EP1259729B1 - Electrovanne destinee a la commande d'une soupape d'injection d'un moteur a combustion interne - Google Patents

Electrovanne destinee a la commande d'une soupape d'injection d'un moteur a combustion interne Download PDF

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Publication number
EP1259729B1
EP1259729B1 EP01994586A EP01994586A EP1259729B1 EP 1259729 B1 EP1259729 B1 EP 1259729B1 EP 01994586 A EP01994586 A EP 01994586A EP 01994586 A EP01994586 A EP 01994586A EP 1259729 B1 EP1259729 B1 EP 1259729B1
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EP
European Patent Office
Prior art keywords
armature
solenoid valve
valve
plate
bolt
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
EP01994586A
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German (de)
English (en)
Other versions
EP1259729A2 (fr
Inventor
Rainer Haeberer
Hermann Koch-Grober
Holger Rapp
Christoffer Uhr
Andreas Rettich
Wolfgang Fleiner
Markus Rueckle
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
Priority claimed from DE10113008A external-priority patent/DE10113008A1/de
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1259729A2 publication Critical patent/EP1259729A2/fr
Application granted granted Critical
Publication of EP1259729B1 publication Critical patent/EP1259729B1/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
    • 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
    • F02M63/0031—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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
    • F02M2200/304—Fuel-injection apparatus having mechanical parts, the movement of which is damped using hydraulic means
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
    • F02M2200/306—Fuel-injection apparatus having mechanical parts, the movement of which is damped using mechanical means
    • 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
    • F02M2547/003—Valve inserts containing control chamber and valve piston

