WO2008025597A1 - Dispositif d'injection de carburant pour un moteur à combustion interne à plusieurs cylindres - Google Patents

Dispositif d'injection de carburant pour un moteur à combustion interne à plusieurs cylindres Download PDF

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Publication number
WO2008025597A1
WO2008025597A1 PCT/EP2007/056920 EP2007056920W WO2008025597A1 WO 2008025597 A1 WO2008025597 A1 WO 2008025597A1 EP 2007056920 W EP2007056920 W EP 2007056920W WO 2008025597 A1 WO2008025597 A1 WO 2008025597A1
Authority
WO
WIPO (PCT)
Prior art keywords
pressure
injector
fuel injection
hydraulic line
pressure pump
Prior art date
Application number
PCT/EP2007/056920
Other languages
German (de)
English (en)
Inventor
Thomas Pauer
Bjoern Noack
Christian Kuhnert
Christoph Weisser
Anette Siebke
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
Application filed by Robert Bosch Gmbh filed Critical Robert Bosch Gmbh
Publication of WO2008025597A1 publication Critical patent/WO2008025597A1/fr

Links

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
    • 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
    • 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
    • F02M63/0245—Means for varying pressure in common rails by bleeding fuel pressure between the high pressure pump and 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
    • 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
    • F02M63/0275—Arrangement of common rails
    • F02M63/0285—Arrangement of common rails having more than one common rail
    • F02M63/0295—Arrangement of common rails having more than one common rail for V- or star- or boxer-engines
    • 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
    • F02M2200/70—Linkage between actuator and actuated element, e.g. between piezoelectric actuator and needle valve or pump plunger
    • 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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/0603—Injectors peculiar thereto with means directly operating the valve needle using piezoelectric or magnetostrictive operating means

