EP1273797B1 - Dispositif d'injection de combustible - Google Patents

Dispositif d'injection de combustible Download PDF

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Publication number
EP1273797B1
EP1273797B1 EP20020011711 EP02011711A EP1273797B1 EP 1273797 B1 EP1273797 B1 EP 1273797B1 EP 20020011711 EP20020011711 EP 20020011711 EP 02011711 A EP02011711 A EP 02011711A EP 1273797 B1 EP1273797 B1 EP 1273797B1
Authority
EP
European Patent Office
Prior art keywords
pressure
injector
valve
fuel
injection
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
EP20020011711
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German (de)
English (en)
Other versions
EP1273797A2 (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 patent claim 1.
  • 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 nozzle needle 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 nozzle needle.
  • the deflection of the nozzle needle by an actuator actuator, actuator
  • the nozzle needle is moved by the force prevailing in the nozzle chamber of an injector fuel pressure against the action of a closing force (spring), so that the injection port for injection of the fuel from the nozzle chamber is released into the cylinder.
  • injection pressure The pressure at which fuel exits the die space into a cylinder
  • system pressure is understood to mean the pressure below which fuel is available within the fuel injector.
  • Fuel metering means supplying fuel to the nozzle chamber 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 in the same way.
  • a high-pressure line leads here to the nozzle chamber or nozzle holder.
  • the pamphlets DE 199 39 429 A1 and DE 199 10 970 A1 each discloses a fuel injector of an internal combustion engine with depending on the number of cylinders at least one local, each injector associated pump element of a pump-line-nozzle system for compression of the fuel to which the injectors are connected.
  • a fuel injector according to claim 1 is proposed.
  • a pressure accumulator in conjunction with a stroke-controlled injector ensures that an injection can take place at any time. This is e.g. important for the regeneration of filter and catalyst systems.
  • the fuel injection device according to the invention is able to represent a pre-injection and a post-injection. These injections can be outside the cam lift.
  • PDE / PLD elements are used to take advantage of the high pressure and linear pressure build-up.
  • the single-point pressure can be regulated and can be adapted in the characteristic map to the requirements of the engine.
  • a filling of the pressure accumulator by the PDE / PLD elements can be achieved.
  • a loss occurs.
  • a filling valve is proposed, which during the pressure build-up by the pump elements (ie also during the injection) the connection of the pressure accumulator to the injector separates. After completion of the promotion of the pump elements, the connection of the accumulator is restored to the injector.
  • the filling of the pressure accumulator is achieved exclusively from the amount of expansion of the injector volume, which occurs as a loss amount in the system.
  • the filling valve is combined with the check valve already present in the system, so that the expenditure on equipment is not unnecessarily increased.
  • the filling valve can also be designed as a separate valve or combined with another valve of the system and actuated by an actuator if necessary.
  • Each cylinder is assigned a pump-nozzle unit (PDE) or a pump-line-nozzle-system (PLD).
  • PDE pump-nozzle unit
  • PLD pump-line-nozzle-system
  • Each pump-nozzle unit is composed of a pump element 1 and an injector 2 .
  • a unit injector unit is installed in a cylinder head.
  • the pump element 1 is driven either directly via a plunger or indirectly via rocker arm of an engine camshaft.
  • Electronic control devices make it possible to selectively influence the amount of injected fuel (injection process).
  • 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. High pressure generation occurs by closing the control valve during the cam lift. This begins the pressure build-up and the pressurized fuel is passed through a check valve 10 to the injector 2 .
  • the injection takes place via a fuel metering with the aid of a guide needle axially displaceable nozzle needle 11 with a conical valve sealing surface 12 at one end, with which it cooperates with a valve seat surface on the injector.
  • a guide needle axially displaceable nozzle needle 11 with a conical valve sealing surface 12 at one end, with which it cooperates with a valve seat surface on the injector.
  • a pressure surface pointing in the opening direction of the nozzle needle 11 is exposed to the pressure prevailing there, which pressure is supplied to the nozzle chamber 13 via a pressure line 15 .
  • Coaxial with a compression spring 16 also engages the nozzle needle 11, a plunger 17 , which limits the control chamber 14 with its valve sealing surface 12 facing away from the end face 18 .
  • the control chamber 14 has from the fuel pressure port ago an inlet with a throttle 19 and a drain to a pressure relief line 20 , which by a Valve unit 21 is controlled.
