EP1697632B1 - Soupape d'injection de carburant - Google Patents

Soupape d'injection de carburant Download PDF

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Publication number
EP1697632B1
EP1697632B1 EP04798136A EP04798136A EP1697632B1 EP 1697632 B1 EP1697632 B1 EP 1697632B1 EP 04798136 A EP04798136 A EP 04798136A EP 04798136 A EP04798136 A EP 04798136A EP 1697632 B1 EP1697632 B1 EP 1697632B1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
injection valve
seal
valve according
receiving opening
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
EP04798136A
Other languages
German (de)
English (en)
Other versions
EP1697632A1 (fr
Inventor
Martin BÜHNER
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 EP1697632A1 publication Critical patent/EP1697632A1/fr
Application granted granted Critical
Publication of EP1697632B1 publication Critical patent/EP1697632B1/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
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/14—Arrangements of injectors with respect to engines; Mounting of injectors
    • 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
    • F02M2200/85—Mounting of fuel injection apparatus
    • F02M2200/858—Mounting of fuel injection apparatus sealing arrangements between injector and engine
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/166—Selection of particular materials

Definitions

  • the invention relates to a fuel injection valve according to the preamble of the main claim.
  • a fuel injection valve with a spray-side arranged seal known.
  • the existing example of a copper-tin alloy or stainless steel seal is arranged in a nozzle body radially encircling annular groove and axially fixed in this manner, wherein it seals the fuel injection valve against a cylinder head.
  • a disadvantage of the fuel injection valve known from the above publication is that the seal can not be arranged anywhere near the transition to the combustion chamber by the complete positive embedding of the seal.
  • gases or fuel can penetrate into the located between the discharge end of the fuel injection valve and the cylinder head gap and lead to the seal to leaks, for example, by lifting the seal from the annular groove or unburned Fuel settles in the gap, which can negatively affect the exhaust gas.
  • a fuel injector is described with a nozzle body, which is used for the direct injection of fuel into the combustion chamber of an internal combustion engine in a receiving bore of a cylinder head of the internal combustion engine.
  • the fuel injection valve has a metal ring arranged on the nozzle body, which deforms upon heating and, after the insertion of the fuel injection valve into the receiving bore, causes a radial compression of the fuel injection valve in the receiving bore only when heated.
  • the fuel injection valve according to the invention with the characterizing features of the main claim has the advantage that the seal can be led to the transition to the combustion chamber and so the sealing effect is improved.
  • the seal is joined by welding, laser welding, caulking or pressing in the discharge-side region of the fuel injection valve.
  • the joint can thus be produced cost-effectively and reliably in accordance with the requirements.
  • the seal consists of a metal, in particular of steel or V2A steel, a copper alloy and / or a brass alloy. Depending on the requirements of temperature resistance and temperature behavior, the seal can be designed correspondingly advantageous and cost-effective.
  • the seal can be produced very cost-effectively and very accurately in large numbers.
  • the first portion is at least partially permanently elastic and is thereby biased against the valve receiving opening.
  • the seal can, for example, after an expansion of the
  • Fuel injector can be reused during installation of the same fuel injection valve and can remain on the fuel injection valve.
  • the sealing effect of the seal can be improved.
  • the seal can also be made easier.
  • the bottom of the U-shaped section at the level of a step, whereby the dead space located between the nozzle body and the valve receiving opening is minimized, or to be arranged at the height of the sprayer distal end of the diameter feed, whereby the first section by the gas pressure in the combustion chamber is pressed to the valve receiving opening and the sealing effect is thereby improved.
  • first portion is at least partially sealingly on a tapered, the diameter of the valve receiving opening narrowing first bearing surface.
  • FIGS. 2 3, 4, 5 and 7 preferred embodiments of the invention will be described in more detail, is intended for better understanding of the invention initially with reference to Fig. 1 a generic fuel injection valve will be briefly explained with respect to its essential components.
  • a fuel injection valve 1 is embodied in the form of a fuel injection valve 1 for fuel injection systems of mixture-compression, spark-ignition internal combustion engines.
  • the fuel injection valve 1 is suitable in particular for the direct injection of fuel into a combustion chamber, not shown, of an internal combustion engine.
  • the fuel injection valve 1 consists of a nozzle body 2, in which a valve needle 3 is arranged.
