EP1123462B1 - Dispositif d'injection de carburant - Google Patents

Dispositif d'injection de carburant Download PDF

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Publication number
EP1123462B1
EP1123462B1 EP00958209A EP00958209A EP1123462B1 EP 1123462 B1 EP1123462 B1 EP 1123462B1 EP 00958209 A EP00958209 A EP 00958209A EP 00958209 A EP00958209 A EP 00958209A EP 1123462 B1 EP1123462 B1 EP 1123462B1
Authority
EP
European Patent Office
Prior art keywords
pressure
fuel
valve
unit
nozzle
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 - Lifetime
Application number
EP00958209A
Other languages
German (de)
English (en)
Other versions
EP1123462A1 (fr
Inventor
Bernd Mahr
Martin Kropp
Hans-Christoph Magel
Wolfgang Otterbach
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1123462A1 publication Critical patent/EP1123462A1/fr
Application granted granted Critical
Publication of EP1123462B1 publication Critical patent/EP1123462B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/02—Injectors structurally combined with fuel-injection pumps
    • F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
    • F02M57/025—Injectors structurally combined with fuel-injection pumps characterised by the pump drive hydraulic, e.g. with pressure amplification
    • 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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • 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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • 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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/02—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts
    • F02M45/04—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship with each cyclic delivery being separated into two or more parts with a small initial part, e.g. initial part for partial load and initial and main part for full load
    • 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
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/02—Injectors structurally combined with fuel-injection pumps
    • F02M57/022—Injectors structurally combined with fuel-injection pumps characterised by the pump drive
    • F02M57/023—Injectors structurally combined with fuel-injection pumps characterised by the pump drive mechanical
    • 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
    • F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
    • F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
    • F02M59/105—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive hydraulic drive
    • 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
    • F02M63/0007—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 electrically actuated 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
    • F02M63/02—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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/21—Fuel-injection apparatus with piezoelectric or magnetostrictive elements