Definitions

  • the invention is based on a
  • Fuel injection device for a multi-cylinder internal combustion engine according to the preamble of claim 1.
  • Fuel injection device has a high-pressure pump through which fuel in a high-pressure accumulator, a so-called rail, is required.
  • a high-pressure accumulator for each cylinder of the internal combustion engine, an injector for fuel injection is provided, wherein each injector is connected via a connected to a high-pressure port of the injector hydraulic line to the high-pressure accumulator.
  • a disadvantage of this fuel injection device is the large manufacturing and assembly costs, which is caused by the arranged between the high-pressure pump and the injectors high-pressure accumulator.
  • the high-pressure accumulator must have a high strength because of the pressure prevailing in this high pressure.
  • the high-pressure accumulator must have a relatively large volume to ensure the supply of all injectors, which in the environment of the internal combustion engine for the high-pressure accumulator, a large space is required.
  • two separate high-pressure accumulator are usually provided, in particular when the cylinders are arranged v-shaped, whereby the cost is further increased.
  • the inventive fuel injection device with the features of claim 1 has the advantage that in this no high-pressure accumulator but only the distributor element is required, whereby their manufacture and assembly is simplified and their space requirement is reduced.
  • the distributor element ensures that in the high pressure area with the injectors and the hydraulic lines each high pressure demand of the high-pressure pump generates the same pressure profile.
  • FIG. 1 shows a
  • FIG. 1 Fuel injector for an internal combustion engine in a simplified representation according to a first exemplary embodiment
  • Figure 2 shows an injector of the fuel injection device in an enlarged view and Figures 3 to 5, the fuel injection device according to further exemplary embodiments.
  • Fuel injection device for a multi-cylinder internal combustion engine shown which is preferably a self-igniting internal combustion engine of a motor vehicle.
  • the fuel injection device has at least one
  • High-pressure pump 10 through which fuel is required under high pressure.
  • an injector 12 On each cylinder of the internal combustion engine, an injector 12 is arranged, can be injected through the fuel into the combustion chamber of the cylinder. Only some of the injectors 12 are shown in FIGS. 1 to 8, with further injectors being indicated by dots from a first injector 12a to a last injector 12d.
  • Each injector 12 has as shown in Figure 2 a
  • Fuel injection valve 14 is injected by the fuel into the combustion chamber of the cylinder, and an electrically actuated actuator 16.
  • the actuator 16 By the actuator 16, the opening and closing movement of an injection valve member 15 of the fuel injection valve 14 is controlled.
  • the actuator 16 may be an electromagnetic actuator or a piezoelectric actuator that changes its size depending on an electrical voltage applied thereto. By this size change, a switching function can be achieved by means of the
  • Injection valve member 15 are opened or closed can.
  • the actuator 16 is driven by an electronic control device 18.
  • the actuator 16 is arranged in a fuel-filled space 20 in a housing 22 of the injector 12.
  • the actuator 16 can act, for example, on a piston 17, by which a control chamber 19 is limited, wherein the injection valve member 15 is acted upon by the pressure prevailing in the control chamber 19 in the closing direction.
  • the piston 17 is held by a prestressed spring 21 in contact with the actuator 16.
  • the injection valve member 15 is also acted upon by a prestressed spring 23 in the closing direction. If an electrical voltage is applied to the actuator 16 by the control device 18, it expands and prints the piston 17 into the control chamber 19, in which there is thus a high pressure, through which
  • Injection valve member 15 is held in its closed position, so that no fuel injection takes place. If no voltage is applied to the actuator 16 by the control device 18, this reduces its expansion, so that the piston 17 is moved out of the control chamber 19 by the spring 21, whereby the pressure in the control chamber 19 decreases. The injection valve member 15 is then by acting in this direction in the opening direction of high pressure against the prevailing in the control chamber 19 low pressure and against the force of the spring 23 in his
  • Open position moves so that fuel is injected.
  • two high pressure ports 24 may be provided, on the lower
  • High pressure fuel is supplied to the injector 12 and is continued by this.
  • the high-pressure connections 24 are connected to the space 20 in which the actuator 16 is arranged. In addition, the high-pressure connections 24 via the space 20 with the
  • Fuel injection valve 14 connected to this for to supply the fuel injection necessary fuel.
  • the space 20 forms a
  • the space 20 has a sufficiently large volume in order to be able to store the fuel volume required for the fuel injection.
  • the volume of the space 20 may be between 1 and 5 cm 3 , for example about 2 cm 3 .
  • Exemplary embodiment of the fuel injection device is a high-pressure pump 10 is provided, for example, has two pump elements 30a, b, each with a pump piston, is required by the fuel under high pressure.
  • the high-pressure pump 10 has only a single pump element 30. Alternatively, several separate high-pressure pumps 10 may be provided, each of which only one
  • Pump element 30 having its high-pressure outlet are brought together to form a common high-pressure outlet. It can also be provided that the outlets of the pump elements 30 are hydraulically connected to one another at the high-pressure pump 10, however, as shown in FIG. 3, they are connected to the distributor element 36 via their own hydraulic line 34 a, b. It can also be provided in a high-pressure pump 10 with only a single pump element 30 that it is connected via two hydraulic lines 34 with the distributor element 36.
  • a first injector 12a of the injectors 12 is connected directly to the distributor element 36 via a hydraulic line 38.
  • the first injector 12a directly connected to the distributor element 36 is the injector closest to the distributor element 36
  • the cylinders of the internal combustion engine and thus also the associated injectors 12 are arranged in series.
  • the injectors 12 are connected in series with one another by hydraulic lines 40 arranged between them, the first injector 12a being connected both directly to the distributor element 36 via the hydraulic line 38 and to the subsequent injector 12b via the hydraulic line 40.
  • the last injector 12d is directly connected to the distributor element 36 via the line 40 with the preceding injector 12 as well as via a hydraulic line 42.
