EP0741244B1 - Injecteur - Google Patents

Injecteur Download PDF

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Publication number
EP0741244B1
EP0741244B1 EP96106549A EP96106549A EP0741244B1 EP 0741244 B1 EP0741244 B1 EP 0741244B1 EP 96106549 A EP96106549 A EP 96106549A EP 96106549 A EP96106549 A EP 96106549A EP 0741244 B1 EP0741244 B1 EP 0741244B1
Authority
EP
European Patent Office
Prior art keywords
valve
return
injection nozzle
injection
valve member
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
EP96106549A
Other languages
German (de)
English (en)
Other versions
EP0741244A3 (fr
EP0741244A2 (fr
Inventor
Gerd Dipl.-Ing. Huber
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.)
Mercedes Benz Group AG
Original Assignee
DaimlerChrysler AG
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
Priority claimed from DE19516245A external-priority patent/DE19516245C2/de
Application filed by DaimlerChrysler AG filed Critical DaimlerChrysler AG
Publication of EP0741244A2 publication Critical patent/EP0741244A2/fr
Publication of EP0741244A3 publication Critical patent/EP0741244A3/xx
Application granted granted Critical
Publication of EP0741244B1 publication Critical patent/EP0741244B1/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
    • 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
    • F02M63/0033—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat
    • F02M63/0036—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat with spherical or partly spherical shaped valve member ends
    • 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
    • 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
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • F02M63/0026—Valves characterised by the valve actuating means electrical, e.g. using solenoid using piezoelectric or magnetostrictive actuators
    • 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
    • F02M63/0056—Throttling valves, e.g. having variable opening positions throttling the flow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/30—Controlling fuel injection
    • F02D41/38—Controlling fuel injection of the high pressure type
    • F02D41/3809—Common rail control systems
    • 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

