EP1702157B1 - Systeme d'injection de carburant pour un moteur a combustion interne - Google Patents

Systeme d'injection de carburant pour un moteur a combustion interne Download PDF

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Publication number
EP1702157B1
EP1702157B1 EP04762535A EP04762535A EP1702157B1 EP 1702157 B1 EP1702157 B1 EP 1702157B1 EP 04762535 A EP04762535 A EP 04762535A EP 04762535 A EP04762535 A EP 04762535A EP 1702157 B1 EP1702157 B1 EP 1702157B1
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EP
European Patent Office
Prior art keywords
fuel
feed pump
pump
pressure
connection
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.)
Expired - Fee Related
Application number
EP04762535A
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German (de)
English (en)
Other versions
EP1702157A1 (fr
Inventor
Thomas Ludwig
Michael Mennicken
Andreas Kellner
Joachim Boltz
Falko Bredow
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Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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Publication date
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Publication of EP1702157A1 publication Critical patent/EP1702157A1/fr
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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
    • 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
    • F02M63/023—Means for varying pressure in common rails
    • F02M63/0235—Means for varying pressure in common rails by bleeding fuel pressure
    • F02M63/025—Means for varying pressure in common rails by bleeding fuel pressure from the common rail
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/04—Feeding by means of driven pumps
    • F02M37/08—Feeding by means of driven pumps electrically driven
    • F02M37/10—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir
    • F02M37/106—Feeding by means of driven pumps electrically driven submerged in fuel, e.g. in reservoir the pump being installed in a sub-tank
    • 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
    • F02M47/00—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure
    • F02M47/02—Fuel-injection apparatus operated cyclically with fuel-injection valves actuated by fluid pressure of accumulator-injector type, i.e. having fuel pressure of accumulator tending to open, and fuel pressure in other chamber tending to close, injection valves and having means for periodically releasing that closing pressure
    • F02M47/027—Electrically actuated valves draining the chamber to release the closing 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/002—Arrangement of leakage or drain conduits in or from 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
    • F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
    • F02M59/20—Varying fuel delivery in quantity or timing
    • F02M59/34—Varying fuel delivery in quantity or timing by throttling of passages to pumping elements or of overflow passages, e.g. throttling by means of a pressure-controlled sliding valve having liquid stop or abutment
    • 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