  • the valve needle 3 has a discharge side Valve closing body 4, which cooperates with a arranged on a valve seat body 5 valve seat surface 6 to a sealing seat.
  • the fuel injection valve 1 in the example is an inwardly opening fuel injection valve 1 which has an injection opening 7.
  • the nozzle body 2 is sealed by a seal 8 against an outer pole 9 of a magnetic coil 10.
  • the magnetic coil 10 is encapsulated in a coil housing 11 and wound on a bobbin 12, which rests against an inner pole 13 of the magnetic coil 10.
  • the inner pole 13 and the outer pole 9 are separated by a distance 26 and connected to each other by a non-ferromagnetic connecting member 29.
  • the magnetic coil 10 is energized via an electrical line 19 from a via an electrical plug contact 17 can be supplied electric current.
  • the plug contact 17 is surrounded by a plastic casing 18, which may be molded on the inner pole 13.
  • valve needle 3 is guided in a valve needle guide 14, which is designed disk-shaped.
  • armature 20 On the other side of the shim 15 is the armature 20. This is connected via a first flange 21 with the valve needle 3 in connection, which is connected by a weld 22 with the first flange 21.
  • a helical return spring 23 On the first flange 21, a helical return spring 23 is supported, which is brought in the present design of the fuel injection valve 1 by a sleeve 24 to bias.
  • valve needle guide 14 in the armature 20 and on a guide element 36 extend fuel channels 30, 31 and 32.
  • the fuel is supplied via a central fuel supply 16 and filtered by a filter element 25.
  • the fuel injection valve 1 is opposed by a rubber ring 28 against a fuel distributor line (not shown) and by a seal 37 one in Fig. 1 Cylinder head 43 not shown sealed.
  • annular damping element 33 On the discharge side of the armature 20, an annular damping element 33, which consists of an elastomer material, arranged. It rests on a second flange 34, which is materially connected to the valve needle 3 via a weld seam 35.
  • the armature 20 In the idle state of the fuel injection valve 1, the armature 20 is acted upon by the return spring 23 against its stroke direction so that the valve closing body 4 is held on the valve seat surface 6 in sealing engagement. Upon energization of the solenoid coil 10, this builds up a magnetic field, which moves the armature 20 against the spring force of the return spring 23 in the stroke direction, wherein the stroke is determined by a located in the rest position between the inner pole 12 and the armature 20 working gap 27.
  • the armature 20 takes the first flange 21, which is welded to the valve needle 3, also in the stroke direction with.
  • the standing with the valve needle 3 in connection valve closing body 4 lifts from the valve seat surface 6, and the pressurized supplied fuel is sprayed through the injection opening 7 in the combustion chamber, not shown.
  • the armature 20 drops after sufficient degradation of the magnetic field by the pressure of the return spring 23 from the inner pole 13, whereby the valve connected to the needle 3 in communication first flange 21 moves against the stroke direction.
  • the valve needle 3 is thereby moved in the same direction, whereby the valve closing body 4 touches on the valve seat surface 6 and the fuel injection valve 1 is closed.
  • the nozzle body 2, the valve needle 3 and the valve seat body 5 are formed coaxially with a central axis 40.
  • FIGS. 2 3, 4, 5 and 7 show schematic representations in the discharge-side region of embodiments of the fuel injection valve 1 according to the invention.
  • the fuel injection valve 1 is arranged in a valve receiving opening 48 of a cylinder head 43.
  • the fuel injection valve 1 has, in the discharge-side region, just before the discharge-side end, a step 47 formed in the nozzle body 2 and reducing the diameter of the nozzle body 2.
  • the seal 37 ends in Abspritzides at the level of a transition 39, at which the valve receiving opening 48 merges into the combustion chamber.
  • the step 47 is arranged at the level of the transition 39.
  • the seal 37 is substantially sleeve-shaped, produced by forming, in particular deep drawing and / or flanging, and has at least one outwardly, opposite to the immediately adjacent parts of the seal 37, protruding first portion 38.
  • the first section 38 completely surrounds the seal 37 and is, for example, permanently elastic, with the entire seal 37 being able to be made permanently elastic.
  • the first portion 38 is biased against the wall of the valve receiving opening 48 in the installed in the valve receiving opening 48 and seals the fuel injection valve 1 against the cylinder head 43 from.
  • the first portion 38 of the seal 37 of in Fig. 2 schematically illustrated first embodiment, is arranged approximately in the middle of the height of the seal 37.
  • the first section 38 is spherical in cross-sectional profile, or part-circular, arched outward.
  • the seal 37 is joined in the region of the discharge-side end of the fuel injection valve 1.
  • the portion 46 is materially joined by an example, completely circumferential weld 44 with the nozzle body 2.
  • the portion 46 is arranged in the discharge spray side of the seal 37 in this embodiment.
