EP1203151B1 - Electrovanne bietagee destinee a un injecteur d'un moteur a combustion - Google Patents

Electrovanne bietagee destinee a un injecteur d'un moteur a combustion Download PDF

Info

Publication number
EP1203151B1
EP1203151B1 EP00958208A EP00958208A EP1203151B1 EP 1203151 B1 EP1203151 B1 EP 1203151B1 EP 00958208 A EP00958208 A EP 00958208A EP 00958208 A EP00958208 A EP 00958208A EP 1203151 B1 EP1203151 B1 EP 1203151B1
Authority
EP
European Patent Office
Prior art keywords
valve
armature
spring
closing
injector
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
EP00958208A
Other languages
German (de)
English (en)
Other versions
EP1203151A1 (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 EP1203151A1 publication Critical patent/EP1203151A1/fr
Application granted granted Critical
Publication of EP1203151B1 publication Critical patent/EP1203151B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • 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
    • 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
    • F02M63/0017—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means
    • F02M63/0021—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means characterised by the arrangement of mobile armatures
    • F02M63/0022—Valves characterised by the valve actuating means electrical, e.g. using solenoid using electromagnetic operating means characterised by the arrangement of mobile armatures the armature and the valve being allowed to move relatively to each other
    • 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
    • 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
    • F02M63/0205—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 for cutting-out pumps or injectors in case of abnormal operation of the engine or the injection apparatus, e.g. over-speed, break-down of fuel pumps or injectors ; for cutting-out pumps for stopping the engine
    • F02M63/022—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 for cutting-out pumps or injectors in case of abnormal operation of the engine or the injection apparatus, e.g. over-speed, break-down of fuel pumps or injectors ; for cutting-out pumps for stopping the engine by acting on fuel control mechanism