Definitions

  • the invention relates to a fuel injection device for an internal combustion engine according to the preamble of claim 1.
  • Such a fuel injection device is characterized by the DE 100 02 132 A1 known.
  • This fuel injection device has a high-pressure pump, is conveyed by the fuel in a memory.
  • a feed pump is provided, is conveyed by the fuel from a fuel tank to the suction side of the high-pressure pump.
  • a fuel metering device is arranged, through which the amount of fuel sucked by the high-pressure pump is variably adjustable.
  • At least one injector is connected to the reservoir, through which fuel is injected at the internal combustion engine. From the injector, a fuel return leads back to the fuel tank.
  • the fuel injection device with the features of claim 1 has the advantage that the feed pump can be relatively small dimensions, whereby the space requirements, the weight and the cost of the fuel injector can be kept low. Only if the amount of fuel delivered by the feed pump is less than the required intake of the high pressure pump, then fuel is additionally sucked from the fuel return from the high pressure pump. This ensures that the high-pressure pump predominantly sucks in the cool fuel conveyed by the delivery pump and only the shortfall due to the heated fuel from the fuel return is compensated.
  • the embodiment according to claim 3 ensures that only fuel from the fuel return is sucked in by the high-pressure pump when the amount of fuel delivered by the delivery pump is less than the required intake quantity.
  • the embodiment according to claim 4 ensures lubrication and cooling of the drive region of the high-pressure pump.
  • the embodiment according to claim 5 ensures that the drive region of the high-pressure pump is supplied only by the delivery pump and therefore cooler fuel.
  • In the embodiment according to claim 8 flows only sucked by the high-pressure pump amount of fuel through the filter, so that it can be designed correspondingly smaller or simpler.
  • FIG. 1 shows a fuel injection device for an internal combustion engine in a schematic representation according to a first embodiment
  • Figure 2 shows the fuel injection device according to a second embodiment
  • Figure 3 shows the fuel injection device according to a third embodiment.
  • FIGS. 1 to 3 show a fuel injection device for an internal combustion engine, for example of a motor vehicle.
  • the internal combustion engine is preferably a self-igniting internal combustion engine and has one or more cylinders.
  • the motor vehicle has a fuel tank 10, is stored in the fuel for the operation of the internal combustion engine.
  • the fuel injection device has a feed pump 12, is conveyed by the fuel from the fuel tank 10 to a high-pressure pump 14.
  • the high-pressure pump 14 delivers fuel into a reservoir 16, which may be formed, for example, tubular or in any other form.
  • At least one line 18 leads from the reservoir 16 to at least one injector 20 arranged on a cylinder of the internal combustion engine, preferably several injectors 20 are connected to the reservoir 16.
  • an electric control valve 22 is respectively arranged, through which an opening of the injectors is controlled, so as to effect a fuel injection by the respective injector 20 or to prevent fuel injection.
  • the control valves 22 are controlled by an electronic control device 23 controlled by the function of operating parameters of the internal combustion engine, such as speed, load, temperature and others, the timing and the duration of the fuel injection by the injectors 20 is determined.
  • the injectors 20 performs a fuel return for unused fuel, for example, via a common for all injectors 20 line 24 back.
  • From the memory 16 can also return a line 26 as return to the fuel tank 10, in which a pressure limiting valve or pressure control valve 28 is arranged to prevent the accumulation of an unacceptably high pressure in the memory 16 and the pressure prevailing in the memory 16 can be varied ,
  • a pressure increasing device 21 may be arranged, through which the pressure available for fuel injection pressure is increased again compared to the pressure prevailing in the memory 16 pressure.
  • the pressure increasing device 21 is preferably integrated in the injector 20 and designed as a hydraulic pressure booster.
  • the fuel return 24 preferably leads from the pressure increasing device 21 of the injectors 20 from.
  • the high-pressure pump 14 is mechanically driven by the internal combustion engine and thus proportional to the speed of the internal combustion engine.
  • the feed pump 12 is also mechanically driven by the internal combustion engine or the high pressure pump 14 in a first embodiment shown in Figure 1.
  • the feed pump 12 is preferably attached to the high pressure pump 14 or integrated into this.
  • a filter 30 is arranged between the feed pump 12 and the fuel tank 10.
  • a throttle 31 may be arranged to limit the flow.
