CN1818368B - Fuel supply device with a pressure accumulator tube closed by accumulator cover - Google Patents
Fuel supply device with a pressure accumulator tube closed by accumulator cover Download PDFInfo
- Publication number
- CN1818368B CN1818368B CN2005101285273A CN200510128527A CN1818368B CN 1818368 B CN1818368 B CN 1818368B CN 2005101285273 A CN2005101285273 A CN 2005101285273A CN 200510128527 A CN200510128527 A CN 200510128527A CN 1818368 B CN1818368 B CN 1818368B
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- CN
- China
- Prior art keywords
- accumulator
- control unit
- supply device
- seal element
- pressure
- 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.)
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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
- 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
- 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
-
- 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
-
- 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
- F02M63/0012—Valves
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
-
- 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
- F02M63/0012—Valves
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/0043—Two-way valves
-
- 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
- F02M63/0012—Valves
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/0045—Three-way valves
-
- 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
- F02M2200/40—Fuel-injection apparatus with fuel accumulators, e.g. a fuel injector having an integrated fuel accumulator
-
- 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
- F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention relates to a fuel supply device in the form of a common rail injection system, which comprises at least one accumulating chamber in an accumulator unit, which can be sealed by at least one end surface by an accumulator cover, wherein all functional units are integrated in the accumulator cover in consideration of the supply and the guide of fuel. In order to be accessible to each functional unit and keep the advantages that the attenuation of the amplitude pressure applied on the functional units of the accumulator cover, specifically a two-position three-port valve and a pressure pipe, the invention provides that the accumulator cover consists of two modules in a form of a sealing element and a control unit, so that the sealing element is hermetically connected with the accumulator unit, and the control unit can be located optionally in the pressure pipe between the sealing element and a fuel injector for supplying fuel.
Description
Technical field
The present invention relates to a kind of fuel oil supply device of common-rail injection system form, it is used for through the oil sprayer fuel feeding of a pressure tube to the cylinder of internal-combustion engine, described fuel oil supply device has at least one pressure accumulating chamber in an accumulator package, accumulator package can close by means of an accumulator cap seal at an end face at least, wherein, consider fuel delivery and guiding, all functional units are integrated in the accumulator lid.
Background technique
By for example known a kind of such fuel oil supply device of DE 101 57 135 A1, it has following feature, promptly this fuel oil supply device is used for through the oil sprayer fuel feeding of pressure tube to the cylinder of internal-combustion engine, described fuel oil supply device has at least one pressure accumulating chamber in an accumulator package, and this accumulator package can close by means of an accumulator cap seal on an end face at least.
Speak of at this, in the large-sized diesel internal-combustion engine, for all cylinders along engine shaft, the length of necessary accumulator package owing to consider constant pressure accumulation, it is problematic using a common-rail injection system.Therefore accumulator package separate by at least two, be achieved by means of connecting tube accumulator package connected to one another, wherein, accumulator package can be connected at least two oil sprayers respectively and can load with high-pressure service pump.Can significantly be reduced on the existing engine type that has a common-rail injection system and replenish equipment by at two end faces accumulator lid being set respectively, consider fuel delivery and guiding, all functional units are integrated in the described end face.
As mentioned above, all functional element for example flow-limiting valve are positioned at accumulator and cover, make that a modular structure can simple realization and improve safety in operation in addition, because thereby accumulator package and whole accumulator package are avoided passing the external force of coming by fixed mechanism and hydraulic joint, described fixed mechanism and hydraulic joint hold by the accumulator lid of modular design.
Fuel oil enters such accumulator lid from corresponding accumulator package through a Flow restrictor, and this accumulator lid comprises a plurality of functional units.Therefore for example can control oil spout, the direct switch of described two position three-way valve or handle by the two position two-way valve of an Electromagnetic Control indirectly by a two position three-way valve.Fuel oil known from two position three-way valve to pressure tube joint and by this pressure tube to corresponding oil sprayer, oil sprayer for example is made of the needle-valve of a routine.
Such as has been described, such accumulator lid comprises at least one two position three-way valve (may comprise that a two position two-way valve is used to control this two position three-way valve), flow-limiting valve, all hydraulic joint, be used for whole accumulator element is remained on the retaining mechanism on the internal-combustion engine and the fixed mechanism and the sealing mechanism of tubular pressure accumulation body.
