EP1364119B1 - Element de compensation pour soupape d'injection de carburant - Google Patents

Element de compensation pour soupape d'injection de carburant Download PDF

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Publication number
EP1364119B1
EP1364119B1 EP02714056A EP02714056A EP1364119B1 EP 1364119 B1 EP1364119 B1 EP 1364119B1 EP 02714056 A EP02714056 A EP 02714056A EP 02714056 A EP02714056 A EP 02714056A EP 1364119 B1 EP1364119 B1 EP 1364119B1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
injection valve
injection system
insert ring
cylinder head
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
EP02714056A
Other languages
German (de)
English (en)
Other versions
EP1364119A1 (fr
Inventor
Ferdinand Reiter
Martin Maier
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 EP1364119A1 publication Critical patent/EP1364119A1/fr
Application granted granted Critical
Publication of EP1364119B1 publication Critical patent/EP1364119B1/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

Definitions

  • the invention relates to a fuel injection system according to the preamble of the main claim.
  • a fuel injection system which has a compensation element which consists of a support body which has a dome-shaped support surface.
  • a fuel injection valve is supported via this compensating element in a receiving bore of a cylinder head. Since the fuel injection valve rests on the spherical shaped Kalotten specifications with a support surface, the fuel injection valve can be mounted to a certain angular deviation from the axis of the receiving bore and firmly pressed into the receiving bore by suitable means, such as a clamping claw.
  • suitable means such as a clamping claw.
  • the support body is expensive to manufacture and requires a precisely manufactured spherical surface.
  • the rigid support body can not be compressed and thus there is no compensation in the axial direction of the receiving bore.
  • the compensation of tolerances can also be done only on the given geometry of the spherical surface. It is not possible purely to the receiving bore radial compensation movement.
  • a fuel injection system with a fuel injection valve in a cylinder head of an internal combustion engine wherein a sealing element is provided and the sealing element is formed in the form of a bottom ring and disposed between a valve housing of the fuel injection valve and a wall of a receiving bore of the cylinder head.
  • the lower ring has a round cross-section in the form of a classic sealing ring.
  • the fuel injection system according to the invention with the characterizing features of the main claim has the advantage that the fuel injection valve is mounted by an inserted between the fuel injection valve and a wall of the fuel injection valve receiving bore of the cylinder head Unterlegring with oval or round cross section, which must take no sealing function.
  • the lower ring ensures by its elasticity for a balance of manufacturing tolerances of the individual components and tolerances that are due to the heating of the fuel injection valve during operation and thus prevents tilting and misalignments.
  • the washer can optionally slotted and then pressed by means of press fit on a valve housing of the fuel injection valve or as a closed ring which is loosely attached to the valve housing may be formed.
  • the lower ring may be made of wire, which may be made of alloyed or unalloyed steel, for example.
  • the production of copper or a copper alloy is advantageous because copper has a high thermal conductivity and a good surface adaptation.
  • Fig. 1 shows a schematic partial section through an embodiment of an inventively designed compensating element for a fuel injection valve in a receiving bore of a cylinder head of a mixture-compressing, spark-ignited internal combustion engine.
  • a fuel injection valve 1 is designed in the form of a directly injecting fuel injection valve 1 and installed in a cylinder head 2 of an internal combustion engine.
  • the fuel injection valve 1 has at a supply-side end 3 a plug connection to a fuel distributor line 4, which is sealed by a seal 5 between the fuel distributor line 4 and a supply nozzle 6 of the fuel injection valve 1.
