20 facing a curved contact surface. In this way, the fuel injection valve 1 with respect to the connecting body 18 slide on the support ring 50 and compensate for tolerances.
  • the connecting body 18 At its end facing the connecting piece 6, the connecting body 18 has a latching means 52, for example in the form of one or more latching lugs, which engage over a collar 15 at the downstream end of the connecting piece 6 and thus together correspond to a latching connection.
  • the double arrow 34 is intended to indicate that the connecting body 18 according to the invention advantageously allows a tilting movement of the fuel injection valve 1 for the radial tolerance compensation between the cylinder head 17 and the fuel distributor line 4.
  • the hold-down 10 is similar to the first embodiment according to FIG. 1 clamped between the end surface 14 of the connecting piece 6 and the shoulder 12 on the fuel injection valve 1.
  • FIGS. 10 and 11 a tenth embodiment of a erfindunmultien fuel injection device is shown.
  • This fuel injection device is characterized in that a connecting body 18 is formed, which engages on the one hand with a retaining collar 21, the fuel injection valve 1 in the region of a housing shoulder 20 and on the other hand via a non-material connection, such as a snap connection with the connecting piece 6 is connected.
  • the connecting body 18 is tubular and has to reach through the connector 8 of the fuel injector 1 a recess 19. Outside of this recess 19, the connecting body 18 may be performed by 360 ° rotating.
  • the fuel injection valve 1 is engaged by the retaining collar 21 or a plurality of retaining collar segments of the connecting body 18 so that the fuel injection valve 1 is freely suspended from a radially extending shoulder 22 of the receiving bore 9.
  • the retaining collar 21 or the plurality of retaining collar segments of the connecting body 18, which engage under the fuel injection valve 1, are curved, for example, toward the housing shoulder 20, while the housing shoulder 20 on the fuel injection valve 1, for example, runs conically.
  • the connecting body 18, viewed over the circumference has two opposing slots 53 which, for example, have an extension of about 90 °.
  • the slots 53 are penetrated by a bow-shaped, U-shaped snap ring 54.
  • the snap ring 54 also engages in the peripheral region of the slots 53 in the connecting body 18 in two slot-shaped grooves 55 on the circumference of the connecting piece 6 for secure attachment of the connecting body 18 to the fuel rail 4 a.
  • the hold-down 10 is similar to the first embodiment according to FIG. 1 clamped between the end surface 14 of the connecting piece 6 and the shoulder 12 on the fuel injection valve 1.
  • FIG. 12 an eleventh embodiment of a erfindunmultien fuel injection device is shown.
  • the fuel injection valve 1 has a wire ring 56 inserted in a groove.
  • the connection body 18 is designed in the form of a lock nut 38.
  • the connecting body 18 has a section containing an internal thread, to which an annular collar 47 adjoins, which has a curved support surface 57 in the form of a ball socket. With this support surface 57, the annular collar 47 of the connecting body 18, 38 is supported on the wire ring 56, which is received with its curvature in the annular collar 47.
  • the support surface 57 on the annular collar 47 of the lock nut 38 is designed, for example, with a radius R whose center lies on the valve longitudinal axis in the center of the sealing ring 5.
  • the locking nut 38 corresponds to an external thread 39 on the circumference of the connection piece 6.
  • the penetration depth of the fuel injection valve 1 in the connection piece 6 can be adjusted with the locking nut 38 acting on the wire ring 56 of the fuel injection valve 1.
  • the hold-down 10 is clamped between the annular collar 47 of the lock nut 38 and the shoulder 12 on the fuel injection valve 1.
  • the double arrow 34 is intended to indicate that the connecting body 18 according to the invention advantageously allows a tilting movement of the fuel injection valve 1 for the radial tolerance compensation between the cylinder head 17 and the fuel distributor line 4.
  • FIG. 13 is a twelfth embodiment of a erfindunmultien fuel injection device shown.
  • This fuel injection device is characterized in that a connecting body 18 is formed, which engages on the one hand with a retaining collar 21, the fuel injection valve 1 in the region of a housing shoulder 20 and on the other hand via a non-positive and / or cohesive connection the connection piece 6 is connected.
  • the connecting body 18 is tubular and has to reach through the connector 8 of the fuel injector 1 a recess 19. Outside of this recess 19, the connecting body 18 may be performed by 360 ° rotating.
  • the fuel injection valve 1 is engaged by the retaining collar 21 or a plurality of retaining collar segments of the connecting body 18 so that the fuel injection valve 1 is freely suspended from a radially extending shoulder 22 of the receiving bore 9.
  • the retaining collar 21 or the plurality of retaining collar segments of the connecting body 18, which engage under the fuel injection valve 1, for example, are executed at right angles ending, while the housing shoulder 20 extends at the fuel injection valve 1, for example, conical.
  • a support ring 50 is still inserted, which has the housing shoulder 20 facing a curved contact surface. In this way, the fuel injection valve 1 with respect to the connecting body 18 slide on the support ring 50 and compensate for tolerances.
  • the connecting body 18 is fastened directly on the outer periphery of the connecting piece 6 of the fuel distributor line 4.
  • the fixed connection 49 is achieved for example by means of adhesion, positive connection and / or material connection. Weldable or soldered joints and the pressing on of the connecting body 18 on the connecting piece 6 are conceivable, for example, to form a metallic interference fit.
  • the penetration depth of the fuel injection valve 1 in the connecting piece 6 is adjustable.
  • the double arrow 34 is intended to indicate that the connecting body 18 according to the invention advantageously allows a tilting movement of the fuel injection valve 1 for the radial tolerance compensation between the cylinder head 17 and the fuel distributor line 4.
  • the hold-down 10 is similar to the first embodiment according to FIG. 1 clamped between the end surface 14 of the connecting piece 6 and the shoulder 12 on the fuel injection valve 1.
  • FIG. 14 a thirteenth embodiment of a erfindunmultien fuel injection device is shown.
  • This fuel injection device is characterized in that a connecting body 18 is formed, which engages on the one hand with a retaining collar 21, the fuel injection valve 1 in the region of a housing shoulder 20 and on the other hand is connected via a material connection with the connecting piece 6.
  • the connecting body 18 is tubular and has for reaching through the connector 8 of the fuel injection valve 1, a recess 19. Outside this recess 19, the connector body 18 may be performed by 360 ° encircling.
  • the fuel injection valve 1 is engaged by the retaining collar 21 or a plurality of retaining collar segments of the connecting body 18 so that the fuel injection valve 1 is freely suspended from a radially extending shoulder 22 of the receiving bore 9.
  • the retaining collar 21 or the plurality of retaining collar segments of the connecting body 18, which engage under the fuel injection valve 1, for example, are executed at right angles ending, while the housing shoulder 20 extends at the fuel injection valve 1, for example, conical.
  • a support ring 50 is still inserted, which has the housing shoulder 20 facing a curved contact surface. In this way, the fuel injection valve 1 with respect to the connecting body 18 slide on the support ring 50 and compensate for tolerances.
  • connection piece 6 At its end facing the connecting piece 6, the connecting body 18 is fastened directly to the downstream end face 14 of a radially outwardly projecting collar 15 of the connection piece 6 of the fuel distributor line 4.
  • the fixed connection 49 is achieved for example by means of resistance welding.
  • the hold-down 10 is similar to the first embodiment according to FIG. 1 clamped between the end surface 14 of the connecting piece 6 and the shoulder 12 on the fuel injection valve 1.
  • FIG. 15 a fourteenth embodiment of a erfindunmultien fuel injection device is shown.
  • This fuel injection device is characterized in that a connecting body 18 is formed, which engages on the one hand with a retaining collar 21, the fuel injection valve 1 in the region of a housing shoulder 20 and on the other hand is connected via a screw connection with the connecting piece 6.
  • the connecting body 18 is tubular and has to reach through the connector 8 of the fuel injector 1 a recess 19. Outside of this recess 19, the connecting body 18 may be performed by 360 ° rotating.
  • the fuel injection valve 1 is engaged by the retaining collar 21 or a plurality of retaining collar segments of the connecting body 18 so that the fuel injection valve 1 is freely suspended from a radially extending shoulder 22 of the receiving bore 9.
  • a support ring 50 is still inserted, which has the housing shoulder 20 facing a curved contact surface.
  • the fuel injection valve 1 with respect to the connecting body 18 slide on the support ring 50 and compensate for tolerances.
  • the connecting body 18 is engaged by a locking nut 38.
  • the securing nut 38 has a section containing an internal thread, to which an annular collar 47 adjoins.
  • the locking nut 38 engages with an external thread 39 on the circumference of the connecting piece 6. With the engaging on the collar 58 of the connecting body 18 locking nut 38, the penetration depth of the fuel injection valve 1 in the connecting piece 6 are set.
  • the double arrow 34 is intended to indicate that the connecting body 18 according to the invention advantageously allows a tilting movement of the fuel injection valve 1 for the radial tolerance compensation between the cylinder head 17 and the fuel distributor line 4.
  • the hold-down 10 is similar to the first embodiment according to FIG. 1 clamped between the end surface 14 of the connecting piece 6 and the shoulder 12 on the fuel injection valve 1.
  • FIG. 16 a fifteenth embodiment of a erfindunmultien fuel injection device is shown.
  • This fuel injection device is characterized in that the connecting body 18 is only a slotted snap ring 59.
  • the snap ring 59 engages in a tapered portion of the inlet nozzle 7 of the fuel injection valve 1 a.
  • a groove 60 is provided, in which the snap ring 59 is locked securely and firmly.
  • the snap ring 59 has a conical or curved spherical bearing surface 62.
  • the hold-down 10 is similar to the first embodiment according to FIG. 1 clamped between the end surface 14 of the connecting piece 6 and the shoulder 12 on the fuel injection valve 1.
  • FIG. 17 a sixteenth embodiment of a erfindunmultien fuel injection device is shown.
  • a connecting body 18 a cup-shaped sleeve which is arranged securely and firmly at the downstream end of the connecting piece 6.
  • the connecting body 18 is designed in two parts, ie it consists of two semi-annular elements 63.
  • Each of the ring members 63 has a skirt portion 41 and a bottom portion 42, wherein the skirt portion 41 opposite the bottom portion 42 each in a hook-shaped latching portion 64 passes.
  • the locking portions 64 of the connecting body 18 engage securely in two grooves 65 on the circumference of the connecting piece 6.
  • a central opening 44 is provided, which is penetrated by a tapered portion 45 of the fuel injection valve 1, wherein the tapered portion 45 on the inlet nozzle 7 has a conical flank 66 as abutment surface.
  • the central opening 44 in the bottom section 42 has a curved spherical boundary edge, which corresponds to the contact surface 66 of the tapered region 45 and can slide slightly therealong.
  • a closed clamping ring 67 is pushed over the two ring elements 63.
  • the hold-down 10 is clamped between the bottom portion 42 of the connecting body 18 and the shoulder 12 on the fuel injection valve 1.
  • FIG. 18 a seventeenth embodiment of a erfindunmultien fuel injection device is shown.
  • This fuel injection device is characterized in that a connecting body 18 is formed, which engages on the one hand with a retaining collar 21, the fuel injection valve 1 in the region of a housing shoulder 20 and on the other hand via a non-material connection, here a snap or latching connection with the connecting piece 6 is.
  • the connecting body 18 is tubular with counter to the flow direction widening opening and has to reach through the connector 8 of the fuel injector 1 has a recess 19. Outside of this recess 19, the connecting body 18 may be performed by 360 ° encircling.
  • the fuel injection valve 1 is engaged by the retaining collar 21 or a plurality of retaining collar segments of the connecting body 18 so that the fuel injection valve 1 is freely suspended from a radially extending shoulder 22 of the receiving bore 9.
  • the retaining collar 21 or the plurality of retaining collar segments of the connecting body 18, which engage under the fuel injection valve 1, for example, are executed at right angles ending, while the housing shoulder 20 on the fuel injection valve 1, for example, runs conically.
  • the connecting body 18 has an annular overlapping section 69 which has two conical boundary surfaces 70a, 70b.
  • a groove 55 is provided on the circumference of the connecting piece 6, in which an open spring ring 71 is introduced.
  • the first limiting surface 70a first pushes the spring ring 71 into the groove 55 until the overlapping section 69 has slid over the spring ring 71.
  • the second boundary surface 70b of the overreaching section 69 of the connecting body 18 is supported on the spring ring 71, which due to its spring tension slightly slips radially outwards out of the groove 55 and clamps the connecting body 18 to the connecting piece 6.
  • the hold-down 10 is similar to the first embodiment according to FIG. 1 clamped between the end surface 14 of the connecting piece 6 and the shoulder 12 on the fuel injection valve 1.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Feeding And Controlling Fuel (AREA)

Abstract

The device has a fuel injecting valve (1) fastened directly to a fuel distribution line (4) by a connection body (18). The valve is retained in the body such that the valve and body are placed without abutment on all surfaces of a mounting hole in a cylinder head, where the surfaces extend in non parallel direction to the valve. Damper plates (26) are provided in connection region of the distribution line and cylinder head.

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einer Brennstoffeinspritzvorrichtung nach der Gattung des Anspruchs 1.The invention relates to a fuel injection device according to the preamble of claim 1.

Bekannt ist bereits aus der DE 101 08 193 A1 eine Befestigungsvorrichtung zur wechselseitigen Befestigung eines Brennstoffeinspritzventils in einem Zylinderkopf einer Brennkraftmaschine und des Brennstoffeinspritzventils an einer Brennstoffverteilerleitung. Die Befestigungsvorrichtung umfasst eine Hülse, die zwischen einer Schulter der Brennstoffverteilerleitung und einer Schulter des Brennstoffeinspritzventils eingespannt ist und aus einem elastischen Material ausgebildet ist. Die Hülse kann aufgrund ihrer rohrförmigen Struktur die Niederhaltekräfte nur bedingt wirksam auf das Brennstoffeinspritzventil übertragen. Die durch die Schultern von Brennstoffeinspritzventil und Brennstoffverteilerleitung beanspruchten Flächen der als Niederhalter dienenden Hülse stellen die bei der Herstellung des Rohlings der Hülse fertigungsbedingt entstehenden Schnittkanten dar. Das Brennstoffeinspritzventil ist in eine Aufnahmebohrung des Zylinderkopfes eingebracht und stützt sich gegen einen Stützring ab, der an einer radial verlaufenden Schulter der Aufnahmebohrung aufliegt. Der Stützring ist zum Brennstoffeinspritzventil hin abgerundet ausgebildet und dient als Lagerstelle des Brennstoffeinspritzventils in der Aufnahmebohrung des Zylinderkopfes. Der Stützring kann aus einem elastischen Material bestehen und sorgt für eine Zentrierung und eine geringfügige Ausgleichsbewegung des Brennstoffeinspritzventils in der Aufnahmebohrung. Die Kippbewegung ermöglicht einen radialen Toleranzausgleich zwischen Brennstoffeinspritzventil und Brennstoffverteilerleitung. Über eine zusätzliche Verspannung der Brennstoffverteilerleitung am Zylinderkopf mittels Schrauben wird die Hülse eingespannt. Dabei entsteht eine Federkraft, die auf das Brennstoffeinspritzventil wirkt und dieses gegen den Verbrennungsdruck niederhält. Dieser Aufbau hat zur Folge, dass sowohl durch die Niederhaltekraft als auch durch den in der Brennstoffverteilerleitung innen anliegenden Hochdruck des Brennstoffs das Brennstoffeinspritzventil derart über den Stützring in den Zylinderkopf gedrückt wird, dass eine unerwünscht hohe Körperschallübertragung vom Brennstoffeinspritzventil in den Zylinderkopf erfolgt, die in negativer Weise deutlich hörbar sein kann.It is already known from the DE 101 08 193 A1 a fixing device for mutually fixing a fuel injection valve in a cylinder head of an internal combustion engine and the fuel injection valve to a fuel distribution line. The fastening device comprises a sleeve which is clamped between a shoulder of the fuel rail and a shoulder of the fuel injection valve and is formed of an elastic material. Due to its tubular structure, the sleeve can transfer the hold-down forces to the fuel injector only to a limited extent effectively. The claimed by the shoulders of the fuel injection valve and fuel distributor surfaces of serving as holddown sleeve represent the manufacturing in the production of the blank of the sleeve resulting from manufacturing cutting edges. The fuel injector is inserted into a receiving bore of the cylinder head and is supported against a support ring, which at a radial extending shoulder of the receiving bore rests. The support ring is rounded towards the fuel injection valve and serves as a bearing point of the fuel injection valve in the receiving bore of the cylinder head. The support ring may be made of an elastic material and provides for centering and a slight compensation movement of the fuel injection valve in the receiving bore. The tilting movement allows radial tolerance compensation between fuel injector and fuel rail. About an additional clamping of the fuel rail on the cylinder head by means of screws, the sleeve is clamped. This creates a spring force which acts on the fuel injection valve and holds this down against the combustion pressure. This design has the consequence that both by the hold-down force and by the fuel in the fuel distributor line inside high pressure of the fuel injection valve is pressed over the support ring in the cylinder head so that an undesirably high structure-borne sound transmission from the fuel injection valve into the cylinder head takes place in the negative Way clearly audible.