Definitions

  • the invention relates to a solenoid valve for controlling an injection valve of an internal combustion engine according to the preamble of claim 1.
  • Such, for example, from DE 197 08 104 A1 known solenoid valve is used to control the fuel pressure in the control pressure chamber of an injection valve, such as an injector of a common rail injection system.
  • the fuel pressure in the control pressure chamber controls the movement of a valve piston with which an injection opening of the injection valve is opened or closed.
  • the known solenoid valve has a solenoid disposed in a housing part, a movable armature and an armature moved, acted upon by a closing spring in the closing direction control valve member which cooperates with a valve seat of the solenoid valve and thus controls the fuel drain from the control pressure chamber.
  • a known disadvantage of the solenoid valves is the so-called anchor bounce.
  • the solenoid valve according to the invention with the characterizing features of claim 1 avoids the disadvantages occurring in the prior art.
  • the armature with armature plate, anchor bolt, return spring and overstroke stop outside the assembly line of the injector pre-assembled and the required displacement of the armature plate can be adjusted on the anchor bolt outside the housing of the injector.
  • the pre-assembled armature assembly can then be subsequently installed in the housing of the solenoid valve. A complex conversion of the assembly line is not required.
  • the return spring which presses the anchor plate with a first end in its rest position against a first stop on the anchor bolt, not stationary with the second end in the solenoid valve housing, but on a fixed to the anchor bolt and moving with the anchor bolt support member, is also advantageously achieved that the return spring does not counteract the force acting on the anchor bolt closing spring of the solenoid valve.
  • the spring tension of the closing spring of the solenoid valve can therefore be made smaller. Since the return spring of the closing spring no longer counteracts, the return spring has no influence on the dynamic behavior of the anchor bolt.
  • Fig. 1 shows the upper part of a known from the prior art fuel injection valve 1, which is for use is determined in a fuel injection system, which is equipped with a high-pressure fuel storage, which is continuously supplied by a high-pressure feed pump with high-pressure fuel.
  • the fuel injection valve 1 shown has a valve housing 4 with a longitudinal bore 5, in which a valve piston 6 is arranged, which acts with its one end on a nozzle needle, not shown, valve needle.
  • the valve needle is arranged in a pressure chamber, which is supplied via a pressure bore 8 with fuel under high pressure.
  • the valve needle In an opening stroke of the valve piston 6, the valve needle is raised by the constantly acting on a pressure shoulder of the valve needle high fuel pressure in the pressure chamber against the closing force of a spring.
  • the injection of the fuel takes place in the combustion chamber of the internal combustion engine.
  • the valve needle By lowering the valve piston 6, the valve needle is pressed in the closing direction in the valve seat of the injection valve and the injection process terminated.
  • valve piston 6 is guided at its end facing away from the valve needle in a cylinder bore 11 which is incorporated in a valve member 12 which is inserted into the valve housing 4.
  • the end face 13 of the valve piston 6 includes a control pressure chamber 14, which is connected via an inlet channel with a high-pressure fuel connection.
  • the inlet channel is formed substantially in three parts.
  • a radially leading through the wall of the valve piece 12 bore whose inner walls form part of their length an inlet throttle 15 is connected to the valve piece circumferentially surrounding annulus 16 constantly, which annular space in turn via a inserted into the inlet channel fuel filter in constant communication with the High-pressure fuel connection of a screwed into the valve housing 4 connecting piece 9 is.
  • the annulus 16 is sealed by a sealing ring 39 to the longitudinal bore 5.
  • About the inlet throttle 15 of the control pressure chamber 14 is exposed to the ruling in high-pressure fuel storage high fuel pressure.
  • Coaxially to the valve piston 6 branches off from the control pressure chamber 14 extending in the valve piece 12 bore which forms a flow restrictor 18 provided with fuel drain passage 17 which opens into a discharge chamber 19 which is connected to a fuel low-pressure connection 10, which in turn in a manner not shown is connected to a fuel return of the injection valve 1.
  • the outlet of the fuel drain channel 17 from the valve piece 12 takes place in the region of a conically countersunk part 21 of the outer end face of the valve piece 12.
  • the valve piece 12 is clamped in a flange portion 22 fixed via a screw member 23 with the valve housing 4.
  • a valve seat 24 is formed, with which a control valve member 25 of the injection valve controlling solenoid valve 30 cooperates.
  • the control valve member 25 is coupled to a two-piece armature in the form of an anchor bolt 27 and an armature plate 28, which armature cooperates with an electromagnet 29 of the solenoid valve 30.
  • the solenoid valve 30 further comprises a housing housing part 60 which shelters the electromagnet and which is fixedly connected to the valve housing 4 via screwable connection means 7.
  • the armature plate 28 is mounted under the action of its inertial mass against the biasing force of a return spring 35 dynamically displaceable on the anchor bolt 27 and is pressed by this return spring at rest against a fixed to the anchor bolt sickle plate 26.
  • the return spring 35 With its other end, the return spring 35 is fixed to the housing on a flange 32 of the anchor bolt 27 leading slider 34, with this flange between an attached to the valve piece 12 spacer 38 and the screw member 23 in the valve housing is firmly clamped.
  • the anchor bolt 27 and with it the armature disk 28 and coupled with the anchor bolt control valve member 25 are constantly acted upon by a housing fixedly supporting closing spring 31 in the closing direction, so that the control valve member 25 normally rests in the closed position on the valve seat 24.
  • the armature plate 28 Upon energization of the electromagnet, the armature plate 28 is attracted by the electromagnet while the drain channel 17 is opened to the discharge chamber 19 out.
  • an annular shoulder 33 on the anchor bolt 27 which abuts when the solenoid is energized on the flange 32 and so limits the opening stroke of the control valve member 25.
  • the spacer disc 38 arranged between the flange 32 and the valve piece 12 is used for adjusting the opening stroke.
  • the opening stroke of the control valve member 25 is adjusted by a stop element arranged between the anchor plate 28 and the electromagnet 29.
  • the opening and closing of the injection valve is controlled by the solenoid valve 30 as described below.
  • the anchor bolt 27 is constantly acted upon by the closing spring 31 in the closing direction, so that the control valve member 25 rests in non-energized electromagnet in the closed position on the valve seat 24 and the control pressure chamber 14 is closed to the discharge side 19, so that very quickly there via the inlet channel high Pressure builds up, which is also present in the high-pressure fuel storage.