  • a jam pot 32 is arranged be, from which the feed pump 12 sucks fuel and in the means of a jet pump 33 fuel is conveyed from the fuel tank 10. The amount of the jet pump 33 is supplied from the reservoir 16 through the fuel return 26.
  • the high pressure pump 14 may be formed as a radial piston pump and has at least one or more pump elements, each having a driven by a drive shaft in a reciprocating pump piston, which limits a pump working space.
  • a fuel metering device 36 is arranged between the feed pump 12 and the high-pressure pump 14.
  • the fuel metering device 36 has a control valve 38 actuated, for example, by an electric actuator 37, preferably an electromagnet or a piezoactuator, by means of which the flow rate from the feed pump 12 to the high-pressure pump 14 can be continuously adjusted.
  • the control valve 38 may be formed as a proportional valve, through which the flow cross-section between the feed pump 12 and the high pressure pump 14 is continuously variable.
  • control valve 38 can also be opened and closed in a clocked manner, whereby a mean effective flow cross section between the feed pump 12 and the high-pressure pump 14 is variable.
  • the fuel metering device 36 is preferably mounted to or integrated with the high pressure pump 14, but may be disposed separately from the high pressure pump 14.
  • the fuel metering device 36 is actuated by the control device 23 in such a way that a quantity of fuel is supplied to the high-pressure pump 14 by the feed pump 12 which is then conveyed under high pressure into the reservoir 16 by the high-pressure pump 14 in order to produce in the reservoir 16 a predetermined, to maintain pressure dependent on operating parameters of the internal combustion engine.
  • a pressure sensor 17 which is connected to the control device 23 and supplies a signal for the actual pressure in the memory 16.
  • the fuel return 24 from the injectors 20 opens into the connection between the feed pump 12 and the fuel metering device 36.
  • a connection 40 leads to a discharge area, serving as the fuel tank 10, for example, and which is controlled by a pressure valve 42.
  • the pressure valve 42 By the pressure valve 42, the compound 40 is opened when exceeding a predetermined pressure, so that fuel can flow into the fuel tank 10.
  • the connection 40 can open into the return line 26 from the reservoir 16, so that the amount of fuel diverted by the pressure valve 42 is also supplied to the jet pump 33 as a drive quantity.
  • the pressure valve 42 is preferably attached to the high pressure pump 14 or integrated into it.
  • the connection 40 branches from the fuel return 24 at a distance from its mouth in the connection between the feed pump 12 and the fuel metering device 36, so that between the mouth and the branch of the connection 40, a fuel return path 24 a is present.
  • a bypass connection 44 leads to a drive region of the high-pressure pump 14 in a region between the feed pump 12 and the mouth of the fuel return path 24a.
  • the drive range of the high-pressure pump 14 is its drive shaft and the region of implementation of the rotational movement of the drive shaft in the lifting movement of the pump piston.
  • the fuel flowing into the drive region via the bypass connection 44 ensures lubrication and cooling of the drive region.
  • In the bypass connection 44 is preferably a throttle point 45th arranged to limit the amount of fuel supplied to the drive section.
  • a return line 46 leads back to the fuel reservoir 10, which can open, for example, into the connection 40 and the return 26 from the reservoir 16. By the return 46 a constant flow through the drive range of the high-pressure pump 14 is ensured.
  • the feed pump 12 picks up fuel from the fuel tank 10 and delivers it through the fuel metering device 36 to the suction side of the high-pressure pump 14.
  • High-pressure pump 14 delivers fuel under high pressure into the reservoir 16.
  • Fuel is injected into the cylinders of the internal combustion engine through the injectors 20, the time of the fuel injection and the injected fuel quantity being determined by the control of the control valves 22 by the control device 23 as a function of operating parameters of the internal combustion engine.
  • the fuel metering device 36 is also controlled such that it adjusts such a large flow cross-section that is sucked by the high-pressure pump 14, the amount of fuel and conveyed into the memory 16, which is required to maintain a predetermined pressure in the memory 16.
  • the injectors 20 are provided with pressure increasing means 21, so depending on the operating condition of the internal combustion engine, a large amount of fuel must be conveyed by the high-pressure pump 14 in the memory 16 and by the feed pump 12, this large amount of fuel from the fuel tank 10th be promoted to the high pressure pump 14. This can lead to a very large pump 12 would be required.
  • the delivery pump 12 is dimensioned so that the maximum amount of fuel delivered by this is less than the maximum amount of fuel to be taken in by the high-pressure pump 14 and to be conveyed into the reservoir 16.
