EP1887213B1 - Injecteur de carburant doté d'une commande à aiguille directe et assistance par servosoupape - Google Patents

Injecteur de carburant doté d'une commande à aiguille directe et assistance par servosoupape Download PDF

Info

Publication number
EP1887213B1
EP1887213B1 EP20070111696 EP07111696A EP1887213B1 EP 1887213 B1 EP1887213 B1 EP 1887213B1 EP 20070111696 EP20070111696 EP 20070111696 EP 07111696 A EP07111696 A EP 07111696A EP 1887213 B1 EP1887213 B1 EP 1887213B1
Authority
EP
European Patent Office
Prior art keywords
control
actuator
chamber
valve
control piston
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 - Fee Related
Application number
EP20070111696
Other languages
German (de)
English (en)
Other versions
EP1887213A3 (fr
EP1887213A2 (fr
Inventor
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 EP1887213A2 publication Critical patent/EP1887213A2/fr
Publication of EP1887213A3 publication Critical patent/EP1887213A3/fr
Application granted granted Critical
Publication of EP1887213B1 publication Critical patent/EP1887213B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • 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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/167—Means for compensating clearance or thermal expansion
    • 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
    • F02M63/0024—Valves characterised by the valve actuating means electrical, e.g. using solenoid in combination with permanent magnet
    • 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
    • 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
    • F02M2547/00—Special features for fuel-injection valves actuated by fluid pressure
    • F02M2547/001—Control chambers formed by movable sleeves
    • 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
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means

