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EP0874153A3 - Accumulator fuel injection system for a multicylinder engine with electromagnetically controlled fuel injectors - Google Patents

Accumulator fuel injection system for a multicylinder engine with electromagnetically controlled fuel injectors Download PDF

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Publication number
EP0874153A3
EP0874153A3 EP98105360A EP98105360A EP0874153A3 EP 0874153 A3 EP0874153 A3 EP 0874153A3 EP 98105360 A EP98105360 A EP 98105360A EP 98105360 A EP98105360 A EP 98105360A EP 0874153 A3 EP0874153 A3 EP 0874153A3
Authority
EP
European Patent Office
Prior art keywords
nozzle needle
spring
chamber
fuel injection
valve
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.)
Withdrawn
Application number
EP98105360A
Other languages
German (de)
French (fr)
Other versions
EP0874153A2 (en
Inventor
Ulrich Dr. Augustin
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler AG
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
Application filed by DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP0874153A2 publication Critical patent/EP0874153A2/en
Publication of EP0874153A3 publication Critical patent/EP0874153A3/en
Withdrawn legal-status Critical Current

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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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0003—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure
    • F02M63/0005—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure using valves actuated by fluid pressure
    • 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
    • F02M61/20—Closing valves mechanically, e.g. arrangements of springs or weights or permanent magnets; Damping of valve lift
    • F02M61/205—Means specially adapted for varying the spring tension or assisting the spring force to close the injection-valve, e.g. with damping of valve lift
    • 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
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
    • F02M63/0205—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively for cutting-out pumps or injectors in case of abnormal operation of the engine or the injection apparatus, e.g. over-speed, break-down of fuel pumps or injectors ; for cutting-out pumps for stopping the engine

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

Die Erfindung betrifft ein Speichereinspritzsystem für eine mehrzylindrige Brennkraftmaschine mit magnetventilgesteuerten direkteinspritzenden Kraftstoffeinspritzventilen (1), mit einer in jedem Ventilgehäuse zu einer federbelasteten Düsennadel (5) führenden und durch einen Steuerkolben (3) mit Ventilfunktion absperrbaren Zuführleitung (8), mit einer in einem Federraum (14) sich abstützenden und die Düsennadel (5) auf ihren Nadelsitz (16) drückenden Düsennadelfeder (15), ferner mit einem auf der Rückseite des unter Systemdruck stehenden Steuerkolbens angeordneten Steuerraum (10) sowie einem mit diesem zusammenwirkenden Magnetventil (2), durch das der Steuerraum mit einer Entlastungsleitung verbindbar und gleichzeitig die Absperrung der zur Düsennadel (5) führenden Zuführleitung (8) aufhebbar ist.
Die federbelastete Düsennadel (5) und der Steuerkolben (3) sind hierbei räumlich voneinander getrennt, wobei sich an den Federraum (14) ein durchmessermäßig kleinerer Druckraum (18) anschließt, in dem ein den Druckraum (18) von dem Federraum (14) trennender und bei einer Funktionsstörung des Kraftstoffeinspritzventiles auf die Düsennadel (5) in Schließrichtung einwirkender systemdruckbeaufschlagter Kolben (19) längsverschiebbar geführt ist.

Figure 00000001
The invention relates to a storage injection system for a multi-cylinder internal combustion engine with solenoid valve-controlled direct injection fuel injection valves (1), with a feed line (8) leading in each valve housing to a spring-loaded nozzle needle (5) and lockable by a control piston (3) with a valve function, with a supply line in a spring chamber (14) which are supported and press the nozzle needle (5) onto their needle seat (16), the nozzle needle spring (15), furthermore with a control chamber (10) arranged on the back of the control piston under system pressure and with a solenoid valve (2) which interacts with it that the control chamber can be connected to a relief line and, at the same time, the shut-off of the feed line (8) leading to the nozzle needle (5) can be lifted.
The spring-loaded nozzle needle (5) and the control piston (3) are spatially separated from one another, with the spring chamber (14) being followed by a smaller-diameter pressure chamber (18) in which a pressure chamber (18) separates the spring chamber (14) and in the event of a malfunction of the fuel injection valve, the system pressure-loaded piston (19) acting on the nozzle needle (5) in the closing direction is guided to be longitudinally displaceable.
Figure 00000001
EP98105360A 1997-04-25 1998-03-25 Accumulator fuel injection system for a multicylinder engine with electromagnetically controlled fuel injectors Withdrawn EP0874153A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19717419 1997-04-25
DE19717419A DE19717419C1 (en) 1997-04-25 1997-04-25 Injector valve for internal combustion engine of vehicle