Definitions

  • the invention relates to a fuel injection device according to the preamble of Patent claim 1.
  • a fuel injection device of the type mentioned is, for example, by the US 4,811,899 become known.
  • the fuel injection device according to the invention may be formed both stroke-controlled and pressure-controlled.
  • a stroke-controlled fuel injection device is understood to mean that the opening and closing of the injection opening takes place by means of a displaceable valve member due to the hydraulic interaction of the fuel pressures in a nozzle space and in a control space.
  • a pressure reduction within the control chamber causes a stroke of the valve member.
  • the deflection of the valve member by an actuator take place.
  • a pressure-controlled fuel injection device In a pressure-controlled fuel injection device according to the invention, the pressure prevailing in the nozzle chamber of an injector fuel pressure, the valve member against the action of a closing force (spring) is moved, so that the injection port for injection of the fuel from the nozzle chamber is released into the cylinder.
  • the pressure at which fuel exits the die space into a cylinder is referred to as the injection pressure
  • a system pressure is understood to mean the pressure below which fuel is available within the fuel injector.
  • Fuel metering means to supply fuel to the nozzle space by means of a metering valve. In a combined fuel metering, a common valve is used to meter different injection pressures.
  • the injection pump and the injector form one unit.
  • Per cylinder such a unit is installed in the cylinder head and driven either directly via a plunger or indirectly via rocker arm of the engine camshaft.
  • the pump-line-nozzle-system (PLD) works according to the same procedure.
  • a high-pressure line leads here to the nozzle chamber or nozzle holder.
  • a pump-nozzle unit is known from DE 195 175 78 A1. At this Fuel injector system pressure is over a pressurizable Piston generated whose movement is controlled by a cam drive. A variable Fuel injection of different amounts for pre-, main and post injection is limited feasible by such a fuel injection device.
  • a Fuel injection device proposed. It will be one Reduction of pollutant exchange and a more flexible pre- and post-injection by means of a pump-nozzle unit or a pump-line-nozzle system. It creates a good small quantity capability in the pre-injection and when needed in the Nacheinspritzung, because this is controlled by a stroke with a low injection pressure.
  • the Pre- and post-injection is flexible and reproducible. It will be a good one hydraulic efficiency of the pressure ratio achieved when this within the Injector is arranged. On the formation of the course of injection can specifically influence be taken.
  • a stroke-controlled fuel injection device 1 promotes a Kraftstof functionpumpe 2 fuel 3 from a storage tank 4 via a feed line 5 to several, corresponding to the number of individual cylinders, projecting into the combustion chamber of the engine to be supplied pump-nozzle units 6 (injector).
  • pump-nozzle units 6 injector
  • only one of the pump-nozzle units 6 is located.
  • Each unit injector 6 is composed of a fuel compression device 7 and Means for injecting together.
  • a fuel compression device 7 For each engine cylinder is a pump-nozzle unit 6 in a cylinder head installed.
  • the fuel compression device 7 is either directly driven by a tappet or indirectly via rocker arm of an engine camshaft. Electronic controls allow the amount of fuel injected (Injection process) to influence targeted.
  • the fuel compression device 7 can fuel in a compression chamber. 8 compacted.
  • the fuel metering is via a 2/2-way valve 28.
  • By a Cross-sectional control of the valve 9, which initiates the pressure build-up, or the valve 28th a variable injection pressure can be realized by throttling.
  • the Fuel compression device 7 may be part of a per se known pump-nozzle unit (PDE) or a pump-line-nozzle-system (PLD).
  • PDE pump-nozzle unit
  • PLD pump-line-nozzle-system
  • the Fuel compression device 7 serves to generate a first lower System pressure.
  • a switchable hydraulic pressure booster unit 10 can over a bypass containing the check valve 12 are bypassed when fuel with a first system pressure to be injected.
  • For injection of fuel with a second higher system pressure includes the Pressure booster unit 10 a valve unit for pressure intensification control (3/2-way valve) 15, a check valve 12 and a pressure means 11 in the form of a displaceable piston element.
  • the pressure medium 11 can at one end with the help of Valve unit 15 are connected to a fuel pressure line, so that the Pressure medium 11 can be pressurized one end.
  • a differential space 10 ' is by means of a leakage line 13 depressurized, so that the pressure medium 11 to reduce the Volume of a pressure chamber 14 can be moved.
  • the pressure medium 11 is in Compression direction moves so that the fuel in the pressure chamber 14 located compressed and a control chamber 18 and a nozzle chamber 19 is supplied.
  • the Check valve 12 prevents the return of compressed fuel.
  • the injection takes place via a fuel metering with the help of one in one Guide bore axially displaceable piston-shaped valve member 20 with a conical Valve sealing surface 21 at one end, with which it has a valve seat surface on Injector housing of the injector unit 6 cooperates.
  • injection openings are provided at the valve seat surface of the Injector housing.
  • Within the nozzle chamber 19 is a in the opening direction of the valve member 20 facing pressure surface the pressure prevailing there exposed, which is supplied via the pressure line 17 to the nozzle chamber 19.
  • Coaxial to a compression spring 22 further engages the valve member 20, a plunger 23 which, with its the Valve sealing surface 21 facing away from end face 24 limits the control chamber 18.
  • the Control chamber 18 has an inlet from the fuel pressure connection with a first throttle 25th and a drain to a pressure relief line 26 with a second throttle 27, the through the 2/2-way valve 28 is controlled.
  • the nozzle chamber 19 is placed over an annular gap between the valve member 20 and the Guide bore continues to the valve seat surface of the injector. About the pressure in the Control chamber 18, the plunger 23 is pressurized in the closing direction.
  • the 2/2 and 3/2-way valves are solenoid-operated for opening or closing or switching operated.
  • the electromagnets are controlled by a control unit, the various operating parameters (engine speed, .%) of the supplied Monitor and process internal combustion engine.
  • piezo-actuator elements instead of the solenoid-controlled valve units, piezo-actuator elements (actuator, Actuator) are used, the necessary temperature compensation and possibly a have required force or displacement ratio.
  • Fuel under the first or second system pressure fills the nozzle space 19 and the control chamber 18.
  • the pressure are reduced in the control room 18, so that in the sequence of the opening direction on the Valve member 20 acting pressure in the nozzle chamber 19 in the closing direction on the valve member 20 acting pressure exceeds.
  • the valve sealing surface 21 lifts off from the valve seat surface and Fuel is injected.
  • the pressure relief process of the control room can be 18 and thus the stroke control of the valve member 20 via the dimensioning of the throttle 25th and the throttle 27 influence.
  • the end of the injection is by re-pressing the 2/2-way valve 28th introduced, which decouples the control chamber 19 again from the leakage line 13 so that in the control chamber 18, a pressure builds up again, which move the plunger 23 in the closing direction can.
  • a fuel injection device 50 according to FIG. 2 also has a pump-nozzle unit 51.
  • the primary system pressure is generated via the fuel compression device 52 and is activated by closing a 2/2-way valve 58.
  • a pressure booster unit 54 is activated with the aid of the 2/2-way valve 53.
  • the bypass around the pressure booster unit is then deactivated via the check valve 56.
  • the control of the injection by means of a 3/2-way valve 55 pressure controlled.
  • the lower system pressure may be used for a pilot injection and, if necessary, for a post-injection as well as for the formation of a boat injection. With open valves 58 and 53, the refilling of the pressure booster unit takes place.
  • the pressure buildup within a fuel injector 90 ( FIG. 4 ) is in turn controlled by a 2/2-way valve 91.
  • a second higher injection pressure can be generated via an actuatable by a 2/2-way valve pressure booster 93.
  • This pressure booster unit is bypassed by a bypass, so that an injection can be done with non-pressure translated fuel.
  • the bypass line is decoupled from a check valve 94.
  • the completion of the injection or the refilling of the pressure booster unit 93 is carried out by opening valve 91 and the valves 91 and 92.
  • With the help of the check valve 95 it is possible to maintain a pressure level beyond the delivery stroke of the fuel pressure generation out and thus a more flexible injection to realize.
  • For better storage of the pressurized fuel and an accumulator between the pressure build-up valve 91 and the nozzle chamber is conceivable.
  • a high-pressure line to the nozzle chamber can be at Figures 1 to 4 realize a pump-line-nozzle system.
  • the control valves and the Pressure booster unit can also be integrated in one unit or at any one Position be arranged between the injector and the pressure generation.

