EP0925440B1 - Injecteur de carburant - Google Patents

Injecteur de carburant Download PDF

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Publication number
EP0925440B1
EP0925440B1 EP98921342A EP98921342A EP0925440B1 EP 0925440 B1 EP0925440 B1 EP 0925440B1 EP 98921342 A EP98921342 A EP 98921342A EP 98921342 A EP98921342 A EP 98921342A EP 0925440 B1 EP0925440 B1 EP 0925440B1
Authority
EP
European Patent Office
Prior art keywords
valve
fuel
pressure
passage
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
EP98921342A
Other languages
German (de)
English (en)
Other versions
EP0925440A1 (fr
Inventor
Rudolf Heinz
Roger Potschin
Klaus-Peter Schmoll
Friedrich Boecking
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 EP0925440A1 publication Critical patent/EP0925440A1/fr
Application granted granted Critical
Publication of EP0925440B1 publication Critical patent/EP0925440B1/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
    • F02M63/0045—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
    • 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
    • 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
    • F02M45/08—Injectors peculiar thereto
    • 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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D41/00—Electrical control of supply of combustible mixture or its constituents
    • F02D41/20—Output circuits, e.g. for controlling currents in command coils
    • F02D41/2096—Output circuits, e.g. for controlling currents in command coils for controlling piezoelectric injectors