Aus der JP 2000-009000 A ist bereits eine Brennstoffeinspritzvorrichtung für Brennstoffeinspritzanlagen mit wenigstens einem Brennstoffeinspritzventil bekannt. Die Brennstoffeinspritzvorrichtung besitzt eine Aufnahmebohrung für das Brennstoffeinspritzventil, die in einem Zylinderkopf angeordnet ist. Außerdem hat die Brennstoffeinspritzvorrichtung eine Brennstoffverteilerleitung mit wenigstens einem Anschlussstutzen, in den das Brennstoffeinspritzventil teilweise überlappend eingebracht ist. Zudem ist ein Verbindungskörper in der Form einer becherförmigen Schraubnuss derart angeordnet, dass das Brennstoffeinspritzventil so in ihm gehalten ist, dass das Brennstoffeinspritzventil und der Verbindungskörper anlagefrei zu allen nicht achsparallel zum Brennstoffeinspritzventil verlaufenden Flächen bzw. Wandungen der Aufnahmebohrung des Zylinderkopfes eingebracht sind. Die Brennstoffverteilerleitung ist mittels Verbindungsmitteln B an dem Zylinderkopf befestigt, wobei zwischen dem bolzenartigen Verbindungsmittel B und dem Zylinderkopf eine Dämpfungsscheibe vorgesehen ist.From the JP 2000-009000 A is already known a fuel injection device for fuel injection systems with at least one fuel injection valve. The fuel injector has a receiving bore for the fuel injector disposed in a cylinder head. In addition, the fuel injector has a fuel rail with at least one connection piece, in which the fuel injection valve is partially overlapped. In addition, a connecting body in the form of a cup-shaped Schraubnuss is arranged such that the fuel injection valve is held in it, that the fuel injection valve and the connecting body are introduced investment free to all not axially parallel to the fuel injection valve extending surfaces or walls of the receiving bore of the cylinder head. The fuel distributor line is fastened to the cylinder head by means of connecting means B, a damping disk being provided between the bolt-like connecting means B and the cylinder head.

Vorteile der ErfindungAdvantages of the invention

Die erfindungsgemäße Brennstoffeinspritzvorrichtung mit den kennzeichnenden Merkmalen des Anspruchs 1 hat den Vorteil, dass die Körperschallübertragung vom Brennstoffeinspritzventil in den Zylinderkopf deutlich reduziert ist. Dies wird erfindungsgemäß dadurch erreicht, dass das Brennstoffeinspritzventil direkt an die Brennstoffverteilerleitung über einen Verbindungskörper angebunden ist, aber weitgehend von der Aufnahmebohrung des Zylinderkopfes abgekoppelt ist. Das Brennstoffeinspritzventil ist in der Aufnahmebohrung des Zylinderkopfes derart angeordnet, dass es anlagefrei zu allen nicht achsparallel zum Brennstoffeinspritzventil verlaufenden Flächen bzw. Wandungen der Aufnahmebohrung eingebracht ist.The fuel injection device according to the invention with the characterizing features of claim 1 has the advantage that the structure-borne sound transmission from the fuel injection valve is significantly reduced in the cylinder head. This is inventively achieved in that the fuel injection valve is connected directly to the fuel rail via a connecting body, but is largely decoupled from the receiving bore of the cylinder head. The fuel injection valve is arranged in the receiving bore of the cylinder head such that it is introduced system-free to all not axially parallel to the fuel injection valve extending surfaces or walls of the receiving bore.

Der erfindungsgemäße Verbindungskörper ermöglicht in vorteilhafter Weise eine Kippbewegung des Brennstoffeinspritzventils zum radialen Toleranzausgleich zwischen Zylinderkopf und Brennstoffverteilerleitung.The connecting body according to the invention advantageously allows a tilting movement of the fuel injection valve for radial tolerance compensation between the cylinder head and the fuel distributor line.

Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen und Verbesserungen der im Anspruch 1 angegebenen Brennstoffeinspritzvorrichtung möglich.The measures listed in the dependent claims advantageous refinements and improvements of the claim 1 fuel injection device are possible.

Besonders vorteilhaft ist es, den Verbindungskörper rohrförmig, hülsenförmig oder topfförmig auszuführen und diesen mittels einer nichtstoffschlüssigen Verbindung, insbesondere einer Press-, Schraub-, Clip-, Rast- oder Schnapp-Verbindung fest mit dem Anschlussstutzen der Brennstoffverteilerleitung zu verbinden. Dabei kann diese Verbindung noch mit einer Sicherungsmutter oder einem Sicherungsring gesichert sein. Derartige Verbindungen ermöglichen es insbesondere, in vorteilhafter Weise eine Kippbewegung des Brennstoffeinspritzventils zum radialen Toleranzausgleich zwischen Zylinderkopf und Brennstoffverteilerleitung zuzulassen.It is particularly advantageous to make the connecting body tubular, sleeve-shaped or cup-shaped and to connect it firmly to the connecting piece of the fuel distributor line by means of a non-material connection, in particular a press, screw, clip, latching or snap connection. In this case, this connection can still be secured with a lock nut or a locking ring. Such compounds make it possible, in particular, advantageously Allow tilting movement of the fuel injection valve for radial tolerance compensation between the cylinder head and fuel rail.

Neben den genannten nichtstoffschlüssigen Verbindungen ist es auch denkbar, den Verbindungskörper oder mit dem Verbindungskörper zusammenwirkende Zwischenbauteile am Anschlussstutzen stoffschlüssig, z.B. mittels Laserschweißen, Widerstandsschweißen oder Löten zu befestigen. Außerdem können auch Kombinationen von Form-, Kraft- und Stoffschluss für die gewünschten Verbindungen am Anschlussstutzen zum Einsatz kommen.In addition to the non-material connections mentioned, it is also conceivable to connect the connecting body or intermediate components cooperating with the connecting body to the connecting piece in a material-locking manner, e.g. using laser welding, resistance welding or soldering. In addition, combinations of form, force and material connection for the desired connections can be used on the connection piece.

Besonders vorteilhaft ist es, zusätzlich zur Entkopplung des Brennstoffeinspritzventils vom Zylinderkopf Dämpfungsscheiben im Verbindungsbereich von Brennstoffverteilerleitung und Zylinderkopf vorzusehen. Diese Dämpfungsscheiben können einfach oder doppelt im Bereich jeder Verschraubung der Brennstoffverteilerleitung am Zylinderkopf eingesetzt werden, so dass das Hochdruckeinspritzsystem zum Zylinderkopf hin noch wirksamer entkoppelt und schallisolierter ist.In addition to decoupling the fuel injection valve from the cylinder head, it is also advantageous to provide damping disks in the connection region of the fuel distributor line and cylinder head. These damping disks can be used simply or twice in the region of each screw connection of the fuel distributor line to the cylinder head, so that the high-pressure injection system is even more effectively decoupled from the cylinder head and sound-insulated.

Von Vorteil ist es, den Niederhalter als Stanz-Biege-Teil auszuführen und derart zu formen und in der Brennstoffeinspritzvorrichtung zu verbauen, dass die durch Biegespannung beanspruchten Flächen der Schrägabschnitte und Anlageabschnitte des Niederhalters senkrecht zu den Schnittkanten verlaufen, die beim Herauslösen des Rohlings für den Niederhalter aus dem entsprechenden Blech entstehen. Auf diese Weise lässt sich die dauerhafte Belastbarkeit der auf Biegung beanspruchten Abschnitte des Niederhaltebügels des Niederhalters erhöhen und eine optimale Niederhaltekraft auf das Brennstoffeinspritzventil zur sicheren Fixierung in der Aufnahmebohrung erzielen.It is advantageous to carry out the hold-down as punching-bending part and shape and obstruct the fuel injector that the stress of bending stress surfaces of the inclined sections and abutment portions of the blank perpendicular to the cutting edges, which are in the dissolution of the blank for the Hold-downs from the corresponding sheet arise. In this way, the permanent load capacity of the stressed portions of the hold-down bracket of the hold-down can be increased and achieve an optimum hold-down force on the fuel injection valve for secure fixation in the receiving bore.

Zeichnungdrawing

Ausführungsbeispiele der Erfindung sind in der Zeichnung vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen

Figur 1
eine teilweise dargestellte Brennstoffeinspritzvorrichtung mit einem an einer Brennstoffverteilerleitung angebundenen und von einem Zylinderkopf kör- perschallmäßig abgekoppelten Brennstoffeinspritzventil in einer ersten Ausführung,
Figur 2
ein zweites Ausführungsbeispiel einer Brennstoffeinspritzvorrichtung,
Figur 3
ein drittes Ausführungsbeispiel einer Brennstoffeinspritzvorrichtung,
Figur 4
ein viertes Ausführungsbeispiel einer Brennstoffeinspritzvorrichtung,
Figur 5
ein fünftes Ausführungsbeispiel einer Brennstoffeinspritzvorrichtung,
Figur 6
ein sechstes Ausführungsbeispiel einer Brennstoffeinspritzvorrichtung,
Figur 7
ein siebtes Ausführungsbeispiel einer Brennstoffeinspritzvorrichtung,
Figur 8
ein achtes Ausführungsbeispiel einer Brennstoffeinspritzvorrichtung,
Figur 9
ein neuntes Ausführungsbeispiel einer Brennstoffeinspritzvorrichtung,
Figur 10
ein zehntes Ausführungsbeispiel einer Brennstoffeinspritzvorrichtung,
Figur 11
einen Schnitt durch die Brennstoffeinspritzvorrichtung entlang der Linie XI-XI in Figur 10,
Figur 12
ein elftes Ausführungsbeispiel einer Brennstoffeinspritzvorrichtung,
Figur 13
ein zwölftes Ausführungsbeispiel einer Brennstoffeinspritzvorrichtung,
Figur 14
ein dreizehntes Ausführungsbeispiel einer Brennstoffeinspritzvorrichtung,
Figur 15
ein vierzehntes Ausführungsbeispiel einer Brennstoffeinspritzvorrichtung,
Figur 16
ein fünfzehntes Ausführungsbeispiel einer Brennstoffeinspritzvorrichtung,
Figur 17
ein sechzehntes Ausführungsbeispiel einer Brennstoffeinspritzvorrichtung und
Figur 18
ein siebzehntes Ausführungsbeispiel einer Brennstoffeinspritzvorrichtung.
Embodiments of the invention are shown in simplified form in the drawing and explained in more detail in the following description. Show it
FIG. 1
a partially illustrated fuel injector with a connected to a fuel rail and from a cylinder head body Perschallmäßig decoupled fuel injection valve in a first embodiment,
FIG. 2
A second embodiment of a fuel injection device,
FIG. 3
A third embodiment of a fuel injection device,
FIG. 4
A fourth embodiment of a fuel injection device,
FIG. 5
A fifth embodiment of a fuel injection device,
FIG. 6
A sixth embodiment of a fuel injection device,
FIG. 7
A seventh embodiment of a fuel injection device,
FIG. 8
an eighth embodiment of a fuel injection device,
FIG. 9
A ninth embodiment of a fuel injection device,
FIG. 10
A tenth embodiment of a fuel injection device,
FIG. 11
a section through the fuel injection device along the line XI-XI in FIG. 10 .
FIG. 12
an eleventh embodiment of a fuel injection device,
FIG. 13
A twelfth embodiment of a fuel injection device,
FIG. 14
A thirteenth embodiment of a fuel injection device,
FIG. 15
a fourteenth embodiment of a fuel injection device,
FIG. 16
A fifteenth embodiment of a fuel injection device,
FIG. 17
a sixteenth embodiment of a fuel injection device and
FIG. 18
a seventeenth embodiment of a fuel injection device.

Beschreibung der AusführungsbeispieleDescription of the embodiments

Einleitend soll betont werden, dass von der Erfindung nur die Ausführungsbeispiele gemäß Figuren 1, 5, 9 und 18 umfasst sind.By way of introduction, it should be emphasized that of the invention only the embodiments according to FIGS. 1 . 5 . 9 and 18 are included.

In der Figur 1 ist als ein erstes Ausführungsbeispiel ein Ventil in der Form eines Einspritzventils 1 für Brennstoffeinspritzanlagen von gemischverdichtenden fremdgezündeten Brennkraftmaschinen in einer Seitenansicht dargestellt. Das Brennstoffeinspritzventil 1 ist Teil einer erfindungsgemäßen Brennstoffeinspritzvorrichtung. Mit einem stromabwärtigen Ende ist das Brennstoffeinspritzventil 1, das in Form eines direkt einspritzenden Einspritzventils zum direkten Einspritzen von Brennstoff in einen Brennraum der Brennkraftmaschine ausgeführt ist, in eine Aufnahmebohrung 9 eines nur schematisch angedeuteten Zylinderkopfes 17 eingebaut. Ein Dichtring 2, insbesondere aus Teflon ®, sorgt für eine optimale Abdichtung des Brennstoffeinspritzventils 1 gegenüber der Wandung der Aufnahmebohrung 9 des Zylinderkopfes 17.In the FIG. 1 is shown as a first embodiment, a valve in the form of an injection valve 1 for fuel injection systems of mixture-compression spark-ignited internal combustion engines in a side view. The fuel injection valve 1 is part of a fuel injection device according to the invention. With a downstream end of the fuel injection valve 1, which is designed in the form of a direct-injection injector for injecting fuel directly into a combustion chamber of the internal combustion engine, installed in a receiving bore 9 of a cylinder head 17 indicated only schematically. A sealing ring 2, in particular of Teflon®, ensures optimum sealing of the fuel injection valve 1 with respect to the wall of the receiving bore 9 of the cylinder head 17.

Das Brennstoffeinspritzventil 1 weist an seinem zulaufseitigen Ende 3 eine Steckverbindung zu einer Brennstoffverteilerleitung 4 auf, die durch einen Dichtring 5 zwischen einem Anschlussstutzen 6 der Brennstoffverteilerleitung 4, der im Schnitt dargestellt ist, und einem Zulaufstutzen 7 des Brennstoffeinspritzventils 1 abgedichtet ist. Das Brennstoffeinspritzventil 1 verfügt über einen elektrischen Anschlussstecker 8 für die elektrische Kontaktierung zur Betätigung des Brennstoffeinspritzventils 1.The fuel injection valve 1 has at its inlet-side end 3 a plug connection to a fuel distributor line 4, which is sealed by a sealing ring 5 between a connection piece 6 of the fuel distributor line 4, which is shown in section, and an inlet connection 7 of the fuel injection valve 1. The fuel injection valve 1 has an electrical connection plug 8 for the electrical contacting for actuating the fuel injection valve 1.