Definitions

  • the invention relates to an injection nozzle for use in common rail systems according to the preamble of the main claim.
  • Such common rail injection systems for diesel engines are, for example, in the progress reports for the 15th Vienna Motor Symposium of the VDI Verlag, row 12 / no. 205 (1994), pages 36 to 53.
  • Common rail Systems summarized, the goal of which is on the one hand, the injection pressure from the engine speed and to make the injection quantity independent, and on the other hand the middle one Increase injection pressure.
  • An essential feature of the Common Rail Systems (CR) lies in the decoupling of pressure generation and injection through a storage volume, which is the volume of one with the injectors of a multi-cylinder engine connected common high-pressure distribution line (common rail) and the Supply lines and the volumes available in the nozzle itself.
  • the injection process is in the prior art by an integrated in the injection nozzle Solenoid valve controlled.
  • a direct control of the nozzle body or Nozzle needle has so far been able to use either a magnetic valve or piezoelectric or magnetostrictive actuators can be realized.
  • the return valve designed as a solenoid valve has due to its magnetic actuation two defined positions, a closed and a fully open position. So that the injection nozzle when the return valve is opened by means of the magnet does not open too quickly, a return throttle is provided downstream of the return valve. The timing is determined by suitable adjustment of the inlet throttle to the return throttle Characteristic of the injector set.
  • a small cross section of the return throttle means a slow pressure drop across the working piston when opening the return valve and thus a good small quantity capability of the injection nozzle, what a pre-injection is advantageous.
  • a small return cross-section means one large minimum spray distance between two successive injections, because between the opening of the return valve and the pressure drop across the actuator piston a relatively long period of time passes. Systems with a small return throttle cross section are therefore suitable for a small quantity pre-injection and a widely offset one Main or post injection.
  • a large return throttle diameter is therefore suitable for one or more Main injections.
  • From DE-A 20 28 442 is an injection nozzle according to the preamble of the main claim known.
  • the return valve is immediately piezoelectric operated by its valve member is arranged at the end of a ceramic column.
  • the Ceramic column consists of a large number of cylinders stacked on top of each other and points Parting joints, in the helical and mutually connected Electrodes are embedded.
  • the high voltage required to operate the ceramic column is generated in a jacket-shaped pulse transformer that surrounds the ceramic column. A rectangular pulse is applied to the primary side of the transformer to open the injection nozzle due to which the ceramic column contracts and the return valve opens. After the voltage pulse has ended, the ceramic column expands, so that the pilot valve closes.
  • the operation is such that the return valve opens completely during a voltage pulse and outside of the voltage pulse closes completely so that the timing of the injection essentially through the cross section of the inlet throttle, the opening cross section of the return valve and the duration of the rectangular pulse is given.
  • the resulting variability of the Injection course is relatively limited.
  • the invention has for its object an injection nozzle for use in common rail To create systems that both have a good small volume capability for a pre-injection also has a rapid main injection following the pre-injection or a clocked main injection.
  • valve member of the return valve can be opened analogously, can Return valve itself form a variable return throttle cross section, so that the injector is optimally adaptable to the respective requirements.
  • the actuating device according to claim 2 is advantageously a piezoelectric working institution. Because the actuator is not immediate the nozzle body, but operated the return valve, relatively small enough Lift out how they are achieved with piezo actuators.
  • the claim 3 characterizes an advantageous embodiment of the injector, which is particularly is precisely controllable.
  • valve member of the for example, a return valve designed as a flat valve in its closed position and so with the injector closed, constantly against the high, in the work area of Actuator piston effective system pressure must be kept in contact with the valve seat.
  • valve member by the high system pressure acting in the work area even when in contact with the valve seat is maintained, which reduces energy consumption and operational reliability is enlarged.
  • the valve member arrives thus when the system pressure builds up in increasingly fixed contact with the seat, which means that Injector remains reliably closed and no fuel is sprayed.
  • Claims 6 and 7 characterize advantageous embodiments of the valve according to Claim 5.
  • Claims 8 and 9 are based on two advantageous methods using one according to the invention Injector directed. It does with the features of the claim 8 achieved that the main injection can follow the pilot injection for a short time. With the features of claim 9 it is achieved that the injection nozzle is extraordinary closes quickly, which is beneficial for combustion.
  • a fuel tank 2 via a filter and a prefeed pump 4 with a Common rail (CR) high pressure pump 6 connected.
  • CR Common rail
  • a line Leading from the CR high pressure pump a line to a distribution line (common rail) 8, which via lines 10 with the Injection nozzles assigned to each cylinder of a multi-cylinder internal combustion engine 12 is connected.
  • the injection nozzles 12 are via return lines 14 with one leading to the tank 2 Return line 16 connected.
  • the system pressure is limited by means of a limiting valve 18 and can last up to 2000 bar.
  • An electronic control unit 20 is with its outputs with the high pressure pump 6 and connected to the injectors 12.
  • the inputs 22 of the control unit are with a Pressure sensor 24 of the distributor line 8 and other sensors, not shown, for example for the position of an accelerator pedal, driving speed, temperatures, Boost pressure, air mass, speed, etc.