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)

Claims (1)

  1. Installation d'injection de carburant (1 ; 50 ; 71 ; 80 ; 90) comportant un ou plusieurs ensembles pompe-buse ou des systèmes pompe-conduite-buse (6 ; 51) suivant le nombre de cylindres, pour comprimer le carburant, l'installation d'injection de carburant (1 ; 50 ; 71 ; 80 ; 90) ayant une unité d'amplification de pression hydraulique (10 ; 40 ; 54 ; 62 ; 93) et une conduite d'alimentation en carburant pour contourner l'unité d'amplification de pression (10 ; 40 ; 54 ; 62 ; 93),
    caractérisée en ce que
    l'unité d'amplification de pression hydraulique (10 ; 40 ; 54 ; 62 ; 93) peut être branchée, avec une unité à soupape (15 ; 53 ; 60 ; 92) prévue pour commander l'amplification de pression.
EP00958209A 1999-08-20 2000-08-02 Dispositif d'injection de carburant Expired - Lifetime EP1123462B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19939429 1999-08-20
DE19939429A DE19939429A1 (de) 1999-08-20 1999-08-20 Kraftstoffeinspritzeinrichtung
PCT/DE2000/002579 WO2001014724A1 (fr) 1999-08-20 2000-08-02 Dispositif d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1123462A1 EP1123462A1 (fr) 2001-08-16
EP1123462B1 true EP1123462B1 (fr) 2005-03-30