Um das Brennstoffeinspritzventil 1 und die Brennstoffverteilerleitung 4 radialkraftfrei voneinander zu beabstanden und das Brennstoffeinspritzventil 1 sicher in der Aufnahmebohrung 9 des Zylinderkopfes 17 niederzuhalten, ist ein Niederhalter 10 zwischen dem Brennstoffeinspritzventil 1 und dem Anschlussstutzen 6 vorgesehen. Der Niederhalter 10 ist als bügelförmiges Bauteil ausgeführt, z.B. als Stanz-Biege-Teil. Der Niederhalter 10 weist ein teilringförmiges Grundelement 11 auf, wobei sich dieses Grundelement 11, das nicht um 360° umläuft, sondern z.B. nur eine Erstreckung von ca. 250° bis 320° besitzt, an einer Schulter 12 des Brennstoffeinspritzventils 1 abstützt. Mit einem von dem ebenen Grundelement 11 aus abgebogenen, axial nachgiebigen Niederhaltebügel 13 liegt der Niederhalter 10 an einer stromabwärtigen Endfläche 14 des Anschlussstutzens 6 an der Brennstoffverteilerleitung 4 im eingebauten Zustand an. Der Anschlussstutzen 6 der Brennstoffverteilerleitung 4 weist an seinem stromabwärtigen Ende einen teilweise ringförmig umlaufenden, überstehenden Kragen 15 auf, an dem die Endfläche 14 zur Anlage des Niederhalters 10 mit seinem Niederhaltebügel 13 ausgebildet ist. Im Bereich des elektrischen Anschlusssteckers 8 ist der Niederhalter 10 unterbrochen, wobei der Niederhalter 10 an sich ein geschlossenes Bügelelement bildet, da der Niederhaltebügel 13 endlos mit dem Grundelement 11 verbunden ist. Auf diese Weise kann der Niederhalter 10 das Brennstoffeinspritzventil 1 umschließen und ermöglicht trotzdem das Durchragen des elektrischen Anschlusssteckers 8. Der Niederhaltebügel 13 ragt mit seinen federnden Bügeln vom Anschlussstecker 8 weg.In order to space the fuel injection valve 1 and the fuel distributor line 4 radially from one another and to hold down the fuel injection valve 1 securely in the receiving bore 9 of the cylinder head 17, a holding-down device 10 is provided between the fuel injection valve 1 and the connecting piece 6. The hold-down 10 is designed as a bow-shaped component, e.g. as punching-bending part. The hold-down 10 has a part-ring-shaped base element 11, wherein this base element 11, which does not rotate through 360 °, but e.g. only an extension of about 250 ° to 320 °, is supported on a shoulder 12 of the fuel injection valve 1. With a bent from the flat base member 11, axially resilient hold-down bracket 13 of the hold-down 10 abuts a downstream end surface 14 of the connecting piece 6 to the fuel rail 4 in the installed state. The connecting piece 6 of the fuel distributor line 4 has at its downstream end a partially annular circumferential, protruding collar 15, on which the end face 14 is formed to bear the blank holder 10 with its hold-down bracket 13. In the area of the electrical connection plug 8, the hold-down device 10 is interrupted, the hold-down device 10 itself forms a closed bracket element, since the hold-down bar 13 is connected endlessly to the base element 11. In this way, the hold-down 10 can surround the fuel injector 1 and still allows the passage of the electrical connector plug 8. The hold-down bar 13 protrudes with its resilient brackets from the connector 8 away.

Der Niederhalter 10 wird z.B. mittels Stanzen, Erodieren oder Laserschneiden aus Blechen aus Federstahl bzw. Edelstahl (mit einer Dicke von ca. 1,5 mm) herausgelöst und nachfolgend mittels Biegen in die gewünschte Form gebracht. Der Niederhalter 10 hat den Vorteil, dass die durch Biegespannung beanspruchten Flächen des Niederhalters 10, insbesondere Schrägabschnitte und Anlageabschnitte senkrecht zu Schnittkanten verlaufen, die bei dem Herauslösen des Rohlings für den Niederhalter 10 aus dem entsprechenden Blech definiert werden.The hold-down 10 is removed, for example, by punching, eroding or laser cutting from sheets of spring steel or stainless steel (with a thickness of about 1.5 mm) and subsequently brought into the desired shape by means of bending. The hold-down device 10 has the advantage that the surfaces of the hold-down 10 that are subjected to bending stress, in particular oblique sections and contact sections, are perpendicular to the cutting edges run, which are defined in the extraction of the blank for the blank holder 10 from the corresponding sheet.

Bei bekannten Brennstoffeinspritzvorrichtungen sind Brennstoffeinspritzventile derart in Aufnahmebohrungen eines Zylinderkopfes eingebaut, dass diese unmittelbar oder indirekt über Stützringe an radial verlaufenden Schultern der Aufnahmebohrungen anliegen. Ein solcher Aufbau hat zur Folge, dass sowohl durch die Niederhaltekraft von federnden Niederhaltern und Verschraubungen oder Verspannungen der Brennstoffverteilerleitung am Zylinderkopf als auch durch den in der Brennstoffverteilerleitung innen anliegenden Hochdruck des Brennstoffs das Brennstoffeinspritzventil derart in den Zylinderkopf gedrückt wird, dass eine unerwünscht hohe Körperschallübertragung vom Brennstoffeinspritzventil in den Zylinderkopf erfolgt, die in negativer Weise deutlich hörbar sein kann.In known fuel injection devices, fuel injection valves are installed in receiving bores of a cylinder head such that they rest directly or indirectly via support rings on radially extending shoulders of the receiving bores. Such a structure has the consequence that the fuel injection valve is pressed in such a way in the cylinder head both by the hold-down force of resilient downers and fittings or tension of the fuel rail on the cylinder head as well as by the fuel in the fuel supply line adjacent high pressure of the fuel, that an undesirably high structure-borne noise transmission from Fuel injection valve takes place in the cylinder head, which can be clearly audible in a negative way.

Durch die erfindungsgemäßen Maßnahmen ist die Körperschallübertragung vom Brennstoffeinspritzventil 1 in den Zylinderkopf 17 deutlich reduziert. Dies wird dadurch erreicht, dass das Brennstoffeinspritzventil 1 direkt an die Brennstoffverteilerleitung 4 über einen Verbindungskörper 18 angebunden ist, aber weitgehend von der Aufnahmebohrung 9 des Zylinderkopfes 17 abgekoppelt ist. Das Brennstoffeinspritzventil 1 ist in der Aufnahmebohrung 9 des Zylinderkopfes 17 derart angeordnet, dass es anlagefrei zu allen nicht achsparallel zum Brennstoffeinspritzventil 1 verlaufenden Flächen bzw. Wandungen der Aufnahmebohrung 9 eingebracht ist. Das Brennstoffeinspritzventil 1 ist dazu in den Verbindungskörper 18 eingehängt. Der Verbindungskörper 18 ist rohrförmig ausgeführt und besitzt zum Durchgreifen des Anschlusssteckers 8 des Brennstoffeinspritzventils 1 eine Ausnehmung 19. An einer Gehäuseschulter 20 wird das Brennstoffeinspritzventil 1 von einem Haltekragen 21 oder mehreren Haltekragensegmenten des Verbindungskörpers 18 untergriffen, so dass das Brennstoffeinspritzventil 1 gegenüber einer radial verlaufenden Schulter 22 der Aufnahmebohrung 9 beabstandet frei hängt. Der Haltekragen 21 oder die mehreren Haltekragensegmenten des Verbindungskörpers 18, die das Brennstoffeinspritzventil 1 untergreifen, sind zur Gehäuseschulter 20 hin z.B. abgerundet ausgeführt, während die Gehäuseschulter 20 am Brennstoffeinspritzventil 1 beispielsweise konisch verläuft.The inventive measures the structure-borne sound transmission from the fuel injector 1 in the cylinder head 17 is significantly reduced. This is achieved in that the fuel injection valve 1 is connected directly to the fuel distributor line 4 via a connecting body 18, but is largely decoupled from the receiving bore 9 of the cylinder head 17. The fuel injection valve 1 is arranged in the receiving bore 9 of the cylinder head 17 such that it is introduced system-free to all not axially parallel to the fuel injector 1 extending surfaces or walls of the receiving bore 9. The fuel injection valve 1 is suspended in the connecting body 18. At a housing shoulder 20, the fuel injector 1 is engaged by a retaining collar 21 or more retaining collar segments of the connecting body 18, so that the fuel injection valve 1 with respect to a radially extending shoulder 22 of the receiving bore 9 spaced freely suspended. The retaining collar 21 or the plurality of retaining collar segments of the connecting body 18, which engage under the fuel injection valve 1, for example, rounded rounded to the housing shoulder 20, while the housing shoulder 20 on the fuel injector 1, for example, is tapered.

Bis auf den ringförmigen Materialkontakt des Dichtrings 2 in achsparalleler Erstreckung des Brennstoffeinspritzventils 1 zur Aufnahmebohrung 9 liegt kein weiterer direkter Körperkontakt von Brennstoffeinspritzventil 1 bzw. indirekter Körperkontakt des Brennstoffeinspritzventils 1 über den Verbindungskörper 18 mit dem Zylinderkopf 17 vor. Der Dichtring 2 sorgt dabei selbst für eine gute Dämpfung der Körperschallübertragung. Auf der der Ausnehmung 19 gegenüberliegenden Seite weist der Verbindungskörper 18 eine weitere z.B. schlitzartige Öffnung 23 auf, in die der Kragen 15 des Anschlussstutzens 6 ebenso wie in die Ausnehmung 19 zur sicheren Befestigung des Brennstoffeinspritzventils 1 bzw. des Verbindungskörpers 18 an der Brennstoffverteilerleitung 4 eingreift.Apart from the annular material contact of the sealing ring 2 in axially parallel extension of the fuel injection valve 1 to the receiving bore 9, there is no further direct body contact of the fuel injection valve 1 or indirect body contact of the fuel injection valve 1 via the connecting body 18 with the cylinder head 17. The sealing ring 2 ensures even for a good damping of the structure-borne sound transmission. On the side opposite the recess 19, the connecting body 18 has another, e.g. slit-like opening 23 into which engages the collar 15 of the connecting piece 6 as well as in the recess 19 for secure attachment of the fuel injection valve 1 and the connecting body 18 to the fuel distribution line 4.

Die Brennstoffverteilerleitung 4 ist mittels Verbindungsmitteln 25, im dargestellten Ausführungsbeispiel mittels Schrauben, an dem Zylinderkopf 17 befestigt. Besonders vorteilhaft ist es, zusätzlich zur Entkopplung des Brennstoffeinspritzventils 1 vom Zylinderkopf 17 Dämpfungsscheiben 26 in diesem Verbindungsbereich von Brennstoffverteilerleitung 4 und Zylinderkopf 17 vorzusehen. Diese Dämpfungsscheiben 26 können im Bereich unterhalb des Schraubenkopfes mit einer Auflage unmittelbar an der Brennstoffverteilerleitung 4 und/oder mit einer Auflage unmittelbar am Zylinderkopf 17 angeordnet sein, so dass das Hochdruckeinspritzsystem bestehend aus Brennstoffverteilerleitung 4 und mehreren Brennstoffeinspritzventilen 1 zum Zylinderkopf 17 hin noch wirksamer entkoppelt und besser schallisoliert ist. Gegenüber bekannten Lösungen kann die ausgeübte Kraft über die Verbindungsmittel 25 reduziert werden, da die auf das Brennstoffeinspritzventil 1 wirkende Kraft des unter hohem Druck stehenden Brennstoffs durch den erfindungsgemäßen Verbindungskörper 18 direkt an der Verbindungsstelle von Brennstoffeinspritzventil 1 und Brennstoffverteilerleitung 4 formschlüssig aufgenommen und nicht über die Verbindungsmittel 25 geleitet wird.The fuel distributor line 4 is fastened to the cylinder head 17 by means of connecting means 25, in the illustrated exemplary embodiment by means of screws. In addition to the decoupling of the fuel injection valve 1 from the cylinder head 17, it is also advantageous to provide damping disks 26 in this connection region of the fuel distributor line 4 and cylinder head 17. These damping discs 26 may be disposed in the region below the screw head with a support directly to the fuel rail 4 and / or with a support directly to the cylinder head 17, so that the high-pressure injection system consisting of fuel manifold 4 and a plurality of fuel injectors 1 to the cylinder head 17 out even more decoupled and is better soundproofed. Compared with known solutions, the force exerted on the connecting means 25 can be reduced because the force acting on the fuel injector 1 of the fuel under high pressure by the connecting body 18 according to the invention directly received positively at the junction of fuel injector 1 and fuel manifold 4 and not via the connecting means 25 is headed.

In der Figur 2 ist ein zweites Ausführungsbeispiel einer erfindungemäßen Brennstoffeinspritzvorrichtung dargestellt, wobei in dieser Figur und in allen weiteren Figuren die Darstellung auf den Anschlussstutzen 6 der Brennstoffverteilerleitung 4, auf das Brennstoffeinspritzventil 1 sowie den Verbindungskörper 18 beschränkt ist. Bei dem in Figur 2 gezeigten Ausführungsbeispiel ist als Verbindungskörper 18 eine Hülse vorgesehen, die den Abstand zwischen der Endfläche 14 des Anschlussstutzens 6 und der Schulter 12 am Brennstoffeinspritzventil 1 festlegt. Der Verbindungskörper 18 läuft z.B. nur um 270° um und besitzt eine Ausnehmung 19 für den Anschlussstecker 8 des Brennstoffeinspritzventils 1. Der hülsenförmige Verbindungskörper 18 ist sowohl an der Endfläche 14 als auch an der Schulter 12 mit der Brennstoffverteilerleitung 4 und dem Brennstoffeinspritzventil 1 fest verbunden. Die feste Verbindung wird z.B. über Schweißen, insbesondere Laserschweißen hergestellt, wobei Schweißnähte oder Schweißpunkte 27 vorgesehen werden können.In the FIG. 2 is a second embodiment of a erfindungemäßen fuel injector shown, in which figure and in all other figures, the representation of the connecting piece 6 of the fuel rail 4, the fuel injection valve 1 and the connecting body 18 is limited. At the in FIG. 2 As shown embodiment, a sleeve is provided as a connecting body 18, which defines the distance between the end surface 14 of the connecting piece 6 and the shoulder 12 on the fuel injection valve 1. The connecting body 18 runs, for example only around 270 ° and has a recess 19 for the connector 8 of the fuel injection valve 1. The sleeve-shaped connector body 18 is fixedly connected both to the end surface 14 and on the shoulder 12 with the fuel rail 4 and the fuel injection valve 1. The fixed connection is produced, for example, by welding, in particular laser welding, wherein welds or welds 27 can be provided.

In der Figur 3 ist ein drittes Ausführungsbeispiel einer erfindungemäßen Brennstoffeinspritzvorrichtung dargestellt. Bei dieser Ausführung ist ein ringförmiger Verbindungskörper 18 vorgesehen, der das Brennstoffeinspritzventil 1 an einem Flansch 28 untergreift. In unmittelbarer Wirkverbindung mit diesem Flansch 28 stehen z.B. zwei Axialschrauben 29, die sich einerseits in einer Aufnahmebohrung 30 der Brennstoffverteilerleitung 4, die sich beispielsweise an einem seitlichen Absatz an der Brennstoffverteilerleitung 4 befindet, abstützen und andererseits in den Verbindungskörper 18 eingreifen. Auf diese Weise kann das Brennstoffeinspritzventil 1 in den Anschlussstutzen 6 hinein gezogen werden. Der Verbindungskörper 18 ist z.B. ringförmig umlaufend ausgeführt, wobei zum Brennstoffeinspritzventil 1 hin nach innen abstehend im Bereich der zwei Axialschrauben 29 z.B. zwei Greifabschnitte 31 vorgesehen sind, die den Flansch 28 direkt untergreifen. Der Niederhalter 10 ist in dieser Figur und in allen weiteren Figuren nur symbolhaft als Feder dargestellt, wobei der Niederhalter 10 in idealer Weise als Bügelelement gemäß Figur 1 und der entsprechenden Beschreibung zu Figur 1 ausgebildet ist. Der Niederhalter 10 ist ähnlich wie beim ersten Ausführungsbeispiel gemäß Figur 1 zwischen der Endfläche 14 des Anschlussstutzens 6 und dem Flansch 28 am Brennstoffeinspritzventil 1 eingespannt.In the FIG. 3 a third embodiment of a erfindungemäßen fuel injection device is shown. In this embodiment, an annular connecting body 18 is provided, which engages under the fuel injection valve 1 on a flange 28. In direct operative connection with this flange 28 are, for example, two axial screws 29, which are supported on the one hand in a receiving bore 30 of the fuel distribution line 4, which is located for example on a lateral shoulder of the fuel distribution line 4, and on the other hand engage in the connecting body 18. In this way, the fuel injection valve 1 can be pulled into the connecting piece 6 into it. The connecting body 18 is designed, for example, annularly encircling, wherein the fuel injector 1 inwardly projecting in the region of the two axial screws 29, for example, two gripping portions 31 are provided which engage under the flange 28 directly. The hold-down 10 is shown in this figure and in all other figures only symbolically as a spring, the hold-down 10 in an ideal manner as ironing element according to FIG. 1 and the corresponding description FIG. 1 is trained. The hold-down 10 is similar to the first embodiment according to FIG. 1 between the end face 14 of the connecting piece 6 and the flange 28 is clamped to the fuel injection valve 1.

