EP1260702B1 - Système d'injection de carburant d'un moteur à combustion interne - Google Patents

Système d'injection de carburant d'un moteur à combustion interne Download PDF

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Publication number
EP1260702B1
EP1260702B1 EP02008632A EP02008632A EP1260702B1 EP 1260702 B1 EP1260702 B1 EP 1260702B1 EP 02008632 A EP02008632 A EP 02008632A EP 02008632 A EP02008632 A EP 02008632A EP 1260702 B1 EP1260702 B1 EP 1260702B1
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EP
European Patent Office
Prior art keywords
valve
pressure
control
space
fuel
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
EP02008632A
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German (de)
English (en)
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EP1260702A3 (fr
EP1260702A2 (fr
Inventor
Nestor Rodriguez-Amaya
Roger Potschin
Juergen Gruen
Ulrich Projahn
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Robert Bosch GmbH
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Robert Bosch GmbH
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Publication date
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Publication of EP1260702A3 publication Critical patent/EP1260702A3/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
    • F02M63/0012—Valves
    • F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
    • F02M63/0045—Three-way 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
    • 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
    • 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
    • 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

Definitions

  • the invention relates to a fuel injection device for Internal combustion engine according to the preamble of claim 1.
  • Such a fuel injection device is described by DE-A1-4118236 known.
  • This fuel injection device has for each cylinder of the internal combustion engine on a fuel pump, the one by the internal combustion engine in a reciprocating motion driven pump piston having a pump working space limited, the fuel from a fuel tank is supplied and connected to a fuel injection valve is.
  • the fuel injection valve has an injection valve member , is controlled by the at least one injection port and that by the one in a connected to the pump working space Pressure chamber prevailing pressure against a closing force in one Opening direction is movable. It is a first electric controlled control valve provided by a connection of the Pump work space is controlled with a discharge space.
  • first control valve Between the pump working space and the first control valve is a arranged to the first control valve opening pressure-retaining valve, by the one opposite to the pressure prevailing in the discharge space increased pressure is maintained. It's also a second one electrically controlled control valve provided by the likewise a connection of the pump work space with a discharge space is controlled.
  • first control valve When the first control valve is open and the second Control valve is closed, it is a fuel injection with the pressure level determined by the pressure holding valve. If both the first control valve and the second control valve is closed, so is a fuel injection with the by the stroke of the pump piston certain pressure curve.
  • the Opening and closing movement of the injection valve member of Fuel injector is controlled by the in the pump workspace controlled pressure prevailing, wherein the injection valve member opens when the force generated by the pressure on this is greater than the bias of a closing spring.
  • the one in the pump workroom prevailing pressure is through the first and second control valves controlled.
  • the opening and closing movement of Injection valve member and the pressure buildup in the pump working space are thus coupled with each other and can not independently to be controlled.
  • EP-A2-957261 is also a Fuel injection known.
  • These Fuel injection device has a fuel pump for each cylinder of the internal combustion engine, the one by the internal combustion engine in a lifting movement having driven pump piston, the one Pump work space limited to the fuel from one Fuel tank is supplied.
  • the Pump work space is with a fuel injector connected, having an injection valve member, through the at least one injection port is controlled and that by the one connected to the pump working space Pressure chamber prevailing pressure against a closing force in Opening direction is movable.
  • It is also a second electrically controlled one Control valve provided by the in one Control pressure chamber is controlled controlling pressure, by the injection valve member at least indirectly in Closing direction is acted upon.
  • a disadvantage of this known fuel injection device is that through the Use of unpressurized fuel tank or the pressure side of a feed pump as a discharge space of the Pressure in the pump work space and in the associated with this Areas of the fuel injection device in the Connection with the discharge space drops sharply and thus the danger of cavitation exists. In addition, the Efficiency of the fuel injector thereby not optimal.
  • the fuel injection device with the Features according to claim 1 has the advantage that by the second control valve one from the pressure in the pump working space independent control of the opening and closing movement of the Injection valve member is enabled and that by the Check valve a decoupling of the pump working space of the allowed by the pressure holding valve maintained pressure level is, whereby leakage in the fuel pump can be avoided can.
  • the check valve from the Pressure holding valve maintained pressure level in the pressure chamber also at Suction stroke of the pump piston can be ensured.
  • FIG. 1 shows a Fuel injection device for an internal combustion engine in a schematic representation according to a first Embodiment
  • Figure 2 shows a curve of a pressure Injection openings of a fuel injection valve of Fuel injection device
  • Figure 3 in part a modified version of Fuel injection device
  • Figure 4 in part another modified version of Krafscherinspritz sensible.
  • FIGs 1,3 and 4 is a Fuel injection device for an internal combustion engine a motor vehicle shown.
  • the internal combustion engine is preferably a self-igniting internal combustion engine.
  • the Fuel injection device is preferably as trained so-called pump-line-nozzle system and has one for each cylinder of the internal combustion engine Fuel pump 10, a fuel injection valve 12 and a the fuel injection valve 12 with the Fuel pump 10 connecting line 14.
  • the Fuel pump 10 has one in a cylinder 16 tight guided pump piston 18, which by a cam 20 a camshaft of the internal combustion engine against the force a return spring 19 driven in a lifting movement becomes.