  • the fuel return line 24a is traversed by fuel in different directions depending on the operating state. If the amount of fuel delivered by the feed pump 12 is less than the required suction amount of the high-pressure pump 14, the fuel return line 24a is flowed through by a subset of the amount of fuel flowing back through the fuel return 24 from the injectors 22 to the high-pressure pump 14. If the amount of fuel delivered by the feed pump 12 is greater than the required intake quantity of the high-pressure pump 14, the fuel return line 24a is flowed through by a subset of the amount of fuel delivered by the feed pump 12 to the pressure valve 42.
  • the fuel return line 24a is thereby ensured that with sufficient flow rate of the feed pump 12 is sucked only from this subsidized fuel from the high-pressure pump 14 and only with insufficient flow rate of the feed pump 12 from the high-pressure pump 14 and fuel from the fuel return 24 is sucked. Only the amount of fuel delivered by the feed pump 12 flows through the filter 30, while the amount of fuel removed from the fuel return 24 only after the filter 30 is fed. However, the amount of fuel possibly conveyed too much by the feed pump 12 and discharged via the fuel return line 24a and the pressure valve 42 and the connection 40 also flows through the filter 30.
  • the fuel injection device according to a second embodiment is shown, in which the basic structure is the same as the first; Embodiment and only the feed pump 12 is modified.
  • the feed pump 12 is arranged separately from the high-pressure pump 14, has an electric drive and is preferably arranged in the fuel tank 10.
  • the filter 30 is arranged and the bypass connection 44 to the drive region of the high-pressure pump 14 branches off between the filter 30 and the fuel metering device 36.
  • Within the fuel tank 10 leads from the connection of the feed pump 12 to the filter 30 from a return 48 into the fuel tank 10, which is controlled by a pressure valve 49.
  • FIG. 3 shows the fuel injection device according to a third exemplary embodiment, in which the basic structure is the same as in the second exemplary embodiment, but the arrangement of the pressure valve 42 and the fuel return path 24a is modified.
  • the feed pump 12 has an electric drive and is arranged in the fuel tank 10. Between the filter 30 and the fuel metering device 36, the bypass connection 44 leading to the drive region of the high-pressure pump 14 branches off.
  • the fuel return 24 from the injectors 20 opens into the connection between the feed pump 12 and the filter 30. From the fuel return 24 controlled by the pressure valve 42 connection 40 leads to the fuel tank 10 from. Between the junction of the connection 40 and the mouth of the fuel return 24 in the connection between the feed pump 12 and the. Filter 30, the fuel return path 24 a is formed.
  • the pressure valve 42 may be arranged separately from the high-pressure pump 14 in the third embodiment.
  • the function of the fuel injection device according to the third embodiment is substantially the same as in the first and second embodiments.
  • the fuel return line 24a is traversed by fuel in different directions depending on the operating state. If the amount of fuel delivered by the feed pump 12 is less than the required suction amount of the high-pressure pump 14, the fuel return line 24a is flowed through by a subset of the amount of fuel flowing back through the fuel return 24 from the injectors 22 to the high-pressure pump 14. If the amount of fuel delivered by the feed pump 12 is greater than the required intake quantity of the high-pressure pump 14, the fuel return line 24a is flowed through by a subset of the amount of fuel delivered by the feed pump 12 to the pressure valve 42.
  • the fuel return line 24a is thereby ensured that with sufficient flow rate of the feed pump 12 is sucked only from this subsidized fuel from the high-pressure pump 14 and only with insufficient flow rate of the feed pump 12 from the high-pressure pump 14 and fuel from the fuel return 24 is sucked.
  • the entire amount of fuel sucked by the high-pressure pump 14 flows through the filter 30.
  • the amount of fuel possibly delivered by the delivery pump 12 does not flow through the filter 30, since this before the filter 30 via the fuel return path 24a and the pressure valve 42 and the connection 40 is deactivated.
  • the amount of fuel supplied via the bypass connection 44 to the drive region of the high-pressure pump 14 is branched off only when there is sufficient flow rate of the delivery pump 12, exclusively by the cold fuel conveyed out of the fuel supply container 10 by the latter. If the flow rate of the feed pump 12 is insufficient, the fuel quantity supplied to the drive region is diverted from the mixture of the cold fuel conveyed from the fuel tank 10 by the feed pump 12 and the heated fuel removed from the fuel return 24. Compared with the first and second embodiments, the drive region of the high-pressure pump 14 in the third embodiment is thus supplied with a slightly higher temperature at insufficient flow rate of the feed pump 12.