  • a continuous hydraulic line 40 is present between the injectors 12, to which each injector 12 is connected, in which case at each
  • Injector 12 only one high pressure connection is required.
  • the distributor element 36, the hydraulic lines 38, 40, 42 and the injectors 12 form the high-pressure region of the fuel injection device.
  • FIG. 3 shows the fuel injection device according to a second exemplary embodiment, which differs from the first exemplary embodiment only in that the high-pressure outlet of the two pump elements 30a, b of the high-pressure pump 10 is connected to the distributor element 36 via a respective separate hydraulic line 34a and 34b are so that on the high-pressure pump 10 no Caribbeanschreibung the high-pressure outlet of the two pump elements 30a, b is required, however, the two hydraulic lines 34a, b are required to the distributor element 36.
  • the pump elements 30 are nevertheless hydraulically connected to one another at the high-pressure pump 10 and are connected to the distributor element 36 via their own hydraulic line 34a, b.
  • the fuel injection device according to a third exemplary embodiment is shown, in which the cylinders of the internal combustion engine are arranged v-shaped and two rows of a plurality of cylinders are present. Accordingly, the injectors 12 of the two rows of cylinders are each connected in series.
  • the first injector 12a of a first cylinder bank is connected via a hydraulic line 38 directly to the distributor element 36 and via a hydraulic line 40 to the subsequent injector 12b.
  • the injectors 12 of the first cylinder bank are interconnected by separate hydraulic lines 40 or a continuous hydraulic line 40.
  • the last injector 12d of the first bank of cylinders is connected to a first injector 12a 'of the second bank of cylinders via a hydraulic line 44 and the injectors 12' of the second bank of cylinders are connected to each other via separate hydraulic lines 40 'or a continuous hydraulic line 40'.
  • the last injector 12d 'of the second cylinder bank is directly connected to the distributor element 36 both via the hydraulic line 40' with the preceding injector 12c 'and via a hydraulic line 42' connected.
  • the high-pressure outlet of the pump elements 30 of the high-pressure pump 10 are combined, as in the first exemplary embodiment, on the high-pressure pump 10 to form a common high-pressure outlet which is connected to the distributor element 36 via a hydraulic line 34.
  • the high-pressure outlet of the pump elements 30a, b of the high-pressure pump are connected to the distributor element 36 via a respective hydraulic line or several separate ones
  • High-pressure pumps 10 are each provided with a pump element 30 whose high-pressure outlets are connected in each case via a hydraulic line directly to the distributor element 36.
  • FIG. 5 shows the fuel injection device according to a fourth exemplary embodiment, in which the cylinders of the internal combustion engine are arranged in a v-shape and two rows of a plurality of cylinders are present. Accordingly, the injectors 12 of the two
  • the first injector 12a is connected via the hydraulic line 38 directly to the distributor element 36 and via the hydraulic line 40 to the subsequent injector 12b.
  • the successive injectors 12 of the first cylinder bank are connected to each other via the separate hydraulic lines 40 or the continuous hydraulic line 40.
  • the last injector 12d of the first cylinder bank is connected to the preceding injector 12 and via the hydraulic line 42 directly to the Distributor element 36 connected.
  • its first injector 12a ' is connected via the hydraulic line 38' directly to the distributor element 36 and via the hydraulic line 40 'to the downstream injector 12b'.
  • the successive injectors 12 'of the second row of cylinders are connected to each other via the separate hydraulic lines 40' or the continuous hydraulic line 40 '.
  • the last injector 12d 'of the second bank of cylinders is connected to the preceding injector 12' and via the hydraulic line 42 'directly to the distributor element 36.
  • the high-pressure pump 10 may have two or more pump elements 30a, b whose high-pressure outlets, as in the first exemplary embodiment, are brought together on the high-pressure pump 10 to form a common high-pressure outlet which is connected to the distributor element 36 via the hydraulic line 34.
  • Pump elements 30a, b be connected via separate hydraulic lines 34a, 34b with the distributor element 36.
  • the fuel injector may include a pressure sensor 46 that is in electrical communication with
  • a fuel metering device 48 can be arranged, by means of which the quantity of fuel sucked in by the high-pressure pump 10 and demanded under high pressure can be changed.
  • a variable flow cross-section on the suction side of the high-pressure pump 10 can be set by the fuel metering device 48.
  • the suction side of the high-pressure pump 10 Fuel from a reservoir 50 by means of a Forderpumpe 52, wherein the
  • KraftstoffZumess Road 48 between the Forderpumpe 52 and the high-pressure pump 10 is arranged.
  • the fuel metering device 48 is controlled such that the high-pressure pump 10 requires a high-pressure fuel to the injectors 12, as required, in the injectors 12 and the hydraulic lines 38,40,42 a predetermined pressure for the fuel injection maintain.
  • the pressure sensor 46 is vorzuzguze as shown in Figures 1 and 3 to 5 arranged on the distributor element 36. Alternatively, however, the pressure sensor 46 can also be arranged on one of the injectors 12 or in one of the hydraulic lines 38, 40 or 42.
  • the fuel injection device may additionally or alternatively to the pressure sensor 46 have a pressure regulating valve 54, by means of which the pressure prevailing in the injectors 12 and the hydraulic lines 38, 40, 42 can be changed.
  • the pressure regulating valve 54 is preferably arranged on the distributor element 36. Alternatively, the pressure regulating valve 54 may also be arranged on the high-pressure pump 10, on an injector 12 or in one of the hydraulic lines 38, 40, 42.
  • the pressure regulating valve 54 is connected to and controlled by the control device 18 to set the pressure prevailing in the injectors 12 and the hydraulic lines 38, 40, 42 to a predetermined value.
  • a very rapid change of the pressure prevailing in the injectors 12 and the hydraulic lines 38, 40, 42 can be achieved.
  • the high pressure pump 10 at least substantially only for the Fuel injection required amount of fuel under high pressure to the injectors 12 is required, whereby the drive power for the high-pressure pump 10 can be kept low.
  • a pressure limiting valve can be provided, by which the pressure in the injectors 12 and the hydraulic lines 38,40,42 can be limited to a predetermined value.