  • the pressure in the control pressure chamber 14 Over the surface of the end face 13, the pressure in the control pressure chamber 14 generates a closing force on the valve piston 6 and the associated valve needle, which is greater than the forces acting on the other hand in the opening direction as a result of the upcoming high pressure.
  • control pressure chamber 14 If the control pressure chamber 14 is opened by opening the solenoid valve to the discharge side 19, the pressure in the small volume of the control pressure chamber 14 degrades very rapidly, since this pressure via the inlet throttle 15 is disconnected from the high pressure side. As a result, the force acting on the valve needle in the opening direction predominates from the fuel high pressure applied to the valve needle, so that the valve needle moves upward while the at least one injection port is opened for injection. However, closes the solenoid valve 30, the fuel drain passage 17, the pressure in the control pressure chamber 14 can be rebuilt by the inflowing over the inlet channel 15 fuel so that the original closing force is present and the valve needle of the fuel injection valve closes.
  • the closing spring 31 pushes the anchor bolt 27 with the control valve member 25 abruptly against the valve seat 24.
  • An adverse bouncing or ringing of the control valve member is due to the fact that the impact of the anchor bolt on the valve seat causes an elastic deformation thereof, which acts as an energy storage, a portion of the energy is in turn transmitted to the control valve member, which then rebounds off the valve seat 24 together with the anchor bolt.
  • the known solenoid valve shown in Fig. 1 therefore uses a two-piece armature with a decoupled from the anchor bolt 27 anchor plate 28. In this way, while the total impact on the valve seat mass can be reduced, however, the anchor plate 28 can resonate disadvantageously.
  • the thickness of the Kochhubeinstellhunt but also affects the distance of the armature plate 28 from the electromagnet 29. This is the case when, for example, the end face of the solenoid valve housing 60 is clamped against the flange 32. In these cases, an inner and an outer disc is used in place of Kochhubeinstellhunt.
  • the production of the solenoid valve and provided with the solenoid valve injection valve is therefore quite complicated and complicated. A presetting of the overstroke path or the displacement path d of the anchor plate 28 on the anchor bolt 27 outside the Magentventilgephinuses 60 is not possible.
  • Fig. 3 shows a first embodiment of the solenoid valve according to the invention. Shown is only the slider 34 and the anchor with anchor bolt 27, armature plate 28 and return spring 35. The same parts are provided with the same reference numerals.
  • the illustrated armature assembly may be used, for example, in the solenoid valve housing 60 shown in FIG.
  • An important difference from the known arrangement shown in Fig. 2 is that instead of the fixedly arranged in the solenoid valve housing
  • a support member 50 is provided which is fixedly connected to the anchor bolt 27.
  • a support member for example, a fixed to the anchor bolt 27 disc can be provided.
  • the disc is pushed onto the anchor bolt 27 and then firmly connected to the anchor bolt by, for example, welding or gluing. Also other types of attachment we shrinking are possible.
  • the support member 50 is welded to the armature plate 27 on the side facing away from the armature plate 59. The weld 51 on the bottom 59 of the support member 50 can be seen in Fig. 1.
  • the return spring 35 is supported with its one end 61 on the anchor plate 28 and with its other end 62 on that side 57 of the support member 50, which faces the anchor plate 28.
  • the anchor plate 28 is first pushed onto the anchor bolt 27 until the anchor plate strikes a head 55 of the anchor bolt.
  • the head 55 replaces the sickle plate 26 in Fig. 1 and 2 and serves as this as a stop for the anchor plate.
  • the return spring 35 is pushed over the guide piece 65 of the anchor plate 28 until it rests with the end 61 of the anchor plate.
  • the disc-shaped support member 50 is pushed so far onto the anchor bolt 27 that remains between the facing sides 57 and 58 of the support member 50 and the guide stub 65, the required Studentshubweg d. Finally, the support member 50 is fixed in this position on the anchor bolt 27.
  • the armature bolt 27, armature plate 28, return spring 35 and support member 50 existing anchor assembly is then inserted into the slider 34.
  • the anchor bolt 27 is inserted into a central bore 68 of the slider 34.
  • the slider 34 may already be clamped to the flange 36 in the housing 60 of the solenoid valve.
  • no annular shoulder 33 is provided which limits the opening stroke of the anchor bolt by a stop on the slider 34. Instead, the opening stroke is limited by a stop of the anchor bolt head 55 on the electromagnet or a projection of the electromagnet. This is necessary so that the anchor bolt 27 in Fig. 3 can be inserted from above into the slider 34.
  • the side of the slider 34 facing the support part 50 has a recess 52 in which the support part engages.
  • the lower end 67 of the anchor bolt 27 acts on the control valve member 25, which is pressed against the valve seat 24 by the closing force of the spring 31 when the electromagnet is not energized.
  • the side facing away from the anchor plate 28 side 59 of the support member 50 and the weld 51 is spaced from the inner wall of the recess 52 by a gap.
  • a hydraulic damping chamber (The between the support member 50 and the recess 52 compressed fuel which can only escape laterally through the gap, advantageously dampens the impact of the anchor bolt 27 and the control valve member 25 coupled therewith on the valve seat 24.
  • Fig. 4 shows a further embodiment of the invention, which differs from the embodiment shown in Fig. 3 in that the support member 50 is positively fixed to the anchor bolt 27.
  • the support member 50 is formed in this embodiment as a sickle disc with an open recess 56 which is pushed laterally with the open end on the anchor bolt.
  • the anchor bolt 27 has a circumferential groove 54 into which the inner contour of the recess 56 of the sickle disc 50 engages positively.
  • the deferred on the anchor bolt sickle plate 50 is secured perpendicular to the anchor bolt through the recess 52 of the slider 34 in position.
  • the path length by which the anchor bolt is displaced in the axial direction when opening and closing the solenoid valve is significantly smaller than the depth of the recess 52, so that the sickle disc 50 can not accidentally slip out of its position on the anchor bolt 27.
  • Fig. 5 shows a third embodiment which shows a modification of the embodiment shown in Fig. 4.
  • the support member 50 is again formed as a sickle disc, which is pushed with the open end, not shown, on a portion 72 of the anchor bolt 27.
  • the diameter of the portion 72 is formed smaller than the diameter of the guided in the slider 34 portion of the anchor bolt 27 and by a circumferential shoulder 71 delimited therefrom.
  • the return spring 35 is supported at one end on the anchor plate 28. With the other end, the return spring 35 presses the Sickle disc 50 against the formed on the anchor bolt 27 circumferential shoulder 71.
  • the anchor assembly can be used as a preassembled unit in the slider 34, wherein the anchor bolt 27 is inserted into the opening 68 and the sickle plate 50 at least partially penetrates into the recess 52. By the inner contour of the recess 52, the sickle plate 50 is secured against lateral slipping of the anchor bolt.