  • the fuel injection valve 1 has an electrical connection 7 for the electrical Contacting for actuating the fuel injection valve 1.
  • the fuel injection valve 1 has, in a receiving bore 9 of the cylinder head 2 according to the invention a lower ring 8, which serves as a compensation element for the fuel injection valve 1 in the receiving bore 9.
  • the Unterlegring 8 fulfills several functions. On the one hand can be achieved by a spacing of the fuel injector 1 from a wall 10 of the receiving bore 9, a centering of the fuel injector 1, which counteracts tilting of the fuel injector 1, for example in the region of a nozzle body 11 of the fuel injector 1 and thus the sealing effect of a plugged onto the nozzle body 11 sealing ring 12, which seals the cylinder head 2 against the combustion chamber of the internal combustion engine, not shown, contributes.
  • temperature-related tolerances that occur, for example, by the heating of the fuel injection valve 1 and the cylinder head 2 during operation of the internal combustion engine can be compensated by the lower ring 8. Tolerances of this kind can lead to stresses and strains of the connector between the fuel injection valve 1 and the fuel distributor line 4, for example.
  • the lower ring 8 As a material for the production of the lower ring 8, which can be pulled, for example, as a wire and then bent, come, for example, stainless steel, unalloyed, but surface-treated steel for better heat conduction or copper or copper alloys into consideration. In particular, the latter are characterized by a high thermal conductivity and a good surface adaptation by plastic deformability.
  • the Unterlegring 8 as shown in the exemplary embodiment, have a round cross-section or oval shaped.
  • the fit to the fuel injection valve 1 can be made either by clearance fit or by interference fit.
  • the clearance which allows the Unterlegring 8 to take an optimal position in accordance with the prevailing conditions, is particularly suitable for closed bottom rings 8, while the interference fit, which is particularly easy to implement slotted lower rings 8, effective protection against the loss of Unterlegrings. 8 when installing and removing the fuel injection valve 1 offers.
  • FIG. 2 shows a schematic detail of the compensating element according to the invention, illustrated in FIG. 1, in region II in FIG. 1.
  • FIG. 2 Particular attention should be paid to Fig. 2 to the fact that for the installation of the lower ring 8 no modifications to the shape of the receiving bore 9 of the cylinder head 2 or the valve housing 13 of the fuel injection valve 1 are necessary.
  • the fuel injection valve 1 is located with a shoulder 14 of the valve housing 13, which is chamfered at an angle of approximately 45 °, to a shoulder 15 of the cylinder head 2 in the receiving bore 9, which has an at least similar, better same inclination angle.
  • a shoulder 14 of the valve housing 13 which is chamfered at an angle of approximately 45 °, to a shoulder 15 of the cylinder head 2 in the receiving bore 9, which has an at least similar, better same inclination angle.
  • the washer 8 is simply placed on the shoulder 15 of the cylinder head 2 or on the valve housing 13 in the Attached portion of the shoulder 14, whereby the previous shoulder connection between the fuel injection valve 1 and the receiving bore 9 is opened to a distance corresponding to the diameter of the Unterlegrings 8.
  • This allows the Unterlegring to take the circumstances corresponding optimal situation, which may for example also lead to the fact that the ring with respect to a longitudinal axis 16 of the fuel injection valve 1 and the receiving bore 9 can be tilted or warped. This allows the desired tolerance compensation, which prevents build up of tensions and subsequent malfunction occur.
  • the invention is not limited to the illustrated embodiment and, for example, for fuel injection valves 1 for injection into the combustion chamber of a self-igniting internal combustion engine applicable.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Claims (10)