Family

ID=7918963

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00958209A Expired - Lifetime EP1123462B1 (fr) 1999-08-20 2000-08-02 Dispositif d'injection de carburant

Country Status (6)

Country Link
US (1) US6513497B1 (fr)
EP (1) EP1123462B1 (fr)
JP (1) JP2003507649A (fr)
KR (1) KR20010083913A (fr)
DE (2) DE19939429A1 (fr)
WO (1) WO2001014724A1 (fr)

Families Citing this family (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19939423A1 (de) * 1999-08-20 2001-03-01 Bosch Gmbh Robert Kraftstoffeinspritzsystem für eine Brennkraftmaschine
JP2001323858A (ja) * 2000-05-17 2001-11-22 Bosch Automotive Systems Corp 燃料噴射装置
DE10055269B4 (de) * 2000-11-08 2005-10-27 Robert Bosch Gmbh Druckgesteuerter Injektor mit Druckübersetzung
DE10063545C1 (de) * 2000-12-20 2002-08-01 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung
DE10123775B4 (de) * 2001-05-16 2005-01-20 Robert Bosch Gmbh Kraftstoff-Einspritzvorrichtung für Brennkraftmaschinen, insbesondere Common-Rail-Injektor, sowie Kraftstoffsystem und Brennkraftmaschine
DE10123914B4 (de) * 2001-05-17 2005-10-20 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung mit Druckübersetzungseinrichtung und Druckübersetzungseinrichtung
KR100853894B1 (ko) * 2001-05-17 2008-08-25 로베르트 보쉬 게엠베하 연료 분사 장치
DE10132732A1 (de) * 2001-07-05 2003-01-23 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung
DE10146739A1 (de) * 2001-09-22 2003-04-10 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
DE10149004C1 (de) * 2001-10-04 2003-02-27 Bosch Gmbh Robert Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen
DE10158659A1 (de) * 2001-11-30 2003-06-12 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
DE10158951A1 (de) * 2001-12-03 2003-06-12 Daimler Chrysler Ag Mit Druckübersetzung arbeitendes Einspritzsystem
DE10209527A1 (de) * 2002-03-04 2003-09-25 Bosch Gmbh Robert Einrichtung zur druckmodulierten Formung des Einspritzverlaufes
DE10229419A1 (de) * 2002-06-29 2004-01-29 Robert Bosch Gmbh Druckübersetzter Kraftstoffinjektor mit schnellem Druckabbau bei Einspritzende
DE10229418A1 (de) * 2002-06-29 2004-01-29 Robert Bosch Gmbh Einrichtung zur Dämpfung des Nadelhubes an Kraftstoffinjektoren
JP4308487B2 (ja) * 2002-07-11 2009-08-05 株式会社豊田中央研究所 燃料噴射装置における燃料噴射方法
DE10238951A1 (de) * 2002-08-24 2004-03-11 Robert Bosch Gmbh Kraftstoffeinspritzeinrichtung
DE10315015B4 (de) * 2003-04-02 2005-12-15 Robert Bosch Gmbh Kraftstoffinjektor mit Druckverstärker und Servoventil mit optimierter Steuermenge
DE102004010760A1 (de) * 2004-03-05 2005-09-22 Robert Bosch Gmbh Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen mit Nadelhubdämpfung
FR2871197B1 (fr) * 2004-06-04 2006-07-28 Renault V I Sa Injecteur pompe
WO2006008727A1 (fr) * 2004-07-20 2006-01-26 Mazrek Ltd. Injecteur pompe a commande hydraulique avec amplification de pression a plusieurs phases pour moteurs a combustion interne
EP1717434A1 (fr) * 2005-04-28 2006-11-02 Delphi Technologies, Inc. Amélioration d'un système d'injection de carburant
ATE458910T1 (de) * 2005-06-28 2010-03-15 Renault Trucks Verbrennungsmotor umfassend mehrere kraftstoffeinspritzanordnungen
DE102005030220A1 (de) * 2005-06-29 2007-01-04 Robert Bosch Gmbh Injektor mit zuschaltbarem Druckübersetzer
US7293547B2 (en) * 2005-10-03 2007-11-13 Caterpillar Inc. Fuel injection system including a flow control valve separate from a fuel injector
US8100110B2 (en) * 2005-12-22 2012-01-24 Caterpillar Inc. Fuel injector with selectable intensification
DE102006039264A1 (de) * 2006-08-22 2008-02-28 Volkswagen Ag Kraftstoffeinspritzvorrichtung mit Druckverstärker
EP2410168A1 (fr) * 2010-07-23 2012-01-25 Wärtsilä Schweiz AG Distributeur de fluide et procédé de préparation d'un fluide de travail à l'aide d'un distributeur de fluide
DE102011005096A1 (de) * 2011-03-04 2012-09-06 Man Diesel & Turbo Se Verbrennungsmotor
DE102012204107A1 (de) 2012-03-15 2013-09-19 Robert Bosch Gmbh Dosiervorrichtung
DE102012214920A1 (de) * 2012-08-22 2014-02-27 Continental Automotive Gmbh Dämpfungsoberfläche an Ventilkomponenten
DE102014213182A1 (de) * 2013-09-13 2015-03-19 Ford Global Technologies, Llc Verfahren zum Steuern der Kraftstoffeinspritzung sowie Kraftstoffeinspritzsystem
DK179161B1 (en) 2016-05-26 2017-12-18 Man Diesel & Turbo Filial Af Man Diesel & Turbo Se Tyskland A large two-stroke compression-ignited internal combustion engine with fuel injection system for low flashpoint fuel and a fuel valve therefore
GB2567011B (en) * 2017-10-02 2021-01-20 Caterpillar Motoren Gmbh & Co Fuel injection system for engine system

