EP1273797A2 - Dispositif d'injection de combustible - Google Patents

Dispositif d'injection de combustible Download PDF

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Publication number
EP1273797A2
EP1273797A2 EP02011711A EP02011711A EP1273797A2 EP 1273797 A2 EP1273797 A2 EP 1273797A2 EP 02011711 A EP02011711 A EP 02011711A EP 02011711 A EP02011711 A EP 02011711A EP 1273797 A2 EP1273797 A2 EP 1273797A2
Authority
EP
European Patent Office
Prior art keywords
pressure
injector
injection device
fuel
valve
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP02011711A
Other languages
German (de)
English (en)
Other versions
EP1273797B1 (fr
EP1273797A3 (fr
Inventor
Hans-Christoph Magel
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 EP1273797A2 publication Critical patent/EP1273797A2/fr
Publication of EP1273797A3 publication Critical patent/EP1273797A3/fr
Application granted granted Critical
Publication of EP1273797B1 publication Critical patent/EP1273797B1/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
    • F02M57/023—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
    • 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
    • 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
    • F02M55/02—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
    • F02M57/00—Fuel-injectors combined or associated with other devices
    • F02M57/02—Injectors structurally combined with fuel-injection pumps
    • 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
    • F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
    • F02M59/366—Valves being actuated electrically
    • 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
    • F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
    • F02M59/46—Valves
    • F02M59/462—Delivery 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
    • F02M63/0003—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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0003—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure
    • F02M63/0005—Fuel-injection apparatus having a cyclically-operated valve for connecting a pressure source, e.g. constant pressure pump or accumulator, to an injection valve held closed mechanically, e.g. by springs, and automatically opened by fuel pressure using valves actuated by fluid pressure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • 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
    • F02M2200/40—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
    • 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
    • F02M45/00—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship
    • F02M45/12—Fuel-injection apparatus characterised by having a cyclic delivery of specific time/pressure or time/quantity relationship providing a continuous cyclic delivery with variable pressure