  • the plunger 17 is pressurized in the closing direction.
  • the pressure in the control chamber 14 can be reduced, so that as a result the pressure force acting in the opening direction on the nozzle needle 11 in the nozzle chamber 13 exceeds the pressure force acting in the closing direction on the nozzle needle 11.
  • the valve sealing surface 12 lifts off the valve seat surface and fuel is injected. In this case, the pressure relief process of the control chamber 14 and thus the stroke control of the nozzle needle 11 via the dimensioning of the first throttle 19 and the second throttle 20 can be influenced.
  • the end of the injection is initiated by renewed actuation (closing) of the valve unit 21, which decouples the control chamber 14 again from a leakage line 22 , so that a pressure builds up in the control chamber 14 again, 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 with a central pressure accumulator 25 provided for all injectors.
  • the pressure accumulator 25 is filled via the throttle 24 during the injection. Also, the relaxation amount of fuel that accumulates during the expansion of the fuel in the injector from the injection pressure to rail pressure, the pressure accumulator 25 via the throttle 24 is supplied.
  • the pressure accumulator 25 can supply the injector 2 with fuel independently of the pump element 1. Injection, flexible multiple injection, and injection molding are possible at all times. By varying the activation times of the valve unit 21 and of the control valve 8, the injection pressure curve can be varied: For example, a boat injection injection is possible by first injected with rail pressure in the boot phase. Then, the pressure buildup in the pump chamber 8 is driven during the injection and there is a pressure build-up and a second injection phase with high pressure. A rectangular injection profile is generated by first activating the pressure build-up and activating the injector 2 with respect to the injection after the pressure has been built up.
  • the injection pressure can be adapted to the needs of the engine. This can be done in different ways: During injection, the injector remains closed for some time after the start of pressure build-up. As a result, a high pressure is accumulated under which then the injection takes place. However, boot injection is no longer possible. The rail pressure can be increased, which sets a higher base pressure. This shifts the overall injection to a higher pressure level, with the possibility of injection rate shaping, e.g. a boot injection, is preserved.
  • a local pressure accumulator in the injector 2 or an increased injector / line volume can be used in order to increase the amount of stowage.
  • a separate high-pressure pump 26 may be provided at a fuel injector 27 .
  • a combined fill valve / check valve may be formed in a fuel injector.
  • a fuel injection device 28 having a pump element 29, a control valve 30 and an injector 31, comparable to the fuel injection device 3 .
  • the injector 31 is connected via a combined filling valve / check valve 32 to a pressure accumulator 33.
  • the fill valve / check valve 32 controls the connection from the injector 31 to the pressure accumulator 33 .
  • the fill 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-defined pressure.
  • the filling valve / check valve 32 When conveying the pump elements, the filling valve / check valve 32 is in a second switching position. The flow connection from the accumulator to the injector is interrupted and the flow connection from the pump element to the injector 31 is opened.
  • the fill valve / check valve 32 has a ball seat 34 for the check valve, which opens when the pump is pumped.
  • a slide seal for connection to the pressure accumulator 33 is provided, 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 Kraftstoffeinspitzeinraum 36.
  • the check valve is designed as a conical seat 37 .
  • the valve piston is opened, the flat seat 38 is closed and thus the connection to the pressure accumulator is interrupted.
  • a fill valve / check valve 39 of a fuel injector 40 is formed with a common valve ball 41 for the fill valve and the / check valve 39.
  • the valve seat 42 is released and the valve seat 43 is closed.
  • a throttle 44 of a fuel injection device 45 is provided ( Fig. 6 ). After completion of the pump element promotion, a slow pressure reduction occurs. During the pressure reduction, a post-injection with high pressure can be realized. The post-injection may be outside the cam feed area. This pressure peaks between main injection and post-injection can be avoided, which arise when the nozzle needle moves hydraulically controlled during the pump element conveying from the open to the closed position.
  • a check valve 46 serves to supply the injector unthrottled with fuel pressure from the pressure accumulator.
  • the non-return valve 46 which can be placed at any point between the pump element and the injector can also be arranged directly between the pressure accumulator and the filling valve / check valve 39. Through a variation of Activation times of a valve unit 47 and a control valve 48 can influence the course of injection.