Definitions

  • the invention relates to a fuel injection device according to the preamble of claim 1.
  • a 3-way valve is used with which Help the control room either only with the high pressure fuel source or only with a fuel return tank connected is.
  • the actuation of the valve member this 3-way valve is made using an electromagnet.
  • This known configuration is accordingly the control of the 3-way valve either the injection valve member in fully open or in completely closed Positioned.
  • the fuel injection device with the characterizing features of claim 1 has the compared to the advantage that the valve body of the valve member can be brought into an intermediate position so that the Control room by appropriate control of the existing one Connection to the high-pressure fuel source on the one hand and on the other hand a lower pressure to the relief space or higher pressure than if the control room exclusively with one or the other of the pressure levels would be connected.
  • the injection valve member can thus also take an intermediate position corresponding to a partial opening, which allows a diminished in this position Fuel injection rate of fuel into the combustion chamber too cause. It can be beneficial in this way with the help a pre-injection of a 3-way valve of the defined type can be realized that regularly only a very small injection quantity requires.
  • FIG. 1 shows a schematic representation the fuel injection device
  • Figure 2 shows a fuel injection valve the fuel injector in Section
  • Figure 3 that controls the fuel injector Valve element
  • Figure 4 shows a pressure curve, the control and the effect of the control operations of the 3-way valve clarified.
  • the invention is based on a fuel injection device, which has a high-pressure fuel pump 5 which from a fuel reservoir 6, if necessary with the interposition a prefeed pump receives fuel and over a pressure line 7, brought to high pressure, a high-pressure fuel reservoir 8 feeds.
  • a high-pressure fuel pump 5 which from a fuel reservoir 6, if necessary with the interposition a prefeed pump receives fuel and over a pressure line 7, brought to high pressure, a high-pressure fuel reservoir 8 feeds.
  • These parts are as To denote high-pressure fuel sources.
  • To control the Pressure in the high-pressure fuel reservoir 8 is a pressure control valve 11 containing relief line 12 is provided, from the high-pressure fuel reservoir back to the fuel tank 6 leads.
  • the high-pressure fuel accumulator 8 supplies via fuel lines 15 each Fuel injection valve 14 with fuel injection pressure brought fuel.
  • control unit 18 which corresponds to the operating parameters of the internal combustion engine the opening of the fuel injection valves 14 controls and so the fuel injection start and fuel injection duration certainly. From this control unit at the same time also controlled the pressure control valve, whereby as one of the parameters of the pressure in the high-pressure fuel reservoir is detected by means of a pressure sensor 9 and the control unit is fed.
  • FIG. 2 shows parts of a fuel injection valve 14 in the Cut.
  • This has a housing 19 by in a Longitudinal bore 20 is a needle-like injection valve member 21 is led.
  • This injector member is at one end provided with a conical sealing surface 23, those protruding into the combustion chamber of the internal combustion engine Tip 24 of the valve housing interacts with a seat, from which lead out injection openings 25, which the interior of the fuel injector, here the injector member 21 surrounding, with under injection pressure Connects fuel-filled annular space 27 with the combustion chamber, so as to perform an injection when the injector member has lifted from its seat.
  • the annulus 27 is connected to a pressure chamber 29 which is in constant Connected to a pressure line 30, which with the fuel line 15 of the respective fuel injection valve connected is.
  • the so the high-pressure fuel storage 8 supplied fuel pressure also acts in the Pressure chamber 29 and there on a pressure shoulder 31, via which in known manner, the fuel injection valve member at suitable Conditions are lifted off its valve seat can. At the other end of the injection valve member, this is in guided a cylinder bore 33 and closes there its end face 34 a control room 36.
  • the closed position the injection valve member is by the Pressure in the control room 36 and also by a compression spring that here symbolically only as arrow F acting in the closing direction is registered, controlled. While the in closing force acting spring F is unchangeable in its characteristics, with the help of the pressure in the control room 36, the opening or. Closing movement of the injection valve member triggered.
  • control room 36 is connected via a channel 37 with a 3-way valve trained valve 40 connected.
  • a channel 37 opens into a valve chamber 41 in which a closing body 42 of the valve member 43 of the valve 40 is adjustable is arranged.
  • the valve member 43 has one with the locking body 42 firmly connected plunger 45.
  • Am Closing body is a first sealing surface 46 on its one End face and a second sealing surface 47 on its other End face arranged. The second face goes in a connecting part 48 to the plunger 45, the one has a smaller diameter than the rest, in a guide hole 50 guided plungers 45.
  • annular space 51 Between the guide bore and the connecting part 48 of the plunger 45 becomes an annular space 51 formed, into which an inflow channel 53 opens.
  • the forms Annulus 51 a flow channel between the inlet channel and the valve chamber 41.
  • a valve seat 54 At the mouth of the guide bore 50 in the valve chamber 41 is formed a valve seat 54, which as second valve seat together with the second sealing surface 47 acts.
  • Coaxial with this and coaxial with the valve member 43 or the closing body 42 is at the opposite end of the Valve chamber 41 formed a first valve seat 55 with which the first sealing surface 46 acts together. From valve seat 55 leads from a drain channel 57 from the valve chamber 41. This is also shown in Figure 2 and leads to the Fuel reservoir 6 back or to a different design Relief chamber.
  • the inflow channel 53 which can also be seen in Figure 2, is with connected to the fuel line 15 and can therefore fuel from the high-pressure fuel reservoir via the valve chamber 41 when the valve member 43 is lifted from the second valve seat 54 Feed control room 36.
  • the first and second sealing surfaces 46 and 47 are present Trap conical.
  • the actuation of the The valve member 43 does not take place via the tappet 45 drive 59, shown as a piezo arrangement, e.g. as sogn. Piezostack or as a magnetostrictive element is executed.
  • These drives have the advantage that they Carry out travel distances analogous to the application of voltage and with high actuation force, albeit absolutely Generatable path is relatively small, so that with large travel ranges large piezo element packs can also be used have to.
  • the further advantage of such drives is that that they act very quickly, so that fast switching operations are feasible, especially in the injection technology are of great advantage.
  • the valve body 42 can now be adjusted by the drive 59 be that either with its first sealing surface 46 comes to rest on the first valve seat 55 and thus the Connection between control room 36 and drain channel 59 blocks.
  • the high pressure of the control chamber 36 High-pressure fuel reservoir 5 supplied and the injection valve member 21 due to the resulting force from the its end face 34 acting pressure held in the closed position.
  • the valve body 42 With its second sealing surface 47 in contact on the second valve seat 54 and thus closes the Inlet of high pressure fuel to the control room 36 and opens the drain channel 57 at the same time.
  • the control chamber 36 is then relieved and the injection valve member 21 may be due to on his pressure shoulder 31 acting high fuel pressure get into the open position and thus a fuel injection cause. If the control room 36 again with high The injection valve member is filled with fuel pressure 21 again because of the predominant force in the closing direction brought into the closed position.
  • the throttle 58 provided in the drain channel 57. It can still be in the inlet channel 53 also a throttle 60 are used, the Influence of pressure in the control room affected, both throttles 58 and 60 together on the state of the intermediate position of the Valve body between the two valve seats and the Pressure formation in the control room 36 are coordinated.
  • These chokes and / or the respective approach of the closing body 42 have one or the other of the valve seats 54 and 55 Influence on the resulting pressure of the control of the pilot injection quantity.
  • the inlet channel opens 53 into the annular space 51.