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  • 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)

Claims (11)

  1. Système d'injection de carburant pour un moteur à combustion interne comportant une pompe haute pression (14) amenant du carburant sous haute pression dans un accumulateur (16), une pompe de refoulement (12) amenant le carburant vers le côté aspiration de la pompe haute pression (14), un système de dosage de carburant (36) entre la pompe de refoulement (12) et la pompe haute pression (14), qui permet le réglage variable de la quantité de carburant aspirée par cette pompe, au moins un injecteur (20) relié à l'accumulateur (16), qui injecte le carburant dans le moteur à combustion interne, et un retour de carburant (24) à partir d'au moins un injecteur (20),
    caractérisé en ce que
    le retour de carburant (24) à partir d'au moins un injecteur (20) débouche dans la liaison entre la pompe de refoulement (12) et le système de dosage de carburant (36), à partir du retour de carburant (24) une liaison (40) commandée par une soupape de compression (42) conduit vers une zone de décharge (10), et la pompe haute pression (14) aspire seulement du carburant dans le retour de carburant (24) dans les états de fonctionnement où la quantité de carburant refoulée par la pompe de refoulement (12) est plus faible que la quantité aspirée nécessaire de la pompe haute pression (14).
  2. Système d'injection de carburant selon la revendication 1,
    caractérisé en ce que
    la pompe haute pression (14) aspire dans le retour de carburant (24) seulement la différence entre sa quantité d'aspiration nécessaire et la quantité de carburant refoulée par la pompe de refoulement (12).
  3. Système d'injection de carburant selon la revendication 1 ou 2,
    caractérisé en ce que
    la branche de la liaison (40) du retour de carburant (24) qui conduit à la zone de décharge (10) est écartée de l'embouchure de ce retour de carburant (24) dans la liaison entre la pompe de refoulement (12) et le système de dosage de carburant (36), pour former trajet du retour de carburant (24a) entre la branche de la liaison (40) conduisant à la zone de décharge (10) et l'embouchure du retour de carburant (24).
  4. Système d'injection de carburant selon l'une des revendications 1 à 3,
    caractérisé en ce qu'
    une liaison en dérivation (44) part de la liaison entre la pompe de refoulement (12) et le système de dosage de carburant (36) vers une zone d'entraînement de la pompe haute pression (14).
  5. Système d'injection de carburant selon la revendication 4,
    caractérisé en ce que
    le retour de carburant (24) débouche, entre le départ de la liaison en dérivation (44) et le système de dosage de carburant (36), dans la liaison entre la pompe de refoulement (12) et le système de dosage de carburant (36).
  6. Système d'injection de carburant selon la revendication 4,
    caractérisé en ce que
    le retour de carburant (24) débouche, entre la pompe de refoulement (12) et le départ de la liaison en dérivation (44), dans la liaison entre la pompe de refoulement (12) et le système de dosage de carburant (36).
  7. Système d'injection de carburant selon l'une des revendications précédentes,
    caractérisé en ce qu'
    un filtre (30) est monté en amont de la pompe de refoulement (12) côté aspiration et/ou un filtre (30) est monté en aval côté pression, et le retour de carburant (24) débouche en aval après le filtre (30) dans la liaison entre la pompe de refoulement (12) et le système de dosage de carburant (36).
  8. Système d'injection de carburant selon l'une des revendications 1 à 6,
    caractérisé en ce qu'
    un filtre (30) est monté en amont de la pompe de refoulement (12) côté aspiration et/ou un filtre (30) est monté en aval côté pression, et le retour de carburant (24) débouche en amont devant le filtre (30) dans la liaison entre la pompe de refoulement (12) et le système de dosage de carburant (36).
  9. Système d'injection de carburant selon l'une des revendications précédentes,
    caractérisé en ce que
    la pompe de refoulement (12) est à entraînement électrique.
  10. Système d'injection de carburant selon l'une des revendications 1 à 8,
    caractérisé en ce que
    la pompe de refoulement (12) est entraînée mécaniquement par le moteur à combustion interne ou la pompe haute pression (14).
  11. Système d'injection de carburant selon l'une des revendications précédentes,
    caractérisé en ce qu'
    un dispositif d'élévation de pression (21), d'où part le retour de carburant (24), est disposé sur au moins un injecteur (20).
EP04762535A 2003-09-19 2004-07-28 Systeme d'injection de carburant pour un moteur a combustion interne Expired - Fee Related EP1702157B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10343480A DE10343480A1 (de) 2003-09-19 2003-09-19 Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
PCT/DE2004/001690 WO2005038237A1 (fr) 2003-09-19 2004-07-28 Systeme d'injection de carburant pour un moteur a combustion interne