Definitions

  • the invention is based on an injector for an injection system for internal combustion engines with a solenoid valve which controls the outflow of fuel through a discharge channel from a valve control chamber, wherein the solenoid valve means for closing the discharge channel, one of an electric magnet actuated and by the means for Closing the drainage channel in operatively connected armature, a first valve spring and a second valve spring and a first stroke stop and a second stroke stop has.
  • Two-stage solenoid valves for injectors of injection systems are known. With the first opening stage of the solenoid valve is to be achieved that the nozzle needle of the injection nozzle opens slowly, so that the precise design of small pilot injection quantities is facilitated. The second opening stage is the main injection. In this case, a large opening speed of the nozzle needle is desired.
  • the armature of the solenoid valve via two in Row switched compression springs against the opening direction of the solenoid valve acted upon. Until a first stroke stop is reached, only a first compression spring acts counter to the opening direction of the valve on the armature; After the armature has passed the first stroke stop, in addition a second compression spring with the same direction of action acts on the armature.
  • a disadvantage of this design is that due to the series connection, the overall length of the solenoid valve is large. This is particularly problematic in modern, compact design engines and modern vehicles because the available space is usually limited.
  • a two-stage actuated by a piezo actuator valve of an injector is from the DE OS 1974 1850 known.
  • this solenoid valve two valve springs are also connected in series, wherein between the two valve springs, an intermediate ring is arranged.
  • This valve also has the above-mentioned disadvantages.
  • the invention has for its object to provide a two-stage solenoid valve for an injector, which is compact and whose performance at different frequencies is good.
  • first and second valve springs are compression or tension springs
  • a valve spring can be arranged on each side of the armature, so that the length of the valve springs do not add additively to the overall length of the armature to the overall length of the solenoid valve.
  • at least one valve spring can be arranged in parallel, in particular concentrically to the armature, so that the overall structural length of the solenoid valve is correspondingly reduced.
  • valve spring is a compression spring and the second valve spring is a tension spring
  • both valve springs can be arranged in parallel, in particular concentric to the armature, so that further reduces the overall length of the solenoid valve.
  • the valve springs whose series connection is avoided, which has a favorable effect on the resonance behavior of the solenoid valve.
  • the first valve spring between a housing of the injector and the end of the armature facing away from the means for closing the drainage channel is tensioned compression spring
  • the second valve spring is a tensioned between the housing of the injector and the end of the anchor facing the means for closing the drainage channel, so that a simple structure and at the same time small space requirement of the solenoid valve is achieved.
  • the small footprint is iu. a. on the arrangement of the second valve spring between means for. Close the drainage channel and the anchor closing.
  • the design of small pilot injection amounts despite Hoher: opening speed of the nozzle needle is made possible in the main injection.
  • the second valve spring acts on the armature via a displaceable intermediate ring, and that the path of the intermediate ring is limited by the first stroke stop, so that the first stroke stop can be easily and precisely fixed.
  • the means for closing the discharge channel via a push rod with the armature are in operative connection, so that a spatial separation between the means for closing the drainage channel and the anchor are present. In addition, this is more space for the second valve spring available.
  • the second valve spring and / or the intermediate ring is arranged concentrically to the push rod, so that the space requirement of the solenoid valve according to the invention further decreases.
  • the means for closing the drainage channel are a ball and a ball seat in the housing or arranged at the end remote from the armature rod valve head and a correspondingly shaped valve seat in the housing, so that in a simple manner a reliable seal the drainage channel takes place.
  • An embodiment of the invention provides that the injection system is a common-rail injection system, so that the advantages according to the invention also benefit these injection systems.
  • FIG. 1 an injector is shown schematically.
  • fuel 3 is fed via an inlet channel 5 to an injection nozzle 7 and via an inlet throttle 9 into a valve control chamber 11.
  • the valve control chamber 11 is connected via a discharge channel 12 and an outlet throttle 13, which can be opened by a solenoid valve 15, with a fuel return 17.
  • the fuel 3 is in FIG. 1 shown as a black area.
  • the valve control chamber 11 is bounded by a valve piston 19.
  • To the valve piston 19 includes a nozzle needle 21, which prevents the pressurized fuel 3 flows between the injections in the combustion chamber, not shown.
  • the nozzle needle 21 has a cross-sectional change 23 from a larger diameter 25 to a smaller diameter 27. With its larger diameter 25, the nozzle needle 21 is guided in a housing 29.
  • the change in cross section 23 delimits a pressure chamber 31 of the injection nozzle 7
  • control and leakage quantities can be up to 50 mm 3 / stroke. They are returned via the fuel return 17 back into the fuel tank, not shown.
  • FIG. 2 an inventive solenoid valve 15 is shown. Between the injections, the outlet throttle 13 is closed by a ball 41 of the solenoid valve 15. This is done indirectly via an armature 43, a pressure rod 44 connected to this and a first valve spring 45 by the ball 41 is pressed into a ball seat 47 of the housing 29. Between the ball seat 47 and armature 43, a second valve spring 57 is arranged, which exerts an opposing force on the armature 43 via an intermediate ring 59 of the first valve spring 45.
  • the intermediate ring 59 is displaceable in the direction of the longitudinal axis of the armature 43 up to a first stroke stop 61.
  • FIG. 2 an embodiment is shown in which the intermediate ring 59 is centered by means of a recess 63 through the first stroke stop 61.
  • the power with the Ball 41 is pressed in the illustrated operating state of the solenoid valve 15 in the ball seat 47 is the difference in the forces of the first valve spring 45 and the second valve spring 57th
  • an electric magnet 49 of the solenoid valve 15 is driven with a starting current I v .
  • the thereby acting on the armature 43 force of the electric magnet 49 is dimensioned such that it exceeds the difference of the forces acting on the armature 43 forces of the first valve spring 45 and the second valve spring 57.
  • the armature 43 moves in the direction of the electric magnet 49 until the intermediate ring 59 rests on the first stroke stop 61.
  • the entire spring force of the first valve spring 45 counteracts the force exerted on the armature 43 by the electric magnet 15.
  • the spring force of the first valve spring 45 is greater than the force of the electromagnet 15, if through this a current of magnitude I v flows. Therefore, the armature 43 opens in the pre-injection only until the intermediate ring 59 rests on the first stroke stop 61; this stroke corresponds to the distance marked 65 in FIG. 2 , But there are also other Hubanelle conceivable.
  • the rebounding of the second valve spring 57 may also be effected by a tie rod connected to the second valve spring. be limited.
  • the term of the first stroke stop is understood in the context of the present invention so that after reaching a certain stroke of the armature 43, the second valve spring 57, the armature 43 is no longer applied.
  • the opening speed of in FIG. 1 illustrated nozzle needle 21 is determined by the flow difference between the inlet throttle 9 and outlet throttle 13.
  • the outlet throttle 13 and ball seat 47 and ball 41 are connected in series flow resistances.
  • the flow resistance of ball seat 47 and ball 41 is large because of the small stroke 65 of the armature 43. Therefore, the opening speed of the nozzle needle 21 during the pilot injection is relatively low. This facilitates the design of small pilot injection quantities.
  • the increased attraction current I A is reduced to a lower holding current I H of. This is possible because the air gap of the magnetic circuit is now is lower.
  • the armature 43 is pressed by the force of the first valve spring 45 in the direction of the ball 41 and the ball 41 closes the outlet throttle 13.
  • the second valve spring 57 brakes as soon as the stroke 65 is reached, the Anchor 43 and prevents heavy wear of the ball seat 47 and the ball 41st
  • the closing speed of the nozzle needle 21 is determined by the flow rate of the inlet throttle 9. The injection ends when the nozzle needle 21 rests on the nozzle needle seat 35.
  • FIG. 3 the timing of the operation of the solenoid valve and the injection nozzle is qualitatively represented.
  • FIG. 3a the armature stroke 69 of the solenoid valve over time 71 is shown.
  • On the ordinate is the armature stroke in the pilot injection is denoted by "v” and the armature stroke in the main injection with "h". It can be seen from the comparison of the slopes that the opening speed of the solenoid valve is greater in the main injection than in the pilot injection. This can be achieved for example by a larger compared to the pre-injection larger armature current.
  • FIG. 3b the stroke of the injector 73 is shown over time 71.
  • the vertical dashed lines was trying to represent the time delay between opening the actuation of the solenoid valve and the opening or closing of the injector.