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

Le dispositif d'injection de carburant selon l'invention présente au moins une pompe à haute pression (10) et un injecteur respectif (12) pour chaque cylindre du moteur à combustion interne. Chaque injecteur (12) est au moins indirectement relié à la pompe à haute pression (10) par une conduite hydraulique (38 ; 40 ; 42). La ou les pompes à haute pression (10) sont reliées à un élément distributeur (36). Au moins plusieurs des injecteurs (12) sont reliés entre eux en série par au moins une conduite hydraulique (40). Un premier injecteur (12a) et un dernier injecteur (12d) de la série d'injecteurs (12) sont directement reliés à l'élément distributeur (36) par une conduite hydraulique respective (38, 42).
PCT/EP2007/056920 2006-08-28 2007-07-09 Dispositif d'injection de carburant pour un moteur à combustion interne à plusieurs cylindres WO2008025597A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200610040248 DE102006040248A1 (de) 2006-08-28 2006-08-28 Kraftstoffeinspritzeinrichtung für eine mehrzylindrige Brennkraftmaschine
DE102006040248.0 2006-08-28

Publications (1)

Publication Number Publication Date
WO2008025597A1 true WO2008025597A1 (fr) 2008-03-06

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PCT/EP2007/056920 WO2008025597A1 (fr) 2006-08-28 2007-07-09 Dispositif d'injection de carburant pour un moteur à combustion interne à plusieurs cylindres

Country Status (2)

Country Link
DE (1) DE102006040248A1 (fr)
WO (1) WO2008025597A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009016066A1 (fr) * 2007-07-30 2009-02-05 Robert Bosch Gmbh Système d'injection de carburant pour moteur à combustion interne
CN103890371A (zh) * 2011-10-03 2014-06-25 臼井国际产业株式会社 共轨式燃料喷射系统