In der Figur 4 ist ein viertes Ausführungsbeispiel einer erfindungemäßen Brennstoffeinspritzvorrichtung dargestellt. Diese Brennstoffeinspritzvorrichtung zeichnet sich dadurch aus, dass ein Verbindungskörper 18 ausgebildet ist, der einerseits mit einem Haltekragen 21 das Brennstoffeinspritzventil 1 im Bereich einer Gehäuseschulter 20 untergreift und andererseits über eine nichtstoffschlüssige Verbindung, z.B. eine Clip-Verbindung mit dem Anschlussstutzen 6 verbunden ist. Der Verbindungskörper 18 ist rohrförmig ausgeführt und besitzt zum Durchgreifen des Anschlusssteckers 8 des Brennstoffeinspritzventils 1 eine Ausnehmung 19. Außerhalb dieser Ausnehmung 19 kann der Verbindungskörper 18 um 360° umlaufend ausgeführt sein. An der Gehäuseschulter 20 wird das Brennstoffeinspritzventil 1 von dem Haltekragen 21 oder mehreren Haltekragensegmenten des Verbindungskörpers 18 untergriffen, so dass das Brennstoffeinspritzventil 1 gegenüber einer radial verlaufenden Schulter 22 der Aufnahmebohrung 9 beabstandet frei hängt. Der Haltekragen 21 oder die mehreren Haltekragensegmenten des Verbindungskörpers 18, die das Brennstoffeinspritzventil 1 untergreifen, sind z.B. rechtwinklig endend ausgeführt, während die Gehäuseschulter 20 am Brennstoffeinspritzventil 1 beispielsweise konisch verläuft. An ihrem dem Anschlussstutzen 6 zugewandten Ende weist der Verbindungskörper 18 ein erstes Rastmittel 32 z.B. in Form einer Aufbauchung auf, während am Umfang des Anschlussstutzens 6 ein zweites Rastmittel 33 z.B. in Form einer Aufwölbung vorgesehen ist, die zusammen zu einer Rast- bzw. Clip-Verbindung korrespondieren. Die Aufwölbung 33 am Anschlussstutzen 6 ist z.B. mit einem Radius R ausgeführt, dessen Mittelpunkt auf der Ventillängsachse im Zentrum des Dichtrings 5 liegt. Der Doppelpfeil 34 soll andeuten, dass der erfindungsgemäße Verbindungskörper 18 in vorteilhafter Weise eine Kippbewegung des Brennstoffeinspritzventils 1 zum radialen Toleranzausgleich zwischen Zylinderkopf 17 und Brennstoffverteilerleitung 4 ermöglicht.In the FIG. 4 shows a fourth embodiment of a erfindungemäßen fuel injection device is shown. This fuel injection device is characterized in that a connecting body 18 is formed, which engages on the one hand with a retaining collar 21, the fuel injector 1 in the region of a housing shoulder 20 and on the other hand via a non-material connection, eg a clip connection with the connecting piece 6 is connected. The connecting body 18 is tubular and has to reach through the connector 8 of the fuel injector 1 a recess 19. Outside of this recess 19, the connecting body 18 may be performed by 360 ° rotating. At the housing shoulder 20, the fuel injection valve 1 is engaged by the retaining collar 21 or a plurality of retaining collar segments of the connecting body 18, so that the fuel injection valve 1 is freely suspended relative to a radially extending shoulder 22 of the receiving bore 9. The retaining collar 21 or the plurality of retaining collar segments of the connecting body 18, which engage under the fuel injection valve 1, for example, are executed at right angles ending, while the housing shoulder 20 extends at the fuel injection valve 1, for example, conical. At its end facing the connection piece 6, the connection body 18 has a first latching means 32, for example in the form of a bulge, while a second latching means 33, for example in the form of a bulge, is provided on the periphery of the connection piece 6, which together form a latching or clip-on projection. Connection correspond. The bulge 33 on the connecting piece 6 is designed, for example, with a radius R whose center lies on the valve longitudinal axis in the center of the sealing ring 5. The double arrow 34 is intended to indicate that the connecting body 18 according to the invention advantageously allows a tilting movement of the fuel injection valve 1 for the radial tolerance compensation between the cylinder head 17 and the fuel distributor line 4.

In der Figur 5 ist ein fünftes Ausführungsbeispiel einer erfindungemäßen Brennstoffeinspritzvorrichtung dargestellt. Diese Brennstoffeinspritzvorrichtung zeichnet sich in geringer Abwandlung der Ausführung gemäß Figur 4 ebenfalls dadurch aus, dass ein Verbindungskörper 18 ausgebildet ist, der einerseits mit einem Haltekragen 21 das Brennstoffeinspritzventil 1 im Bereich einer Gehäuseschulter 20 untergreift und andererseits über eine nichtstoffschlüssige Verbindung, hier eine Rast-Verbindung mit Schraubsicherung mit dem Anschlussstutzen 6 verbunden ist. Der Verbindungskörper 18 ist rohrförmig mit einer Stufung ausgeführt und besitzt zum Durchgreifen des Anschlusssteckers 8 des Brennstoffeinspritzventils 1 eine Ausnehmung 19. Außerhalb dieser Ausnehmung 19 kann der Verbindungskörper 18 um 360° umlaufend ausgeführt sein. An der Gehäuseschulter 20 wird das Brennstoffeinspritzventil 1 von dem Haltekragen 21 oder mehreren Haltekragensegmenten des Verbindungskörpers 18 untergriffen, so dass das Brennstoffeinspritzventil 1 gegenüber einer radial verlaufenden Schulter 22 der Aufnahmebohrung 9 beabstandet frei hängt. Der Haltekragen 21 oder die mehreren Haltekragensegmenten des Verbindungskörpers 18, die das Brennstoffeinspritzventil 1 untergreifen, sind z.B. rechtwinklig endend ausgeführt, während die Gehäuseschulter 20 am Brennstoffeinspritzventil 1 beispielsweise konisch verläuft. An ihrem dem Anschlussstutzen 6 zugewandten Ende weist der Verbindungskörper 18 einen Ringkragen 35 auf, der eine konische Abstützfläche 36 besitzt. Mit dieser Abstützfläche 36 stützt sich der Ringkragen 35 des Verbindungskörpers 18 an einem Befestigungsring 37 ab, der z.B. eine dem Ringkragen 35 zugewandte gewölbte Fläche aufweist und der auf einem stromabwärtigen Kragen 15 des Anschlussstutzens 6 aufliegt. Gegen Abrutschen des Verbindungskörpers 18 von dem Befestigungsring 37 und damit vom Anschlussstutzen 6 gesichert ist die Verbindung durch eine ein Innengewinde aufweisende Sicherungsmutter 38, die mit einem Außengewinde 39 am Umfang des Anschlussstutzens 6 korrespondiert.In the FIG. 5 shows a fifth embodiment of a erfindungemäßen fuel injection device is shown. This fuel injection device is characterized in minor modification of the embodiment according to FIG. 4 also by the fact that a connecting body 18 is formed, which engages on the one hand with a retaining collar 21, the fuel injection valve 1 in the region of a housing shoulder 20 and on the other hand via a non-material connection, here a locking connection with screw connection to the connecting piece 6 is connected. The connecting body 18 is designed in a tubular shape with a gradation and has to reach through the connector 8 of the fuel injector 1 a recess 19. Outside this recess 19, the connecting body 18 may be performed by 360 ° encircling. At the housing shoulder 20, the fuel injection valve 1 is engaged by the retaining collar 21 or a plurality of retaining collar segments of the connecting body 18 so that the fuel injection valve 1 is freely suspended from a radially extending shoulder 22 of the receiving bore 9. The retaining collar 21 or the plurality of retaining collar segments of the connecting body 18, which engage under the fuel injection valve 1, for example, are executed at right angles ending, while the housing shoulder 20 extends at the fuel injection valve 1, for example, conical. At her the connecting piece 6 facing the end of the connecting body 18 has an annular collar 35 which has a conical support surface 36. With this support surface 36, the annular collar 35 of the connecting body 18 is supported on a fastening ring 37 which, for example, has a curved surface facing the annular collar 35 and rests on a downstream collar 15 of the connecting piece 6. Against slipping of the connecting body 18 of the mounting ring 37 and thus secured by the connecting piece 6, the connection by an internal thread having a lock nut 38 which corresponds to an external thread 39 on the circumference of the connecting piece 6.

In der Figur 6 ist ein sechstes Ausführungsbeispiel einer erfindungemäßen Brennstoffeinspritzvorrichtung dargestellt. Bei dem in Figur 6 gezeigten Ausführungsbeispiel ist als Verbindungskörper 18 eine topfförmige Hülse vorgesehen, die am stromabwärtigen Ende des Anschlussstutzens 6 sicher und fest angeordnet ist. Der Verbindungskörper 18 weist einen Mantelabschnitt 41 und einen Bodenabschnitt 42 auf, wobei der Mantelabschnitt 41 z.B. mittels Form- und/oder Kraftschluss z.B. durch Aufpressen 43 auf dem Umfang des Anschlussstutzens 6 befestigt ist. Dabei ist bei kraftschlüssiger Verbindung die Eindringtiefe des Brennstoffeinspritzventils 1 in den Anschlussstutzen 6 über die axiale Position des Verbindungskörpers 18 einstellbar. Im Bodenabschnitt 42 ist eine mittlere Öffnung 44 vorgesehen, die von einem verjüngten Bereich 45 des Brennstoffeinspritzventils 1 durchgriffen wird. Um das Brennstoffeinspritzventil 1 in die Öffnung 44 einführen zu können, ist im Bodenabschnitt 42 des Verbindungskörpers 18 ausgehend von der Öffnung 44 eine schlitzartige Erweiterung oder eine Erweiterung als radiusgrößeres Loch ausgebildet. Der Niederhalter 10 ist zwischen dem Bodenabschnitt 42 des Verbindungskörpers 18 und der Schulter 12 am Brennstoffeinspritzventil 1 eingespannt.In the FIG. 6 is a sixth embodiment of a erfindungemäßen fuel injection device shown. At the in FIG. 6 shown embodiment, a pot-shaped sleeve is provided as a connecting body 18, which is 6 securely and firmly arranged at the downstream end of the connecting piece. The connecting body 18 has a skirt portion 41 and a bottom portion 42, wherein the skirt portion 41 is fixed, for example by means of positive and / or non-positive, for example by pressing 43 on the circumference of the connecting piece 6. In this case, the penetration depth of the fuel injection valve 1 in the connecting piece 6 via the axial position of the connecting body 18 is adjustable with non-positive connection. In the bottom portion 42, a central opening 44 is provided, which is penetrated by a tapered portion 45 of the fuel injection valve 1. To be able to introduce the fuel injection valve 1 into the opening 44, in the bottom portion 42 of the connecting body 18, starting from the opening 44, a slot-like widening or enlargement is formed as a radius-larger hole. The hold-down 10 is clamped between the bottom portion 42 of the connecting body 18 and the shoulder 12 on the fuel injection valve 1.

In der Figur 7 ist ein siebtes Ausführungsbeispiel einer erfindungemäßen Brennstoffeinspritzvorrichtung dargestellt. Im Bereich seines Zulaufstutzens 7 besitzt das Brennstoffeinspritzventil 1 einen radial nach außen ragenden Flansch 46. Der Verbindungskörper 18 ist in Form einer Sicherungsmutter 38 ausgeführt. An ihrem dem Anschlussstutzen 6 zugewandten Ende weist der Verbindungskörper 18 einen ein Innengewinde beinhaltenden Abschnitt auf, an den sich ein Ringkragen 47 anschließt, der eine konische Abstützfläche 48 besitzt. Mit dieser Abstützfläche 48 stützt sich der Ringkragen 47 des Verbindungskörpers 18, 38 an dem Flansch 46 ab, der z.B. eine dem Ringkragen 47 zugewandte gewölbte Fläche aufweist. Die Sicherungsmutter 38 korrespondiert mit einem Außengewinde 39 am Umfang des Anschlussstutzens 6. Mit der an dem Flansch 46 des Brennstoffeinspritzventils 1 angreifenden Sicherungsmutter 38 kann die Eindringtiefe des Brennstoffeinspritzventils 1 im Anschlussstutzen 6 eingestellt werden. Der Niederhalter 10 ist zwischen dem Ringkragen 47 der Sicherungsmutter 38 und der Schulter 12 am Brennstoffeinspritzventil 1 eingespannt.In the FIG. 7 shows a seventh embodiment of a erfindungemäßen fuel injection device is shown. In the region of its inlet nozzle 7, the fuel injection valve 1 has a radially outwardly projecting flange 46. The connecting body 18 is designed in the form of a lock nut 38. At its end facing the connecting piece 6, the connecting body 18 has a section containing an internal thread, to which an annular collar 47 adjoins, which has a conical supporting surface 48. With this support surface 48, the annular collar is supported 47 of the connecting body 18, 38 on the flange 46, for example, has a the annular collar 47 facing curved surface. The locking nut 38 corresponds to an external thread 39 on the circumference of the connection piece 6. The penetration depth of the fuel injection valve 1 in the connecting piece 6 can be set with the securing nut 38 acting on the flange 46 of the fuel injection valve 1. The hold-down 10 is clamped between the annular collar 47 of the lock nut 38 and the shoulder 12 on the fuel injection valve 1.

In der Figur 8 ist ein achtes Ausführungsbeispiel einer erfindungemäßen Brennstoffeinspritzvorrichtung dargestellt. Diese Brennstoffeinspritzvorrichtung zeichnet sich besonders durch ihren sehr einfachen Aufbau aus. Das Brennstoffeinspritzventil 1 ist unmittelbar mit seinem Zulaufstutzen 7 im Anschlussstutzen 6 der Brennstoffverteilerleitung 4 befestigt. Die feste Verbindung 49 wird z.B. mittels Kraftschluss, Formschluss und/oder Stoffschluss erzielt. Denkbar sind u.a. Schweiß- oder Lötverbindungen sowie das Einpressen des Zulaufstutzens 7 im Anschlussstutzen 6 zur Bildung einer metallischen Presspassung. Dabei ist die Eindringtiefe des Brennstoffeinspritzventils 1 in den Anschlussstutzen 6 einstellbar. Der mit dem Doppelpfeil 34 angedeutete Toleranzausgleich ist hier ausschließlich über eine in geeigneter Weise vorsehbare Flexibilität des Brennstoffeinspritzventils 1 möglich.In the FIG. 8 an eighth embodiment of a erfindungemäßen fuel injection device is shown. This fuel injection device is characterized by its very simple structure. The fuel injection valve 1 is attached directly to its inlet nozzle 7 in the connecting piece 6 of the fuel distributor line 4. The fixed connection 49 is achieved for example by means of adhesion, positive connection and / or material connection. Weldable or soldered connections and the pressing in of the inlet connection 7 in the connecting piece 6 are conceivable, for example, to form a metallic interference fit. In this case, the penetration depth of the fuel injection valve 1 in the connecting piece 6 is adjustable. The tolerance compensation indicated by the double arrow 34 is possible here exclusively via a suitably foreseeable flexibility of the fuel injection valve 1.

