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WO2009086996A1 - Injecteur de carburant - Google Patents

Injecteur de carburant Download PDF

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Publication number
WO2009086996A1
WO2009086996A1 PCT/EP2008/066705 EP2008066705W WO2009086996A1 WO 2009086996 A1 WO2009086996 A1 WO 2009086996A1 EP 2008066705 W EP2008066705 W EP 2008066705W WO 2009086996 A1 WO2009086996 A1 WO 2009086996A1
Authority
WO
WIPO (PCT)
Prior art keywords
closing body
valve seat
valve
sleeve
closing
Prior art date
Application number
PCT/EP2008/066705
Other languages
German (de)
English (en)
Inventor
Bernd Streicher
Ralf Nussbaumer
Rudolf Heinz
Michael Mennicken
Holger Rapp
Christian Faltin
Nadja Eisenmenger
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
Priority to EP08870365A priority Critical patent/EP2232044B1/fr
Priority to AT08870365T priority patent/ATE512298T1/de
Priority to CN200880124263.6A priority patent/CN101910606B/zh
Priority to JP2010541732A priority patent/JP5010035B2/ja
Publication of WO2009086996A1 publication Critical patent/WO2009086996A1/fr

Links

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
    • F02M63/0014—Valves characterised by the valve actuating means
    • F02M63/0015—Valves characterised by the valve actuating means electrical, e.g. using solenoid
    • 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
    • F02M63/004—Sliding valves, e.g. spool valves, i.e. whereby the closing member has a sliding movement along a seat for opening and closing
    • 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
    • F02M63/004—Sliding valves, e.g. spool valves, i.e. whereby the closing member has a sliding movement along a seat for opening and closing
    • F02M63/0042—Sliding valves, e.g. spool valves, i.e. whereby the closing member has a sliding movement along a seat for opening and closing combined with valve seats of the lift valve type
    • 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
    • F02M63/0043—Two-way valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • 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
    • F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
    • F02M63/0078—Valve member details, e.g. special shape, hollow or fuel passages in the valve member
    • F02M63/008—Hollow valve members, e.g. members internally guided
    • 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