Publications (2)

Publication Number Publication Date
EP1702157A1 EP1702157A1 (fr) 2006-09-20
EP1702157B1 true EP1702157B1 (fr) 2007-07-18

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EP04762535A Expired - Fee Related EP1702157B1 (fr) 2003-09-19 2004-07-28 Systeme d'injection de carburant pour un moteur a combustion interne

Country Status (6)

Country Link
US (1) US7219654B2 (fr)
EP (1) EP1702157B1 (fr)
JP (1) JP4217714B2 (fr)
CN (1) CN100455789C (fr)
DE (2) DE10343480A1 (fr)
WO (1) WO2005038237A1 (fr)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7845162B2 (en) * 2005-06-20 2010-12-07 Cummins Filtration Ip, Inc Apparatus, system, and method for diverting fluid
WO2006136328A1 (fr) * 2005-06-21 2006-12-28 Daimlerchrysler Ag Dispositif d'alimentation en carburant
DE102005033634A1 (de) * 2005-07-19 2007-01-25 Robert Bosch Gmbh Hochdruck-Kraftstoffpumpe für ein Kraftstoff-Einspritzsystem einer Brennkraftmaschine
DE102006023470A1 (de) * 2006-05-18 2007-11-22 Siemens Ag Common-Rail-Einspritzsystem
DE102007044001B4 (de) * 2007-09-14 2019-08-01 Robert Bosch Gmbh Verfahren zur Steuerung eines Kraftstoffeinspritzsystems einer Brennkraftmaschine
US7669570B2 (en) * 2007-09-28 2010-03-02 Gm Global Technology Operations, Inc. Diesel fuel injection priming system
US7568471B2 (en) * 2007-09-28 2009-08-04 Gm Global Technology Operations, Inc. Diesel fuel injection priming system
US7717077B2 (en) * 2007-11-13 2010-05-18 Gm Global Technology Operations, Inc. Internal combustion engine starting system and method
JP4433043B2 (ja) * 2007-12-05 2010-03-17 株式会社デンソー 燃料供給装置
WO2009151442A1 (fr) * 2008-06-09 2009-12-17 Cummins Filtration Ip Inc Appareil, système et procédé de déviation de fluide
DE102008041067A1 (de) * 2008-08-07 2010-02-11 Robert Bosch Gmbh Druckpumpenvorrichtung für ein Hybridfahrzeug
DE102008055935A1 (de) * 2008-11-05 2010-05-12 Continental Automotive Gmbh Einspritzanlage für eine Brennkraftmaschine
DE102009028023A1 (de) * 2009-07-27 2011-02-03 Robert Bosch Gmbh Hochdruck-Einspritzsystem mit Kraftstoffkühlung aus Niederdruckbereich
ITMI20091355A1 (it) 2009-07-29 2011-01-30 Bosch Gmbh Robert Impianto di alimentazione carburante ad un motore a combustione interna
US20110239993A1 (en) * 2010-03-31 2011-10-06 Denso International America, Inc. Diesel feedside boost pump
CN101957264A (zh) * 2010-05-26 2011-01-26 南车戚墅堰机车有限公司 柴油机试验台专用燃油***
DE102010031622A1 (de) * 2010-07-21 2012-01-26 Robert Bosch Gmbh Kraftstofffördereinrichung
US20130233283A1 (en) * 2012-03-09 2013-09-12 GM Global Technology Operations LLC Bimetallic thermostatic flow valve for diesel fuel systems
US9784226B2 (en) * 2013-02-07 2017-10-10 Ford Global Technologies, Llc Vehicle fuel delivery system
FR3018553B1 (fr) * 2014-03-11 2018-11-02 Renault S.A.S. Circuit d'alimentation en carburant pour moteur a combustion interne
US20160186706A1 (en) * 2014-07-15 2016-06-30 Brazil Green Energy Technologies, Llc Systems and methods for fuel state control with fuel recirculation and preheat
US10865728B2 (en) * 2019-01-18 2020-12-15 Pratt & Whitney Canada Corp. Method of using backflow from common-rail fuel injector
US10738749B1 (en) 2019-01-18 2020-08-11 Pratt & Whitney Canada Corp. Method of using heat from fuel of common-rail injectors
CN114439658B (zh) * 2020-10-30 2023-06-06 英嘉动力科技无锡有限公司 一种双燃料直喷***发动机的燃料供给***