Definitions

  • the invention relates to a fuel injection device according to the preamble of claim 1.
  • the fuel injection device according to the invention can be designed 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 with the aid of a displaceable nozzle needle due to the hydraulic interaction of the fuel pressures in a nozzle chamber and in a control chamber.
  • a pressure drop within the control room causes the nozzle needle to lift.
  • the nozzle needle can be deflected by an actuator (actuator, actuator).
  • a pressure-controlled fuel injection device In a pressure-controlled fuel injection device according to the invention, the fuel pressure prevailing in the nozzle chamber of an injector moves the nozzle needle against the action of a closing force (spring), so that the injection opening is released for injecting the fuel from the nozzle chamber into the cylinder.
  • the pressure at which fuel emerges from the nozzle chamber into a cylinder is referred to as the injection pressure
  • a system pressure is understood to mean the pressure at which fuel is available or is stored within the fuel injection device.
  • Fuel metering means supplying fuel to the nozzle chamber by means of a metering valve. In the case of a combined fuel metering, a common valve is used to meter different injection pressures.
  • PDE pump-nozzle unit
  • the injection pump and the injector form one unit.
  • Such a unit is installed in the cylinder head for each cylinder and is driven by the engine camshaft either directly via a tappet or indirectly via rocker arms.
  • the pump line-nozzle system (PLD) works according to the same procedure.
  • a high-pressure line leads to the nozzle area or nozzle holder.
  • PDE or PLD are used. Furthermore it has proved to be advantageous when the injection pressure depends on the speed and load of the engine is independent and can be set variably in the map. Multiple injection is also advantageous. This is where common rail systems come from (CRS) are used.
  • CRS common rail systems come from
  • a fuel injector Claim 1 proposed.
  • a pressure accumulator in connection with A stroke-controlled injector ensures that a Injection can take place. This is e.g. for the regeneration of filter and Catalyst systems important.
  • the invention Fuel injector capable of a pre-injection and a To represent post-injection. These injections can be done outside of Cam hubs lie.
  • PDE / PLD elements are used for the pressure build-up, to take advantage of high pressure and linear pressure build-up. at The injection pressure of the fuel injection device according to the invention can be regulated and can be adapted to the needs of the engine in the map. to Filling the pressure accumulator can reduce the construction of the apparatus through which PDE / PLD elements can be achieved.
  • the filling valve is already in the system existing check valve is combined, so that the equipment effort is not increased unnecessarily.
  • the filling valve can also be used as a separate one Valve can be executed or combined with another valve of the system and operated by an actuator if necessary.
  • a pump-nozzle unit (PDE) or a pump-line-nozzle system (PLD) is assigned to each cylinder.
  • Each pump-nozzle unit is composed of a pump element 1 and an injector 2 .
  • One pump-nozzle unit is installed in a cylinder head for each engine cylinder.
  • the pump element 1 is driven either directly via a tappet or indirectly via a rocker arm from an engine camshaft.
  • Electronic control devices allow the amount of fuel injected (injection process) to be influenced in a targeted manner.
  • a low-pressure pump 4 delivers fuel 5 from a storage tank 6 via a delivery line 7 to the pump elements 1.
  • a control valve 8 serves to fill a pump chamber 9 of the pump elements. The high pressure is generated by closing the control valve during the cam lift. The pressure buildup thus begins and the pressurized fuel is passed to the injector 2 via a check valve 10 .
  • the injection takes place via a fuel metering device with the aid of a nozzle needle 11 which can be axially displaced in a guide bore and has a conical valve sealing surface 12 at one end, with which it cooperates with a valve seat surface on the injector housing.
  • Injection openings are provided on the valve seat surface of the injector housing.
  • a nozzle chamber 13 and a control chamber 14 are formed.
  • Within the nozzle space 13 a pressure surface pointing in the opening direction of the nozzle needle 11 is exposed to the pressure prevailing there, which is supplied to the nozzle space 13 via a pressure line 15 .
  • a plunger 17 Coaxially with a compression spring 16 , a plunger 17 also acts on the nozzle needle 11, which delimits the control chamber 14 with its end face 18 facing away from the valve sealing surface 12.
  • the control chamber 14 From the fuel pressure connection, the control chamber 14 has an inlet with a throttle 19 and an outlet to a pressure relief line 20 , which is controlled by a valve unit 21 .
  • the plunger 17 is pressurized in the closing direction by the pressure in the control chamber 14.
  • the valve unit 21 When the valve unit 21 is actuated, the pressure in the control chamber 14 can be reduced, so that as a result the pressure force acting on the nozzle needle 11 in the opening direction exceeds the pressure force acting on the nozzle needle 11 in the closing direction.