  • the weld 44 connects the seal 37 with the nozzle body 2 hermetically sealed.
  • the weld 44 may also consist of at least one spot weld.
  • the spray-off end of the seal 37 extends at right angles to the central axis 40 to the outside and lies on a formed in the valve receiving opening 48 shoulder 49, which reduces the diameter of the valve receiving opening 48 in Abspritzetti on. Between the first section 38 and the ejection-side end, the seal 37 partially lies against the nozzle body 2 in the axial direction.
  • the second embodiment similar to the first embodiment, which in Fig. 3 is shown, has a running to the step 47 with the same diameter diameter retraction 45.
  • the height of the seal 37 is slightly smaller than that of the diameter catch 45.
  • the diameter of the seal 37 at the spray-away end and the discharge-side end are the same.
  • the first portion 38 is located in the middle of the height of the seal 37.
  • the second embodiment similar third embodiment, which in Fig. 4 is shown, in the discharge-side region no diameter feed 45.
  • the seal 37 is located on the injection side and Abspritzfern the first portion 38 close to the discharge side cylindrical nozzle body 2.
  • the first section 38 rests on an obliquely tapering, first bearing surface 41 narrowing the diameter of the valve receiving opening 48.
  • the fuel injection valve 1 is biased in Abspritzetti, whereby the seal 37 is biased in the radial and axial direction against the valve receiving opening 48 in cooperation with the permanently elastic first portion 38.
  • Fig. 5 shows a schematic section through a fourth embodiment of a fuel injection valve 1 according to the invention in the discharge side region.
  • the part-circularly curved outward first portion 38 is disposed in the discharge side of the section 46 in this embodiment.
  • the in the cross-sectional profile part-circular curved outward first portion 38 is located with its inside on a corresponding, also partially circular outwardly curved support portion 50 of the nozzle body 2.
  • the support portion 50 and the first portion 38 end discharge side at the level of the step 47 and the transition 39th
  • Fig. 6A shows a schematic section through two embodiments of a non-inventive fuel injection valve 1 in the discharge side region.
  • the portion 46 on which the seal 37 is joined in a materially joined to the nozzle body 2 in the right embodiment, is located just before the abspritzfernen, applied to the nozzle body 2 end of the seal 37.
  • the seal 37 extends at right angles radially outward and shortly thereafter passes parallel to the injection direction into the first section 38, which ends just before the height of the section 46.
  • the seal 37 accordingly has in the discharge side Area in the cross-sectional profile on a U-shape, wherein the bottom of the U-shape is at a level with the level 47.
  • Fig. 6C shows the shape of the discharge-side portion of the seal 37 in the uninstalled state.
  • the first section 38 is straight, starting from the bottom of the U-shape elastic, light, starting from the installation position in Fig. 6A for example, 30 °, tilted outwards.
  • the seal 37 is formed in cross-section in the installed position as in the right embodiment. However, it is rotated in the cross section by 180 ° degrees. The bottom of the U-shape lies directly on the edge formed by the diameter of 45. The seal 37 is joined in the spray-side section 46 through the weld 44.
  • Fig. 6B shows the shape of the discharge-side portion of the seal 37 in the uninstalled state.
  • the first section 38 extends part-circular outwards, wherein it is elastic.
  • FIG. 7 schematically illustrated fifth embodiment of the fuel injection valve 1 according to the invention is similar to the first embodiment of Fig. 2 built up.
  • Abspritzfern the seal 37 but ends on the nozzle body 2 the first portion 38 has in the cross-sectional profile on a waveform and the discharge side of the first portion 38 arranged portion 46 is positively connected by a connecting portion 51 with the nozzle body 2.
  • the bead-shaped connecting portion 51 of the section 46 narrows the diameter of the portion 46 and engages in a correspondingly shaped recess 52 of the nozzle body 2 a.
  • the compound can be made detachable or insoluble.
  • Fig. 8 shows a schematic section through an embodiment of a non-inventive Fuel injection valve 1 in the discharge side area.
  • the first portion 38 extends part-circular outwards and extends the diameter of the seal 37 against the Abspritzetti to a constant distance to the spray-off end of the seal 37 diameter.
  • the spray-off end of the seal 37 is bevelled on the outside.
  • Fig. 9 shows a schematic section through an embodiment of a non-inventive fuel injection valve 1 in the discharge side region.
  • Both the first section 38 having a larger diameter than the partial section 46, as well as the partial section 46, sealingly rest on the wall of the valve receiving opening 48.
  • the abspritzcher of the first portion 38 arranged portion 46 is located on a diameter of the discharge-side end of the valve receiving opening 48 reducing projection 53 sealingly.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (14)