Landscapes

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

Claims (8)

  1. Injecteur pour un système d'injection de moteur à combustion interne comportant une électrovanne (15) commandant la sortie de carburant (3) à partir d'un canal de sortie (12) d'une chambre de commande de soupape (11),
    l'électrovanne (15) comportant des moyens de fermeture (41, 47) du canal de sortie (12), un induit (43), actionné par l'électroaimant (48), et coopérant avec des moyens pour fermer (41, 47) le canal de sortie (12), ainsi qu'un premier ressort de soupape (45) développant une force de ressort, supérieure et opposée à la force de ressort d'un second ressort de soupape (57),
    la course de l'induit (41) étant limitée par une seconde butée de course (47),
    le premier ressort de soupape (45) sollicitant l'induit (43) dans le sens de la fermeture,
    caractérisé en ce que
    le second ressort de soupape (57) sollicite l'induit (43) dans le sens de l'ouverture entre la position de fermeture de l'électrovanne (15) jusqu'à atteindre une première butée de course (61), l'électrovanne (15) étant partiellement ouverte.
  2. Injecteur selon la revendication 1,
    caractérisé en ce que
    le premier ressort de soupape (45) comporte un ressort de compression mis en tension entre le boîtier (29) de l'injecteur et l'extrémité de l'induit, opposée aux moyens de fermeture (41, 47) du canal de sortie (12),
    le second ressort de soupape (57) étant un ressort de compression mis en tension entre le boîtier (29) de l'injecteur et l'extrémité de l'induit tournée vers les moyens de fermeture (41, 47) du canal de sortie (12).
  3. Injecteur selon la revendication 2,
    caractérisé en ce que
    le second ressort de soupape (57) sollicite l'induit (43) par une bague intermédiaire coulissante (59) et la course de la bague intermédiaire (59) est limitée par la première butée de course (61).
  4. Injecteur selon l'une des revendications précédentes,
    caractérisé en ce que
    les moyens de fermeture (41, 47) du canal de sortie (12) coopèrent avec l'induit (43) par l'intermédiaire d'un poussoir (44).
  5. Injecteur selon la revendication 3,
    caractérisé en ce que
    le second ressort de soupape (57) et/ou la bague intermédiaire (59) sont concentriques au poussoir (44).
  6. Injecteur selon l'une des revendications 1 à 5,
    caractérisé en ce que
    les moyens de fermeture du canal de sortie (12) sont constitués par une tête de soupape prévue à l'extrémité du poussoir (44), à l'opposé de l'induit (43) et un siège de soupape de forme correspondante dans le boîtier (29).
  7. Injecteur selon l'une des revendications précédentes,
    caractérisé en ce que
    les moyens de fermeture (41, 47) du canal de sortie (12) sont constitués par une bille (41) et un siège de bille (47) dans le boîtier (29).
  8. Injecteur selon l'une des revendications précédentes,
    caractérisé en ce que
    le système d'injection est un système d'injection à rampe commune.
EP00958208A 1999-08-09 2000-08-02 Electrovanne bietagee destinee a un injecteur d'un moteur a combustion Expired - Lifetime EP1203151B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19937559 1999-08-09
DE19937559A DE19937559A1 (de) 1999-08-09 1999-08-09 Zweistufiges Magnetventil in kompakter Bauweise für einen Injektor eines Einspritzsystems für Brennkraftmaschinen
PCT/DE2000/002578 WO2001011221A1 (fr) 1999-08-09 2000-08-02 Electrovanne bietagee destinee a un injecteur d'un moteur a combustion