In der Figur 9 ist ein neuntes Ausführungsbeispiel einer erfindungemäßen Brennstoffeinspritzvorrichtung dargestellt. Diese Brennstoffeinspritzvorrichtung zeichnet sich dadurch aus, dass ein Verbindungskörper 18 ausgebildet ist, der einerseits mit einem Haltekragen 21 das Brennstoffeinspritzventil 1 im Bereich einer Gehäuseschulter 20 untergreift und andererseits über eine nichtstoffschlüssige Verbindung, z.B. eine Rast-Verbindung mit dem Anschlussstutzen 6 verbunden ist. Der Verbindungskörper 18 ist rohrförmig ausgeführt und besitzt zum Durchgreifen des Anschlusssteckers 8 des Brennstoffeinspritzventils 1 eine Ausnehmung 19. Außerhalb dieser Ausnehmung 19 kann der Verbindungskörper 18 um 360° umlaufend ausgeführt sein. An der Gehäuseschulter 20 wird das Brennstoffeinspritzventil 1 von dem Haltekragen 21 oder mehreren Haltekragensegmenten des Verbindungskörpers 18 untergriffen, so dass das Brennstoffeinspritzventil 1 gegenüber einer radial verlaufenden Schulter 22 der Aufnahmebohrung 9 beabstandet frei hängt. Der Haltekragen 21 oder die mehreren Haltekragensegmenten des Verbindungskörpers 18, die das Brennstoffeinspritzventil 1 untergreifen, sind z.B. rechtwinklig endend ausgeführt, während die Gehäuseschulter 20 am Brennstoffeinspritzventil 1 beispielsweise konisch verläuft. Zwischen der Gehäuseschulter 20 und dem Haltekragen 21 ist noch ein Stützring 50 eingelegt, der der Gehäuseschulter 20 zugewandt eine gewölbte Anlagefläche besitzt. Auf diese Weise kann das Brennstoffeinspritzventil 1 gegenüber dem Verbindungskörper 18 auf dem Stützring 50 gleiten und Toleranzen ausgleichen. An ihrem dem Anschlussstutzen 6 zugewandten Ende weist der Verbindungskörper 18 ein Rastmittel 52 z.B. in Form einer oder mehrerer Rastnasen auf, die einen Kragen 15 am stromabwärtigen Ende des Anschlussstutzens 6 übergreifen und somit zusammen zu einer Rast-Verbindung korrespondieren. Der Doppelpfeil 34 soll andeuten, dass der erfindungsgemäße Verbindungskörper 18 in vorteilhafter Weise eine Kippbewegung des Brennstoffeinspritzventils 1 zum radialen Toleranzausgleich zwischen Zylinderkopf 17 und Brennstoffverteilerleitung 4 ermöglicht. Der Niederhalter 10 ist ähnlich wie beim ersten Ausführungsbeispiel gemäß Figur 1 zwischen der Endfläche 14 des Anschlussstutzens 6 und der Schulter 12 am Brennstoffeinspritzventil 1 eingespannt.In the FIG. 9 a ninth embodiment of a erfindungemäßen fuel injection device is shown. This fuel injection device is characterized in that a connecting body 18 is formed, which engages on the one hand with a retaining collar 21, the fuel injection valve 1 in the region of a housing shoulder 20 and on the other hand via a non-material connection, eg a latching connection with the connecting piece 6 is connected. The connecting body 18 is tubular and has to reach through the connector 8 of the fuel injector 1 a recess 19. Outside of this recess 19, the connecting body 18 may be performed by 360 ° rotating. At the housing shoulder 20, the fuel injection valve 1 is engaged by the retaining collar 21 or a plurality of retaining collar segments of the connecting body 18 so that the fuel injection valve 1 is freely suspended from a radially extending shoulder 22 of the receiving bore 9. The retaining collar 21 or the plurality of retaining collar segments of the connecting body 18, which engage under the fuel injection valve 1, For example, are executed at right angles ending, while the housing shoulder 20 extends on the fuel injector 1, for example, conical. Between the housing shoulder 20 and the retaining collar 21, a support ring 50 is still inserted, which has the housing shoulder 20 facing a curved contact surface. In this way, the fuel injection valve 1 with respect to the connecting body 18 slide on the support ring 50 and compensate for tolerances. At its end facing the connecting piece 6, the connecting body 18 has a latching means 52, for example in the form of one or more latching lugs, which engage over a collar 15 at the downstream end of the connecting piece 6 and thus together correspond to a latching connection. The double arrow 34 is intended to indicate that the connecting body 18 according to the invention advantageously allows a tilting movement of the fuel injection valve 1 for the radial tolerance compensation between the cylinder head 17 and the fuel distributor line 4. The hold-down 10 is similar to the first embodiment according to FIG. 1 clamped between the end surface 14 of the connecting piece 6 and the shoulder 12 on the fuel injection valve 1.

In den Figuren 10 und 11 ist ein zehntes Ausführungsbeispiel einer erfindungemäßen Brennstoffeinspritzvorrichtung dargestellt. Diese Brennstoffeinspritzvorrichtung zeichnet sich dadurch aus, dass ein Verbindungskörper 18 ausgebildet ist, der einerseits mit einem Haltekragen 21 das Brennstoffeinspritzventil 1 im Bereich einer Gehäuseschulter 20 untergreift und andererseits über eine nichtstoffschlüssige Verbindung, z.B. eine Schnapp-Verbindung mit dem Anschlussstutzen 6 verbunden ist. Der Verbindungskörper 18 ist rohrförmig ausgeführt und besitzt zum Durchgreifen des Anschlusssteckers 8 des Brennstoffeinspritzventils 1 eine Ausnehmung 19. Außerhalb dieser Ausnehmung 19 kann der Verbindungskörper 18 um 360° umlaufend ausgeführt sein. An der Gehäuseschulter 20 wird das Brennstoffeinspritzventil 1 von dem Haltekragen 21 oder mehreren Haltekragensegmenten des Verbindungskörpers 18 untergriffen, so dass das Brennstoffeinspritzventil 1 gegenüber einer radial verlaufenden Schulter 22 der Aufnahmebohrung 9 beabstandet frei hängt. Der Haltekragen 21 oder die mehreren Haltekragensegmenten des Verbindungskörpers 18, die das Brennstoffeinspritzventil 1 untergreifen, sind z.B. zur Gehäuseschulter 20 hin gewölbt ausgeführt, während die Gehäuseschulter 20 am Brennstoffeinspritzventil 1 beispielsweise konisch verläuft. An ihrem dem Anschlussstutzen 6 zugewandten Ende weist der Verbindungskörper 18 über den Umfang gesehen zwei gegenüberliegende Schlitze 53 auf, die z.B. eine Ausdehnung von ca. 90° besitzen. Die Schlitze 53 werden von einem bügelförmigen, U-förmigen Schnappring 54 durchgriffen. Der Schnappring 54 greift zudem im Umfangsbereich der Schlitze 53 in dem Verbindungskörper 18 in zwei schlitzförmige Nuten 55 am Umfang des Anschlussstutzens 6 zur sicheren Befestigung des Verbindungskörpers 18 an der Brennstoffverteilerleitung 4 ein. Der Niederhalter 10 ist ähnlich wie beim ersten Ausführungsbeispiel gemäß Figur 1 zwischen der Endfläche 14 des Anschlussstutzens 6 und der Schulter 12 am Brennstoffeinspritzventil 1 eingespannt.In the FIGS. 10 and 11 a tenth embodiment of a erfindungemäßen fuel injection device is shown. This fuel injection device is characterized in that a connecting body 18 is formed, which engages on the one hand with a retaining collar 21, the fuel injection valve 1 in the region of a housing shoulder 20 and on the other hand via a non-material connection, such as a snap connection with the connecting piece 6 is connected. The connecting body 18 is tubular and has to reach through the connector 8 of the fuel injector 1 a recess 19. Outside of this recess 19, the connecting body 18 may be performed by 360 ° rotating. At the housing shoulder 20, the fuel injection valve 1 is engaged by the retaining collar 21 or a plurality of retaining collar segments of the connecting body 18 so that the fuel injection valve 1 is freely suspended from a radially extending shoulder 22 of the receiving bore 9. The retaining collar 21 or the plurality of retaining collar segments of the connecting body 18, which engage under the fuel injection valve 1, are curved, for example, toward the housing shoulder 20, while the housing shoulder 20 on the fuel injection valve 1, for example, runs conically. At its end facing the connecting piece 6, the connecting body 18, viewed over the circumference, has two opposing slots 53 which, for example, have an extension of about 90 °. The slots 53 are penetrated by a bow-shaped, U-shaped snap ring 54. The snap ring 54 also engages in the peripheral region of the slots 53 in the connecting body 18 in two slot-shaped grooves 55 on the circumference of the connecting piece 6 for secure attachment of the connecting body 18 to the fuel rail 4 a. The hold-down 10 is similar to the first embodiment according to FIG. 1 clamped between the end surface 14 of the connecting piece 6 and the shoulder 12 on the fuel injection valve 1.

In der Figur 12 ist ein elftes Ausführungsbeispiel einer erfindungemäßen Brennstoffeinspritzvorrichtung dargestellt. Im Bereich seines Zulaufstutzens 7 besitzt das Brennstoffeinspritzventil 1 einen in einer Nut eingelegten Drahtring 56. Der Verbindungskörper 18 ist in Form einer Sicherungsmutter 38 ausgeführt. An ihrem dem Anschlussstutzen 6 zugewandten Ende weist der Verbindungskörper 18 einen ein Innengewinde beinhaltenden Abschnitt auf, an den sich ein Ringkragen 47 anschließt, der eine gewölbte Abstützfläche 57 in Form einer Kugelpfanne besitzt. Mit dieser Abstützfläche 57 stützt sich der Ringkragen 47 des Verbindungskörpers 18, 38 an dem Drahtring 56 ab, der mit seiner Wölbung in dem Ringkragen 47 aufgenommen wird. Die Abstützfläche 57 am Ringkragen 47 der Sicherungsmutter 38 ist z.B. mit einem Radius R ausgeführt, dessen Mittelpunkt auf der Ventillängsachse im Zentrum des Dichtrings 5 liegt. Die Sicherungsmutter 38 korrespondiert mit einem Außengewinde 39 am Umfang des Anschlussstutzens 6. Mit der an dem Drahtring 56 des Brennstoffeinspritzventils 1 angreifenden Sicherungsmutter 38 kann die Eindringtiefe des Brennstoffeinspritzventils 1 im Anschlussstutzen 6 eingestellt werden. Der Niederhalter 10 ist zwischen dem Ringkragen 47 der Sicherungsmutter 38 und der Schulter 12 am Brennstoffeinspritzventil 1 eingespannt. Der Doppelpfeil 34 soll andeuten, dass der erfindungsgemäße Verbindungskörper 18 in vorteilhafter Weise eine Kippbewegung des Brennstoffeinspritzventils 1 zum radialen Toleranzausgleich zwischen Zylinderkopf 17 und Brennstoffverteilerleitung 4 ermöglicht.In the FIG. 12 an eleventh embodiment of a erfindungemäßen fuel injection device is shown. In the region of its inlet connection 7, the fuel injection valve 1 has a wire ring 56 inserted in a groove. The connection body 18 is designed in the form of a lock nut 38. At its end facing the connecting piece 6, the connecting body 18 has a section containing an internal thread, to which an annular collar 47 adjoins, which has a curved support surface 57 in the form of a ball socket. With this support surface 57, the annular collar 47 of the connecting body 18, 38 is supported on the wire ring 56, which is received with its curvature in the annular collar 47. The support surface 57 on the annular collar 47 of the lock nut 38 is designed, for example, with a radius R whose center lies on the valve longitudinal axis in the center of the sealing ring 5. The locking nut 38 corresponds to an external thread 39 on the circumference of the connection piece 6. The penetration depth of the fuel injection valve 1 in the connection piece 6 can be adjusted with the locking nut 38 acting on the wire ring 56 of the fuel injection valve 1. The hold-down 10 is clamped between the annular collar 47 of the lock nut 38 and the shoulder 12 on the fuel injection valve 1. The double arrow 34 is intended to indicate that the connecting body 18 according to the invention advantageously allows a tilting movement of the fuel injection valve 1 for the radial tolerance compensation between the cylinder head 17 and the fuel distributor line 4.

In der Figur 13 ist ein zwölftes Ausführungsbeispiel einer erfindungemäßen Brennstoffeinspritzvorrichtung dargestellt. Diese Brennstoffeinspritzvorrichtung zeichnet sich dadurch aus, dass ein Verbindungskörper 18 ausgebildet ist, der einerseits mit einem Haltekragen 21 das Brennstoffeinspritzventil 1 im Bereich einer Gehäuseschulter 20 untergreift und andererseits über eine kraft- und/oder stoffschlüssige Verbindung mit dem Anschlussstutzen 6 verbunden ist. Der Verbindungskörper 18 ist rohrförmig ausgeführt und besitzt zum Durchgreifen des Anschlusssteckers 8 des Brennstoffeinspritzventils 1 eine Ausnehmung 19. Außerhalb dieser Ausnehmung 19 kann der Verbindungskörper 18 um 360° umlaufend ausgeführt sein. An der Gehäuseschulter 20 wird das Brennstoffeinspritzventil 1 von dem Haltekragen 21 oder mehreren Haltekragensegmenten des Verbindungskörpers 18 untergriffen, so dass das Brennstoffeinspritzventil 1 gegenüber einer radial verlaufenden Schulter 22 der Aufnahmebohrung 9 beabstandet frei hängt. Der Haltekragen 21 oder die mehreren Haltekragensegmenten des Verbindungskörpers 18, die das Brennstoffeinspritzventil 1 untergreifen, sind z.B. rechtwinklig endend ausgeführt, während die Gehäuseschulter 20 am Brennstoffeinspritzventil 1 beispielsweise konisch verläuft. Zwischen der Gehäuseschulter 20 und dem Haltekragen 21 ist noch ein Stützring 50 eingelegt, der der Gehäuseschulter 20 zugewandt eine gewölbte Anlagefläche besitzt. Auf diese Weise kann das Brennstoffeinspritzventil 1 gegenüber dem Verbindungskörper 18 auf dem Stützring 50 gleiten und Toleranzen ausgleichen. An ihrem dem Anschlussstutzen 6 zugewandten Ende ist der Verbindungskörper 18 unmittelbar am äußeren Umfang des Anschlussstutzens 6 der Brennstoffverteilerleitung 4 befestigt. Die feste Verbindung 49 wird z.B. mittels Kraftschluss, Formschluss und/oder Stoffschluss erzielt. Denkbar sind u.a. Schweiß- oder Lötverbindungen sowie das Aufpressen des Verbindungskörpers 18 auf den Anschlussstutzen 6 zur Bildung einer metallischen Presspassung. Dabei ist die Eindringtiefe des Brennstoffeinspritzventils 1 in den Anschlussstutzen 6 einstellbar. Der Doppelpfeil 34 soll andeuten, dass der erfindungsgemäße Verbindungskörper 18 in vorteilhafter Weise eine Kippbewegung des Brennstoffeinspritzventils 1 zum radialen Toleranzausgleich zwischen Zylinderkopf 17 und Brennstoffverteilerleitung 4 ermöglicht. Der Niederhalter 10 ist ähnlich wie beim ersten Ausführungsbeispiel gemäß Figur 1 zwischen der Endfläche 14 des Anschlussstutzens 6 und der Schulter 12 am Brennstoffeinspritzventil 1 eingespannt.In the FIG. 13 is a twelfth embodiment of a erfindungemäßen fuel injection device shown. This fuel injection device is characterized in that a connecting body 18 is formed, which engages on the one hand with a retaining collar 21, the fuel injection valve 1 in the region of a housing shoulder 20 and on the other hand via a non-positive and / or cohesive connection the connection piece 6 is connected. The connecting body 18 is tubular and has to reach through the connector 8 of the fuel injector 1 a recess 19. Outside of this recess 19, the connecting body 18 may be performed by 360 ° rotating. At the housing shoulder 20, the fuel injection valve 1 is engaged by the retaining collar 21 or a plurality of retaining collar segments of the connecting body 18 so that the fuel injection valve 1 is freely suspended from a radially extending shoulder 22 of the receiving bore 9. The retaining collar 21 or the plurality of retaining collar segments of the connecting body 18, which engage under the fuel injection valve 1, for example, are executed at right angles ending, while the housing shoulder 20 extends at the fuel injection valve 1, for example, conical. Between the housing shoulder 20 and the retaining collar 21, a support ring 50 is still inserted, which has the housing shoulder 20 facing a curved contact surface. In this way, the fuel injection valve 1 with respect to the connecting body 18 slide on the support ring 50 and compensate for tolerances. At its end facing the connecting piece 6, the connecting body 18 is fastened directly on the outer periphery of the connecting piece 6 of the fuel distributor line 4. The fixed connection 49 is achieved for example by means of adhesion, positive connection and / or material connection. Weldable or soldered joints and the pressing on of the connecting body 18 on the connecting piece 6 are conceivable, for example, to form a metallic interference fit. In this case, the penetration depth of the fuel injection valve 1 in the connecting piece 6 is adjustable. The double arrow 34 is intended to indicate that the connecting body 18 according to the invention advantageously allows a tilting movement of the fuel injection valve 1 for the radial tolerance compensation between the cylinder head 17 and the fuel distributor line 4. The hold-down 10 is similar to the first embodiment according to FIG. 1 clamped between the end surface 14 of the connecting piece 6 and the shoulder 12 on the fuel injection valve 1.