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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)

Abstract

La présente invention concerne un injecteur comprenant une source haute pression (8) d'où le carburant est acheminé vers des soupapes injectrices (14) commandées par une soupape (40) à impulsion (59) piézoélectrique ou magnétostrictive. Cette impulsion permet de réaliser un soupape à trois voies dont le corps de fermeture (42) peut être mis dans une position intermédiaire, où une chambre de commande (36) exerce sur ledit corps un force hydraulique dans le sens de fermeture de l'élément de fermeture (21) de l'injecteur et peut être relié à la fois à une source de carburant HP (8) et à un espace de décharge pour régler la pression de commande dans une plage comprise entre la haute pression de la source et la pression de décharge. On peut ainsi régler une ouverture partielle de l'élément (21) de la soupape injectrice (14) de manière à ce qu'une quantité réduite de carburant soit injectée dans la chambre de combustion du moteur.

Claims (4)

  1. Dispositif d'injection de carburant pour un moteur à combustion interne, comprenant une source de carburant à haute pression (5, 8) à laquelle est relié un injecteur de carburant (14) comportant une aiguille (21) pour commander une ouverture d'injection (25) et une chambre de commande (36) délimitée par une paroi mobile (34) reliée au moins indirectement à l'aiguille (21) de l'injecteur, et un canal d'alimentation (53) par lequel la source de carburant à haute pression peut être reliée à la chambre de commande (36), ainsi qu'un canal de sortie (57) qui peut relier la chambre de commande (36) à une chambre de décharge (6),
    les liaisons ci-dessus vers et en partant de la chambre de commande étant commandées par l'intermédiaire d'une vanne (40) comportant un organe de vanne (43), avec un organe d'obturation (42) coulissant coaxialement par rapport à deux sièges de vanne (54, 55), dans une chambre de vanne (41) reliée en permanence à la chambre de commande (36) par un canal (37), et comportant un poussoir (45) entraíné par un moyen d'entraínement électrique (59) qui déplace l'organe d'obturation (42) guidé entre les sièges de soupape (54, 55) dans un perçage de guidage (50) adjacent coaxialement à l'un des sièges de soupape (54), et dans lequel
    entre l'un des sièges de soupape (54), le poussoir (45, 48) et le perçage de guidage (50) dans le boítier (19) de la vanne (40), on a un canal de passage (51) relié au canal de sortie ou au canal d'alimentation et qui se poursuit coaxialement au niveau de l'autre siège de soupape (55) de manière adjacente au canal d'alimentation ou au canal de sortie, avec dans au moins l'un des canaux, un organe d'étranglement (58, 60) qui commande le passage,
    caractérisé en ce que
    l'entraínement (59) du poussoir (45) est un élément piézo-électrique ou magnétostrictif dont l'excitation est commandée pour que l'organe d'obturation (42) prenne une position dans laquelle l'un ou l'autre des sièges de soupape (54, 55) est totalement ouvert ou fermé, ou une position intermédiaire dans laquelle les deux sièges de soupape (54, 55) sont ouverts en commande efficace, avec pour cela dans la chambre de commande (36) une décharge partielle qui déplace l'aiguille d'injecteur (21) dans une position d'ouverture partielle.
  2. Dispositif d'injection de carburant selon la revendication 1,
    caractérisé en ce que
    le poussoir (45) est relié solidairement à l'organe d'obturation (42).
  3. Dispositif d'injection de carburant selon la revendication 1,
    caractérisé en ce qu'
    un étranglement (60, 58) est prévu respectivement à la fois dans le canal d'alimentation (53) et dans le canal de sortie (57).
  4. Dispositif d'injection de carburant selon la revendication 1,
    caractérisé en ce que
    le canal d'alimentation (53) débouche du côté du poussoir (45) dans la chambre de vanne (41).
EP98921342A 1997-07-11 1998-03-10 Injecteur de carburant Expired - Lifetime EP0925440B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19729844A DE19729844A1 (de) 1997-07-11 1997-07-11 Kraftstoffeinspritzvorrichtung
DE19729844 1997-07-11
PCT/DE1998/000700 WO1999002849A1 (fr) 1997-07-11 1998-03-10 Injecteur de carburant