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009002128A1 (de) 2009-04-02 2010-10-14 Robert Bosch Gmbh Kraftstoffeinspritzvorrichtung
DE102009055129A1 (de) 2009-12-22 2011-06-30 Robert Bosch GmbH, 70469 Brennstoffeinspritzeinrichtung
GB201317451D0 (en) * 2013-10-02 2013-11-13 Delphi Tech Holding Sarl Fuel Injection Equipment
DE102014213257B4 (de) * 2014-07-08 2022-12-29 Volkswagen Aktiengesellschaft Zylinderkopf für Brennkraftmaschine
DE102018006853A1 (de) * 2018-08-29 2019-09-26 Mtu Friedrichshafen Gmbh Modulares Common-Railsystem

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3705848A1 (de) * 1987-02-24 1988-09-01 Bosch Gmbh Robert Hydraulischer kreislauf einer kraftstoffeinspritzanlage
EP0299337A2 (fr) 1987-07-08 1989-01-18 IVECO FIAT S.p.A. Système d'injection de carburant pour un moteur à combustion interne
US5191867A (en) * 1991-10-11 1993-03-09 Caterpillar Inc. Hydraulically-actuated electronically-controlled unit injector fuel system having variable control of actuating fluid pressure
WO2000049283A2 (fr) * 1999-02-17 2000-08-24 Ilija Djordjevic Pompe a debit variable destinee a l'injection directe d'essence
WO2003023266A1 (fr) * 2001-09-06 2003-03-20 Invensys Sensor Systems Vanne de regulation de pression presentant des fonctions de reglage
EP1361359A1 (fr) * 2002-04-23 2003-11-12 Robert Bosch Gmbh Dispositif d'injection de carburant pour moteurs à combustion interne
EP1469188A1 (fr) * 2003-04-08 2004-10-20 General Motors Corporation System d'injection diesel avec une conduite de carburant à double flux
WO2006100142A1 (fr) * 2005-03-21 2006-09-28 Robert Bosch Gmbh Dispositif d'injection de carburant pour un moteur thermique a plusieurs cylindres
EP1780406A1 (fr) * 2005-10-25 2007-05-02 CRT Common Rail Technologies AG Injecteur pour un système d'injection de carburant et système d'injection de carburant avec tel injecteur

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3705848A1 (de) * 1987-02-24 1988-09-01 Bosch Gmbh Robert Hydraulischer kreislauf einer kraftstoffeinspritzanlage
EP0299337A2 (fr) 1987-07-08 1989-01-18 IVECO FIAT S.p.A. Système d'injection de carburant pour un moteur à combustion interne
US5191867A (en) * 1991-10-11 1993-03-09 Caterpillar Inc. Hydraulically-actuated electronically-controlled unit injector fuel system having variable control of actuating fluid pressure
WO2000049283A2 (fr) * 1999-02-17 2000-08-24 Ilija Djordjevic Pompe a debit variable destinee a l'injection directe d'essence
WO2003023266A1 (fr) * 2001-09-06 2003-03-20 Invensys Sensor Systems Vanne de regulation de pression presentant des fonctions de reglage
EP1361359A1 (fr) * 2002-04-23 2003-11-12 Robert Bosch Gmbh Dispositif d'injection de carburant pour moteurs à combustion interne
EP1469188A1 (fr) * 2003-04-08 2004-10-20 General Motors Corporation System d'injection diesel avec une conduite de carburant à double flux
WO2006100142A1 (fr) * 2005-03-21 2006-09-28 Robert Bosch Gmbh Dispositif d'injection de carburant pour un moteur thermique a plusieurs cylindres
EP1780406A1 (fr) * 2005-10-25 2007-05-02 CRT Common Rail Technologies AG Injecteur pour un système d'injection de carburant et système d'injection de carburant avec tel injecteur

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009016066A1 (fr) * 2007-07-30 2009-02-05 Robert Bosch Gmbh Système d'injection de carburant pour moteur à combustion interne
CN103890371A (zh) * 2011-10-03 2014-06-25 臼井国际产业株式会社 共轨式燃料喷射系统
EP2765301A4 (fr) * 2011-10-03 2015-08-19 Usui Kokusai Sangyo Kk Système d'injection de carburant à rampe commune

Also Published As

Publication number Publication date
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