  • the pump piston 18 limited in the cylinder 16 a Pump work chamber 22, in which the delivery stroke of Pump piston 18 fuel is compressed under high pressure.
  • the pump working chamber 22 is by means of the delivery pressure of a Feed pump 21 fuel from a Fuel tank 9 of the motor vehicle supplied. It can be provided that by the feed pump 21st Fuel from the fuel tank 9 in a Memory area 24 is promoted, in which a pressure according to the delivery pressure of the feed pump 21, for example, may be about 4 to 6 bar. From the Storage area 24 reaches fuel during the intake stroke of Pump piston 18 in the pump chamber 22. Between the Storage area 24 and the pump chamber 22 is a for Pump working chamber 22 opening check valve 23 arranged. In the line 14 is a from the Pump workspace 22 opening another check valve 25th arranged. The delivery line 13 from the feed pump 21 opens between the pump working chamber 22 and the other Check valve 25.
  • the pump working space 22 can alternatively also via a through the pump piston 18th controlled connection to the storage area 24 for filling 18 be connected to the suction stroke of the pump piston.
  • the Pump piston 18 acts with a control edge with a in the pump working chamber 22 opening opening of the compound to the storage area 24 through the pump piston 18 is closed or released.
  • the check valve 23 can be omitted.
  • the fuel injection valve 12 is separate from the Fuel pump 10 is arranged and via the line 14 with connected to the pump working space 22.
  • the Fuel injection valve 12 has a valve body 26 on, which may be formed in several parts, in the one Injection valve member 28 in a bore 30th is guided longitudinally displaceable.
  • the valve body 26 indicates its the combustion chamber of the cylinder of the internal combustion engine facing end region at least one, preferably a plurality Injection openings 32.
  • the injection valve member 28 has at its the combustion chamber end facing a For example, about conical sealing surface 34, which with one in the valve body 26 in the combustion chamber facing End region formed valve seat 36 cooperates, from or after which the injection openings 32 dissipate.
  • valve body 26 is between the injection valve member 28 and the bore 30 to the valve seat 36 toward an annular space 38th present, in its the valve seat 36 facing away End region by a radial extension of the bore 30 in a pressure chamber 40 surrounding the injection valve member 28 passes.
  • the injection valve member 28 has the height of the Pressure chamber 40 by a cross-sectional reduction a Pressure shoulder 42 on.
  • a biased Closing spring 44 At the end of the combustion chamber facing away from the Injector member 28 engages a biased Closing spring 44, through which the injection valve member 28th is pressed toward the valve seat 36.
  • the closing spring 44 is arranged in a spring chamber 46 of the valve body 26, the adjoins the bore 30.
  • a further bore 48 in which a Piston 50 is tightly guided, with the Injection valve member 28 is connected.
  • the piston 50 limited with its the injection valve member 28 facing away Front side a control pressure chamber 52 in the valve body 26.
  • Im Valve body 26, a channel 54 is formed, in which the Line 14 to the fuel pump 10 opens and in the Pressure chamber 40 opens.
  • the Fuel injector has a near the Fuel pump 10 arranged first control valve 60, for example, be integrated into the fuel pump 10 can.
  • first control valve 60 Through the first control valve 60 is a connection 59 of the pump working chamber 22 of the fuel pump 10 with controlled a discharge space, as the at least indirectly the memory area 24 can serve.
  • the compound 59 branches downstream of the check valve 25 from the line 14 from.
  • connection 59 is upstream of the first Control valve 60, a pressure holding valve 62 is arranged.
  • the Pressure holding valve 62 for example, by a Closing spring 63 loaded valve member 64 which against the Force of the closing spring 63 to the first control valve 60 out in Opening direction is movable.
  • the pressure holding valve 62nd becomes one compared to the pressure in the discharge chamber 24 increased Pressure in the line 14 and thus also in the pressure chamber 40th maintained.
  • the first control valve 60 is electrically controllable and has an actuator 61, which is an electromagnet or a Piezoelectric actuator can be, which is electrically controlled and through which a valve member of the control valve 60 is movable.
  • the first control valve 60 may be pressure compensated or not be formed pressure balanced.
  • the first control valve 60 is formed as a 2/2-way valve and by this In a first switching position, the connection 59 to Relief space 24 opened and in a second Switching position is the connection 59 to the discharge space 24th separated.
  • the control valve 60 is powered by an electric Control device 66 in dependence on operating parameters the internal combustion engine controlled.
  • a second control valve 68 is provided, through which a Connection 70 of the control pressure chamber 52 with a Relief space, for example, the relief space 24, is controlled.
  • the second control valve 68 is electrical controllable and has an actuator 69, the one Electromagnet or a piezoelectric actuator can be, the electric is controlled and by a valve member of the Control valve 68 is movable.
  • the second control valve 68 is preferably formed pressure balanced.
  • the second Control valve 68 is designed as a 2/2-way valve, by the connection 70 in a first switching position the control pressure chamber 52 is opened with the discharge chamber 24 is and by that in a second switching position the Connection 70 of the control pressure chamber 52 with the Relief space 24 is disconnected.
  • a Throttle 58 In compound 59 of the Control pressure space 52 with the line 14 is a Throttle 58 and provided in the connection 70 of the Control pressure space 52 with the fuel tank 24 is between the control pressure chamber 52 and the second control valve 68 another throttle point 71 is provided.
  • the second Control valve 68 is also controlled by the controller 66 controlled.
  • the control of the control valves 60,68 through the controller 66 is dependent on Operating parameters of the internal combustion engine, such as For example, speed, load and temperature.
  • the Pressure retention valve 62 set pressure If that by the Pressure retention valve 62 set pressure is exceeded, so opens the pressure-holding valve 62 and fuel flows through the opened first control valve 60 and the connection 59 in the relief space 24. Subsequently remains in the Line 14 and the pressure chamber 40 prevailing pressure at least almost constant.
  • the opening pressure of the pressure holding valve 62 is due to the bias of its closing spring 63rd certainly.
  • the pre-injection takes place with a through the Pressure retention valve 62 limited pressure.