  • Fig. 2 shows the basic structure of an injection nozzle with the associated hydraulic diagram.
  • the injection nozzle 12 contains a nozzle body 26 which ends in a nozzle needle, which is in contact with a valve seat when the injector is closed.
  • the nozzle body 26 extends through a nozzle space 28 which is connected to the feed line 10.
  • the nozzle body 26 is connected to an actuator piston 30 or is formed in one piece, which works in a working space 32, which via an inlet throttle 34 with the supply line 10 is connected.
  • the working space 32 is further connected to the via a return valve 36 Return line 14 connected.
  • Such piezo actuators are known per se and are constructed like capacitors whose Dielectric made of piezoelectric material, for example lead zirconate titanate ceramic consists. Modern actuators work with field strengths of up to 2000 V / mm and reach relative changes in length of up to 1.5 ⁇ . In the example shown you can use a length of the piezo actuator 40 of approximately 100 mm thus a defined stroke of over Achieve 0.1mm, what an analog change in the opening cross-section of the return valve 36 completely depending on the voltage at the terminals 42 is sufficient.
  • the piezo actuator 40 could also be a magnetostrictive actuator in which magnetostrictive material is arranged within a current-carrying coil.
  • Fig. 3 shows a section through an executed example of an injection nozzle, wherein the Construction of the nozzle needle and its interaction with the seat known per se is, for example as in the automotive paperback, Bosch, VDI Verlag 1991, on page 509.
  • the effective area with which the actuator piston 30 is in the work area 32 is applied is larger than the effective area with which the nozzle body 26 in Nozzle chamber 28 or the nozzle needle is acted upon upstream of the valve seat, so that at the same pressure in the work chamber 32 and nozzle chamber 28, the nozzle body 26 in Closed position is pushed.
  • the entire pressure level in the feed line 10 can, depending on the operating conditions Pressure sensor 24 detects and, by the control unit 20 by controlling the high pressure pump 6 controlled, changed.
  • the diameter of the inlet throttle 34 was 0.30 mm and the Bore diameter of the return valve 36 (Fig. 3) 0.7mm.
  • curves Ia and IIa correspond to curves I and II of FIG. 4.
  • the main injection takes place here clocked by controlling the return valve 36 in this way is that the nozzle body 26 always as soon as it almost reaches its full stroke has, closes again.
  • Curves Ib, IIb and Ic, IIc show a comparison of a stroke of a main injection, in which the return valve 36 is opened once with a constant amplitude (Ib) and the other time the opening amplitude of the return valve 36 to a reduced value is set as soon as the opening of the injection nozzle has started or the Nozzle body 26 has lifted substantially from its seat.
  • the control system leads of the return valve 36 according to FIG. 1c for a faster closing of the injection nozzle Closing the return valve 36, which is advantageous with regard to the burning process.
  • FIG. 6 shows the hydraulic diagram of an embodiment somewhat modified compared to FIG. 2 an injection nozzle, the same reference numerals for functionally identical parts be used.
  • the main difference to Fig. 2 is that in the former Example the valve member 38 on the downstream side of the seat of the return valve 36 is arranged and thus to close the valve against the high System pressure must be constantly pushed into the closed position, whereas in the embodiment 6, the valve member 38 in the flow direction in front of the valve seat is arranged.
  • FIG. 7 shows the valve diagram of the return valve 36 according to FIG. 6.
  • a valve chamber 44 has a connection opening for connecting the connecting line 35 and a return opening 46 through which the valve chamber 44 into a space 48 passes, which is connected to the return line 14.
  • the return opening is like this formed that its edge has a valve seat 50 for the valve member formed as a ball 38 forms.
  • the ball 38 is pressed against the valve seat 50 by a spring 54.
  • For Actuation of the ball 38 protrudes through the space 48 and the return opening 46 with the piezo actuator 40 connected actuator 56, which, as shown in Fig. 4, in the space 48 downstream of the branch of the return line 14 with sealing is led.
  • Fig. 8 shows a section through an executed example of an injection nozzle, wherein the Construction of the nozzle needle and its interaction with the seat known per se is, for example as in the automotive paperback, Bosch, VDI Verlag 1991, on page 509.
  • a housing sleeve 60 ending in the injection nozzle 12 is provided with a further housing part 62 screwed.
  • the piezo actuator 40 is received with the actuator 56, the is sealed against the piezo actuator 40 by means of a seal 64 and by means of a Flange works against a spring 66.
  • the housing sleeve 60 and the housing part 62 span two further housing bodies between them 68 and 70.
  • the actuator piston 30 works in the housing body 68.
  • the inlet throttle 34 is formed in the housing body 70.
  • the housing body 70 furthermore has a multi-graded through hole on the connecting line 35, the Valve chamber 44, the return opening 46 (Fig. 7) with the valve seat 50 and the space 48 (Fig. 7) from which the return line 14 branches off.
  • the actuator 56 extends through the space formed in the upper end of the through hole of the housing body 70 48 with a smaller diameter or with grooves on its outer surface provided approach 72 which actuates the ball 38 through the return opening.
  • the Return line 14 branches off from an annular space through an enlarged bore step 8 is formed at the upper end of the through bore of the housing body 70 according to FIG.
  • the actuator 56 protrudes so far into the Return opening 46 that it with the spring 54 in contact with the valve seat 50th crowded ball 52 is not engaged. If the system pressure in the supply line 10 builds up, the ball 52 is also in contact with the valve seat by the system pressure 50 urged so that the return valve 36 is reliably closed and thus that entire injector is closed reliably.