Definitions

  • the invention relates to an injector for injecting fuel into a combustion chamber of an internal combustion engine according to the preamble of claim 1.
  • a fuel injector for injecting fuel into a combustion chamber of an internal combustion engine having an injector housing having a fuel inlet communicating with a central fuel high pressure source outside the injector housing and with a pressure space within the injector housing depending on the position a control valve is injected with high pressure fuel.
  • the control valve is actuated by means of a piezoelectric actuator.
  • a coupling space is formed between the control valve and the piezoelectric actuator. This acts as a hydraulic translator on the valve piston of the control valve, see also DE-A-102004005452 ,
  • An inventively designed injector for injecting fuel in a combustion chamber of an internal combustion engine comprises an injection valve member which closes or releases at least one injection port and which is driven by a control piston, wherein between the injection valve member and the control piston, a control chamber is formed on one side of a End face of the injection valve member and is limited on the opposite side by an end face of the control piston.
  • the control piston acts as a valve piston of a control valve, via which the control chamber can be connected to a low-pressure region of a fuel return.
  • a further opening phase of the injection valve member begins when the control piston acts as a valve piston of a servo valve and connects the control chamber with the low pressure region of the fuel return.
  • the essence of the invention lies in a combination of direct control and servo valve control of the injection valve member.
  • no interpreter space between actuator and control piston is needed, so that the actuator can be built compact and so requires less space.
  • control space of the injector is hydraulically connected to a valve space of the control valve. Due to the hydraulic connection of the control chamber with the valve chamber, the same pressure prevails in the control chamber and in the valve chamber when the control valve is closed. With the control valve open, fuel can flow from the control chamber via the valve chamber into the fuel return, so that the pressure in the control chamber drops to return pressure. As a result, the opening speed of the injection valve member is increased. In addition, the stroke of the injection valve member is increased by lowering the pressure in the control chamber.
  • a throttle element is received in the hydraulic connection of the control chamber with the valve chamber of the control valve. By the throttle element pressure fluctuations are damped, so that a repelling of the injection valve is prevented.
  • the hydraulic connection of the control chamber with the valve chamber can be designed, for example, as a channel in the injector housing. In a preferred embodiment, however, the hydraulic connection of the control chamber with the valve chamber is designed as a bore in the control piston. Advantage of the bore in the control piston is that no additional channel must be made in the housing and thus the housing can be made smaller.
  • the actuator with which the injector is operated a piezoelectric actuator. Since the actuator heats up in operation and expands due to the temperature increase, it is preferred to ensure the function of the injector that the actuator is accommodated in a housing which is made of a material whose thermal expansion coefficient corresponds to that of the actuator. Suitable material is, for example, Invar.
  • a compensation element is accommodated in a preferred embodiment between the actuator and the housing.
  • a material for the compensation element is for example aluminum
  • the housing of a material having a coefficient of thermal expansion which corresponds to that of the actuator and optionally the compensation element is avoided that the control valve does not close tightly during operation of the injector and an associated heating of the actuator.
  • the actuator with which the injector is driven a magnetic actuator with an armature and a magnetic coil.
  • the control piston is connected to the armature of the magnetic actuator.
  • the control piston is force-balanced in a preferred embodiment.
  • a shoulder is formed on the control piston, which protrudes into the valve space and whose cross-sectional area corresponds to the cross-sectional area of an end face of the control piston which delimits the control space, the shoulder and the end face facing each other.
  • the advantage of the inventively embodied injector is that a direct control of the injection valve member can be realized while the compact design of the injector.
  • FIG. 1 shows an inventively designed fuel injector with piezoelectric actuator.
  • a fuel injector 1 comprises an injection valve member 3, which is guided in a guide 5 in a lower housing part 7. At the injection valve member 3, a sealing edge 9 is formed, which is adjustable in a seat 11 to close at least one injection port 13. In addition to the embodiment shown here with an injection opening 13, it is also possible for the fuel injector 1 to have a plurality of injection openings 13.
  • the injection valve member 3 is enclosed by a nozzle chamber 15, into which an inlet channel 17 opens.
  • the inlet channel 17 is connected via a fuel inlet 19 with a high pressure accumulator of a common rail system.
  • control chamber 23 With its injection opening 13 opposite end of the injection valve member 3 defines an upper end face 21 a control chamber 23. On the upper end face 21 of the control chamber 23 is bounded by a lower end face 25 of a control piston 27. Via a throttle element 29, the control chamber 23 is connected to the inlet channel 17.
  • a sealing edge 31 of a control valve 33 is formed, which is adjustable in a seat 35.
  • a control valve 33 is a connection of a valve chamber 37 in a return channel 39 can be closed or released.
  • the valve chamber 37 is connected to the inlet channel 17.
  • the control chamber 23 is connected via a hydraulic connection 43 to the valve chamber 37.
  • the hydraulic connection 43 is designed as a bore in the control piston 27.