  • each cylinder or combustion chamber of the engine is assigned a fuel injector with an injector nozzle arrangement for injecting fuel into the respective combustion chamber.
  • These fuel injectors each have a liftable in a piston working chamber control piston for
  • Actuation of a closure element of the injector nozzle arrangement and a seat-controlled servo valve arrangement which allows the communicating via an inlet throttle with a high-pressure source piston working space of the control piston with a relatively pressureless outflow space, so that when pressure is applied by the high pressure source in the direction of
  • Closing position of the closure element of the injector nozzle assembly associated Sch finedlage acted control piston executes a closure element leading to its open position stroke in the direction of its open end, said arranged in an injector servo valve assembly a valve seat body and a through a
  • Electromagnet against a closing force in its open position adjustable sleeve-shaped closing body which cooperates with an annular seat on the valve seat body and is displaceably guided on a valve seat body arranged centrally to the annular seat axial extension, and wherein in the open position of the sleeve-shaped closing body within the Closing body formed on the axial extension and communicating with the piston working chamber of the control piston valve space is connected under pressure relief to the outflow chamber.
  • Such a fuel injector is described by way of example in EP 1612403 A1.
  • Valve-closing body is arranged. Near the valve seat, a ringnutförmige recess is formed on the axial extension, so that within the valve closing body of the corresponding ring-shaped valve space is created, which is provided via a provided with an outlet throttle bore, which is arranged in the valve seat body, with the piston working space of
  • Control piston communicates and is connected to the outside of the sleeve-shaped closing body arranged outflow space as soon as the sleeve-shaped closing body lifts off from its seat on the valve seat body.
  • the closing body and the outer circumference of the axial extension on the side remote from the valve seat side of the annular valve space within the sleeve-shaped closing body is effected by high pressure resistant seals.
  • This known fuel injector has a manufacturing-consuming
  • an axial blind bore is provided within the axial extension, which forms in the region of the aforementioned valve space annular groove constriction of the axial extension of
  • the formed in the tubular closing body valve space is closed at the valve seat remote end of the closing body by a projecting into the closing body in the manner of a plunger guide rod, the pressure in the valve chamber pressed against a bottom surface of the injector body and thus urged into a vertical position to the bottom surface and aligns the closing body accordingly.
  • the closing body cooperates with a flat seat parallel to the bottom surface, which annularly encloses an opening of a channel connecting the piston working space with the valve space in the valve seat body and leading into the valve space.
  • Such injectors offer the advantage of a very high compressive strength.
  • the longitudinal axis of the closing body may shift slightly in the sideways direction, because the guide rod has a corresponding mobility. This has the consequence that the closing body has to cooperate sealingly with a correspondingly offset annular zone of the seat. This can result in a critical closing behavior of the servo valve arrangement. This applies in principle even if the valve seat according to an older not previously published
  • Patent application has the shape of the surface of a spherical section.
  • the object of the invention is now, fuel injectors with respect to pressure pulsations in principle comparatively insensitive construction and with ease of manufacture and good closing behavior of
  • the invention is based on the general idea of providing a separate part from the valve seat body for the closure of the end remote from the valve seat body of the sleeve-shaped closing body of the servo valve.
  • the design and manufacture of the valve seat body is simplified, furthermore, the need for the arrangement of a strong compared Interference stresses sensitive zone avoided on the axial extension of the valve seat body.
  • the invention provides to guide the closing body valve seat side, so that the valve seat side ring zone, with which the closing body sealingly cooperates, has a fixed position in principle unchangeable.
  • a valve seat-side guide of the closing body and on the other hand a separate valve seat for sealing the valve seat facing away from the end of the closing body is provided, a high stability of the injector against pressure pulsations and an excellent
  • the valve seat body facing away from the end of the plunger rod with a fixed disc-shaped foot rest flat on a bottom of the injector body which may be useful additionally provided that the foot piece is arranged on the floor with radial play and the sleeve-shaped Closing body is guided at least limited wobble on the axial extension of the valve seat body.
  • the plunger rod is tensioned with its foot piece by the hydraulic pressure in the valve chamber within the sleeve-shaped closing element of the servo valve against the bottom of the injector body.
  • the plunger rod assumes a position orthogonal to the bottom and guides the sleeve-shaped closing body in the direction orthogonal to the ground.
  • the centering of the closing body relative to the seat on the valve seat body is taken over in this embodiment of the axial extension of the valve seat body. As a result, therefore, a self-aligning arrangement is achieved.
  • the plunger rod with its end facing away from the valve seat body end also supported radially movable and wobble on a facing bottom of the injector body and the sleeve-shaped closing body untaumelbar on the axial extension of the Be guided valve seat body hubbeweglich.
  • the exact stroke direction of the sleeve-shaped closing body and its radial orientation by the valve seat body or guide elements arranged thereon are given, while the plunger rod essentially takes on the task of closing the valve seat body facing away from the end of the sleeve-shaped closing body.
  • the annular gap between the inner circumference of the sleeve-shaped closing body and the outer circumference of the plunger rod can in basically conventional manner by high-pressure-resistant seals, for example by in annular grooves on
  • Such an embodiment has the advantage that the sleeve-shaped closing body is mounted hydraulically on the plunger rod during operation of the fuel injector and thus no direct contact between the inner circumference of
  • Closing body and the outer periphery of the plunger rod can occur. Furthermore, the assembly is simplified because separate sealing elements omitted.
  • Fig. 1 is an axial section of a first embodiment of a
  • Fuel injector and Fig. 2 is an axial section of another embodiment.
  • the fuel injector shown there in axial section has an injector body 1 with a stepped axial bore 2.
  • a valve seat body 3 with a molded-on body part 3 is formed on it
  • Collar 3 ' mounted axially.
  • an external threaded ring 4 which is screwed into an internally threaded portion of the axial bore 2 and by screw adjustment against the facing end face of the collar 3 'is stretched.