In der Figur 14 ist ein dreizehntes Ausführungsbeispiel einer erfindungemäßen Brennstoffeinspritzvorrichtung dargestellt. Diese Brennstoffeinspritzvorrichtung zeichnet sich dadurch aus, dass ein Verbindungskörper 18 ausgebildet ist, der einerseits mit einem Haltekragen 21 das Brennstoffeinspritzventil 1 im Bereich einer Gehäuseschulter 20 untergreift und andererseits über eine stoffschlüssige Verbindung mit dem Anschlussstutzen 6 verbunden ist. Der Verbindungskörper 18 ist rohrförmig ausgeführt und besitzt zum Durchgreifen des Anschlusssteckers 8 des Brennstoffeinspritzventils 1 eine Ausnehmung 19. Außerhalb dieser Ausnehmung 19 kann der Verbindungskörper 18 um 360° umlaufend ausgeführt sein. An der Gehäuseschulter 20 wird das Brennstoffeinspritzventil 1 von dem Haltekragen 21 oder mehreren Haltekragensegmenten des Verbindungskörpers 18 untergriffen, so dass das Brennstoffeinspritzventil 1 gegenüber einer radial verlaufenden Schulter 22 der Aufnahmebohrung 9 beabstandet frei hängt. Der Haltekragen 21 oder die mehreren Haltekragensegmenten des Verbindungskörpers 18, die das Brennstoffeinspritzventil 1 untergreifen, sind z.B. rechtwinklig endend ausgeführt, während die Gehäuseschulter 20 am Brennstoffeinspritzventil 1 beispielsweise konisch verläuft. Zwischen der Gehäuseschulter 20 und dem Haltekragen 21 ist noch ein Stützring 50 eingelegt, der der Gehäuseschulter 20 zugewandt eine gewölbte Anlagefläche besitzt. Auf diese Weise kann das Brennstoffeinspritzventil 1 gegenüber dem Verbindungskörper 18 auf dem Stützring 50 gleiten und Toleranzen ausgleichen. An ihrem dem Anschlussstutzen 6 zugewandten Ende ist der Verbindungskörper 18 unmittelbar an der stromabwärtigen Endfläche 14 eines radial nach außen stehenden Kragens 15 des Anschlussstutzens 6 der Brennstoffverteilerleitung 4 befestigt. Die feste Verbindung 49 wird z.B. mittels Widerstandsschweißen erzielt. Der Niederhalter 10 ist ähnlich wie beim ersten Ausführungsbeispiel gemäß Figur 1 zwischen der Endfläche 14 des Anschlussstutzens 6 und der Schulter 12 am Brennstoffeinspritzventil 1 eingespannt.In the FIG. 14 a thirteenth embodiment of a erfindungemäßen fuel injection device is shown. This fuel injection device is characterized in that a connecting body 18 is formed, which engages on the one hand with a retaining collar 21, the fuel injection valve 1 in the region of a housing shoulder 20 and on the other hand is connected via a material connection with the connecting piece 6. The connecting body 18 is tubular and has for reaching through the connector 8 of the fuel injection valve 1, a recess 19. Outside this recess 19, the connector body 18 may be performed by 360 ° encircling. At the housing shoulder 20, the fuel injection valve 1 is engaged by the retaining collar 21 or a plurality of retaining collar segments of the connecting body 18 so that the fuel injection valve 1 is freely suspended from a radially extending shoulder 22 of the receiving bore 9. The retaining collar 21 or the plurality of retaining collar segments of the connecting body 18, which engage under the fuel injection valve 1, for example, are executed at right angles ending, while the housing shoulder 20 extends at the fuel injection valve 1, for example, conical. Between the housing shoulder 20 and the retaining collar 21, a support ring 50 is still inserted, which has the housing shoulder 20 facing a curved contact surface. In this way, the fuel injection valve 1 with respect to the connecting body 18 slide on the support ring 50 and compensate for tolerances. At its end facing the connecting piece 6, the connecting body 18 is fastened directly to the downstream end face 14 of a radially outwardly projecting collar 15 of the connection piece 6 of the fuel distributor line 4. The fixed connection 49 is achieved for example by means of resistance welding. The hold-down 10 is similar to the first embodiment according to FIG. 1 clamped between the end surface 14 of the connecting piece 6 and the shoulder 12 on the fuel injection valve 1.

In der Figur 15 ist ein vierzehntes Ausführungsbeispiel einer erfindungemäßen Brennstoffeinspritzvorrichtung dargestellt. Diese Brennstoffeinspritzvorrichtung zeichnet sich dadurch aus, dass ein Verbindungskörper 18 ausgebildet ist, der einerseits mit einem Haltekragen 21 das Brennstoffeinspritzventil 1 im Bereich einer Gehäuseschulter 20 untergreift und andererseits über eine Schraubverbindung mit dem Anschlussstutzen 6 verbunden ist. Der Verbindungskörper 18 ist rohrförmig ausgeführt und besitzt zum Durchgreifen des Anschlusssteckers 8 des Brennstoffeinspritzventils 1 eine Ausnehmung 19. Außerhalb dieser Ausnehmung 19 kann der Verbindungskörper 18 um 360° umlaufend ausgeführt sein. An der Gehäuseschulter 20 wird das Brennstoffeinspritzventil 1 von dem Haltekragen 21 oder mehreren Haltekragensegmenten des Verbindungskörpers 18 untergriffen, so dass das Brennstoffeinspritzventil 1 gegenüber einer radial verlaufenden Schulter 22 der Aufnahmebohrung 9 beabstandet frei hängt. Der Haltekragen 21 oder die mehreren Haltekragensegmenten des Verbindungskörpers 18, die das Brennstoffeinspritzventil 1 untergreifen, sind z.B. rechtwinklig endend ausgeführt, während die Gehäuseschulter 20 am Brennstoffeinspritzventil 1 beispielsweise konisch verläuft. Zwischen der Gehäuseschulter 20 und dem Haltekragen 21 ist noch ein Stützring 50 eingelegt, der der Gehäuseschulter 20 zugewandt eine gewölbte Anlagefläche besitzt. Auf diese Weise kann das Brennstoffeinspritzventil 1 gegenüber dem Verbindungskörper 18 auf dem Stützring 50 gleiten und Toleranzen ausgleichen. An ihrem dem Anschlussstutzen 6 zugewandten Ende wird der Verbindungskörper 18 von einer Sicherungsmutter 38 untergriffen. An ihrem dem Anschlussstutzen 6 zugewandten Ende weist die Sicherungsmutter 38 einen ein Innengewinde beinhaltenden Abschnitt auf, an den sich ein Ringkragen 47 anschließt. Dieser Ringkragen 47 greift unter einen radial nach außen stehenden Bund 58 des Verbindungskörpers 18. Die Sicherungsmutter 38 korrespondiert mit einem Außengewinde 39 am Umfang des Anschlussstutzens 6. Mit der an dem Bund 58 des Verbindungskörpers 18 angreifenden Sicherungsmutter 38 kann die Eindringtiefe des Brennstoffeinspritzventils 1 im Anschlussstutzen 6 eingestellt werden. Der Doppelpfeil 34 soll andeuten, dass der erfindungsgemäße Verbindungskörper 18 in vorteilhafter Weise eine Kippbewegung des Brennstoffeinspritzventils 1 zum radialen Toleranzausgleich zwischen Zylinderkopf 17 und Brennstoffverteilerleitung 4 ermöglicht. Der Niederhalter 10 ist ähnlich wie beim ersten Ausführungsbeispiel gemäß Figur 1 zwischen der Endfläche 14 des Anschlussstutzens 6 und der Schulter 12 am Brennstoffeinspritzventil 1 eingespannt.In the FIG. 15 a fourteenth embodiment of a erfindungemäßen fuel injection device is shown. This fuel injection device is characterized in that a connecting body 18 is formed, which engages on the one hand with a retaining collar 21, the fuel injection valve 1 in the region of a housing shoulder 20 and on the other hand is connected via a screw connection with the connecting piece 6. The connecting body 18 is tubular and has to reach through the connector 8 of the fuel injector 1 a recess 19. Outside of this recess 19, the connecting body 18 may be performed by 360 ° rotating. At the housing shoulder 20, the fuel injection valve 1 is engaged by the retaining collar 21 or a plurality of retaining collar segments of the connecting body 18 so that the fuel injection valve 1 is freely suspended from a radially extending shoulder 22 of the receiving bore 9. The retaining collar 21 or the plurality of retaining collar segments of the connecting body 18, which engage under the fuel injector 1, for example, executed at right angles ending, while the housing shoulder 20 extends on the fuel injection valve 1, for example, conical. Between the housing shoulder 20 and the retaining collar 21, a support ring 50 is still inserted, which has the housing shoulder 20 facing a curved contact surface. In this way, the fuel injection valve 1 with respect to the connecting body 18 slide on the support ring 50 and compensate for tolerances. At its end facing the connecting piece 6, the connecting body 18 is engaged by a locking nut 38. At its end facing the connecting piece 6, the securing nut 38 has a section containing an internal thread, to which an annular collar 47 adjoins. The locking nut 38 engages with an external thread 39 on the circumference of the connecting piece 6. With the engaging on the collar 58 of the connecting body 18 locking nut 38, the penetration depth of the fuel injection valve 1 in the connecting piece 6 are set. The double arrow 34 is intended to indicate that the connecting body 18 according to the invention advantageously allows a tilting movement of the fuel injection valve 1 for the radial tolerance compensation between the cylinder head 17 and the fuel distributor line 4. The hold-down 10 is similar to the first embodiment according to FIG. 1 clamped between the end surface 14 of the connecting piece 6 and the shoulder 12 on the fuel injection valve 1.

In der Figur 16 ist ein fünfzehntes Ausführungsbeispiel einer erfindungemäßen Brennstoffeinspritzvorrichtung dargestellt. Diese Brennstoffeinspritzvorrichtung zeichnet sich dadurch aus, dass der Verbindungskörper 18 nur ein geschlitzter Schnappring 59 ist. Der Schnappring 59 greift in einen verjüngten Abschnitt des Zulaufstutzens 7 des Brennstoffeinspritzventils 1 ein. Im Anschlussstutzen 6 ist eine Nut 60 vorgesehen, in der der Schnappring 59 sicher und fest eingerastet ist. Zum Untergreifen des Brennstoffeinspritzventils 1 besitzt der Schnappring 59 eine konische oder gewölbte sphärische Anlagefläche 62. Der Niederhalter 10 ist ähnlich wie beim ersten Ausführungsbeispiel gemäß Figur 1 zwischen der Endfläche 14 des Anschlussstutzens 6 und der Schulter 12 am Brennstoffeinspritzventil 1 eingespannt.In the FIG. 16 a fifteenth embodiment of a erfindungemäßen fuel injection device is shown. This fuel injection device is characterized in that the connecting body 18 is only a slotted snap ring 59. The snap ring 59 engages in a tapered portion of the inlet nozzle 7 of the fuel injection valve 1 a. In the connection piece 6, a groove 60 is provided, in which the snap ring 59 is locked securely and firmly. For engaging under the fuel injection valve 1, the snap ring 59 has a conical or curved spherical bearing surface 62. The hold-down 10 is similar to the first embodiment according to FIG. 1 clamped between the end surface 14 of the connecting piece 6 and the shoulder 12 on the fuel injection valve 1.

In der Figur 17 ist ein sechzehntes Ausführungsbeispiel einer erfindungemäßen Brennstoffeinspritzvorrichtung dargestellt. Bei dem in Figur 17 gezeigten Ausführungsbeispiel ist als Verbindungskörper 18 eine topfförmige Hülse vorgesehen, die am stromabwärtigen Ende des Anschlussstutzens 6 sicher und fest angeordnet ist. Der Verbindungskörper 18 ist zweiteilig ausgeführt, d.h. er besteht aus zwei halbringförmigen Ringelementen 63. Jedes der Ringelemente 63 weist einen Mantelabschnitt 41 und einen Bodenabschnitt 42 auf, wobei der Mantelabschnitt 41 dem Bodenabschnitt 42 gegenüberliegend jeweils in einen hakenförmigen Rastabschnitt 64 übergeht. Die Rastabschnitte 64 des Verbindungskörpers 18 greifen in zwei Nuten 65 am Umfang des Anschlussstutzens 6 sicher ein. Im Bodenabschnitt 42 ist eine mittlere Öffnung 44 vorgesehen, die von einem verjüngten Bereich 45 des Brennstoffeinspritzventils 1 durchgriffen wird, wobei der verjüngte Bereich 45 am Zulaufstutzen 7 eine konisch verlaufende Flanke als Anlagefläche 66 besitzt. Die mittlere Öffnung 44 im Bodenabschnitt 42 weist einen gewölbten sphärischen Begrenzungsrand auf, der mit der Anlagefläche 66 des verjüngten Bereiches 45 korrespondiert und an ihr geringfügig entlang gleiten kann. Zum Verspannen der beiden Ringelemente 63 am Umfang des Anschlussstutzens 6 ist ein geschlossener Klammerring 67 über die beiden Ringelemente 63 geschoben. Der Niederhalter 10 ist zwischen dem Bodenabschnitt 42 des Verbindungskörpers 18 und der Schulter 12 am Brennstoffeinspritzventil 1 eingespannt.In the FIG. 17 a sixteenth embodiment of a erfindungemäßen fuel injection device is shown. At the in FIG. 17 shown embodiment is provided as a connecting body 18, a cup-shaped sleeve which is arranged securely and firmly at the downstream end of the connecting piece 6. The connecting body 18 is designed in two parts, ie it consists of two semi-annular elements 63. Each of the ring members 63 has a skirt portion 41 and a bottom portion 42, wherein the skirt portion 41 opposite the bottom portion 42 each in a hook-shaped latching portion 64 passes. The locking portions 64 of the connecting body 18 engage securely in two grooves 65 on the circumference of the connecting piece 6. In the bottom portion 42, a central opening 44 is provided, which is penetrated by a tapered portion 45 of the fuel injection valve 1, wherein the tapered portion 45 on the inlet nozzle 7 has a conical flank 66 as abutment surface. The central opening 44 in the bottom section 42 has a curved spherical boundary edge, which corresponds to the contact surface 66 of the tapered region 45 and can slide slightly therealong. For clamping the two ring elements 63 on the circumference of the connecting piece 6, a closed clamping ring 67 is pushed over the two ring elements 63. The hold-down 10 is clamped between the bottom portion 42 of the connecting body 18 and the shoulder 12 on the fuel injection valve 1.