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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

L'invention concerne une électrovanne destinée à la commande d'une soupape d'injection d'un moteur à combustion interne. Cette électrovanne comprend un électroaimant (29), un induit mobile doté d'une plaque d'ancrage (28) et d'un boulon d'ancrage (27), et un organe de commande (25) qui se déplace avec l'induit et coopère avec un siège de soupape (24) et qui est destiné à ouvrir et fermer un canal de sortie de carburant (17) d'une chambre de pression de commande (14) de la soupape d'injection (1). La plaque d'ancrage (28) est montée sur le boulon d'ancrage (27) de manière à glisser sous l'effet de sa masse inerte dans la direction de fermeture de l'organe de commande de soupape (25) à l'encontre de la force de serrage d'un ressort de rappel (35) agissant sur la plaque d'ancrage (28). Cette électrovalve comprend également un dispositif amortisseur hydraulique qui permet d'amortir une postvibration de la plaque d'ancrage (28) lors de son déplacement dynamique sur le boulon d'ancrage (27). Pour simplifier le montage et réduire une postvibration désavantageuse de la plaque d'ancrage, le ressort de rappel (35) s'appuie, par son extrémité (62) opposée à la plaque d'ancrage (28), sur un élément support (50) placé sur le boulon d'ancrage (27) et se déplaçant avec le boulon d'ancrage. Cet élément support (50) constitue simultanément une partie (57) du dispositif d'amortissement.