Publications (2)

Publication Number Publication Date
EP0874153A2 EP0874153A2 (en) 1998-10-28
EP0874153A3 true EP0874153A3 (en) 2000-11-02

Family

ID=7827681

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98105360A Withdrawn EP0874153A3 (en) 1997-04-25 1998-03-25 Accumulator fuel injection system for a multicylinder engine with electromagnetically controlled fuel injectors

Country Status (3)

Country Link
US (1) US5988533A (en)
EP (1) EP0874153A3 (en)
DE (1) DE19717419C1 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0008598D0 (en) * 2000-04-07 2000-05-31 Delphi Tech Inc Fuel system
FI114502B (en) * 2001-05-14 2004-10-29 Waertsilae Finland Oy Fuel Injection Arrangement
KR101162883B1 (en) 2010-12-28 2012-07-05 현대중공업 주식회사 Electronic control fuel injection valve
KR101211331B1 (en) 2010-12-28 2012-12-11 현대중공업 주식회사 Electronic control fuel injection valve
KR101222411B1 (en) 2010-12-28 2013-01-14 현대중공업 주식회사 Electronic control fuel injection valve
WO2012091367A2 (en) * 2010-12-28 2012-07-05 현대중공업 주식회사 Electronically controlled fuel injection valve
WO2012091393A2 (en) * 2010-12-28 2012-07-05 현대중공업 주식회사 Electronically controlled fuel injection valve
KR101165541B1 (en) 2010-12-28 2012-07-16 현대중공업 주식회사 Electronic control fuel injection valve

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2088948A (en) * 1980-12-09 1982-06-16 Vysoke Uceni Tech Brne Fuel Injection Pump and and Fuel Injector Combination
GB2097858A (en) * 1981-05-05 1982-11-10 Sulzer Ag A fuel injector for an internal combustion engine
US4467757A (en) * 1981-03-26 1984-08-28 Renault Vehicules Industriels Injector system for an internal combustion engine
US5109822A (en) * 1989-01-11 1992-05-05 Martin Tiby M High pressure electronic common-rail fuel injection system for diesel engines
US5526791A (en) * 1995-06-07 1996-06-18 Diesel Technology Company High-pressure electromagnetic fuel injector
DE19612738A1 (en) * 1995-04-05 1996-10-10 Avl Verbrennungskraft Messtech Fuel injection system for IC engine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH447714A (en) * 1967-03-22 1967-11-30 Huber Robert Safety device on electromagnetic injection valves of internal combustion engines
JPS61187567A (en) * 1985-02-15 1986-08-21 Kawasaki Heavy Ind Ltd Gas injection valve

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2088948A (en) * 1980-12-09 1982-06-16 Vysoke Uceni Tech Brne Fuel Injection Pump and and Fuel Injector Combination
US4467757A (en) * 1981-03-26 1984-08-28 Renault Vehicules Industriels Injector system for an internal combustion engine
GB2097858A (en) * 1981-05-05 1982-11-10 Sulzer Ag A fuel injector for an internal combustion engine
US5109822A (en) * 1989-01-11 1992-05-05 Martin Tiby M High pressure electronic common-rail fuel injection system for diesel engines
DE19612738A1 (en) * 1995-04-05 1996-10-10 Avl Verbrennungskraft Messtech Fuel injection system for IC engine
US5526791A (en) * 1995-06-07 1996-06-18 Diesel Technology Company High-pressure electromagnetic fuel injector

Also Published As

Publication number Publication date
US5988533A (en) 1999-11-23
DE19717419C1 (en) 1998-07-30
EP0874153A2 (en) 1998-10-28

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