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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 (9)

  1. Injecteur destiné à être utilisé dans des systèmes Common-Rail, comportant :
    un corps d'injecteur (26), qui est pourvu d'un piston d'actionneur (30) et qui, lorsque l'injecteur est à l'état fermé, s'applique contre un siège et, en amont du siège, limite une chambre d'injecteur (28) reliée à la canalisation à haute pression du système Common-Rail,
    une chambre de travail (32) du piston d'actionneur (30), qui est reliée à la canalisation à haute pression par l'intermédiaire d'un étranglement d'arrivée (34),
    la surface active du piston d'actionneur (30) étant supérieure à la surface du corps d'injecteur, qui est active dans la chambre d'injecteur,
    une canalisation de retour (14), qui s'étend à partir de la chambre de travail par l'intermédiaire d'une ouverture de retour d'une soupape de retour (36), et
    un dispositif d'actionnement commandé par un signal électrique et servant à actionner l'organe de la soupape de retour,
       caractérisé en ce que
    le dispositif d'actionnement est un dispositif (40) qui règle l'organe (38) de la soupape de retour (36) d'une manière analogue au signal électrique, de sorte que la soupape de retour forme un étranglement de la canalisation de retour (14) dont la section transversale est variable à volonté entre deux positions d'extrémité.
  2. Injecteur selon la revendication 1, caractérisé en ce que le dispositif d'actionnement est un dispositif (40) qui travaille de façon piézoélectrique.
  3. Injecteur selon la revendication 1 ou 2, caractérisé en ce que la section transversale active d'ouverture de la soupape de retour (36) varie, au moins au début de l'ouverture de la soupape, d'une manière approximativement proportionnelle à la course de l'organe de soupape (38).
  4. Injecteur selon l'une des revendications 1 à 3, caractérisé en ce que
    l'organe (38) de la soupape de retour (36) est disposé sur le côté tourné vers la canalisation de retour (14), d'une ouverture de la soupape de retour, pouvant être fermée par l'organe de la soupape.
  5. Injecteur selon l'une des revendications 1 à 3, caractérisé en ce que
    l'organe de soupape (38) est disposé dans une chambre (44) de la soupape de retour (36), qui est raccordée par l'intermédiaire d'une canalisation de liaison (35) à la chambre de travail (32) et par une ouverture de retour (46) à la canalisation de retour (14),
    un organe d'actionnement (56), actionné par le dispositif d'actionnement (40), pour l'organe de soupape (38) traverse l'ouverture de retour (46), et
    un siège de soupape (50), qui coopère avec l'organe de soupape (38), est agencé de telle sorte que lorsqu'il s'applique contre le siège de soupape, l'organe de soupape ferme la liaison entre la chambre (44) de la soupape et la canalisation de retour (14).
  6. Injecteur selon la revendication 5, caractérisé en ce que lorsque l'actionneur piézoélectrique (40) du dispositif d'actionnement est à l'état de repos, l'organe de soupape (38) s'applique contre le siège (50) de la soupape.
  7. Injecteur selon la revendication 5 ou 6, caractérisé en ce que l'organe de soupape (38) est agencé sous la forme d'une bille.
  8. Procédé pour commander une injection à phases multiples d'un moteur diesel à injection directe moyennant l'utilisation d'un injecteur selon l'une des revendications 1 à 7, caractérisé en ce que
    le signal électrique pour le dispositif d'actionnement (40) de la soupape de retour (36) est maintenu à une faible valeur pour une injection préalable avec une faible quantité d'injection et, après le débranchement pour la fermeture de l'injecteur, est maintenu à une valeur supérieure pour une injection principale suivante avec une quantité d'injection supérieure.
  9. Procédé pour commander une injection à phases multiples d'un moteur diesel à injection directe moyennant l'utilisation d'un injecteur selon l'une des revendications 1 à 7, caractérisé en ce que
    le signal électrique pour le dispositif d'actionnement (40) de la soupape de retour (36) est maintenu à une valeur élevée pendant une première durée pour une ouverture de l'injecteur, et est maintenu ensuite à une valeur élevée lorsque l'injecteur est ouvert, et ensuite, est maintenu à une valeur plus faible, lorsque l'injecteur est ouvert, pour préparer une fermeture rapide de l'injecteur.
EP96106549A 1995-05-03 1996-04-25 Injecteur Expired - Lifetime EP0741244B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19516245 1995-05-03
DE19516245A DE19516245C2 (de) 1995-05-03 1995-05-03 Verfahren zum Steuern einer mehrphasigen Einspritzung eines direkt einspritzenden Dieselmotors
DE19541819 1995-11-09
DE19541819A DE19541819A1 (de) 1995-05-03 1995-11-09 Einspritzdüse