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4142497A (en) * 1975-11-06 1979-03-06 Allied Chemical Corporation Fuel pressure booster and regulator
US4649887A (en) * 1984-01-12 1987-03-17 Nippon Soken, Inc. Pump for supplying pressurized fuel to fuel injector of internal combustion engine
US4674448A (en) * 1985-07-04 1987-06-23 Sulzer Brothers Limited Fuel injection system for a multi-cylinder reciprocating internal combustion engine
DE3629754C2 (de) * 1986-09-01 1994-07-14 Bosch Gmbh Robert Vorrichtung zur Erzeugung von Voreinspritzungen bei Pumpedüsen
DE4118236C2 (de) * 1990-06-06 2000-02-17 Avl Verbrennungskraft Messtech Einspritzsystem für Brennkraftmaschinen
US5355856A (en) * 1992-07-23 1994-10-18 Paul Marius A High pressure differential fuel injector
GB2289313B (en) * 1994-05-13 1998-09-30 Caterpillar Inc Fluid injector system
JP2885076B2 (ja) * 1994-07-08 1999-04-19 三菱自動車工業株式会社 蓄圧式燃料噴射装置
DE19544241A1 (de) * 1994-12-10 1996-06-13 Volkswagen Ag Einrichtung zur geräuscharmen Hochdruckeinspritzung von Kraftstoff
US5878720A (en) * 1997-02-26 1999-03-09 Caterpillar Inc. Hydraulically actuated fuel injector with proportional control
US6076504A (en) * 1998-03-02 2000-06-20 Cummins Engine Company, Inc. Apparatus for diagnosing failures and fault conditions in a fuel system of an internal combustion engine
DE19910970A1 (de) * 1999-03-12 2000-09-28 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung

Also Published As

Publication number Publication date
WO2001014724A1 (fr) 2001-03-01
DE19939429A1 (de) 2001-03-01
US6513497B1 (en) 2003-02-04
JP2003507649A (ja) 2003-02-25
DE50009917D1 (de) 2005-05-04
KR20010083913A (ko) 2001-09-03
EP1123462A1 (fr) 2001-08-16

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