  • Axial bore 2 a high pressure area 2 ', which communicates by non-illustrated lines constantly with a high pressure fuel source, from a downstream or low pressure area 2 "separated, which is connected via non-illustrated return lines with a relatively pressureless fuel reservoir.
  • valve seat body 3 serving as a piston working space 5 for a control piston 6 blind bore is arranged.
  • the control piston 6 is connected to a nozzle needle or another
  • Closing element connected to the injector nozzle arrangement of the fuel injector not shown. In the illustrated lower end position of the control piston 6, the injector nozzle arrangement is closed. If the control piston 6 is moved upward in FIG. 1, the injector nozzle arrangement is opened, so that fuel in the assigned
  • Combustion chamber of an internal combustion engine is injected.
  • valve chamber 10 which is arranged axially in front of the front end of the valve seat body 3 arranged axial extension 11 within a sleeve-shaped closing body 12 of a servo valve assembly 13 and on the of Valve seat body 3 opposite end of the sleeve-shaped closing body 12 is closed by a protruding into the sleeve-shaped closing body 12 plunger rod 14.
  • hydraulic pressure plunger rod 14 Against the possibly occurring in the valve chamber 10 hydraulic pressure plunger rod 14 by means of a fixed at its in Fig. 1 upper end disk-shaped foot piece 15 on a bottom 16 of the
  • Injector body 1 comparatively large area supported.
  • the foot 15 serves as an abutment for a trained as a helical compression spring closing spring 17, which seeks to clamp the sleeve-shaped closing body 12 with its in Fig. 1 lower end against a formed on the valve seat body 3, to the axis of the axial extension 11 conical conical valve seat 18.
  • a helical compression spring closing spring 17 which seeks to clamp the sleeve-shaped closing body 12 with its in Fig. 1 lower end against a formed on the valve seat body 3, to the axis of the axial extension 11 conical conical valve seat 18.
  • the sleeve-shaped closing body 12 can be excavated from the closed position shown in Fig. 1 by means of an annular electromagnet 19 which cooperates with the closing body 12 radially arranged radial armature webs 20.
  • an annular electromagnet 19 which cooperates with the closing body 12 radially arranged radial armature webs 20.
  • the open position of the closing body 12 of the servo valve assembly 13 communicates the
  • a largely throttle-free connection between the valve chamber 10 and the low pressure region 2" of the axial bore 2 is given because the cross section of the axial extension 11 of the valve seat body 3 is formed substantially star-shaped in such a way that the axial extension 11 slidably rests on the inner circumference of the sleeve-shaped closing body with star-shaped axial webs. In the circumferential direction between the axial webs remain larger open spaces over which the valve chamber 10 communicates with lifted off from the seat 18 closing body 12 with the low pressure region 2 "of the axial bore 2.
  • axial extension 11 instead of the axial extension 11 provided with star-shaped axial webs, it is also possible to provide an axial extension designed as a triflane, four-flattened or multi-flattened one.
  • the radially adjoining the axial bore of the closing body 12 end edge is formed as an inner cone whose opening angle is greater than the cone angle of the conical valve seat 18.
  • the fuel injector of Fig. 1 functions as follows:
  • Combustion chamber of the internal combustion engine connected and fuel is injected into the combustion chamber.
  • the closing body 12 is held radially centered relative to the conical valve seat 18 by the axial extension 11 or its axial extension, which is slidable on the inner circumference of the closing body 12.
  • the Plungerstange 14 takes a correspondingly centered, ie the axial extension 11 equiaxial position, because the circular disk-shaped foot piece 15 is disposed within the annular electromagnet 19 with sufficient radial clearance and surface on the axis of the axial extension 11 vertical bottom 16 rests.
  • the closing body 12 is guided in a tumble on the axial extension 11 and the stroke direction of the closing body 12 is predetermined solely by the plunger rod 14, which by means of the
  • Footpiece 15 which rests flat on the floor 16 is held in a direction orthogonal to the bottom 16.
  • the embodiment shown in Fig. 2 differs from the embodiment of Fig. 1, first in that the plunger rod 14 is supported wobble on the bottom 16 of the injector body 1, wherein the supported end of the plunger rod 14 within an annular disc 21 or the annular disc 21 within the annular electromagnet 19 are arranged with a certain radial clearance, so that the support point of the plunger rod 14 can move on the floor 16 radially to the rod axis.
  • the closing body 12 is guided in Fig. 2 untaumelbar axially displaceable on the axial extension 11 of the valve seat body 3, i. the position of the closing body 12 radially to the axis of the valve seat body 3 and the stroke direction of the closing body 12 are determined exclusively by the axial extension 11, which has a sufficient axial length and a sufficient axial overlap with the closing body 12.
  • the position of the plunger rod 14 and its axial orientation are then determined by the closing body 12 and, accordingly, indirectly by the axial extension 11.
  • an annular disc-shaped, flat valve seat 18 is provided, on which the closing body 12 in his
  • valve seat 18 facing the end face of the closing body 12 is slightly conical, so that at the transition between the valve seat side end face of the closing body 12 and the axial bore an acute-angled annular edge, which cooperates with the valve seat 18 is formed.
  • the embodiment of FIG. 2 corresponds to the embodiment of FIG. 1, so that reference may be made to the corresponding above statements.
  • the annular gap between the outer periphery of the plunger rod 14 and the inner periphery of the closing body 12 can be sealed high pressure resistant by sealing rings, which are similar to the sealing rings 22 of the control piston 6 in the manner of piston rings may be arranged in circumferential grooves of the plunger rod 14.
  • this annular gap is also possible and provided according to an advantageous embodiment of the invention to form this annular gap as a high pressure-tight throttle gap, such that virtually only vanishing leakage currents can occur even at high hydraulic pressure differences between the axial ends of said annular gap. This can be ensured by an extremely narrow radial gap and a sufficiently large axial overlap between closing body 12 and plunger rod 14.
  • the particular advantage of such training is that at
  • control piston 6 arranged in the piston working space 5 forming axial bore of the valve seat body 3 with high pressure-tight throttle gap.
  • the plunger rod 14 may be formed with the omission of the annular disc 21 as a mushroom head, which is supported with its convex side on the floor 16 and its from the bottom 16 opposite side forms an abutment surface for the closing spring 17.
  • the diameter of the mushroom head is expediently dimensioned so that within the annular electromagnet 19 still a certain amount of radial play for a force-free alignment of the plunger rod 14 remains, ie the Plunger rod 14 can zwangskraftok take their equiaxial to the closing body 12 position.