Publications (2)

Publication Number Publication Date
EP0925440A1 EP0925440A1 (fr) 1999-06-30
EP0925440B1 true EP0925440B1 (fr) 2002-06-19

Family

ID=7835459

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98921342A Expired - Lifetime EP0925440B1 (fr) 1997-07-11 1998-03-10 Injecteur de carburant

Country Status (6)

Country Link
US (1) US6196193B1 (fr)
EP (1) EP0925440B1 (fr)
JP (1) JP4024314B2 (fr)
KR (1) KR100561791B1 (fr)
DE (2) DE19729844A1 (fr)
WO (1) WO1999002849A1 (fr)

Families Citing this family (47)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19939443A1 (de) * 1999-08-20 2001-03-01 Bosch Gmbh Robert Vorrichtung zur Steuerung des Druckverlaufs einer Pumpeneinheit
DE19939447A1 (de) * 1999-08-20 2000-11-23 Bosch Gmbh Robert Einrichtung zur Einspritzung von Kraftstoff
DE19939452C2 (de) * 1999-08-20 2003-04-17 Bosch Gmbh Robert Vorrichtung zur Einspritzung von Kraftstoff
DE19939451A1 (de) * 1999-08-20 2000-11-02 Bosch Gmbh Robert Aggregat zur Einspritzung von Kraftstoff
DE10038995A1 (de) * 1999-10-16 2001-04-19 Bosch Gmbh Robert Verfahren und Vorrichtung zur Steuerung der Kraftstoffzumessung in einer Brennkraftmaschine
DE50011077D1 (de) * 1999-10-16 2005-10-06 Bosch Gmbh Robert Verfahren und vorrichtung zur steuerung der kraftstoffzumessung in eine brennkraftmaschine
DE10002722A1 (de) * 2000-01-22 2001-08-02 Bosch Gmbh Robert Ventil zum Steuern von Flüssigkeiten
DE60031092D1 (de) 2000-04-01 2006-11-16 Bosch Gmbh Robert Kraftstoffeinspritzsystem
ATE446590T1 (de) 2000-04-01 2009-11-15 Bosch Gmbh Robert Verfahren und vorrichtung zur regelung von spannungen und spannungsgradienten zum antrieb eines piezoelektrischen elements
DE60018897T2 (de) 2000-04-01 2006-04-06 Robert Bosch Gmbh Steuerung der Polarization der piezoelektrischen Elemente vor jeder ersten Einspritzung zur Erreichung von optimalen Startbedingungen
DE10016476A1 (de) * 2000-04-01 2001-12-06 Bosch Gmbh Robert Verfahren zur Diagnose der Spannungsansteuerung für einen piezoelektrischen Aktor eines Einspritzventils
EP1138918B1 (fr) 2000-04-01 2005-11-09 Robert Bosch GmbH Méthode et dispositif pour donner des données de commande à un système de commande
DE60015922T2 (de) * 2000-04-01 2005-03-31 Robert Bosch Gmbh Steuerverfahren und Vorrichtung zur Mehrstellungventilbetätigung in einem Kraftstoffeinspritzsystem
EP1138913A1 (fr) 2000-04-01 2001-10-04 Robert Bosch GmbH Méthode et appareil pour charger un élément piézoélectrique en fonction de mesures de temps de charge/décharge
DE60023265T2 (de) 2000-04-01 2006-05-24 Robert Bosch Gmbh Steuerung einer Einspritzanlage mit piezoelektrischen Elementen
EP1138904B1 (fr) 2000-04-01 2005-09-14 Robert Bosch GmbH Procédé et appareil pour charger un élément piézoélectrique
DE60039676D1 (de) 2000-04-01 2008-09-11 Bosch Gmbh Robert Vorrichtung und Verfahren zur Erkennung eines Kurzschlusses zur Batteriespannung während der Ansteuerung piezoelektrischer Elemente
DE60018385T2 (de) 2000-04-01 2005-12-29 Robert Bosch Gmbh Bestimmung der Temperatur eines piezoelektrischen Elements unter Verwendung eines Energiebilanzmodells des piezoelektrischen Elements
DE60011038T2 (de) * 2000-04-01 2005-07-21 Robert Bosch Gmbh Zeit und Fall-kontrolliertes Aktivierungssystem für die Aufladung und die Entladung von piezoelektrischen Elementen
DE60018549T2 (de) 2000-04-01 2006-04-20 Robert Bosch Gmbh Brennstoffeinspritzanlage
EP1139449A1 (fr) 2000-04-01 2001-10-04 ROBERT BOSCH GmbH Système d'injection de carburant