  • the valve sealing surface 12 lifts off the valve seat surface and fuel is injected.
  • the pressure relief process of the control chamber 14 and thus the stroke control of the nozzle needle 11 can be influenced by the dimensioning of the first throttle 19 and the second throttle 20.
  • the end of the injection is initiated by renewed actuation (closing) of the valve unit 21, which decouples the control chamber 14 from a leakage line 22 again, so that a pressure builds up again in the control chamber 14 which can move the nozzle needle 11 in the closing direction.
  • the injector 2 is connected via a check valve 23 and a throttle 24 to a central pressure accumulator 25 provided for all injectors.
  • the pressure accumulator 25 is filled via the throttle 24 during the injection. The amount of expansion of fuel that occurs when the fuel is released from the injection pressure to the rail pressure in the injector area is also supplied to the pressure accumulator 25 via the throttle 24.
  • the pressure accumulator 25 can use the injector 2 independently of the pump element 1 Supply fuel. It is always an injection, a flexible one Multiple injection and injection course shaping possible.
  • the control times of the valve unit 21 and the control valve 8 can be varied influence the course of the injection pressure in many ways: for example, one Boat injection injection possible by first in the boot phase with rail pressure is injected. Then the pressure build-up in the pump chamber 8 during the Injection controlled and there is a pressure build-up and a second Injection phase with high pressure. A rectangular injection course will generated by activating the pressure build-up first and the injector 2 after Pressure buildup is controlled with respect to the injection.
  • the injection pressure can be adapted to the needs of the engine become. This can be done in different ways: during injection the injector remains for some time after the start of pressure build-up closed. As a result, a high pressure is accumulated, under which the Injection takes place. However, boot injection is no longer possible.
  • the Rail pressure can be increased, whereby a higher basic pressure is set. This shifts the entire injection to a higher pressure level, the Possibility of shaping the injection course, e.g. a boat injection, is retained.
  • a local pressure accumulator in the injector 2 or an increased injector / line volume can be used to increase the discharge quantity.
  • a separate high-pressure pump 26 FIG. 2 ) can also be provided in the case of a fuel injection device 27 .
  • FIG. 3 to 6 show that instead of the throttle 24 used for example in the fuel injection device 3 (FIG. 1), a combined filling valve / check valve can be formed in a fuel injection device.
  • FIG. 3 shows a fuel injection device 28 with a pump element 29, a control valve 30 and an injector 31, comparable to the fuel injection device 3 .
  • the injector 31 is connected to a pressure accumulator 33 via a combined filling valve / check valve 32 .
  • the filling valve / check valve 32 regulates the connection from the injector 31 to the pressure accumulator 33 .
  • the filling valve / check valve 32 is in a first switching position.
  • the flow connection from the pump element to the injector is interrupted and the pressure accumulator 33 supplies the injector 31 with fuel of defined pressure.
  • the filling valve / check valve is located when the pump elements are conveyed 32 in a second switching position.
  • the flow connection from the pressure accumulator to the injector is interrupted and the flow connection from the pump element opened to the injector 31.
  • the filling valve / check valve 32 has a ball seat 34 for the check valve, which opens when the pump is pumped.
  • a slide seal is provided for the connection to the pressure accumulator 33, which is closed when the ball seat is open.
  • FIG. 4 shows a further embodiment of a combined filling valve / check valve 35 of a fuel injector 36.
  • the check valve is designed as a conical seat 37 .
  • the valve piston is opened, the flat seat 38 is closed and the connection to the pressure accumulator is thus interrupted.
  • a filling valve / check valve 39 of a fuel injection device 40 is formed with a common valve ball 41 for the filling valve and the / check valve 39.
  • the valve ball 41 is opened, the valve seat 42 is released and the valve seat 43 is closed.
  • a throttle 44 of a fuel injection device 45 is provided in order to influence the pressure build-up after pump element delivery has ended (FIG. 6). After pump element delivery has ended, the pressure drops slowly. Post-injection at high pressure can be implemented during the pressure reduction. The post-injection can lie outside the cam delivery area. Pressure peaks between main injection and post-injection can thus be avoided, which arise when the nozzle needle moves hydraulically controlled from the open to the closed position during pump element delivery.
  • a check valve 46 serves to supply the injector with fuel pressure from the pressure accumulator without throttling.
  • the check valve 46 which can be placed anywhere between the pump element and the injector, can also be arranged directly between the pressure accumulator and the filling valve / check valve 39.
  • the injection process can be influenced by varying the actuation times of a valve unit 47 and a control valve 48 .