  1. Agencement de garniture d'étanchéité et soupape d'injection de carburant (1) comprenant un actionneur, un corps de fermeture de soupape (4) pouvant être actionné par l'actionneur, qui coopère avec une surface de siège de soupape (6) pour former un siège d'étanchéité, une ouverture de pulvérisation (7) et une garniture d'étanchéité (37) entourant radialement la région de l'extrémité de la soupape d'injection de carburant (1) du côté de la pulvérisation, pour réaliser l'étanchéité de la soupape d'injection de carburant (1) par rapport à une ouverture de réception de soupape d'une culasse,
    la garniture d'étanchéité (37) étant assemblée avec au moins une portion partielle axiale (46), qui s'étend seulement sur une partie de la longueur axiale de la garniture d'étanchéité (37), par engagement par liaison de matière, par engagement positif et/ou par engagement par force dans la région de l'extrémité de la soupape d'injection de carburant (1) du côté de la pulvérisation,
    la garniture d'étanchéité (37) étant réalisée dans au moins une partie en forme de douille et présentant une première portion (38) élastique durable, qui est réalisée sous forme sphérique dans le profil de section transversale, la garniture d'étanchéité (37) se terminant dans la direction de pulvérisation à la hauteur d'une transition (39) à l'extrémité de la soupape d'injection de carburant (1) du côté de la pulvérisation,
    caractérisé en ce que
    la transition (39) permet à l'ouverture de réception de soupape (48) de se prolonger dans la chambre de combustion.
  2. Soupape d'injection de carburant selon la revendication 1,
    caractérisée en ce que
    la garniture d'étanchéité (37) est assemblée par soudage ou soudage au laser et/ou par matage ou pressage.
  3. Soupape d'injection de carburant selon la revendication 1 ou 2,
    caractérisée en ce que
    la garniture d'étanchéité (37) se compose de métal, notamment d'acier déformable, d'acier V2A, d'un alliage de cuivre, et/ou d'un alliage de laiton.
  4. Soupape d'injection de carburant selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    la garniture d'étanchéité (37) est fabriquée au moins en partie par formage, notamment par emboutissage profond ou par bordage.
  5. Soupape d'injection de carburant selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    la première portion (38) est précontrainte contre la paroi de l'ouverture de réception de soupape (48) avec une précontrainte et est au moins partiellement élastique de manière durable, de sorte qu'au moins une partie de la précontrainte soit produite.
  6. Soupape d'injection de carburant selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    la première portion (38) dépasse au moins en partie vers l'extérieur par rapport aux parties adjacentes de la garniture d'étanchéité (37).
  7. Soupape d'injection de carburant selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    la première portion (37) est de forme ondulée dans le profil de section transversale, et s'applique de ce fait en plusieurs endroits de manière hermétique contre l'ouverture de réception de soupape (48).
  8. Soupape d'injection de carburant selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    la première portion (37) est réalisée en forme de cercle partiel dans le profil de section transversale, et/ou élargit vers l'extérieur en forme de cercle partiel le diamètre de la garniture d'étanchéité (37).
  9. Soupape d'injection de carburant selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    la garniture d'étanchéité (37) est réalisée au moins en partie en forme de U dans le profil en section transversale, la branche extérieure est formée par la première portion (38) et la branche intérieure est formée au moins en partie par la portion partielle (46).
  10. Soupape d'injection de carburant selon la revendication 9,
    caractérisée en ce que
    le fond de la portion en forme de U est disposé à la hauteur d'un étage (47) ou à la hauteur de l'extrémité éloignée de la pulvérisation d'un renfoncement de diamètre (45).
  11. Soupape d'injection de carburant selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    la garniture d'étanchéité (37) s'étend axialement entre la région de la soupape d'injection de carburant (1) du côté de la pulvérisation et l'ouverture de réception de soupape (48) jusqu'à la transition (39).
  12. Soupape d'injection de carburant selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    la première portion (38) s'applique hermétiquement au moins en partie sur une première surface d'appui (41) se terminant obliquement, rétrécissant le diamètre de l'ouverture de réception de soupape (48).
  13. Soupape d'injection de carburant selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    la garniture d'étanchéité (37) est au moins partiellement revêtue.
  14. Soupape d'injection de carburant selon l'une quelconque des revendications précédentes,
    caractérisée en ce que
    la garniture d'étanchéité (37) est chanfreinée à l'extérieur au niveau d'au moins l'une de ses extrémités.
EP04798136A 2003-12-16 2004-11-02 Soupape d'injection de carburant Expired - Lifetime EP1697632B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10358913A DE10358913A1 (de) 2003-12-16 2003-12-16 Brennstoffeinspritzventil
PCT/EP2004/052751 WO2005059352A1 (fr) 2003-12-16 2004-11-02 Soupape d'injection de carburant