Publications (2)

Publication Number Publication Date
EP1203151A1 EP1203151A1 (fr) 2002-05-08
EP1203151B1 true EP1203151B1 (fr) 2008-02-13

Family

ID=7917741

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00958208A Expired - Lifetime EP1203151B1 (fr) 1999-08-09 2000-08-02 Electrovanne bietagee destinee a un injecteur d'un moteur a combustion

Country Status (8)

Country Link
US (1) US6783086B1 (fr)
EP (1) EP1203151B1 (fr)
JP (1) JP2003524725A (fr)
AT (1) ATE386205T1 (fr)
CZ (1) CZ20011227A3 (fr)
DE (2) DE19937559A1 (fr)
HU (1) HUP0104906A3 (fr)
WO (1) WO2001011221A1 (fr)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10131125A1 (de) * 2001-06-28 2002-09-12 Bosch Gmbh Robert Magnetventil mit gedämpftem, einteiligem Ankerelement
DE10161002A1 (de) * 2001-12-12 2003-07-03 Bosch Gmbh Robert Magnetventil zur Steuerung eines Einspritzventils einer Brennkraftmaschine
DE10230267A1 (de) * 2002-07-05 2004-01-22 Robert Bosch Gmbh Verfahren zur Ansteuerung einer Fluid-Dosiervorrichtung und Common-Rail-Injektor
DE502004007701D1 (de) * 2004-01-21 2008-09-04 Dualon Internat Holding S A Ventil für flüssigkeitseinspritzung
US7156368B2 (en) * 2004-04-14 2007-01-02 Cummins Inc. Solenoid actuated flow controller valve
AT500889B8 (de) * 2004-08-06 2007-02-15 Bosch Gmbh Robert Vorrichtung zum einspritzen von kraftstoff in den brennraum einer brennkraftmaschine
DE102005061409A1 (de) * 2005-12-22 2007-06-28 Robert Bosch Gmbh Elektromagnetisch betätigbares Ventil
JP4576345B2 (ja) * 2006-02-17 2010-11-04 日立オートモティブシステムズ株式会社 電磁式燃料噴射弁
KR101290899B1 (ko) * 2007-11-12 2013-07-29 현대자동차주식회사 자동차용 2단제어 분사노즐장치
DE102007056913A1 (de) * 2007-11-26 2009-05-28 Robert Bosch Gmbh Einspritzdüse für Kraftstoff mit Kugelventil
DE102008002019A1 (de) 2008-05-28 2009-12-03 Robert Bosch Gmbh Verfahren und Vorrichtung zur Ansteuerung eines Magnetventils
DE102009046822A1 (de) 2009-11-18 2011-05-19 Robert Bosch Gmbh Schaltventil mit einem in einem Gehäuse bewegbaren Ventilelement
EP2333297B1 (fr) * 2009-12-11 2013-03-20 Continental Automotive GmbH Ensemble de soupape pour soupape d'injection et soupape d'injection
JP2012202251A (ja) * 2011-03-24 2012-10-22 Denso Corp インジェクタ
JP7208884B2 (ja) * 2019-11-26 2023-01-19 株式会社Soken 燃料噴射装置
DE102020212697B4 (de) 2020-10-08 2022-08-25 Ford Global Technologies, Llc Injektor, Dieselmotor und Kraftfahrzeug
CN114151248B (zh) * 2021-11-19 2023-10-13 哈尔滨工程大学 液氨直冷-柴油双燃料一体化混合动力***

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3500449A1 (de) * 1985-01-09 1986-07-10 Robert Bosch Gmbh, 7000 Stuttgart Magnetventil zur fluidsteuerung
US5605289A (en) * 1994-12-02 1997-02-25 Caterpillar Inc. Fuel injector with spring-biased control valve
JP3653882B2 (ja) 1996-08-31 2005-06-02 いすゞ自動車株式会社 エンジンの燃料噴射装置
IT1289794B1 (it) * 1996-12-23 1998-10-16 Elasis Sistema Ricerca Fiat Perfezionamenti ad una valvola di dosaggio a comando elettromagnetico per un iniettore di combustibile.
DE19708104A1 (de) 1997-02-28 1998-09-03 Bosch Gmbh Robert Magnetventil
DE19741850A1 (de) * 1997-09-23 1999-03-25 Bosch Gmbh Robert Eispritzventil
IT1295462B1 (it) * 1997-10-02 1999-05-12 Elasis Sistema Ricerca Fiat Iniettore di combustibile a comando elettromagnetico per motori a combustione interna.
IT1296144B1 (it) 1997-11-18 1999-06-09 Elasis Sistema Ricerca Fiat Valvola di dosaggio registrabile per un iniettore di combustibile per motori a combustione interna.