Publications (3)

Publication Number Publication Date
EP0741244A2 EP0741244A2 (fr) 1996-11-06
EP0741244A3 EP0741244A3 (fr) 1996-11-27
EP0741244B1 true EP0741244B1 (fr) 1999-07-07

Family

ID=26014848

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96106549A Expired - Lifetime EP0741244B1 (fr) 1995-05-03 1996-04-25 Injecteur

Country Status (5)

Country Link
US (1) US5713326A (fr)
EP (1) EP0741244B1 (fr)
JP (1) JP3944529B2 (fr)
CN (1) CN1067462C (fr)
ES (1) ES2135815T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10131631A1 (de) * 2001-06-29 2003-01-16 Bosch Gmbh Robert Kraftstoffinjektor mit hochdruckfestigkeitsoptimiertem Steuerraum
DE10133682B4 (de) * 2000-07-12 2008-08-07 Denso Corp., Kariya Kraftstoffeinspritzvorrichtung
DE10157886B4 (de) * 2000-11-27 2009-12-17 DENSO CORPORATION, Kariya-shi Kraftstoffeinspritzeinheit eines Verbrennungsmotors

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19618932C2 (de) * 1996-05-10 2001-02-01 Siemens Ag Vorrichtung und Verfahren zur Regelung des Kraftstoffdruckes in einem Hochdruckspeicher
DE19624001A1 (de) * 1996-06-15 1997-12-18 Bosch Gmbh Robert Kraftstoffeinspritzvorrichtung für Brennkraftmaschinen
DE19706467C1 (de) * 1997-02-19 1998-03-26 Daimler Benz Ag Speichereinspritzsystem für eine mehrzylindrige Brennkraftmaschine
JP3834918B2 (ja) * 1997-03-04 2006-10-18 いすゞ自動車株式会社 エンジンの燃料噴射方法及びその装置
US6189508B1 (en) * 1997-03-12 2001-02-20 FORSCHUNGS- UND TRANSFERZENTRUM E.V. AN DER WESTSäCHSISCHEN HOCHSCHULE ZWICKAU Method for fuel injection in multicylinder engines and device for the implementation of said method
DE19747231A1 (de) * 1997-10-25 1999-04-29 Bosch Gmbh Robert Verfahren zur Einspritzung von Kraftstoff in die Brennräume einer luftverdichtenden, selbstzündenden Brennkraftmaschine
DE19835340A1 (de) * 1997-11-03 2000-02-10 Guenter Slowik Verfahren und Einspritzdüse zum Einspritzen von Kraftstoff in den Brennraum einer Brennkraftmaschine
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
DE19821768C2 (de) * 1998-05-14 2000-09-07 Siemens Ag Dosiervorrichtung und Dosierverfahren
AT2962U3 (de) * 1998-07-02 1999-11-25 Avl List Gmbh Einspritzeinrichtung für eine brennkraftmaschine
JP2000027725A (ja) * 1998-07-08 2000-01-25 Isuzu Motors Ltd コモンレール式燃料噴射装置
JP3695213B2 (ja) * 1999-04-02 2005-09-14 いすゞ自動車株式会社 コモンレール式燃料噴射装置
US6253736B1 (en) 1999-08-10 2001-07-03 Cummins Engine Company, Inc. Fuel injector nozzle assembly with feedback control
DE10003252A1 (de) * 2000-01-26 2001-08-09 Bosch Gmbh Robert Einspritzdüse
US6720684B2 (en) 2000-03-22 2004-04-13 Siemens Automotive Corporation Method of control for a self-sensing magnetostrictive actuator
US6345606B1 (en) * 2000-04-12 2002-02-12 Delphi Technologies, Inc Method for controlling fuel rail pressure using a piezoelectric actuated fuel injector
DE10035815A1 (de) * 2000-07-22 2002-01-31 Bosch Gmbh Robert Verfahren zur Steuerung eines Einspritzventils
US6837221B2 (en) 2001-12-11 2005-01-04 Cummins Inc. Fuel injector with feedback control
US6792921B2 (en) * 2001-12-17 2004-09-21 Caterpillar Inc Electronically-controlled fuel injector
US6760212B2 (en) * 2002-09-23 2004-07-06 Delphi Technologies, Inc. Piezoelectric injector drive circuit
US7001158B2 (en) * 2003-01-24 2006-02-21 Sturman Industries, Inc. Digital fluid pump
DE102004001679B4 (de) * 2004-01-12 2009-01-08 Continental Automotive Gmbh Piezoaktor mit Mitteln zur Kompensation der thermischen Längenänderung und Kraftstoff-Einspritzventil mit Piezoaktor
DE102004018931A1 (de) * 2004-04-20 2005-11-17 Robert Bosch Gmbh Common-Rail-Injektor
DE102004042189B4 (de) * 2004-08-31 2007-04-12 Siemens Ag Ventil