Publications (2)

Publication Number Publication Date
EP1697632A1 EP1697632A1 (fr) 2006-09-06
EP1697632B1 true EP1697632B1 (fr) 2010-06-16

Family

ID=34683384

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04798136A Expired - Lifetime EP1697632B1 (fr) 2003-12-16 2004-11-02 Soupape d'injection de carburant

Country Status (5)

Country Link
US (1) US7377264B2 (fr)
EP (1) EP1697632B1 (fr)
JP (1) JP4404908B2 (fr)
DE (2) DE10358913A1 (fr)
WO (1) WO2005059352A1 (fr)

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DE102005006641A1 (de) * 2005-02-14 2006-08-24 Siemens Ag Einspritzventil zum Einspritzen von Kraftstoff und Zylinderkopf
DE102006009094A1 (de) * 2006-02-28 2007-08-30 Bayerische Motoren Werke Ag Dämpfungseinrichtung und Dämpfungselement
DE102006061733A1 (de) * 2006-12-28 2008-07-03 Robert Bosch Gmbh Halterungsvorrichtung für ein Reduktionsmittel-Dosierventil
DE102007001549A1 (de) * 2007-01-10 2008-07-17 Robert Bosch Gmbh Dehnhülsenbefestigung
US20090235898A1 (en) * 2008-03-19 2009-09-24 Short Jason C Fuel injector isolator
US7942132B2 (en) 2008-07-17 2011-05-17 Robert Bosch Gmbh In-line noise filtering device for fuel system
US8091362B2 (en) 2008-08-20 2012-01-10 Woodward, Inc. Fuel injector sans support/stem
US8069842B2 (en) * 2009-07-02 2011-12-06 Robert Bosch Gmbh Injector mounting assembly
US20110265767A1 (en) * 2010-05-03 2011-11-03 Delphi Technologies, Inc. Isolater for fuel injector
JP5831510B2 (ja) * 2012-11-20 2015-12-09 株式会社デンソー 燃料噴射弁および燃料噴射弁の取付方法
US9410520B2 (en) * 2013-08-08 2016-08-09 Cummins Inc. Internal combustion engine including an injector combustion seal positioned between a fuel injector and an engine body
US10036355B2 (en) 2013-08-08 2018-07-31 Cummins Inc. Heat transferring fuel injector combustion seal with load bearing capability
DE102015213221A1 (de) * 2015-07-15 2017-01-19 Robert Bosch Gmbh Ventil zum Zumessen eines Fluids
US10267524B2 (en) 2015-09-16 2019-04-23 Woodward, Inc. Prefilming fuel/air mixer
DE102015224421A1 (de) * 2015-12-07 2017-06-08 Robert Bosch Gmbh Elektromagnetisch betätigbares Einlassventil und Hochdruckpumpe mit Einlassventil
DE102015225055A1 (de) * 2015-12-14 2017-06-14 Robert Bosch Gmbh Kraftstoffinjektor
US10865714B2 (en) 2018-03-22 2020-12-15 Woodward. Inc. Gas turbine engine fuel injector
TR201820243A2 (tr) * 2018-12-24 2020-07-21 Bosch Sanayi Ve Tic A S Bir Yakıt Enjektörüne Yönelik bir Nozul Ünitesi, Yakıt Enjektörü Ve Aynı Zamanda Bir Nozul Ünitesinin Üretilmesine Yönelik Yöntem

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FR2659115B1 (fr) * 1990-03-02 1992-05-15 Procal Joint d'etancheite pour injecteur de moteur a combustion interne.
DE19808068A1 (de) * 1998-02-26 1999-09-02 Bosch Gmbh Robert Brennstoffeinspritzventil
JP3802702B2 (ja) * 1999-02-26 2006-07-26 株式会社ケーヒン 電磁式燃料噴射弁におけるシール部材の取付け構造
DE19941930A1 (de) * 1999-09-03 2001-03-15 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
DE19962968A1 (de) * 1999-12-24 2001-06-28 Bosch Gmbh Robert Ausgleichselement
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ITTO20010787A1 (it) 2001-08-03 2003-02-03 Rft Spa Gruppo di iniezione provvisto di tenuta, per un motore a combustione interna.

Also Published As

Publication number Publication date
US20070251503A1 (en) 2007-11-01
DE502004011289D1 (de) 2010-07-29
JP2007514102A (ja) 2007-05-31
EP1697632A1 (fr) 2006-09-06
WO2005059352A1 (fr) 2005-06-30
DE10358913A1 (de) 2005-09-01
JP4404908B2 (ja) 2010-01-27
US7377264B2 (en) 2008-05-27

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