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)

Abstract

La présente invention concerne un injecteur de carburant comportant un dispositif à buse d'injection pour l'injection de carburant dans un moteur à combustion interne, un piston de commande mobile dans une chambre de travail pour l'actionnement d'un élément d'obturation d'un dispositif à buse d'injection, un dispositif à servovalve commandé par le siège, lequel dispositif permet de relier la chambre de travail du piston de commande, communiquant avec une source de carburant à haute pression par le biais d'un papillon d'amenée, à une chambre d'évacuation sans pression relative de telle sorte que le piston de commande alimenté, lors d'une alimentation en pression par la source de carburant à haute pression, en direction de la position finale attribuée à la position de fermeture de l'élément d'obturation du dispositif à buse d'injection effectue une course amenant l'élément d'obturation dans sa position ouverte, le dispositif à servovalve disposé dans un corps d'injecteur présentant un corps de siège de soupape ainsi qu'un élément de fermeture en forme de manchon pouvant être déplacé dans sa position ouverte par un électroaimant contre une force de fermeture, élément de fermeture qui coopère avec un siège annulaire sur le corps de siège de soupape et qui est guidé de manière à pouvoir être déplacé sur le corps de siège de soupape sur un prolongement axial disposé au centre par rapport au siège annulaire.
PCT/EP2008/066705 2008-01-07 2008-12-03 Injecteur de carburant WO2009086996A1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP08870365A EP2232044B1 (fr) 2008-01-07 2008-12-03 Injecteur de carburant
AT08870365T ATE512298T1 (de) 2008-01-07 2008-12-03 Kraftstoffinjektor
CN200880124263.6A CN101910606B (zh) 2008-01-07 2008-12-03 燃料喷射器
JP2010541732A JP5010035B2 (ja) 2008-01-07 2008-12-03 燃料インジェクタ

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008003348A DE102008003348A1 (de) 2008-01-07 2008-01-07 Kraftstoffinjektor
DE102008003348.0 2008-01-07

Publications (1)

Publication Number Publication Date
WO2009086996A1 true WO2009086996A1 (fr) 2009-07-16

Family

ID=40451148

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/066705 WO2009086996A1 (fr) 2008-01-07 2008-12-03 Injecteur de carburant

Country Status (6)