Also Published As

Publication number Publication date
WO2001011221A1 (fr) 2001-02-15
EP1203151A1 (fr) 2002-05-08
DE19937559A1 (de) 2001-03-01
DE50014969D1 (de) 2008-03-27
JP2003524725A (ja) 2003-08-19
HUP0104906A3 (en) 2002-05-28
ATE386205T1 (de) 2008-03-15
CZ20011227A3 (cs) 2002-02-13
HUP0104906A2 (hu) 2002-04-29
US6783086B1 (en) 2004-08-31

Similar Documents

Publication Publication Date Title
EP1203151B1 (fr) Electrovanne bietagee destinee a un injecteur d'un moteur a combustion
EP0745764B1 (fr) Soupape d'injection de combustible pour moteurs à combustion interne
EP1332282B1 (fr) Electrovanne pour piloter une soupape d'injection de moteur a combustion interne
EP1387940B1 (fr) Soupape d'injection de carburant pour moteurs a combustion
EP1259729B1 (fr) Electrovanne destinee a la commande d'une soupape d'injection d'un moteur a combustion interne
WO1998031933A1 (fr) Dispositif d'injection de carburant pour moteurs a combustion interne
EP1190169A2 (fr) Soupape de commande pour un injecteur d'un systeme d'injection de carburant destine a des moteurs a combustion interne, permettant une augmentation de pression dans la chambre de commande
EP3478957B1 (fr) Soupape d'injection d'un carburant gazeux
EP1144857A1 (fr) Soupape de distribution a double commutation comprenant un renforcement hydraulique de l'actionneur
WO2008061844A1 (fr) Injecteur de carburant
EP1387937A1 (fr) Soupape d'injection de carburant pour moteurs a combustion, comprenant une chambre d'amortissement reduisant les oscillations de pression
WO2002092991A1 (fr) Electrovanne de commande de soupape d'injection de moteur a combustion interne
DE102016220326A1 (de) Ventil zum Zumessen eines gasförmigen oder flüssigen Kraftstoffs
EP3364015B1 (fr) Soupape de commutation électromagnétique et pompe haute pression à carburant
WO2006097398A1 (fr) Dispositif d'injection de carburant
DE10141221B4 (de) Druck-Hub-gesteuerter Injektor für Kraftstoffeinspritzsysteme
DE102012221157A1 (de) Druckregelventil für einen Hochdruckspeicher eines Verbrennungsmotors
WO2008128884A1 (fr) Injecteur de carburant avec électrovanne
EP1911966A2 (fr) Injecteur de carburant pour un moteur à combustion interne
DE102005014180A1 (de) Kraftstoffeinspritzeinrichtung für eine Brennkraftmaschine
WO2002016760A1 (fr) Systeme d'injection de carburant pour moteurs a combustion interne
DE102013224960A1 (de) Kraftstoffinjektor
EP1970557A2 (fr) Soupape pour injecteurs de carburant
EP1187986A2 (fr) Injecteur pour un systeme d'injection de carburant a rampe d'alimentation commune, comportant un canal d'alimentation commande par tiroir et un accouplement direct du piston de commande et du pointeau
DE10059399A1 (de) Vorrichtung zur Verbesserung der Einspritzabfolge bei Kraftstoffeinspritzsystemen

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: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

17P Request for examination filed

Effective date: 20020311

17Q First examination report despatched

Effective date: 20060302

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): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REF Corresponds to:

Ref document number: 50014969

Country of ref document: DE

Date of ref document: 20080327

Kind code of ref document: P

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

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080524

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080213

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
ET Fr: translation filed
REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

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

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080714

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080513

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080213

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080213

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080213

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: 20081114

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

Ref country code: MC

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

Effective date: 20080831

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Effective date: 20080802

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

Ref country code: LI

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

Effective date: 20080831

Ref country code: CH

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

Effective date: 20080831

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

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080213

Ref country code: BE

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

Effective date: 20080831

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 FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080213

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

Ref country code: AT

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

Effective date: 20080802

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

Ref country code: FR

Payment date: 20090819

Year of fee payment: 10

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

Ref country code: GB

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

Effective date: 20080802

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

Ref country code: LU

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

Effective date: 20080802

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

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080514

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20110502

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: 20100831

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

Ref country code: DE

Payment date: 20141024

Year of fee payment: 15

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50014969

Country of ref document: DE

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: 20160301