  • the second Control valve 68 is controlled by the control device 66 open, so that in the control pressure chamber 52 despite its Make connection 56 with the line 14 no high pressure can, but this reduced to the discharge space 24 down becomes.
  • the second Control valve 68 closed by the control device 66, so that the control pressure chamber 52 from the discharge space 24th is separated and in the control pressure chamber 52 via the Compound 56 with the line 14 builds high pressure.
  • a force of the closing spring 44th generates supportive force so that the Injection valve member 28 against its opening direction 29th moved and with its sealing surface 34 on the valve seat 36 to Plant comes and the pre-injection is finished.
  • the second Control valve 68 opened by the controller 66, so that the control pressure chamber 52 is relieved again and the Fuel injection valve 12 opens.
  • the first control valve 60 may be open at the beginning of the main injection, so the connection 59 to the relief space 24 is open and in the conduit 14 and the pressure chamber 40 of the Fuel injection valve 12 through the pressure-holding valve 62 established pressure.
  • the main injection begins then with a pressure level as well as the pre-injection is done.
  • the main injection starts when closed first control valve 60 with a higher pressure level than at initially opened first control valve 60.
  • the controller 66 Subsequently becomes the first control valve 60 by the controller 66 closed, so that the connection 59 with the Relief space 24 is disconnected and the main injection continues with a pressure as he according to the Profile of the cam 20 in the pump working chamber 22 is generated. It can also be provided that initially the first Control valve 60 is closed, but the second Control valve 68 is still closed, so that no Injection takes place. The second control valve 68 then becomes delayed until it opens, causing the beginning of the Main injection is delayed and also the Main injection starts at a higher pressure.
  • the Main injection corresponds in Figure 2 one with II designated injection phase, wherein the pressure curve with shown by the solid line in the event that the first control valve 60 is opened at the beginning, and the Pressure curve with dashed line in case is shown that the first control valve 60 is already closed Beginning is closed.
  • the second Control valve 68 closed by the control device 66, so that the control pressure chamber 52 from the discharge space 24th is separated and in the control pressure chamber 52 by the Connection with the line 14 and thus the Pump work space 22 builds high pressure, through which the Fuel injection valve 12 is closed.
  • the first Control valve 60 remains closed, so that the Connection 59 to the accumulator 62 is disconnected.
  • the second control valve 68 through the Control device 66 opened again, so that the Control pressure chamber 52 is relieved again and the Fuel injection valve 12 opens.
  • the post-injection takes place with a pressure curve corresponding to the profile of Cam 20.
  • the second control valve 68 by the control device 66 closed and / or the first control valve 60 through the Control device 66 opened.
  • the post-injection corresponds to a designated in Figure 2 with III Injection phase.
  • FIG. 3 shows another embodiment of the invention Fuel injection device shown in which the basic structure essentially the same as in the the above-explained embodiment is, however, the arrangement and training the second control valve 168 modified is.
  • the second control valve 168 is electrically controllable and has an actuator 169, which is an electromagnet or may be a piezoelectric actuator, which is electrically controlled and by a valve member of the control valve 168 movable is.
  • the second control valve 168 is in the connection 56 the control pressure chamber 52 is arranged with the channel 54.
  • the second control valve 168 is as a 3/2-way valve formed by the in a first switching position the Connection 56 of the control pressure chamber 52 with the channel 54 and so that the pump working chamber 22 is open and the Control pressure chamber 52 is separated from the discharge chamber 24.
  • a second switching position of the second control valve 168 is the control pressure chamber 52 with the discharge space 24th connected and the connection 56 to the channel 54 and thus to Pump workspace 22 is disconnected.
  • FIG 4 is a further embodiment of Fuel injection device shown in which the basic structure essentially the same as in the Embodiment of Figure 1 is, however, the arrangement and Training the second control valve 268 is modified.
  • the second control valve 268 is electrically controllable and has an actuator 269, which is an electromagnet or a Piezoelectric actuator can be, which is electrically controlled and by a valve member of the control valve 268 movable is.
  • actuator 269 which is an electromagnet or a Piezoelectric actuator can be, which is electrically controlled and by a valve member of the control valve 268 movable is.
  • the Line 14 connected and on the other hand is to this the Channel 54 to the pressure chamber 40 and the connection 56 to Control pressure chamber 52 connected.
  • the second control valve 268 is formed as a 3/2-way valve, through which in a first switching position, the connection 56 of the Control pressure chamber 52 is open with the channel 54 and the Channel 54 from the line 14 and thus from the pump working space 22 is disconnected. In a second switching position of the second Control valve 268 is through this the control pressure chamber 52nd separated from the channel 54 and the channel 54 is with the line 14 and thus connected to the pump working space 22.
  • the Control pressure chamber 52 has a connection 270 with the Relief 24 on, in the one to the relief space 24th opening check valve 272 is arranged and also a throttle point may be provided.
  • the second control valve 268 To enable the opening of the fuel injection valve 12 is the second control valve 268 by the controller 66 in brought his second switch position in which the Control pressure chamber 52 is separated from the channel 54 and the channel 54 is connected to the line 14 so that the of the Fuel pump 10 generated pressure in the pressure chamber 40 of the Fuel injection valve 12 passes, the Control pressure chamber 52 is relieved in the discharge chamber 24.
  • the second control valve 268 To close the fuel injection valve 12 is the second control valve 268 in its first switching position brought in the control pressure chamber 52 with the channel 54th However, the channel 54 is connected from the line 14th is disconnected.
  • the in the pressure room 40 of the Fuel injection valve 12 prevailing pressure acts also in the control pressure chamber 52, causing the Fuel injection valve 12 is closed. Otherwise is the operation of the fuel injection device according to this modified version same as in accordance with FIG. 1