By spring-loaded oil sprayer and the favourable combination that is arranged on the two position three-way valve in the accumulator lid, obviously simplify the equipment of the available engine type that has common-rail injection system; Be directly installed on by accumulator lid and avoid pressure surge on the accumulator package, in the functional unit of traditional common-rail injection system especially two position three-way valve, occur described pressure surge when finishing spraying especially.
Yet especially when the accumulator lid of complex structure, produce certain risk of the wearing and tearing of some members.
In this case, must remove or change whole at least accumulator lid, related in some cases whole accumulator package.
Separate the high pressure sealing face between accumulator package and accumulator lid when changing the accumulator lid, this need carry out leak test or under cover packing less risk again when safeguarding.Generally, to disassemble the functional unit that is in so far the accumulator lid of high pressure in connecting be bothersome relatively in assembling.
Summary of the invention
Therefore task of the present invention provides a kind of fuel oil supply device of common-rail injection system form, it is used for through the oil sprayer fuel feeding of pressure tube to the cylinder of internal-combustion engine, described fuel oil supply device has at least one pressure accumulating chamber in an accumulator package, this accumulator package can close by means of an accumulator cap seal on an end face at least, though wherein keep make act on the accumulator lid functional unit, the advantage of the pressure amplitude decay on two position three-way valve and the pressure tube especially, get rid of the aforementioned disadvantages that this accumulator covers.
By the present invention, this task solves by following feature, be that described accumulator lid two-piece type ground is made of the module of a seal element and the module of a control unit, make seal element and accumulator package be tightly connected securely and control unit can be positioned at seal element arbitrarily about pressure tube and need between the oil sprayer of fuel feeding, and consider fuel delivery and guiding, all functional units are integrated in the control unit.
Now constitute by two modules with a seal element and a control unit form by accumulator being covered two-piece type ground, make seal element and accumulator package be tightly connected and control unit can be positioned at seal element arbitrarily about pressure tube and need between the oil sprayer of fuel feeding, that is to say, by the control unit that comprises all functions unit is separated and apart by these two modules with the structure of the seal element of accumulator lid, be that control unit is positioned at the effect that obtains the front between accumulator package and the oil sprayer, just keep the foregoing decay of the pressure amplitude when spraying end especially, and get rid of foregoing counter productive.
Especially obviously improve the accessibility of control unit by the apart of control unit and seal element, made its assembling in high pressure connects/disassemble very simple.
At last also because following scheme realizes the utilization best of operational structure space, promptly stipulated differently mounting point, just control unit is located in prespecified range, make and determine that when the diameter of pressure tube is about 7mm the apart of pressure elements and control unit is of a size of 0mm to 2000mm that control unit can be on the high-pressure accumulator unit directly be connected with seal element or can be integrated in the pressure-accumulating tube between high-pressure accumulator unit and the oil sprayer or directly be integrated on the oil sprayer or even be integrated in the oil sprayer.
When changing the functional unit of control unit or control unit, the sealing surface of seal element with the high-pressure accumulator unit of attaching troops to a unit do not separated all the time, make that packing less risk is minimum.
The size of the apart by the seal element that indicates above and accumulator lid, separating under the extreme case of 2000mm, also can keep and make the especially advantage of the decay of the pressure amplitude in two position three-way valve and pressure tube, because determine at pressure tube under the situation of diameter, control unit is always enough closely on seal element.
In addition, the possible best hydraulic pressure of fuel oil supply device is coordinated and can be made injection process formation, multichannel injection etc. become possibility by realizing before or after the hydraulic volume that is serially connected in pressure tube.
This nature has different positive influences to internal-combustion engine, for example soft burning, improves its roadability, lower oil consumption and reduces effulent.
Reach the member manufacturing of optimization separately in addition, it comprises high-pressure accumulator unit, pressure tube, seal element and control unit and oil sprayer.Fabrication scheme improves and for the sort of design, does not need to disassemble pressure tube when disassembling control unit sometimes.
Description of drawings
Explain the present invention with reference to the accompanying drawings by means of a plurality of embodiments below.Wherein:
Fig. 1 is by the front elevation of accumulator lid of the present invention and accumulator package, and accumulator package is arranged on the seal element of high-pressure accumulator unit;
Fig. 2 the present invention presses the side view of the accumulator lid of Fig. 1, can see the boundary seam between two modular members;
Fig. 3 is by the layout plan of accumulator package on oil sprayer of accumulator lid of the present invention;
Fig. 4 is by the layout plan in the pressure tube of accumulator package between seal element and oil sprayer of accumulator lid of the present invention.