  1. Système d'injection de carburant comprenant un injecteur de carburant (1) disposé dans une culasse (2) d'un moteur à combustion interne et comprenant un élément de compensation, l'élément de compensation configuré sous la forme d'une bague d'équilibrage disposée entre un boîtier de soupape (13) de l'injecteur de carburant (1) et une paroi (10) d'un alésage de réception (9) de la culasse (2), la bague d'équilibrage (8), de section transversale ronde ou ovale, séparant un épaulement (14) du boîtier de soupape (13) d'un épaulement (15) de la culasse (2),
    caractérisé en ce que
    l'épaulement (14) du boîtier de soupape (13) et l'épaulement (15) de la culasse (2) forment un certain angle d'inclinaison par rapport à un axe longitudinal (16) de l'injecteur de carburant (1).
  2. Système d'injection de carburant selon la revendication 1,
    caractérisé en ce que
    la bague d'équilibrage (8) peut être fabriquée à partir d'un fil.
  3. Système d'injection de carburant selon la revendication 1 ou 2,
    caractérisé en ce que
    la bague d'équilibrage (8) est fermée.
  4. Système d'injection de carburant selon la revendication 3,
    caractérisé en ce que
    la bague d'équilibrage (8) est insérée de façon lâche sur le boîtier de soupape (13) de l'injecteur de carburant (1).
  5. Système d'injection de carburant selon la revendication 1 ou 2,
    caractérisé en ce que
    la bague d'équilibrage (8) est fendue.
  6. Système d'injection de carburant selon la revendication 5,
    caractérisé en ce que
    la bague d'équilibrage (8) est emmanchée sur le boîtier de soupape (13) de l'injecteur de carburant (1).
  7. Système d'injection de carburant selon l'une des revendications 1 à 6,
    caractérisé en ce que
    la bague d'équilibrage (8) est acier inoxydable.
  8. Système d'injection de carburant selon l'une des revendications 1 à 6,
    caractérisé en ce que
    la bague d'équilibrage (8) est en acier non-allié ayant subi un traitement de surface.
  9. Système d'injection de carburant selon l'une des revendications 1 à 6,
    caractérisé en ce que
    la bague d'équilibrage (8) est en cuivre ou en alliage de cuivre.
  10. Système d'injection de carburant selon la revendication 1,
    caractérisé en ce que
    l'épaulement (14) du boîtier de soupape (13) et l'épaulement (15) de la culasse (2) forment un angle d'inclinaison de 45° par rapport à l'axe longitudinal (16) de l'injecteur de carburant (1).
EP02714056A 2001-02-22 2002-02-22 Element de compensation pour soupape d'injection de carburant Expired - Lifetime EP1364119B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10108466A DE10108466A1 (de) 2001-02-22 2001-02-22 Ausgleichselement für ein Brennstoffeinspritzventil
DE10108466 2001-02-22
PCT/DE2002/000660 WO2002066822A1 (fr) 2001-02-22 2002-02-22 Element de compensation pour soupape d"injection de carburant