  • a transverse bore 45 is formed in the control piston, which opens in the valve chamber 37.
  • a bore 47 is formed in the axial direction in the control piston 27, which opens on the one hand in the transverse bore 45 and on the other hand in the control chamber 23.
  • a throttle element 49 is formed in the hydraulic connection 43.
  • the control piston 27 is connected to an actuator 51, which is designed as a piezoelectric actuator.
  • the actuator 51 is connected to a plate 53.
  • the actuator 51 is unlocked by a spring element 55, which is connected to the control piston 27 on the one hand and the plate 53 on the other.
  • the spring element 55 is preferably designed as a tube spring tension spring.
  • the actuator 51 is accommodated in a housing 57, which is preferably made of a material having a thermal expansion coefficient corresponding to the coefficient of thermal expansion of the actuator 51.
  • a compensation element 59 is received between the plate 53, which is connected to the actuator 51, and the housing 57.
  • the compensating element 59 is made of aluminum, for example.
  • the housing 57 forms an actuator chamber 61, in which the actuator 51 is accommodated.
  • the actuator chamber 61 of the return channel 39 opens.
  • the actuator 51 is surrounded by under standing pressure return fuel. From the actuator chamber 51, the fuel flows via a fuel return 63 in the low pressure region.
  • the fuel injector 1 is operated inversely. This means that the at least one injection opening 13 is closed when the actuator 51 is energized and the actuator 51 extended in length and the energization of the actuator 51 is released to release the at least one injection opening 13 and to start the injection process so that the actuator 51 contracts.
  • the energization of the actuator 51 is stopped. As a result, the actuator 51 contracts.
  • the control piston 27 connected to the actuator 51 is moved in the direction of the actuator 51.
  • the lower end face 25 of the control piston 27 moves from the control chamber 23.
  • the volume in the control chamber 23 is increased. Due to the increasing volume of the control chamber 23, the pressure in the control chamber 23 decreases, so that a lower pressure force acts on the upper end face 21 of the injection valve member.
  • system pressure acts on a pressure edge 65 on the injection valve member 3 due to the fuel under system pressure in the nozzle chamber 15.
  • the injection valve member 3 lifts with the sealing edge 9 out of its seat 11 and releases the at least one injection opening.
  • the decrease of the pressure in the control chamber 23 is achieved in that the fuel supply from the supply line 27 is delayed by the throttle element 29.
  • the actuator 51 is energized. As a result, the actuator 51 expands. By expanding the actuator 51, the control piston 27 is moved in the direction of the injection valve member 3. The sealing edge 31 is placed in the seat 35 and thus the control valve 33 is closed. Via the throttle element 41, fuel under system pressure flows into the valve chamber 37 and via the hydraulic connection 43 into the control chamber 23. At the same time, fuel under system pressure flows directly into the control chamber 23 via the throttle element 29. The two inlets into the control chamber 23 Control chamber 23 filled quickly and a quick pressure build-up in the control chamber 23 is achieved. The rapid pressure build-up in the control chamber 23 causes the injection valve member 3 is placed with the sealing edge 9 quickly in the seat 11. A quick closing of the injection port 13 is thus possible.
  • FIG. 2 shows a fuel injector designed according to the invention with a magnetic actuator.
  • the fuel injector 1 is actuated by a solenoid actuator 71 instead of by an actuator 51 designed as a piezoactuator.
  • the magnetic actuator 71 includes a coil 73 received in a core 75. Furthermore, the magnetic actuator 71 comprises an armature 77, which is connected to the control piston 27.
  • the injection opening 13 at the in FIG. 2 released fuel injector when the coil 73 is energized.
  • a support 79 is formed on the injection valve member 3, against which a spring element 81 is supported. With the other side, the spring element 81 is supported against a wall 83 of the control chamber 23.
  • the spring element 81 is preferably designed as a compression spring coil spring.
  • the energization of the coil is canceled.
  • the magnetic field is canceled and the armature 77 can move away from the coil 73.
  • This movement of the armature 77 is supported by a spring element 85, which is supported with one side against the Injektorgeophuse 87 and on the other hand against the armature 77.
  • the spring element 85 is preferably designed as a compression spring coil spring.
  • the fuel also flows via the hydraulic connection 43 into the control chamber 23.
  • a pressure builds up again in the control chamber 23 until system pressure is reached.
  • an increased pressure force acts on the upper end face 21 on the injection valve member 3.
  • the injection valve member 3 is moved in the direction of the injection opening 13 until it is in the seat 11 with its sealing edge 9 and thus closes the injection opening 13.
  • the hydraulic connection 43 which is formed in the control piston 27, it is also possible, the hydraulic connection 43, as in FIG. 2 shown in dashed lines, form in the injector 87. Furthermore, it is also possible, both the hydraulic connection 43 in the control piston 27 and the in FIG. 2 dashed hydraulic connection 43 in the injector 87 form. By the two hydraulic connections 43, the flow cross section is increased, so that the fuel from the control chamber 23 can flow faster and the control chamber 23 can be filled faster.
  • the control piston 27 is made of an upper portion 89, a middle portion 91 and a lower portion 93.
  • the upper portion 89 is made in a diameter d 1 , the middle portion in a diameter d 2 and the lower portion in a diameter d 3 .
  • a shoulder 95 is formed at the central portion 91. The transition from the middle portion 91 to the lower portion 93 via a conical portion through which the sealing edge 31 is formed.