In der Figur 18 ist ein siebzehntes Ausführungsbeispiel einer erfindungemäßen Brennstoffeinspritzvorrichtung dargestellt. Diese Brennstoffeinspritzvorrichtung zeichnet sich dadurch aus, dass ein Verbindungskörper 18 ausgebildet ist, der einerseits mit einem Haltekragen 21 das Brennstoffeinspritzventil 1 im Bereich einer Gehäuseschulter 20 untergreift und andererseits über eine nichtstoffschlüssige Verbindung, hier eine Schnapp- bzw. Rast-Verbindung mit dem Anschlussstutzen 6 verbunden ist. Der Verbindungskörper 18 ist rohrförmig mit entgegen der Strömungsrichtung sich erweiternder Öffnung ausgeführt und besitzt zum Durchgreifen des Anschlusssteckers 8 des Brennstoffeinspritzventils 1 eine Ausnehmung 19. Außerhalb dieser Ausnehmung 19 kann der Verbindungskörper 18 um 360° umlaufend ausgeführt sein. An der Gehäuseschulter 20 wird das Brennstoffeinspritzventil 1 von dem Haltekragen 21 oder mehreren Haltekragensegmenten des Verbindungskörpers 18 untergriffen, so dass das Brennstoffeinspritzventil 1 gegenüber einer radial verlaufenden Schulter 22 der Aufnahmebohrung 9 beabstandet frei hängt. Der Haltekragen 21 oder die mehreren Haltekragensegmenten des Verbindungskörpers 18, die das Brennstoffeinspritzventil 1 untergreifen, sind z.B. rechtwinklig endend ausgeführt, während die Gehäuseschulter 20 am Brennstoffeinspritzventil 1 beispielsweise konisch verläuft. An ihrem dem Anschlussstutzen 6 zugewandten Ende weist der Verbindungskörper 18 einen ringförmigen Übergreifabschnitt 69 auf, der zwei konische Begrenzungsflächen 70a, 70b besitzt. Zur sicheren Befestigung des Brennstoffeinspritzventils 1 an der Brennstoffverteilerleitung 4 über den Verbindungskörper 18 ist am Umfang des Anschlussstutzens 6 eine Nut 55 vorgesehen, in der ein offener Federring 71 eingebracht ist. Während der Montage des Verbindungskörpers 18 in stromaufwärtiger Richtung schiebt die erste Begrenzungsfläche 70a zunächst den Federring 71 in die Nut 55 hinein, bis der Übergreifabschnitt 69 über den Federring 71 hinweg geglitten ist. Im montierten Zustand des Verbindungskörpers 18 stützt sich die zweite Begrenzungsfläche 70b des Übergreifabschnitts 69 des Verbindungskörpers 18 an dem Federring 71 ab, der aufgrund seiner Federspannung geringfügig aus der Nut 55 radial nach außen wieder rutscht und den Verbindungskörper 18 am Anschlussstutzen 6 verspannt. Der Niederhalter 10 ist ähnlich wie beim ersten Ausführungsbeispiel gemäß Figur 1 zwischen der Endfläche 14 des Anschlussstutzens 6 und der Schulter 12 am Brennstoffeinspritzventil 1 eingespannt.In the FIG. 18 a seventeenth embodiment of a erfindungemäßen fuel injection device is shown. This fuel injection device is characterized in that a connecting body 18 is formed, which engages on the one hand with a retaining collar 21, the fuel injection valve 1 in the region of a housing shoulder 20 and on the other hand via a non-material connection, here a snap or latching connection with the connecting piece 6 is. The connecting body 18 is tubular with counter to the flow direction widening opening and has to reach through the connector 8 of the fuel injector 1 has a recess 19. Outside of this recess 19, the connecting body 18 may be performed by 360 ° encircling. At the housing shoulder 20, the fuel injection valve 1 is engaged by the retaining collar 21 or a plurality of retaining collar segments of the connecting body 18 so that the fuel injection valve 1 is freely suspended from a radially extending shoulder 22 of the receiving bore 9. The retaining collar 21 or the plurality of retaining collar segments of the connecting body 18, which engage under the fuel injection valve 1, for example, are executed at right angles ending, while the housing shoulder 20 on the fuel injection valve 1, for example, runs conically. At its end facing the connecting piece 6, the connecting body 18 has an annular overlapping section 69 which has two conical boundary surfaces 70a, 70b. For secure attachment of the fuel injection valve 1 to the fuel manifold 4 via the connecting body 18, a groove 55 is provided on the circumference of the connecting piece 6, in which an open spring ring 71 is introduced. During assembly of the connecting body 18 in the upstream direction, the first limiting surface 70a first pushes the spring ring 71 into the groove 55 until the overlapping section 69 has slid over the spring ring 71. In the assembled state of the connecting body 18, the second boundary surface 70b of the overreaching section 69 of the connecting body 18 is supported on the spring ring 71, which due to its spring tension slightly slips radially outwards out of the groove 55 and clamps the connecting body 18 to the connecting piece 6. The hold-down 10 is similar to the first embodiment according to FIG. 1 clamped between the end surface 14 of the connecting piece 6 and the shoulder 12 on the fuel injection valve 1.

Claims (13)

  1. Fuel injection device for fuel injection systems of internal combustion engines having at least one fuel injection valve (1), having a receiving bore (9) for the fuel injection valve (1) in a cylinder head (17), and having a fuel distributor line (4) with a connecting piece (6) into which the fuel injection valve (1) is inserted with a partial overlap, wherein a connecting body (18) is arranged such that the fuel injection valve (1) is held therein in such a way that the fuel injection valve (1) and the connecting body (18) are inserted so as to be free from contact with all of those surfaces or walls of the receiving bore (9) of the cylinder head (17) which do not run axially parallel to the fuel injection valve (1),
    characterized
    in that the connecting piece (6) has, on its downstream end, a partially annularly encircling, protruding collar (15) which either engages into an opening (23) on the connecting body (18) or engages under an annular collar (35, 69) or a detent means (52) of the connecting body (18),
    wherein the connecting body (18) is of tubular form such that there is provided therein a recess (19) through which a connecting plug (8) of the fuel injection valve (1) can extend.
  2. Fuel injection device according to Claim 1, characterized in that the connecting body (18) is attached directly to the connecting piece (6) of the fuel distributor line (4).
  3. Fuel injection device according to Claim 1 or 2, characterized in that the opening (23) for the collar (15) of the connecting piece (6) belongs, in part, to the recess (19).
  4. Fuel injection device according to one of Claims 1 to 3, characterized in that the connecting body (18) has a holding collar (21) or a plurality of holding collar segments which engage under the fuel injection valve (1).
  5. Fuel injection device according to Claim 5, characterized in that the holding collar (21) or the holding collar segments of the connecting body (18) are of rounded form towards the housing shoulder (20), whereas the housing shoulder (20) on the fuel injection valve (1) runs conically.
  6. Fuel injection device according to Claim 4, characterized in that the holding collar (21) or the holding collar segments of the connecting body (18) engage on a housing shoulder (20) of the fuel injection valve (1).
  7. Fuel injection device according to Claim 1, characterized in that the connection between the connecting body (18) and connecting piece (6) is secured by means of a lock nut (38).
  8. Fuel injection device according to Claim 1, characterized in that the connecting body (18) corresponds with a spring washer (71) mounted on the connecting piece (6).
  9. Fuel injection device according to one of the preceding claims, characterized in that the fuel distributor line (4) is fastened to the cylinder head (17) by connecting means (25).
  10. Fuel injection device according to Claim 9, characterized in that in each case at least one damping washer (26) is provided in the region of the connecting means (25).
  11. Fuel injection device according to Claim 10, characterized in that the damping washers (26) are arranged so as to be supported directly on the fuel distributor line (4) and/or so as to be supported directly on the cylinder head (17).
  12. Fuel injection valve according to one of the preceding claims, characterized in that a hold-down means (10) is braced between a shoulder (12) of the fuel injection valve (1) and an end surface (14) of the connecting piece (6).
  13. Fuel injection device according to Claim 11, characterized in that the hold-down means (10) has a base element (11) which is in the shape of a segment of a ring and from which there extends, in a bent-away fashion, an axially flexible hold-down clip (13).
EP10153017A 2005-03-03 2006-03-02 Fuel injection system Not-in-force EP2189650B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE200510009740 DE102005009740A1 (en) 2005-03-03 2005-03-03 Fuel injection device for internal combustion engine, has connecting body arranged so that valve and body are placed at surfaces of hole of cylinder head, and damping plates in connecting area of pipeline for uncoupling valve from head
DE200510020380 DE102005020380A1 (en) 2005-05-02 2005-05-02 Fuel injection device for internal combustion engine, has fuel injecting valve fastened directly to fuel distribution line by connection body, where valve and body are placed without abutment on surfaces of mounting hole in cylinder head
EP06708603A EP1859160B1 (en) 2005-03-03 2006-03-02 Fuel injection device

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP06708603.3 Division 2006-03-02
EP06708603A Division EP1859160B1 (en) 2005-03-03 2006-03-02 Fuel injection device

Publications (3)

Publication Number Publication Date
EP2189650A2 EP2189650A2 (en) 2010-05-26
EP2189650A3 EP2189650A3 (en) 2010-08-11
EP2189650B1 true EP2189650B1 (en) 2012-10-17

Family

ID=36143339

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EP10153095A Not-in-force EP2187040B1 (en) 2005-03-03 2006-03-02 Fuel injection system
EP10153017A Not-in-force EP2189650B1 (en) 2005-03-03 2006-03-02 Fuel injection system
EP06708603A Not-in-force EP1859160B1 (en) 2005-03-03 2006-03-02 Fuel injection device
EP10152996A Not-in-force EP2187035B1 (en) 2005-03-03 2006-03-02 Fuel injection system
EP10153072.3A Not-in-force EP2187039B1 (en) 2005-03-03 2006-03-02 Fuel injection system
EP10153043.4A Not-in-force EP2187036B1 (en) 2005-03-03 2006-03-02 Fuel injection system
EP10153103.6A Not-in-force EP2187041B1 (en) 2005-03-03 2006-03-02 Fuel injection system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP10153095A Not-in-force EP2187040B1 (en) 2005-03-03 2006-03-02 Fuel injection system

Family Applications After (5)

Application Number Title Priority Date Filing Date
EP06708603A Not-in-force EP1859160B1 (en) 2005-03-03 2006-03-02 Fuel injection device
EP10152996A Not-in-force EP2187035B1 (en) 2005-03-03 2006-03-02 Fuel injection system
EP10153072.3A Not-in-force EP2187039B1 (en) 2005-03-03 2006-03-02 Fuel injection system
EP10153043.4A Not-in-force EP2187036B1 (en) 2005-03-03 2006-03-02 Fuel injection system
EP10153103.6A Not-in-force EP2187041B1 (en) 2005-03-03 2006-03-02 Fuel injection system

Country Status (6)

Country Link
US (1) US7765984B2 (en)
EP (7) EP2187040B1 (en)
JP (4) JP4809375B2 (en)
AT (1) ATE457422T1 (en)
DE (1) DE502006006106D1 (en)
WO (1) WO2006092427A1 (en)

Families Citing this family (66)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6446494A (en) * 1987-08-12 1989-02-20 Yasuo Ueno Ship
DE102006056704A1 (en) * 2006-11-30 2008-06-05 Robert Bosch Gmbh Fuel injector and fuel injection system
US7406946B1 (en) 2007-04-02 2008-08-05 Hitachi, Ltd. Method and apparatus for attenuating fuel pump noise in a direct injection internal combustion chamber
EP2093412B1 (en) * 2008-02-19 2011-01-19 Continental Automotive GmbH Coupling device
JP5125909B2 (en) * 2008-09-05 2013-01-23 トヨタ自動車株式会社 Fuel injection device for internal combustion engine
US7793639B2 (en) * 2008-09-25 2010-09-14 Hitachi, Ltd. Apparatus for reducing the transmission for noise from the fuel rail in a direct injection engine
US20100096533A1 (en) * 2008-10-22 2010-04-22 Denso International America, Inc. Fuel pump module snap-in support rod attachment
EP2189633B1 (en) * 2008-11-22 2011-11-02 Grundfos Management A/S Device to discharge urine solution in a waste gas line
DE102008054591A1 (en) * 2008-12-12 2010-06-17 Robert Bosch Gmbh Decoupling element for a fuel injection device
JP5126057B2 (en) * 2008-12-26 2013-01-23 トヨタ自動車株式会社 Fuel injection device for internal combustion engine
EP2208883B1 (en) * 2009-01-19 2015-07-22 Continental Automotive GmbH Coupling device
EP2241746A1 (en) * 2009-04-14 2010-10-20 Continental Automotive GmbH Coupling device
EP2241745B1 (en) * 2009-04-15 2012-10-24 Continental Automotive GmbH Coupling device
EP2246555B1 (en) * 2009-04-20 2012-07-18 Continental Automotive GmbH Coupling device and fuel injection arrangement
US8069842B2 (en) * 2009-07-02 2011-12-06 Robert Bosch Gmbh Injector mounting assembly
EP2372140B1 (en) * 2010-03-25 2012-12-12 Continental Automotive GmbH Coupling device
WO2011121728A1 (en) * 2010-03-30 2011-10-06 トヨタ自動車 株式会社 Vibration insulator for fuel injection valve, and support structure for fuel injection valve
DE102010018615A1 (en) * 2010-04-28 2011-11-03 Audi Ag Fuel supply device and method for producing such a fuel supply device
WO2012014326A1 (en) 2010-07-30 2012-02-02 トヨタ自動車 株式会社 Vibration damping insulator for fuel injection valve
DE112011103126T5 (en) * 2010-10-20 2013-09-12 Illinois Tool Works Inc. Fuel injector mounting arrangement
DE102010064121A1 (en) * 2010-12-23 2012-06-28 Robert Bosch Gmbh fuel feeder
US9109563B2 (en) * 2011-03-31 2015-08-18 Denso International America, Inc. Cradled fuel injector mount assembly
DE102011075057A1 (en) * 2011-05-02 2012-11-08 Robert Bosch Gmbh Fuel distributor and system with a fuel injector
US10539105B2 (en) * 2011-09-08 2020-01-21 Continental Automotive Gmbh Fuel injector and fuel injector assembly
JP5682787B2 (en) * 2011-09-26 2015-03-11 株式会社デンソー Fuel injection device
DE102011089295A1 (en) * 2011-12-20 2013-06-20 Robert Bosch Gmbh Decoupling element for a fuel injection device
CN102536570A (en) * 2012-01-10 2012-07-04 中国兵器工业集团第七0研究所 Compaction device for common rail fuel injector of horizontal dual-opposed diesel engine
JP5822272B2 (en) * 2012-02-27 2015-11-24 株式会社ケーヒン Support structure for fuel injection valve
JP5822271B2 (en) 2012-02-27 2015-11-24 株式会社ケーヒン Support structure for fuel injection valve
JP5891855B2 (en) * 2012-03-06 2016-03-23 株式会社デンソー Fuel injection valve
DE102012206241A1 (en) * 2012-04-17 2013-10-17 Robert Bosch Gmbh Device for holding down a valve for metering fuel
DE102012206896A1 (en) * 2012-04-26 2013-10-31 Robert Bosch Gmbh Arrangement with a fuel distributor and a plurality of fuel injection valves
CN104271937B (en) * 2012-05-08 2016-11-23 大陆汽车有限公司 Coupling arrangement and fuel injector assembly
DE102012209421A1 (en) * 2012-06-04 2013-12-05 Robert Bosch Gmbh Device for metering fuel
JP5955198B2 (en) 2012-11-02 2016-07-20 株式会社ケーヒン Support structure for direct injection fuel injection valve
JP6074794B2 (en) 2012-11-05 2017-02-08 株式会社ケーヒン Support structure for fuel injection valve
JP6074793B2 (en) 2012-11-05 2017-02-08 株式会社ケーヒン Support structure for fuel injection valve
CN103104392B (en) * 2012-12-08 2014-12-03 宁波市鄞州云帆工程咨询有限公司 Oil atomizer base with reverse locking function
DE102013200728A1 (en) * 2013-01-18 2014-07-24 Robert Bosch Gmbh Fuel injection system with a fuel-carrying component, a fuel injection valve and a connecting element
DE102013200993A1 (en) * 2013-01-22 2014-07-24 Robert Bosch Gmbh Fuel injection system with a fuel-carrying component, a fuel injection valve and a suspension
DE102013200982A1 (en) * 2013-01-22 2014-07-24 Robert Bosch Gmbh Fuel injection system with a fuel-carrying component, a fuel injection valve and a suspension
DE102013200909A1 (en) * 2013-01-22 2014-07-24 Robert Bosch Gmbh Fuel injection system with a fuel-carrying component, a fuel injection valve and a connecting element
DE102013207368A1 (en) * 2013-04-23 2014-10-23 Robert Bosch Gmbh Holder for mounting a fuel distributor to an internal combustion engine and system with such a holder
EP2813699B1 (en) * 2013-06-14 2018-09-05 FPT Motorenforschung AG Fuel piping arrangement in common rail type fuel supply systems
EP2824312B1 (en) 2013-07-10 2017-06-28 Continental Automotive GmbH Fuel injection assembly for a combustion engine
EP2832986B1 (en) * 2013-07-31 2016-05-25 Continental Automotive GmbH Fluid injection assembly for a combustion engine
DE102013217515A1 (en) * 2013-09-03 2015-03-05 Robert Bosch Gmbh Arrangement with a fuel feeder and several holders
CN106062356B (en) * 2014-03-14 2022-06-21 大陆汽车有限公司 Fuel injection assembly
DE102014215472B4 (en) * 2014-08-05 2023-07-27 Robert Bosch Gmbh Arrangement for connecting a fuel injection valve to a fuel-carrying component and fuel injection system
KR101637103B1 (en) * 2014-12-26 2016-07-06 주식회사 현대케피코 Fuel injector coupling device of fuel rail
DE102015001614A1 (en) * 2015-02-07 2016-08-11 Neander Motors Ag Device for fixing at least one fuel injection nozzle
US9567961B2 (en) * 2015-03-16 2017-02-14 Delphi Technologies, Inc. Arrangement for retaining a fuel injector to a fuel rail socket
JP6380185B2 (en) * 2015-03-23 2018-08-29 株式会社デンソー Fuel injection valve clip and fuel injection valve unit
JP2016186338A (en) 2015-03-27 2016-10-27 株式会社ケーヒン In-tank valve
JP6559993B2 (en) * 2015-03-27 2019-08-14 株式会社ケーヒン In-tank valve
EP3153698B8 (en) * 2015-10-07 2019-12-18 CPT Group GmbH Fuel rail assembly
JP6560631B2 (en) 2016-02-17 2019-08-14 ファナック株式会社 Motor control device, motor control method, and motor control program
DE102016204025B4 (en) * 2016-03-11 2021-05-27 Hirschvogel Umformtechnik Gmbh Internal pressure loaded component (rail) as well as process for its production
FR3049004B1 (en) * 2016-03-15 2018-03-16 Peugeot Citroen Automobiles Sa DEVICE FOR LOCKING LUBRICATION TUBES ON A TURBOCHARGER
KR101739694B1 (en) 2016-06-13 2017-05-24 주식회사 현대케피코 Injector clip
DE102017214980A1 (en) * 2017-08-28 2019-02-28 Robert Bosch Gmbh Injection valve arrangement
DE102017218008A1 (en) * 2017-10-10 2019-04-11 Robert Bosch Gmbh Decoupling element for a fuel injection device
JP2020045854A (en) * 2018-09-20 2020-03-26 株式会社デンソー Fuel injection device
CN113685297B (en) * 2021-07-27 2022-11-08 东风汽车集团股份有限公司 Fuel injector mounting device
CN118451247A (en) * 2021-10-19 2024-08-06 斯坦蒂内运营公司 Axisymmetric injector compression load ring
DE102022211054A1 (en) * 2022-10-19 2024-04-25 Robert Bosch Gesellschaft mit beschränkter Haftung Fuel injector arrangement for mounting a fuel injector in an internal combustion engine