Claims (10)

  1. Electrovanne pour la commande d'un injecteur d'un moteur à combustion interne, comprenant un électro-aimant (29), une armature mobile avec une plaque d'armature (28) et une tige d'armature (27), et un organe de soupape de commande (25) se déplaçant avec l'armature et qui coopère avec un siège de soupape (24), et est destiné à ouvrir et fermer un canal d'écoulement de carburant (17) appartenant à une chambre de pression de commande (14) de l'injecteur (1), laquelle plaque d'armature (28) est montée pour se déplacer en coulissement sur la tige d'armature (27) sous l'action de sa masse inerte dans le sens de la fermeture de l'organe de soupape de commande (25) à l'encontre de la force de serrage d'un ressort de rappel (35) agissant sur la plaque d'armature (28), et un dispositif amortisseur hydraulique avec lequel une oscillation après impulsion de la plaque d'armature (28) peut être amortie lors de son coulissement dynamique sur la tige d'armature (27),
    caractérisée en ce que
    le ressort de rappel (35) prend appui par son extrémité (62) éloignée de la plaque d'armature (28), sur une pièce d'appui (50) portée par la tige d'armature (27) et qui se déplace avec la tige d'armature, laquelle pièce d'appui (50) forme en même temps une partie (57) du dispositif amortisseur.
  2. Electrovanne selon la revendication 1,
    caractérisée en ce que
    la tige d'armature (27), la plaque d'armature (28), le ressort de rappel (35) et la pièce d'appui (50) fixée à la tige d'armature sont placés dans le boîtier (60) de l'électrovanne sous la forme d'un sous-ensemble d'armature prémonté.
  3. Electrovanne selon la revendication 1 ou 2,
    caractérisée en ce que
    la tige d'armature (27) est montée coulissante dans une ouverture (68) d'une glissière (34) agencée en position fixe dans le boîtier (60) de l'électrovanne (30).
  4. Electrovanne selon la revendication 3,
    caractérisée en ce que
    le côté de la glissière (34) dirigé vers la plaque d'armature (28) présente un évidement (52) dans lequel est disposée la pièce d'appui (50) portée par la tige d'armature (27), le contour extérieur de la pièce d'appui (50) étant espacé du contour intérieur de l'évidement (52) par une fente.
  5. Electrovanne selon la revendication 4,
    caractérisée en ce que
    la fente entre la pièce d'appui (50) et la paroi intérieure de l'évidement (52), qui est remplie de carburant, forme un dispositif amortisseur additionnel pouvant amortir un impact de l'organe de soupape de commande (25), accouplé à la tige d'armature (27), sur le siège de soupape (24).
  6. Electrovanne selon une des revendications 1 à 5,
    caractérisée en ce que
    la pièce d'appui (50) est en forme de rondelle.
  7. Electrovanne selon une des revendications 1 à 6,
    caractérisée en ce que
    la pièce d'appui (50) est fixée à la tige d'armature (27) par soudage, collage, brasage ou frettage.
  8. Electrovanne selon une des revendications 1 à 5,
    caractérisée en ce que
    la pièce d'appui (50) est constituée par une rondelle en forme de croissant.
  9. Electrovanne selon la revendication 8,
    caractérisée en ce que
    la pièce d'appui est fixée dans une gorge périphérique (54) de la tige d'armature (27) par une liaison par complémentarité de forme.
  10. Electrovanne selon les revendications 4 et 8,
    caractérisée en ce que
    la rondelle en forme de croissant (50) est emboîtée latéralement sur un segment (72) de la tige d'armature (27) qui ne circule pas dans la glissière (34), elle est pressée par la force élastique du ressort de rappel (35) contre un épaulement (71) formé sur la tige d'armature (27), et elle est arrêtée dans la direction radiale par le contour intérieur de l'évidement (52) qui l'empêche de s'échapper de la tige d'armature.
EP01994586A 2000-11-23 2001-11-16 Electrovanne destinee a la commande d'une soupape d'injection d'un moteur a combustion interne Expired - Lifetime EP1259729B1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE10058007 2000-11-23
DE10058007 2000-11-23
DE10113008A DE10113008A1 (de) 2000-11-23 2001-03-17 Magnetventil zur Steuerung eines Einspritzventils einer Brennkraftmaschine
DE10113008 2001-03-17
PCT/DE2001/004318 WO2002042632A2 (fr) 2000-11-23 2001-11-16 Electrovanne destinee a la commande d'une soupape d'injection d'un moteur a combustion interne