Country Link
EP (1) EP2232044B1 (fr)
JP (1) JP5010035B2 (fr)
CN (1) CN101910606B (fr)
AT (1) ATE512298T1 (fr)
DE (1) DE102008003348A1 (fr)
WO (1) WO2009086996A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009029009A1 (de) * 2009-08-31 2011-03-03 Robert Bosch Gmbh Injektor zum Einspritzen von Kraftstoff
DE102009029563A1 (de) * 2009-09-18 2011-03-24 Robert Bosch Gmbh Injektor
DE102009045335A1 (de) * 2009-10-05 2011-04-07 Robert Bosch Gmbh Injektor
DE102010001486A1 (de) * 2010-02-02 2011-08-04 Robert Bosch GmbH, 70469 Steuerventilanordnung eines Kraftstoffinjektors
DE102011086951A1 (de) * 2011-11-23 2013-05-23 Robert Bosch Gmbh Ankerbaugruppe, Magnetventil sowie Kraftstoffeinspritzvorrichtung
DE102012221157A1 (de) * 2012-11-20 2014-05-22 Robert Bosch Gmbh Druckregelventil für einen Hochdruckspeicher eines Verbrennungsmotors
DE102013221554A1 (de) * 2013-10-23 2015-04-23 Robert Bosch Gmbh Kraftstoffinjektor
DE102014220795A1 (de) * 2014-10-14 2016-04-14 Robert Bosch Gmbh Verfahren zur Vorgabe eines Stroms in einem Magnetventil
CN114165371B (zh) * 2021-12-17 2023-05-05 中国船舶集团有限公司第七一一研究所 流体喷射器

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1612403A1 (fr) * 2004-06-30 2006-01-04 C.R.F. Societa' Consortile per Azioni Soupape servo pour controller l'injecteur d'un moteur à combustion interne
EP1707798A1 (fr) * 2005-03-14 2006-10-04 C.R.F. Societa' Consortile per Azioni Soupape de dosage asservie réglable pour un injecteur de carburant ainsi que sa méthode de réglage
DE102006021736A1 (de) * 2006-05-10 2007-11-15 Robert Bosch Gmbh Kraftstoffinjektor mit druckausgeglichenem Steuerventil
DE102006046898A1 (de) * 2006-10-04 2008-04-10 Robert Bosch Gmbh Drosselplatte für Magnetventil

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000002356A (ja) * 1998-06-18 2000-01-07 Denso Corp 電磁弁およびそれを用いた燃料噴射弁
DE10241462A1 (de) * 2002-09-06 2004-03-18 Robert Bosch Gmbh Injektor zur Einspritzung von Kraftstoff in Brennräume von Brennkraftmaschinen, insbesondere servoventilgesteuerter Common-Rail-Injektor
EP1795738A1 (fr) * 2005-12-12 2007-06-13 C.R.F. Societa Consortile per Azioni Système d'injection de carburant pour un moteur à combustion interne et méthode correspondante pour commander l'injection de carburant
DE102006021741A1 (de) * 2006-05-10 2007-11-15 Robert Bosch Gmbh Kraftstoffinjektor mit druckausgeglichenem Steuerventil

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1612403A1 (fr) * 2004-06-30 2006-01-04 C.R.F. Societa' Consortile per Azioni Soupape servo pour controller l'injecteur d'un moteur à combustion interne
EP1707798A1 (fr) * 2005-03-14 2006-10-04 C.R.F. Societa' Consortile per Azioni Soupape de dosage asservie réglable pour un injecteur de carburant ainsi que sa méthode de réglage
DE102006021736A1 (de) * 2006-05-10 2007-11-15 Robert Bosch Gmbh Kraftstoffinjektor mit druckausgeglichenem Steuerventil
DE102006046898A1 (de) * 2006-10-04 2008-04-10 Robert Bosch Gmbh Drosselplatte für Magnetventil

Also Published As

Publication number Publication date
JP2011508853A (ja) 2011-03-17
JP5010035B2 (ja) 2012-08-29
CN101910606B (zh) 2013-06-12
EP2232044B1 (fr) 2011-06-08
EP2232044A1 (fr) 2010-09-29
ATE512298T1 (de) 2011-06-15
DE102008003348A1 (de) 2009-07-09
CN101910606A (zh) 2010-12-08

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