DE60005786T2 (de) 2000-04-01 2004-08-12 Robert Bosch Gmbh Optimierung von Einspritzsystemen, die piezoelektrische Elemente verwenden , durch Kompensation der Temperaturabhängigkeit
DE60003782D1 (de) 2000-04-01 2003-08-14 Bosch Gmbh Robert Methode und Apparat für die Aufladung eines piezoelektrischen Elements
DE60011993T2 (de) 2000-04-01 2004-12-09 Robert Bosch Gmbh Apparat und Methode für das Ermitteln einer Verringerung der Kapazität während des Antriebes von piezoelektrischen Elementen
DE60023446T2 (de) 2000-04-01 2006-05-18 Robert Bosch Gmbh Verfahren und Vorrichtung zur Bestimmung der Ladungsquantität während des Auf- und Entladens von piezoelektrischen Elementen
EP1143133B1 (fr) 2000-04-01 2004-01-21 Robert Bosch GmbH Compensation des variations entre lots du déplacement d'éléments piézoélectriques multicouches dû aux variations de l'épaisseur des couches ou du nombre de couches
EP1138912A1 (fr) 2000-04-01 2001-10-04 Robert Bosch GmbH Optimalisation en ligne d'un système d'injection à éléments piezoélectriques
DE60019262T2 (de) * 2000-04-01 2006-01-19 Robert Bosch Gmbh Brennstoffeinspritzanlage
EP1139447A1 (fr) 2000-04-01 2001-10-04 Robert Bosch GmbH Méthode et appareil pour déterminer une capacité compensée en fréquence pour des organes piézoélectriques
EP1139445A1 (fr) 2000-04-01 2001-10-04 Robert Bosch GmbH Methode et dispositif pour le diagnostique de faute dans un système utilisant un élément piezoelectrique
DE60019260T2 (de) 2000-04-01 2006-02-09 Robert Bosch Gmbh Verfahren und Vorrichtung zur zeitgesteuerter Spannungsmessung über einer Vorrichtung in einem Ladungskreis eines piezoelektrischen Element
ATE426251T1 (de) 2000-04-01 2009-04-15 Bosch Gmbh Robert Verfahren und vorrichtung zur regulierung von systemparametern
DE10032022B4 (de) * 2000-07-01 2009-12-24 Robert Bosch Gmbh Verfahren zur Bestimmung der Ansteuerspannung für ein Einspritzentil mit einem piezoelektrischen Aktor
JP3829604B2 (ja) * 2000-08-30 2006-10-04 トヨタ自動車株式会社 燃料噴射装置
DE10101797A1 (de) 2001-01-17 2002-07-18 Bosch Gmbh Robert Einspritzventil
DE10131640A1 (de) * 2001-06-29 2003-01-16 Bosch Gmbh Robert Kraftstoffinjektor mit Einspritzverlaufsformung durch schaltbare Drosselelemente
DE10146739A1 (de) * 2001-09-22 2003-04-10 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
US6598591B2 (en) * 2001-12-18 2003-07-29 Caterpillar Inc Measuring check motion through pressure sensing
DE10212396A1 (de) * 2002-03-20 2003-10-09 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung mit 3/2-Wege-Ventil
RU2263224C1 (ru) * 2004-04-27 2005-10-27 Московский государственный открытый университет (МГОУ) Система подачи топлива в двигатель внутреннего сгорания
JP4325589B2 (ja) 2004-07-06 2009-09-02 株式会社デンソー コモンレール用インジェクタ
RU2298683C2 (ru) * 2005-07-04 2007-05-10 Московский государственный открытый университет (МГОУ) Способ нагнетания и регулирования подачи топлива в форсунку двигателя внутреннего сгорания и устройство для его осуществления
JP4855946B2 (ja) * 2006-06-08 2012-01-18 株式会社デンソー 燃料噴射弁
JP2008002306A (ja) * 2006-06-21 2008-01-10 Denso Corp 燃料噴射弁
RU2315196C1 (ru) * 2006-06-22 2008-01-20 Московский государственный открытый университет (МГОУ) Способ питания аккумулятора давления системы подачи топлива в двигатель внутреннего сгорания и устройство для его осуществления
US9920674B2 (en) 2014-01-09 2018-03-20 Cummins Inc. Variable spray angle injector arrangement
US9897033B2 (en) 2014-05-15 2018-02-20 Cummins Inc. High pressure, high speed regulating switch valve