Embodiment
The known member that has or do not have inserts by similar pipe of accumulator package constitutes, this accumulator package by means of by the accumulator of Fig. 1 to 4 lid respectively in end face seal and roughly be arranged on along the internal-combustion engine that does not illustrate on the height of cylinder head.
Each accumulator package is connected with the oil sprayer 1 of at least one common electric control by means of at least one pressure tube 2.
In the preferred case, be the cylinder handled of two needs each an accumulator package is set.In cylinder number is under the situation of odd number, can only handle a cylinder by random positioned accumulator package for one.According to engine type and applicable cases, each accumulator package connected to one another is oil-filled by two to six high-pressure service pumps.
As described in starting, fuel oil enters in the accumulator lid 3 through a Flow restrictor from corresponding accumulator package, and wherein, an accumulator lid 3 comprises a plurality of functional units.Therefore can control oil spout by a two position three-way valve, the direct switch of described valve or handle by the two position two-way valve of an Electromagnetic Control indirectly.Working principle in these these individual feature unit of more not deep discussion is because they are fully known for those of ordinary skill in the described prior art of beginning at least.
According to Fig. 1 and 2, comprise two members that separate by accumulator lid 3 of the present invention, i.e. a seal element 4 and a control unit 5 that has all above-mentioned functions unit.
End face at this unshowned high-pressure accumulator element of each seal element 4 sealing, it is fixedlyed connected with the member of the similar pipe of high-pressure accumulator element by means of a plurality of screws 7 for this reason.A control unit 5 is arranged on again on the seal element 4 and in this embodiment and is fixed on the seal element 4 by means of screw 8 equally.
As mentioned above, control unit 5 comprises at least one two position three-way valve (may comprise that a two position two-way valve is used to control two position three-way valve), flow-limiting valve, all hydraulic joint, and seal element 4 comprises fixed mechanism and the sealing mechanism that is used for whole accumulator element is remained on the tubular pressure accumulation body of retaining mechanism 6 on the internal-combustion engine and accumulator element.
Press that Fig. 3 and 4, one control units 5 also can be arranged on seal element 4 alternatively and the pressure tube 2 between the oil sprayer 1 of attaching troops to a unit in (Fig. 4) or just also be arranged on (Fig. 3) on the oil sprayer 1.
Be applicable to all types of large-sized diesel motors by fuel oil supply device of the present invention, be particularly useful for the heavy oil internal combustion engine driven.
Claims (8)
1. the fuel oil supply device of a common-rail injection system form, it is used for through the oil sprayer fuel feeding of pressure tube to the cylinder of internal-combustion engine, described fuel oil supply device has at least one pressure accumulating chamber in an accumulator package, this accumulator package can close by means of an accumulator cap seal on an end face at least, it is characterized in that: described accumulator lid two-piece type ground is made of the module of a seal element (4) and the module of a control unit (5), make seal element (4) and accumulator package be tightly connected securely and control unit (5) can be positioned at seal element (4) arbitrarily about pressure tube (2) and need between the oil sprayer (1) of fuel feeding, and consider fuel delivery and guiding, all functional units are integrated in the control unit (5).
2. by the described fuel oil supply device of claim 1, it is characterized in that: accumulator package by a plurality of that separate, constitute and in each pressure accumulating chamber, can cover (3) through an accumulator that constitutes by seal element (4) and control unit (5) respectively by means of the interconnective pressure accumulating chamber of transport pipe and be connected at least one oil sprayer.
3. by the described fuel oil supply device of claim 2, it is characterized in that: design pressure accumulating chamber makes them have a pressure accumulation volume that is used for to two oil sprayers (1) fuel feeding respectively, and on two end faces respectively the accumulator lid (3) that constitutes by seal element (4) and control unit (5) by means of a two-piece type seal.
4. by one of claim 1 to 3 described fuel oil supply device, it is characterized in that: the control unit (5) of accumulator lid (3) is being set directly at oil sprayer (1) before on the cylinder head and with respect to the pressure tube (2) between seal element (4) and oil sprayer (1).
5. by the described fuel oil supply device of one of claim 1 to 3, it is characterized in that: the control unit (5) of accumulator lid (3) is set directly on the seal element (4), and pressure tube (2) comes out and finishes on oil sprayer (1) from control unit (5).