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH668621A5 (de) * 1986-01-22 1989-01-13 Dereco Dieselmotoren Forschung Kraftstoffeinspritzanlage fuer eine brennkraftmaschine.
DE19649139B4 (de) 1995-12-08 2007-05-10 Volkswagen Ag Einspritzvorrichtung für Kraftstoff-Verbrennungsmotoren
EP0893598B1 (fr) 1997-07-26 2003-05-28 Delphi Technologies, Inc. Système de combustible
DE19757655C2 (de) * 1997-12-23 2002-09-26 Siemens Ag Verfahren und Vorrichtung zur Funktionsüberwachung eines Drucksensors
IT1306317B1 (it) * 1998-07-16 2001-06-04 Magneti Marelli Spa Dispositivo di pompaggio ad alta pressione
DE10002132A1 (de) * 2000-01-19 2001-08-02 Siemens Ag Verfahren und Vorrichtung zur Regelung des Antriebsmoments einer Verbrennungskraftmaschine mit Common-Rail-Einspritzung
DE10023621A1 (de) * 2000-05-13 2001-11-15 Bosch Gmbh Robert Kraftstoffeinspritzsystem für Brennkraftmaschinen
JP4623930B2 (ja) * 2000-08-14 2011-02-02 スタナディーン コーポレイション 自動車用のコモンレール式燃料噴射装置
IT1320684B1 (it) * 2000-10-03 2003-12-10 Fiat Ricerche Dispositivo di controllo della portata di una pompa ad alta pressionein un impianto di iniezione a collettore comune del combustibile di un
JP2003021017A (ja) 2001-07-10 2003-01-24 Bosch Automotive Systems Corp 蓄圧式燃料噴射装置
DE10205187A1 (de) * 2002-02-08 2003-08-21 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
DE10218021A1 (de) * 2002-04-23 2003-11-06 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
DE10237586A1 (de) 2002-08-16 2004-02-26 Robert Bosch Gmbh Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
DE10239429A1 (de) * 2002-08-28 2004-03-11 Robert Bosch Gmbh Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
DE10244551A1 (de) * 2002-09-25 2004-04-08 Robert Bosch Gmbh Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

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CN100455789C (zh) 2009-01-28
JP2006514721A (ja) 2006-05-11
US7219654B2 (en) 2007-05-22
WO2005038237A1 (fr) 2005-04-28
DE502004004399D1 (de) 2007-08-30
EP1702157A1 (fr) 2006-09-20
DE10343480A1 (de) 2005-04-14
JP4217714B2 (ja) 2009-02-04
US20060169252A1 (en) 2006-08-03
CN1853043A (zh) 2006-10-25

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