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4465231A (en) * 1982-03-29 1984-08-14 Deere & Company Control device and method for activating a fuel injector nozzle
DE4117809A1 (de) * 1991-05-31 1992-12-03 Bosch Gmbh Robert Kraftstoffeinspritzeinrichtung fuer brennkraftmaschinen und verfahren zur kraftstoffeinspritzung
US5282574A (en) * 1991-12-19 1994-02-01 Caterpillar Inc. Hydraulic flow shutoff device for a unit fuel pump/injector
CH686845A5 (de) * 1993-03-08 1996-07-15 Ganser Hydromag Steueranordnung fuer ein Einspritzventil fuer Verbrennungskraftmaschinen.
DE4406901C2 (de) * 1994-03-03 1998-03-19 Daimler Benz Ag Magnetventilgesteuerter Injektor für eine Brennkraftmaschine
DE4434892A1 (de) * 1994-09-29 1996-04-11 Siemens Ag Einspritzventil
US5779149A (en) * 1996-07-02 1998-07-14 Siemens Automotive Corporation Piezoelectric controlled common rail injector with hydraulic amplification of piezoelectric stroke
DE29708369U1 (de) * 1997-05-09 1997-07-10 FEV Motorentechnik GmbH & Co. KG, 52078 Aachen Steuerbares Einspritzventil für die Kraftstoffeinspritzung an Brennkraftmaschinen

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KR20000068531A (ko) 2000-11-25
US6196193B1 (en) 2001-03-06
DE59804498D1 (de) 2002-07-25
KR100561791B1 (ko) 2006-03-21
WO1999002849A1 (fr) 1999-01-21
JP2001500218A (ja) 2001-01-09
JP4024314B2 (ja) 2007-12-19
EP0925440A1 (fr) 1999-06-30
DE19729844A1 (de) 1999-01-14

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