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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)
EP20020011711 2001-07-05 2002-05-25 Dispositif d'injection de combustible Expired - Lifetime EP1273797B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10132732 2001-07-05
DE2001132732 DE10132732A1 (de) 2001-07-05 2001-07-05 Kraftstoffeinspritzeinrichtung

Publications (3)

Publication Number Publication Date
EP1273797A2 true EP1273797A2 (fr) 2003-01-08
EP1273797A3 EP1273797A3 (fr) 2005-01-19
EP1273797B1 EP1273797B1 (fr) 2008-07-02

Family

ID=7690798

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020011711 Expired - Lifetime EP1273797B1 (fr) 2001-07-05 2002-05-25 Dispositif d'injection de combustible

Country Status (3)

Country Link
EP (1) EP1273797B1 (fr)
JP (1) JP3887583B2 (fr)
DE (2) DE10132732A1 (fr)

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1359316A3 (fr) * 2002-05-03 2003-12-03 Delphi Technologies, Inc. Système d'injection de carburant
WO2004070201A1 (fr) * 2003-01-15 2004-08-19 Robert Bosch Gmbh Systeme d'injection de carburant pour moteur a combustion interne
WO2005124144A1 (fr) * 2004-06-04 2005-12-29 Renault Trucks Injecteur pompe
WO2005124145A1 (fr) * 2004-06-15 2005-12-29 Robert Bosch Gmbh Dispositif d'injection de carburant
FR2872224A1 (fr) * 2004-06-29 2005-12-30 Renault Sas Dispositif d'injection de carburant sous pression pour un moteur a combustion interne
WO2006013151A1 (fr) * 2004-08-03 2006-02-09 Robert Bosch Gmbh Procede et dispositif pour la reduction de pression de rampe dans un systeme d'injection a rampe d'alimentation commune
EP1657430A1 (fr) * 2004-11-12 2006-05-17 C.R.F. Società Consortile per Azioni Système d'injection de carburant avec volume accumulateur pour un moteur à combustion interne
WO2007055805A1 (fr) * 2005-11-09 2007-05-18 Caterpillar Inc. Systeme a combustible a sources multiples pour injection a pression variable
RU2302550C2 (ru) * 2002-03-26 2007-07-10 Вольво Ластвагнар Аб Система впрыска топлива (варианты)
WO2007114750A1 (fr) * 2006-03-30 2007-10-11 Volvo Lastvagnar Ab Système d'injection de carburant
WO2008009974A3 (fr) * 2006-07-21 2008-03-06 Delphi Tech Inc Système d'injection de carburant
US7353800B2 (en) 2006-05-24 2008-04-08 Caterpillar Inc. Multi-source fuel system having grouped injector pressure control
US7392791B2 (en) 2006-05-31 2008-07-01 Caterpillar Inc. Multi-source fuel system for variable pressure injection
US7431017B2 (en) 2006-05-24 2008-10-07 Caterpillar Inc. Multi-source fuel system having closed loop pressure control
CN102900576A (zh) * 2012-10-22 2013-01-30 哈尔滨工程大学 具有两级增压活塞的电控共轨喷油系统
EP3578800A2 (fr) * 2018-06-07 2019-12-11 Caterpillar Motoren GmbH & Co. KG Système d'injection de carburant, pompe à carburant et piston

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE488690T1 (de) * 2005-07-18 2010-12-15 Ganser Hydromag Speichereinspritzsystem für brennkraftmaschine
DE102008051931A1 (de) 2008-10-16 2010-04-22 Continental Automotive Gmbh Einspritzanlage für eine Brennkraftmaschine

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19910970A1 (de) * 1999-03-12 2000-09-28 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung
DE19939419A1 (de) * 1999-08-20 2001-03-01 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung
DE19939428A1 (de) * 1999-08-20 2001-03-01 Bosch Gmbh Robert Verfahren und Vorrichtung zur Durchführung einer Kraftstoffeinspritzung
DE19939429A1 (de) * 1999-08-20 2001-03-01 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung

Cited By (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2302550C2 (ru) * 2002-03-26 2007-07-10 Вольво Ластвагнар Аб Система впрыска топлива (варианты)
WO2003093671A3 (fr) * 2002-05-03 2004-11-11 Delphi Tech Inc Systeme d'injection de carburant
EP1359316A3 (fr) * 2002-05-03 2003-12-03 Delphi Technologies, Inc. Système d'injection de carburant
US7047941B2 (en) 2002-05-03 2006-05-23 Delphi Technologies, Inc. Fuel injection system
WO2004070201A1 (fr) * 2003-01-15 2004-08-19 Robert Bosch Gmbh Systeme d'injection de carburant pour moteur a combustion interne
US7252070B2 (en) 2003-01-15 2007-08-07 Robert Bosch Gmbh Fuel injection device for an internal combustion engine
WO2005124144A1 (fr) * 2004-06-04 2005-12-29 Renault Trucks Injecteur pompe
WO2005124145A1 (fr) * 2004-06-15 2005-12-29 Robert Bosch Gmbh Dispositif d'injection de carburant
FR2872224A1 (fr) * 2004-06-29 2005-12-30 Renault Sas Dispositif d'injection de carburant sous pression pour un moteur a combustion interne
WO2006013151A1 (fr) * 2004-08-03 2006-02-09 Robert Bosch Gmbh Procede et dispositif pour la reduction de pression de rampe dans un systeme d'injection a rampe d'alimentation commune
US7444988B2 (en) 2004-11-12 2008-11-04 C.R.F. Societa Consortile Per Azioni Accumulation-volume fuel injection system for an internal-combustion engine
US7980223B2 (en) 2004-11-12 2011-07-19 C.R.F. Societa Consortile Per Azioni Accumulation-volume fuel injection system for an internal-combustion engine
EP1657430A1 (fr) * 2004-11-12 2006-05-17 C.R.F. Società Consortile per Azioni Système d'injection de carburant avec volume accumulateur pour un moteur à combustion interne
WO2007055805A1 (fr) * 2005-11-09 2007-05-18 Caterpillar Inc. Systeme a combustible a sources multiples pour injection a pression variable
CN101305180B (zh) * 2005-11-09 2011-02-16 卡特彼勒公司 用于可变压力喷射的多源燃料系统
US7398763B2 (en) 2005-11-09 2008-07-15 Caterpillar Inc. Multi-source fuel system for variable pressure injection
US7730876B2 (en) 2006-03-30 2010-06-08 Volvo Lastvagnar Ab Fuel injection system
WO2007114750A1 (fr) * 2006-03-30 2007-10-11 Volvo Lastvagnar Ab Système d'injection de carburant
CN101400886B (zh) * 2006-03-30 2010-09-08 沃尔沃拉斯特瓦格纳公司 燃料喷射系统
US7353800B2 (en) 2006-05-24 2008-04-08 Caterpillar Inc. Multi-source fuel system having grouped injector pressure control
US7431017B2 (en) 2006-05-24 2008-10-07 Caterpillar Inc. Multi-source fuel system having closed loop pressure control
US7392791B2 (en) 2006-05-31 2008-07-01 Caterpillar Inc. Multi-source fuel system for variable pressure injection
WO2008009974A3 (fr) * 2006-07-21 2008-03-06 Delphi Tech Inc Système d'injection de carburant
US8113175B2 (en) * 2006-07-21 2012-02-14 Delphi Technologies Holding S.Arl Fuel injection system
CN102900576A (zh) * 2012-10-22 2013-01-30 哈尔滨工程大学 具有两级增压活塞的电控共轨喷油系统
EP3578800A2 (fr) * 2018-06-07 2019-12-11 Caterpillar Motoren GmbH & Co. KG Système d'injection de carburant, pompe à carburant et piston

Also Published As

Publication number Publication date
EP1273797B1 (fr) 2008-07-02
JP2003042040A (ja) 2003-02-13
JP3887583B2 (ja) 2007-02-28
DE10132732A1 (de) 2003-01-23
DE50212423D1 (de) 2008-08-14
EP1273797A3 (fr) 2005-01-19

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