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 (12)

  1. Injecteur pour l'injection de carburant dans une chambre de combustion d'un moteur à combustion interne, comprenant un organe de soupape d'injection (3) qui, sous la commande d'un actionneur (51, 71), ferme ou ouvre au moins une ouverture d'injection (13), dans lequel l'actionneur (51, 71) coopère avec un piston de commande (27), et dans lequel un espace de commande (23) est réalisé entre l'organe de soupape d'injection (3)et le piston de commande (27), lequel est limité d'un côté par une surface frontale supérieure (21) de l'organe de soupape d'injection (3) et du côté opposé par une surface frontale inférieure (25) du piston de commande (27), caractérisé en ce que le piston de commande (27) est réalisé sous forme de piston de soupape d'une soupape de commande (33), par le biais duquel l'espace de commande (23) peut être connecté à une région basse pression d'un circuit de retour de carburant (63).
  2. Injecteur selon la revendication 1, caractérisé en ce que l'espace de commande (23) est connecté à un espace de soupape (37) de la soupape de commande (33) par une connexion hydraulique (43).
  3. Injecteur selon la revendication 2, caractérisé en ce que l'espace de soupape (37) de la soupape de commande (33) est connecté au circuit de retour de carburant (63) de la région basse pression lorsque la soupape de commande (33) est ouverte.
  4. Injecteur selon la revendication 2 ou 3, caractérisé en ce qu'un élément d'étranglement (49) est reçu dans la connexion hydraulique (43) de l'espace de commande (23) avec l'espace de soupape (37) de la soupape de commande (33).
  5. Injecteur selon l'une quelconque des revendications 2 à 4, caractérisé en ce que la connexion hydraulique (43) de l'espace de commande (23) avec l'espace de soupape (37) est réalisée sous forme d'alésage (45, 47) dans le piston de commande (27).
  6. Injecteur selon l'une quelconque des revendications 1 à 5, caractérisé en ce que l'actionneur (51, 71) est connecté fixement au piston de commande (27).
  7. Injecteur selon l'une quelconque des revendications 1 à 6, caractérisé en ce que l'actionneur (51) est un actionneur piézoélectrique.
  8. Injecteur selon la revendication 6, caractérisé en ce que l'actionneur (51) est reçu dans un boîtier (57) qui est fabriqué en un matériau dont le coefficient de dilatation thermique correspond à celui de l'actionneur (51).
  9. Injecteur selon la revendication 6 ou 7, caractérisé en ce qu'un élément de compensation (59) est reçu entre l'actionneur (51) et le boîtier (57).
  10. Injecteur selon l'une quelconque des revendications 1 à 6, caractérisé en ce que l'actionneur est un actionneur magnétique (71) avec un induit (77) et une bobine (73).
  11. Injecteur selon la revendication 10, caractérisé en ce que le piston de commande (27) est connecté à l'induit (77) de l'actionneur magnétique (71).
  12. Injecteur selon la revendication 10 ou 11, caractérisé en ce qu'un épaulement (95) est réalisé sur le piston de commande (27), lequel pénètre dans l'espace de soupape (37) et dont la surface en section transversale correspond à la surface en section transversale de la surface frontale inférieure (25) du piston de commande (27), qui limite l'espace de commande (23), l'épaulement (95) et la surface frontale inférieure (25) du piston de commande (27) étant en regard l'un de l'autre de sorte que le piston de commande (27) soit équilibré en force.
EP20070111696 2006-08-07 2007-07-04 Injecteur de carburant doté d'une commande à aiguille directe et assistance par servosoupape Expired - Fee Related EP1887213B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200610036779 DE102006036779A1 (de) 2006-08-07 2006-08-07 Kraftstoffinjektor mit direkter Nadelsteurung und Servoventil-Unterstützung

Publications (3)

Publication Number Publication Date
EP1887213A2 EP1887213A2 (fr) 2008-02-13
EP1887213A3 EP1887213A3 (fr) 2009-05-13
EP1887213B1 true EP1887213B1 (fr) 2010-12-29

Family

ID=38667116

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070111696 Expired - Fee Related EP1887213B1 (fr) 2006-08-07 2007-07-04 Injecteur de carburant doté d'une commande à aiguille directe et assistance par servosoupape

Country Status (2)

Country Link
EP (1) EP1887213B1 (fr)
DE (2) DE102006036779A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2941745A3 (fr) * 2009-02-02 2010-08-06 Renault Sas Dispositif d'injection de liquide, notamment de carburant.
FR2941746A1 (fr) * 2009-02-02 2010-08-06 Renault Sas Dispositif d'injection de liquide, notamment de carburant, a actionneur electroactif.