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (4)

  1. Dispositif d'injection de carburant pour moteurs à combustion interne comprenant une pompe à carburant (10) pour chaque cylindre du moteur à combustion interne, qui présente un piston de pompe (18) entraíné en un mouvement linéaire par le moteur à combustion interne et qui limite une chambre de travail (22) qui reçoit du carburant en provenance d'un réservoir de carburant (9) et reliée à un injecteur de carburant (12) ayant un organe de soupape (28) qui commande au moins une ouverture d'injection (32) et qui peut être déplacé dans une direction d'ouverture (29) à l'encontre d'une force de fermeture par la pression régnant dans une chambre de pression (40) reliée à la chambre de travail (22) de la pompe, une première soupape de commande (60) commandée électriquement qui commande une liaison (59) allant de la chambre de travail (22) de la pompe à une chambre de décharge (24), avec entre la chambre de travail (22) de la pompe et la première soupape de commande (60) une soupape de maintien de pression (62) qui s'ouvre vers la première soupape de commande (60) et qui maintient une pression augmentée relativement à la pression régnant dans la chambre de décharge (24),
    caractérisé en ce qu'
    une deuxième soupape de commande (68 ; 168 ; 268) commandée électriquement commande la pression régnant dans une chambre de pression de commande (52) de l'injecteur de carburant (12) laquelle pression sollicite l'organe de soupape (28) au moins indirectement dans une direction de fermeture, entre la chambre de travail (22) de la pompe et la soupape de maintien de pression (62) un clapet anti-retour (25) s'ouvre vers la soupape de maintien de pression (62) et peut désaccoupler la chambre de travail (22) de la pompe de la chambre de pression (40) et de la soupape de maintien de pression (62), et la chambre de travail (22) de la pompe présente une liaison (13) avec le réservoir de carburant (9) ou avec une zone d'accumulateur (24), qui débouche entre cette chambre et le clapet anti-retour (25).
  2. Dispositif d'injection de carburant selon la revendication 1,
    caractérisé en ce que
    la seconde soupape de commande (168) est un distributeur à 3/2 voies qui, dans une première position de commutation, relie la chambre de pression de commande (52) à la chambre de travail (22) de la pompe et la sépare d'une chambre de décharge (24) et qui, dans une seconde position de commutation, relie la chambre de pression de commande (52) à la chambre de décharge (24) et la sépare de la chambre de travail (22) de la pompe.
  3. Dispositif d'injection de carburant selon la revendication 1,
    caractérisé en ce que
    la seconde soupape de commande (168) est un distributeur à 3/2 voies qui, dans une première position de commutation, sépare la chambre de pression de commande (52) d'une chambre de pression (40) de l'injecteur de carburant (12) et relie la chambre de pression (40) à la chambre de travail (22) de la pompe et qui, dans une seconde position de commutation, relie la chambre de pression de commande (52) à la chambre de pression (40) et sépare la chambre de pression (40) de la chambre de travail (22) de la pompe.
  4. Dispositif d'injection de carburant selon la revendication 3,
    caractérisé en ce que
    la chambre de pression de commande (52) présente une liaison (270) avec une chambre de décharge (24) dans laquelle de préférence un clapet anti-retour (272) s'ouvre vers la chambre de décharge (24).
EP02008632A 2001-05-17 2002-04-17 Système d'injection de carburant d'un moteur à combustion interne Expired - Lifetime EP1260702B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10123993 2001-05-17
DE10123993A DE10123993A1 (de) 2001-05-17 2001-05-17 Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine

Publications (3)

Publication Number Publication Date
EP1260702A2 EP1260702A2 (fr) 2002-11-27
EP1260702A3 EP1260702A3 (fr) 2004-03-17
EP1260702B1 true EP1260702B1 (fr) 2005-11-02

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EP02008632A Expired - Lifetime EP1260702B1 (fr) 2001-05-17 2002-04-17 Système d'injection de carburant d'un moteur à combustion interne

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US (1) US6637670B2 (fr)
EP (1) EP1260702B1 (fr)
DE (2) DE10123993A1 (fr)

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Publication number Priority date Publication date Assignee Title
DE10205750A1 (de) * 2002-02-12 2003-08-21 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
DE10221384A1 (de) * 2002-05-14 2003-11-27 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
US20060196974A1 (en) * 2005-03-01 2006-09-07 Caterpillar Inc. Fuel injector having a gradually restricted drain passageway
EP1780406B1 (fr) * 2005-10-25 2011-01-05 CRT Common Rail Technologies AG Injecteur pour un système d'injection de carburant et système d'injection de carburant avec tel injecteur
US20170093005A1 (en) * 2015-09-24 2017-03-30 Qualcomm Incorporated High-density stacked grounded coplanar waveguides
JP6962039B2 (ja) * 2017-07-12 2021-11-05 株式会社デンソー 燃料噴射装置

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DE4118236C2 (de) * 1990-06-06 2000-02-17 Avl Verbrennungskraft Messtech Einspritzsystem für Brennkraftmaschinen
GB2275307B (en) * 1993-02-18 1996-06-05 Bosch Gmbh Robert A fuel-injection system for internal combustion engines
DE4407166C1 (de) * 1994-03-04 1995-03-16 Daimler Benz Ag Kraftstoffeinspritzanlage für eine Brennkraftmaschine
JP3842331B2 (ja) * 1995-05-26 2006-11-08 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング 内燃機関の燃料供給のための燃料供給装置及び内燃機関を運転する方法
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US6484699B2 (en) * 2000-03-06 2002-11-26 Marius A. Paul Universal fuel injection system
DE10123994A1 (de) * 2001-05-17 2002-11-21 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine

Also Published As

Publication number Publication date
DE10123993A1 (de) 2002-11-21
EP1260702A3 (fr) 2004-03-17
DE50204742D1 (de) 2005-12-08
US6637670B2 (en) 2003-10-28
US20030006296A1 (en) 2003-01-09
EP1260702A2 (fr) 2002-11-27

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