6. by the described fuel oil supply device of one of claim 1 to 3, it is characterized in that: control unit (5) is arranged in the pressure tube (2) between seal element (4) and the oil sprayer (1).
7. by one of claim 1 to 3 described fuel oil supply device, it is characterized in that: the control unit (5) of accumulator lid (3) is integrated on the oil sprayer (1).
8. by the described fuel oil supply device of claim 1, it is characterized in that: when the diameter of pressure tube (2) was about 7mm, seal element (4) was of a size of 0mm to 2000mm with the apart of control unit (5).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102004057955.5 | 2004-11-30 | ||
| DE102004057955A DE102004057955A1 (en) | 2004-11-30 | 2004-11-30 | Fuel supply system in form of common rail fuel injection system for internal combustion engine and has accumulator cover comprising sealing element and control unit with sealing element in sealed communication with accumulator unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1818368A CN1818368A (en) | 2006-08-16 |
| CN1818368B true CN1818368B (en) | 2010-06-09 |
Family
ID=35458821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005101285273A Active CN1818368B (en) | 2004-11-30 | 2005-11-30 | Fuel supply device with a pressure accumulator tube closed by accumulator cover |
Country Status (5)
| Country | Link |
|---|---|
| JP (1) | JP2006153014A (en) |
| KR (1) | KR20060060614A (en) |
| CN (1) | CN1818368B (en) |
| DE (1) | DE102004057955A1 (en) |
| FI (1) | FI20051217A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007027943B3 (en) * | 2007-06-18 | 2008-10-16 | Mtu Friedrichshafen Gmbh | Method for regulating the rail pressure during a start-up procedure |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6536416B1 (en) * | 1999-08-20 | 2003-03-25 | Robert Bosch Gmbh | Fuel injection method and system for an internal combustion engine |
| CN1420266A (en) * | 2001-11-21 | 2003-05-28 | 曼·B及W柴油机公开股份有限公司 | Device for supply of fuel in form of public fuel supply piping structure in multi-cylinder IC engine |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0533741A (en) * | 1991-07-31 | 1993-02-09 | Nippondenso Co Ltd | Accumulator fuel injection device |
| DE4414242A1 (en) * | 1994-04-23 | 1995-10-26 | Bosch Gmbh Robert | Fuel injection device for internal combustion engines |
| JPH08261105A (en) * | 1995-03-22 | 1996-10-08 | Mitsubishi Motors Corp | Fuel injection device for internal combustion engine |
| JP2001107818A (en) * | 1999-08-05 | 2001-04-17 | Denso Corp | Fuel system |
-
2004
- 2004-11-30 DE DE102004057955A patent/DE102004057955A1/en not_active Ceased
-
2005
- 2005-11-25 JP JP2005339784A patent/JP2006153014A/en active Pending
- 2005-11-29 KR KR1020050115151A patent/KR20060060614A/en active Search and Examination
- 2005-11-29 FI FI20051217A patent/FI20051217A/en not_active Application Discontinuation
- 2005-11-30 CN CN2005101285273A patent/CN1818368B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6536416B1 (en) * | 1999-08-20 | 2003-03-25 | Robert Bosch Gmbh | Fuel injection method and system for an internal combustion engine |
| CN1420266A (en) * | 2001-11-21 | 2003-05-28 | 曼·B及W柴油机公开股份有限公司 | Device for supply of fuel in form of public fuel supply piping structure in multi-cylinder IC engine |
Also Published As
| Publication number | Publication date |
|---|---|
| FI20051217A (en) | 2006-05-31 |
| KR20060060614A (en) | 2006-06-05 |
| FI20051217A0 (en) | 2005-11-29 |
| JP2006153014A (en) | 2006-06-15 |
| CN1818368A (en) | 2006-08-16 |
| DE102004057955A1 (en) | 2006-06-01 |
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Address after: Augsburg Patentee after: MAN ENERGY SOLUTIONS SE Address before: Augsburg Patentee before: Man Diesel & Turbo SE |
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| CP01 | Change in the name or title of a patent holder | ||
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Address after: Augsburg Patentee after: MAN DIESEL SE Address before: Osborg, Germany Patentee before: Man B&W Diesel AG |
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Effective date of registration: 20190506 Address after: Augsburg Patentee after: MAN DIESEL & TURBO SE Address before: Augsburg Patentee before: MAN DIESEL SE |
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