Family Cites Families (94)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2653674A1 (en) * 1976-11-26 1978-06-01 Bosch Gmbh Robert INJECTION VALVE FOR A COMBUSTION ENGINE
DE2829057A1 (en) * 1978-07-01 1980-01-10 Bosch Gmbh Robert FUEL INJECTION SYSTEM
US4240774A (en) 1979-02-15 1980-12-23 General Electric Company Hermetically sealed compressor suction tube and method of assembly
DE2908095C2 (en) * 1979-03-02 1984-02-16 Robert Bosch Gmbh, 7000 Stuttgart Fuel injection system for internal combustion engines
DE2926490A1 (en) * 1979-06-30 1981-02-05 Bosch Gmbh Robert FUEL INJECTION SYSTEM
JPS5877163A (en) * 1981-11-04 1983-05-10 Honda Motor Co Ltd Fufl nozzle fixing device
JPS5870455U (en) * 1981-11-04 1983-05-13 本田技研工業株式会社 Fuel nozzle mounting device
JPS59147863A (en) 1983-02-09 1984-08-24 Honda Motor Co Ltd Installation structure of fuel injection valve
JPS6045868U (en) * 1983-09-05 1985-03-30 アイシン精機株式会社 fuel injector mounting device
US4991556A (en) * 1988-09-28 1991-02-12 Siemens-Bendix Automotive Electronics L.P. Automotive fuel rail assemblies with integral means for mounting fuel regulator
JP2797353B2 (en) * 1988-12-19 1998-09-17 株式会社デンソー Fuel branch pipe
DE3904479A1 (en) * 1989-02-15 1990-08-16 Bosch Gmbh Robert CONNECTING ELEMENT
DE3907764A1 (en) * 1989-03-10 1990-09-13 Bosch Gmbh Robert FUEL DISTRIBUTOR FOR FUEL INJECTION SYSTEMS OF INTERNAL COMBUSTION ENGINES
DE3918410A1 (en) * 1989-06-06 1990-12-13 Bosch Gmbh Robert FUEL INJECTION DEVICE FOR INTERNAL COMBUSTION ENGINES
US4984548A (en) * 1989-11-20 1991-01-15 Sharon Manufacturing Company Fuel injector retainer clip
US5035224A (en) * 1990-07-06 1991-07-30 Siemens Automotive L.P. Clip retention of a split-stream fuel injector to a fuel rail cup including circumferential locator
JP2530850Y2 (en) * 1990-08-31 1997-04-02 スズキ株式会社 Fuel injection device for internal combustion engine
JPH087095Y2 (en) * 1990-11-13 1996-02-28 三菱電機株式会社 Fuel supply device for internal combustion engine
US5074269A (en) * 1991-04-29 1991-12-24 Chrysler Corporation Anti-rotation fuel injector clip
DE4413914A1 (en) * 1994-04-21 1995-10-26 Bosch Gmbh Robert Fuel injector
JPH084623A (en) * 1994-06-15 1996-01-09 Usui Internatl Ind Co Ltd Fuel delivery valve
US5501195A (en) * 1994-09-16 1996-03-26 Siemens Automotive Corporation Retainer arrangement for a bottom feed fuel injector
JP3303627B2 (en) * 1995-10-04 2002-07-22 三菱自動車エンジニアリング株式会社 Injector clamping device
US6307693B1 (en) * 1995-10-13 2001-10-23 Sony Corporation Integration of filter into read/write preamplifier integrated circuit
JP3329998B2 (en) * 1995-10-17 2002-09-30 三菱電機株式会社 In-cylinder fuel injection valve
DE19639585A1 (en) * 1996-09-26 1998-04-02 Bosch Gmbh Robert Fuel distributor
JPH10141171A (en) * 1996-11-15 1998-05-26 Zexel Corp Fuel injection valve attaching structure
JP3301354B2 (en) * 1996-12-24 2002-07-15 トヨタ自動車株式会社 Fuel injection device
JPH10184927A (en) * 1996-12-27 1998-07-14 Mitsubishi Automob Eng Co Ltd Seal device
JPH10318080A (en) * 1997-05-15 1998-12-02 Aisan Ind Co Ltd Fuel distribution pipe
US5870995A (en) * 1997-06-10 1999-02-16 Caterpillar Inc. Space saving high pressure fluid supply clamp for a fuel injector
DE19735665A1 (en) * 1997-06-25 1999-01-07 Bosch Gmbh Robert Fuel injection system
JPH1182231A (en) * 1997-09-09 1999-03-26 Sanou Kogyo Kk Fuel injection nozzle mounting device
JPH11159415A (en) * 1997-11-28 1999-06-15 Mitsubishi Motors Corp Seal structure of fuel injection pipe installing part
DE19756102A1 (en) * 1997-12-17 1999-06-24 Bosch Gmbh Robert Mounting device for mounting fuel injectors
JP3845197B2 (en) * 1998-03-18 2006-11-15 株式会社ケーヒン Holding structure for fuel distribution pipe of electromagnetic fuel injection valve
JP3811288B2 (en) * 1998-03-31 2006-08-16 株式会社ケーヒン Holding structure for fuel distribution pipe of electromagnetic fuel injection valve
US6053149A (en) * 1998-05-28 2000-04-25 Siemens Automotive Corporation Fuel injector clip retention arrangement
JP3991452B2 (en) * 1998-06-19 2007-10-17 三菱自動車工業株式会社 Injector mounting structure
JP2000018125A (en) * 1998-07-01 2000-01-18 Mitsubishi Electric Corp Fuel injection valve for cylinder injection
JP2000018127A (en) * 1998-07-07 2000-01-18 Hitachi Ltd Injector and holder thereof
US6019089A (en) * 1998-10-14 2000-02-01 Ford Motor Company Arrangement for orienting a fuel injector to a fuel manifold cup
DE19853090A1 (en) * 1998-11-18 2000-05-25 Bosch Gmbh Robert Fuel injection system
US5970953A (en) * 1999-01-12 1999-10-26 Siemens Automotive Corporation High pressure injector clip
US6325049B1 (en) * 1999-06-23 2001-12-04 Siemens Automotive Corporation Fuel injector with orientation feature for orienting injector with respect to the manifold or head
EP1079100B1 (en) * 1999-08-27 2005-12-21 Delphi Technologies, Inc. Connector arrangement
AU7575000A (en) * 1999-09-10 2001-04-10 International Engine Intellectual Property Company, Llc Actuating fluid delivery system for a fuel injector
JP2001090629A (en) * 1999-09-22 2001-04-03 Nippon Soken Inc Fuel supply system for cylinder direct injection type internal combustion engine
JP2001090631A (en) * 1999-09-24 2001-04-03 Otics Corp Fuel distribution pipe
JP2001090630A (en) * 1999-09-27 2001-04-03 Mazda Motor Corp Fuel supply device for cylinder injection type engine
DE19949080B4 (en) * 1999-10-12 2005-11-17 Dr.Ing.H.C. F. Porsche Ag Holder for an injection nozzle
US6467457B1 (en) * 1999-10-25 2002-10-22 International Engine Intellectual Property Company, L.L.C. Injector actuating fluid check and methods
JP2001140729A (en) * 1999-11-17 2001-05-22 Yanmar Diesel Engine Co Ltd Fuel injection valve mounting structure of engine
JP3828701B2 (en) * 1999-12-29 2006-10-04 株式会社ケーヒン Mounting structure of fuel injection valve to fuel distribution pipe
JP2001221127A (en) * 2000-02-09 2001-08-17 Nissan Motor Co Ltd Fuel injection system for internal combustion engine
JP2003528254A (en) * 2000-03-21 2003-09-24 シーメンス アクチェンゲゼルシャフト Fuel injector assembly for alignably mounting a fuel injector to a fuel rail
US6276339B1 (en) * 2000-05-02 2001-08-21 Delphi Technologies, Inc. Fuel injector spring clip assembly
JP2002039472A (en) * 2000-07-21 2002-02-06 Chiyoda Seisakusho:Kk Pipe fitting clamp and pipe fitting equipped with clamp
JP2002039034A (en) 2000-07-28 2002-02-06 Denso Corp Supporting construction of electromagnetic fuel injection valve
US6457456B1 (en) * 2000-07-28 2002-10-01 Siemens Automotive Corporation Clip for injector to fuel supply assembly
JP2002070687A (en) * 2000-08-31 2002-03-08 Otics Corp Delivery pipe
US6604510B2 (en) * 2000-10-04 2003-08-12 Siemens Automotive Corporation Fuel system including a fuel injector directly mounted to a fuel rail
US20020071718A1 (en) * 2000-10-17 2002-06-13 Garry Marty Retainer clip
US6481420B2 (en) * 2001-01-30 2002-11-19 Visteon Global Technologies, Inc. Method and apparatus for maintaining the alignment of a fuel injector
DE10108195A1 (en) * 2001-02-21 2002-08-22 Bosch Gmbh Robert Fuel injector
DE10108203A1 (en) * 2001-02-21 2002-08-29 Bosch Gmbh Robert Mounting bracket and method for mounting a fuel injector
DE10108193A1 (en) 2001-02-21 2002-08-29 Bosch Gmbh Robert fastening device
DE10108467A1 (en) * 2001-02-22 2002-09-05 Bosch Gmbh Robert fastening device
DE10109408A1 (en) * 2001-02-28 2002-09-05 Bosch Gmbh Robert fastening device
JP2002357170A (en) 2001-03-27 2002-12-13 Denso Corp Fuel supply device
JP2002303228A (en) * 2001-04-05 2002-10-18 Denso Corp Fuel injection device
JP4342121B2 (en) * 2001-05-31 2009-10-14 トヨタ自動車株式会社 Outer diameter correction method and outer diameter correction jig of combustion gas seal for injector
US6637776B2 (en) * 2001-06-13 2003-10-28 Cummins Inc. Fluid manifold connector and fluid manifold assembly
DE10140797A1 (en) * 2001-08-20 2003-07-31 Bosch Gmbh Robert Compensation element for a fuel injector
DE10152421A1 (en) * 2001-10-24 2003-06-18 Bosch Gmbh Robert fastening device
JP2003148218A (en) * 2001-11-13 2003-05-21 Nissan Motor Co Ltd Fuel injection control apparatus for multicylinder engine
JP3969105B2 (en) 2002-02-04 2007-09-05 日産自動車株式会社 Fuel injection valve fixing structure
JP3997512B2 (en) * 2002-04-01 2007-10-24 臼井国際産業株式会社 Fuel delivery pipe
JP2003328900A (en) * 2002-05-15 2003-11-19 Mitsubishi Electric Corp Fuel injection device
JP2003343785A (en) * 2002-05-31 2003-12-03 Denso Corp Joint structure for connecting fuel pipe part with fuel injection device
JP3922547B2 (en) * 2002-06-28 2007-05-30 株式会社デンソー Fuel supply apparatus and assembly method thereof
US6640784B1 (en) * 2002-10-09 2003-11-04 Robert Bosch Corporation Spark ignition direct injection system
US6895939B2 (en) * 2002-12-20 2005-05-24 Caterpillar Inc Fuel injector clamping assembly
JP3900087B2 (en) 2003-02-17 2007-04-04 三菱自動車工業株式会社 Injector support structure
JP2004245169A (en) 2003-02-17 2004-09-02 Mitsubishi Motors Corp Supporting structure of injector
JP4101141B2 (en) * 2003-03-03 2008-06-18 トヨタ自動車株式会社 Fuel injection device for internal combustion engine
JP4025240B2 (en) 2003-05-28 2007-12-19 日本電信電話株式会社 Semiconductor integrated circuit device
JP4056449B2 (en) * 2003-09-09 2008-03-05 本田技研工業株式会社 Side feed type fuel injection valve mounting structure
WO2005083262A1 (en) * 2004-02-26 2005-09-09 Robert Bosch Gmbh Support element
JP4099668B2 (en) * 2004-03-29 2008-06-11 株式会社デンソー Attachment structure of fuel injection valve and fixing member used therefor
DE202004009755U1 (en) * 2004-06-21 2004-09-16 Klann-Spezial-Werkzeugbau-Gmbh Device for pulling out a nozzle stick
JP4634765B2 (en) * 2004-09-16 2011-02-16 日産自動車株式会社 Fuel injection valve mounting structure
US7334571B1 (en) * 2006-08-31 2008-02-26 Gm Global Technology Operations, Inc. Isolation system for high pressure spark ignition direct injection fuel delivery components
US7406946B1 (en) * 2007-04-02 2008-08-05 Hitachi, Ltd. Method and apparatus for attenuating fuel pump noise in a direct injection internal combustion chamber

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