Publications (2)

Publication Number Publication Date
EP1259729A2 EP1259729A2 (fr) 2002-11-27
EP1259729B1 true EP1259729B1 (fr) 2006-01-18

Family

ID=26007749

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01994586A Expired - Lifetime EP1259729B1 (fr) 2000-11-23 2001-11-16 Electrovanne destinee a la commande d'une soupape d'injection d'un moteur a combustion interne

Country Status (6)

Country Link
US (1) US6796543B2 (fr)
EP (1) EP1259729B1 (fr)
JP (1) JP4138481B2 (fr)
DE (1) DE50108770D1 (fr)
ES (1) ES2256333T3 (fr)
WO (1) WO2002042632A2 (fr)

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DE102004035291A1 (de) * 2004-07-21 2006-03-16 Robert Bosch Gmbh Magnetventil für einen Injektor für Common-Rail-Kraftstoffeinspritzsysteme mit Dämpfungselement
TWI295336B (en) * 2004-09-13 2008-04-01 Guk Hyun Park Fuel injection system
DE102004046888A1 (de) * 2004-09-28 2006-03-30 Robert Bosch Gmbh Injektor zur Kraftstoffeinspritzung an einer Brennkraftmaschine
US8342423B2 (en) * 2005-01-07 2013-01-01 Delphi Technologies Holding S.Arl Fuel injection apparatus
DE102005053115A1 (de) * 2005-11-08 2007-05-10 Robert Bosch Gmbh Optimierte Ankergruppenführung für Magnetventile
EP1801409B1 (fr) * 2005-12-23 2008-08-27 Delphi Technologies, Inc. Injecteur de carburant
DE102006045357A1 (de) * 2006-09-26 2008-04-03 Robert Bosch Gmbh Sicherungsscheibe für ein Magnetventil
DE102008000907A1 (de) * 2008-04-01 2009-10-08 Robert Bosch Gmbh Magnetventil mit mehrteiligem Anker ohne Ankerführung
EP2138707B1 (fr) * 2008-06-27 2011-03-23 C.R.F. Società Consortile per Azioni Injecteur de carburant doté d'une servovalve de dosage de type équilibré pour moteur à combustion interne
US8459577B2 (en) * 2008-07-08 2013-06-11 Caterpillar Inc. Decoupled valve assembly and fuel injector using same
DE602008005349D1 (de) * 2008-12-29 2011-04-14 Fiat Ricerche Brennstoffeinspritzsystem mit hoher Betriebswiederholbarkeit und -stabilität für einen Verbrennungsmotor
US8316826B2 (en) * 2009-01-15 2012-11-27 Caterpillar Inc. Reducing variations in close coupled post injections in a fuel injector and fuel system using same
EP2444651B1 (fr) 2010-10-19 2013-07-10 Continental Automotive GmbH Ensemble de soupape pour soupape d'injection et soupape d'injection
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JP4138481B2 (ja) 2008-08-27
EP1259729A2 (fr) 2002-11-27
DE50108770D1 (de) 2006-04-06
US20040026540A1 (en) 2004-02-12
US6796543B2 (en) 2004-09-28
ES2256333T3 (es) 2006-07-16
WO2002042632A3 (fr) 2002-08-08
JP2004514823A (ja) 2004-05-20
WO2002042632A2 (fr) 2002-05-30

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