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 (5)

  1. Installation d'injection de carburant (3 ; 27) d'un moteur à combustion interne comportant selon le nombre de cylindres, au moins un élément de pompe (1), local, associé à chaque injecteur (2), d'une unité pompe-buse ou d'un système pompe-conduite-buse pour comprimer le carburant ainsi qu'un accumulateur de pression (25), central, auxquels sont reliés les injecteurs (2),
    l'élément de pompe (1) étant relié par une conduite de pression (15) à une chambre de commande (14) et à une chambre de buse (13) de l'injecteur (2),
    caractérisée en ce que
    pour relier les injecteurs (2) à l'accumulateur de pression (25) et à l'élément de pompe (1) il est prévu un clapet anti-retour (23, 46) et un organe d'étranglement (24, 44) en parallèle à celui-ci entre les injecteurs (2) et l'accumulateur de pression (25) et une vanne de remplissage (32, 35, 39) en forme de vanne à 3/2 voies.
  2. Installation d'injection de carburant selon la revendication 1,
    caractérisée en ce que
    l'accumulateur de pression (25) est rempli avec du carburant comprimé par l'élément de pompe (1).
  3. Installation d'injection de carburant selon la revendication 1 ou 2,
    caractérisée en ce que
    la vanne de remplissage (32 ; 35 ; 39) coupe la liaison entre l'injecteur (2) et l'accumulateur de pression (25) pendant le refoulement par l'élément de pompe (1).
  4. Installation d'injection de carburant selon l'une des revendications précédentes,
    caractérisée en ce que
    la vanne de remplissage (32 ; 35 ; 39) est réalisée sous la forme d'une vanne de remplissage/vanne d'arrêt, combinée.
  5. Installation d'injection de carburant selon la revendication 4,
    caractérisée en ce que
    la vanne combinée/vanne de remplissage/vanne d'arrêt (32 ; 35 ; 39) relie l'injecteur (2) à l'accumulateur de pression (25) dans la première position de commutation et l'injecteur (2) à l'élément de pompe (1) dans une seconde position de commutation.
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 EP1273797A2 (fr) 2003-01-08
EP1273797A3 EP1273797A3 (fr) 2005-01-19
EP1273797B1 true 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)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1359316B1 (fr) * 2002-05-03 2007-04-18 Delphi Technologies, Inc. Système d'injection de carburant
DE10301194A1 (de) * 2003-01-15 2004-07-29 Robert Bosch Gmbh Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
FR2871197B1 (fr) * 2004-06-04 2006-07-28 Renault V I Sa Injecteur pompe
DE102004028886A1 (de) * 2004-06-15 2006-01-05 Robert Bosch Gmbh Kraftstoffeinspritzeinrichtung
FR2872224A1 (fr) * 2004-06-29 2005-12-30 Renault Sas Dispositif d'injection de carburant sous pression pour un moteur a combustion interne
DE102004037538A1 (de) * 2004-08-03 2006-02-23 Robert Bosch Gmbh Verfahren und Vorrichtung für den Raildruckabbau bei einem Common Rail Einspritzsystem
ATE394592T1 (de) * 2004-11-12 2008-05-15 Fiat Ricerche Ein kraftstoffeinspritzsystem mit akkumulatorvolumen für eine brennkraftmaschine
BRPI0613413B1 (pt) * 2005-07-18 2019-08-27 Ganser Hydromag sistema de injeção de acumulador para um motor de combustão interna
US7398763B2 (en) * 2005-11-09 2008-07-15 Caterpillar Inc. Multi-source fuel system for variable pressure injection
BRPI0709255A2 (pt) 2006-03-30 2011-06-28 Volvo Lastvagnar Ab sistema de injeção de combustìvel
US7392791B2 (en) 2006-05-31 2008-07-01 Caterpillar Inc. Multi-source fuel system for variable pressure injection
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
GB0614537D0 (en) * 2006-07-21 2006-08-30 Delphi Tech Inc Fuel Injection System
DE102008051931A1 (de) 2008-10-16 2010-04-22 Continental Automotive Gmbh Einspritzanlage für eine Brennkraftmaschine
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

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
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
DE19939419A1 (de) * 1999-08-20 2001-03-01 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung

Also Published As

Publication number Publication date
DE10132732A1 (de) 2003-01-23
EP1273797A2 (fr) 2003-01-08
EP1273797A3 (fr) 2005-01-19
DE50212423D1 (de) 2008-08-14
JP3887583B2 (ja) 2007-02-28
JP2003042040A (ja) 2003-02-13

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