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2028442A1 (de) * 1970-06-10 1971-12-16 Daimler Benz Ag Kraftstoffeinspritzventil fur Ver brennungsmotoren
US4022166A (en) * 1975-04-03 1977-05-10 Teledyne Industries, Inc. Piezoelectric fuel injector valve
FR2580728B1 (fr) * 1985-04-19 1989-05-05 Alsacienne Constr Meca Systeme d'injection de combustible pour moteur diesel
US5241935A (en) * 1988-02-03 1993-09-07 Servojet Electronic Systems, Ltd. Accumulator fuel injection system
US5467754A (en) * 1988-02-03 1995-11-21 Servojet Electronic Systems, Ltd. Accumulator fuel injection system
DE4011782A1 (de) * 1989-04-11 1990-10-31 Toyota Motor Co Ltd Steuerschaltung fuer eine brennstoffeinspritzvorrichtung
GB9320798D0 (en) * 1993-10-08 1993-12-01 Lucas Ind Plc Fuel injection nozzle
DE4337048C2 (de) * 1993-10-29 1996-01-11 Daimler Benz Ag Kraftstoffeinspritzanlage für eine Brennkraftmaschine
DE4434892A1 (de) * 1994-09-29 1996-04-11 Siemens Ag Einspritzventil
US5605134A (en) * 1995-04-13 1997-02-25 Martin; Tiby M. High pressure electronic common rail fuel injector and method of controlling a fuel injection event
DE19516245C2 (de) * 1995-05-03 2002-12-05 Daimler Chrysler Ag Verfahren zum Steuern einer mehrphasigen Einspritzung eines direkt einspritzenden Dieselmotors

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10133682B4 (de) * 2000-07-12 2008-08-07 Denso Corp., Kariya Kraftstoffeinspritzvorrichtung
DE10157886B4 (de) * 2000-11-27 2009-12-17 DENSO CORPORATION, Kariya-shi Kraftstoffeinspritzeinheit eines Verbrennungsmotors
DE10131631A1 (de) * 2001-06-29 2003-01-16 Bosch Gmbh Robert Kraftstoffinjektor mit hochdruckfestigkeitsoptimiertem Steuerraum

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JP3944529B2 (ja) 2007-07-11
EP0741244A3 (fr) 1996-11-27
CN1145451A (zh) 1997-03-19
US5713326A (en) 1998-02-03
JPH09100757A (ja) 1997-04-15
CN1067462C (zh) 2001-06-20
ES2135815T3 (es) 1999-11-01
EP0741244A2 (fr) 1996-11-06

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