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19954288A1 (de) * 1999-11-11 2001-05-17 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
DE10334209A1 (de) * 2003-07-26 2005-02-10 Robert Bosch Gmbh Kraftstoff-Einspritzvorrichtung für eine Brennkraftmaschine
DE10353045A1 (de) * 2003-11-13 2005-06-23 Siemens Ag Kraftstoffeinspritzventil
DE102004005452B4 (de) * 2004-02-04 2014-01-09 Robert Bosch Gmbh Düsenhalterkombination mit direktgesteuertem Einspritzventilglied
DE102004015744A1 (de) 2004-03-31 2005-10-13 Robert Bosch Gmbh Common-Rail-Injektor

Also Published As

Publication number Publication date
DE102006036779A1 (de) 2008-02-14
EP1887213A3 (fr) 2009-05-13
DE502007006077D1 (de) 2011-02-10
EP1887213A2 (fr) 2008-02-13

Similar Documents

Publication Publication Date Title
EP1387940B1 (fr) Soupape d'injection de carburant pour moteurs a combustion
EP1771650B1 (fr) Injecteur de carburant comportant un multiplicateur a deux etages
EP2052148B1 (fr) Injecteur de carburant avec commande directe du pointeau et servosoupape d'assistance
EP2867517B1 (fr) Injecteur de carburant pour moteurs à combustion interne
EP1342005B1 (fr) Systeme d'injection de carburant pour moteurs a combustion interne
EP1865192B1 (fr) Injecteur de carburant doté d'une assistance adaptative à la direction
EP2510215B1 (fr) Injecteur de carburant
EP1387937B1 (fr) Soupape d'injection de carburant pour moteurs a combustion, comprenant une chambre d'amortissement reduisant les oscillations de pression
DE10060812A1 (de) Kraftstoffeinspritzsystem für Brennkraftmaschinen
WO2008110408A1 (fr) Injecteur de carburant à soupape de commande améliorée
EP1872008B1 (fr) Injecteur de carburant s'ouvrant a deux niveaux
EP1887213B1 (fr) Injecteur de carburant doté d'une commande à aiguille directe et assistance par servosoupape
WO2002073028A2 (fr) Soupape a siege/coulisse comportant une tige de compensation de pression
EP1983186B1 (fr) Elément de commande à compensation de pression
EP1939441A2 (fr) Injecteur de carburant
DE102006026399A1 (de) Kraftstoffinjektor mit Servounterstützung
EP2138709B1 (fr) Injecteur de carburant actionné directement
EP2204571B1 (fr) Injecteur de carburant doté d'un actionneur piézoélectrique
EP1356200A1 (fr) Distributeur 3/2
DE102006050164A1 (de) Kraftstoffinjektor mit hydraulischer Übersetzung
EP1276983B1 (fr) Soupape servant a diriger des liquides
DE102006047935A1 (de) Kraftstoffinjektor für eine Brennkraftmaschine
EP2229527B1 (fr) Soupape de commande pour injecteurs
EP2628939B1 (fr) Soupape d'injection de combustible
DE102007001365A1 (de) Injektor mit Steuer- und Schaltkammer

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK YU

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR MK RS

17P Request for examination filed

Effective date: 20091113

AKX Designation fees paid

Designated state(s): DE FR GB IT

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REF Corresponds to:

Ref document number: 502007006077

Country of ref document: DE

Date of ref document: 20110210

Kind code of ref document: P

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502007006077

Country of ref document: DE

Effective date: 20110210

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20110930

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502007006077

Country of ref document: DE

Effective date: 20110930

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 10

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 11

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20190924

Year of fee payment: 13

Ref country code: IT

Payment date: 20190723

Year of fee payment: 13

Ref country code: FR

Payment date: 20190724

Year of fee payment: 13

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20190725

Year of fee payment: 13

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502007006077

Country of ref document: DE

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20200704

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200731

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200704

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20210202

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20200704