Publications (2)

Publication Number Publication Date
EP1364119A1 EP1364119A1 (fr) 2003-11-26
EP1364119B1 true EP1364119B1 (fr) 2007-01-03

Family

ID=7675068

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02714056A Expired - Lifetime EP1364119B1 (fr) 2001-02-22 2002-02-22 Element de compensation pour soupape d'injection de carburant

Country Status (6)

Country Link
US (1) US6807945B2 (fr)
EP (1) EP1364119B1 (fr)
JP (1) JP2004518853A (fr)
CZ (1) CZ20023458A3 (fr)
DE (2) DE10108466A1 (fr)
WO (1) WO2002066822A1 (fr)

Families Citing this family (35)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10338715B4 (de) 2003-08-22 2014-07-17 Robert Bosch Gmbh Ausgleichselement für ein Brennstoffeinspritzventil
EP1729720B1 (fr) * 2004-03-23 2008-11-19 L'oreal Composition comprenant un polymere comprenant un compose monomerique a effet optique, procede employant ladite composition
JP4546849B2 (ja) * 2005-02-14 2010-09-22 三桜工業株式会社 管体のシール構造
DE102005011574A1 (de) 2005-03-14 2006-09-21 Robert Bosch Gmbh Zwischenelement für ein Brennstoffeinspritzventil
US7293550B2 (en) * 2006-01-31 2007-11-13 Gm Global Technology Operations, Inc. Fuel injector isolation seat
US7513242B2 (en) * 2007-05-03 2009-04-07 Cummins Inc. Fuel injector assembly with injector seal retention
DE102007035714A1 (de) * 2007-07-30 2009-02-05 Robert Bosch Gmbh Brennstoff-Einspritzanlage mit Ausgleichselement
DE102008002654A1 (de) 2008-06-26 2009-12-31 Robert Bosch Gmbh Entkoppelungselement für eine Brennstoffeinspritzvorrichtung
EP2148082B1 (fr) * 2008-07-24 2011-10-19 Continental Automotive GmbH Arrangement de couplage pour une soupape d'injection et soupape d'injection
JP2010138809A (ja) * 2008-12-11 2010-06-24 Denso Corp 燃料噴射弁の取付け構造
DE102008054591A1 (de) 2008-12-12 2010-06-17 Robert Bosch Gmbh Entkopplungselement für eine Brennstoffeinspritzvorrichtung
JP4913174B2 (ja) * 2009-03-30 2012-04-11 愛知機械工業株式会社 インジェクタの取付構造およびシリンダヘッド側部材並びにこれを備える内燃機関
JP5558293B2 (ja) * 2010-09-22 2014-07-23 株式会社ケーヒン 燃料噴射弁の支持装置
DE102011003957A1 (de) * 2011-02-10 2012-08-16 Elringklinger Ag Dichtelement
DE102011089295A1 (de) 2011-12-20 2013-06-20 Robert Bosch Gmbh Entkopplungselement für eine Brennstoffeinspritzvorrichtung
DE102011089274A1 (de) * 2011-12-20 2013-06-20 Robert Bosch Gmbh Entkopplungselement für eine Brennstoffeinspritzvorrichtung
DE102012206194A1 (de) 2012-04-16 2013-10-17 Robert Bosch Gmbh Mehrteiliges Isolationselement, insbesondere für eine Brennstoffeinspritzvorrichtung
EP2806151A1 (fr) * 2013-05-20 2014-11-26 Perkins Engines Company Limited Injecteur à carburant
WO2015055603A1 (fr) * 2013-10-15 2015-04-23 Continental Automotive Gmbh Injecteur de carburant et système d'injection de carburant
JP5862712B2 (ja) * 2014-06-27 2016-02-16 株式会社デンソー 燃料噴射弁
DE102014217555A1 (de) 2014-09-03 2016-03-03 Robert Bosch Gmbh Entkopplungselement für eine Brennstoffeinspritzvorrichtung
DE102014225976A1 (de) 2014-12-16 2016-06-16 Robert Bosch Gmbh Brennstoffeinspritzvorrichtung
DE102014225988A1 (de) 2014-12-16 2016-06-16 Robert Bosch Gmbh Entkopplungselement für eine Brennstoffeinspritzvorrichtung
DE102015217500A1 (de) 2015-09-14 2017-03-16 Robert Bosch Gmbh Entkopplungselement für eine Brennstoffeinspritzvorrichtung
JP7156772B2 (ja) * 2016-01-29 2022-10-19 ロベルト・ボッシュ・ゲゼルシャフト・ミト・ベシュレンクテル・ハフツング 燃料噴射弁及び燃料噴射装置
DE102016225956A1 (de) 2016-12-22 2018-06-28 Robert Bosch Gmbh Entkopplungselement für eine Brennstoffeinspritzvorrichtung
DE102017218008A1 (de) 2017-10-10 2019-04-11 Robert Bosch Gmbh Entkopplungselement für eine Brennstoffeinspritzvorrichtung
DE102017218007A1 (de) 2017-10-10 2019-04-11 Robert Bosch Gmbh Entkopplungselement für eine Brennstoffeinspritzvorrichtung
DE102017218002A1 (de) 2017-10-10 2019-04-11 Robert Bosch Gmbh Entkopplungselement für eine Brennstoffeinspritzvorrichtung
DE102017220248A1 (de) 2017-11-14 2019-05-16 Robert Bosch Gmbh Brennstoffeinspritzvorrichtung
DE102018200335A1 (de) 2018-01-11 2019-07-11 Robert Bosch Gmbh Brennstoffeinspritzvorrichtung
DE102018004787B4 (de) 2018-06-14 2020-02-20 Neander Motors Ag Einspritzdüse für eine Brennkraftmaschine
DE102020214113A1 (de) 2020-11-10 2022-05-12 Robert Bosch Gesellschaft mit beschränkter Haftung Brennstoffeinspritzvorrichtung
DE102021214900A1 (de) 2021-12-22 2023-06-22 Robert Bosch Gesellschaft mit beschränkter Haftung Ventil zum Zumessen eines Fluids
DE102021214902A1 (de) 2021-12-22 2023-06-22 Robert Bosch Gesellschaft mit beschränkter Haftung Entkopplungselement für eine Brennstoffeinspritzvorrichtung

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US5247918A (en) * 1992-09-17 1993-09-28 Siemens Automotive L.P. Sealing a direct injection fuel injector to a combustion chamber
DE4240514A1 (de) 1992-12-02 1994-06-09 Kloeckner Humboldt Deutz Ag Einspritzventil mit verliersicherer Dichtscheibe
DE4443861A1 (de) 1994-12-09 1996-06-13 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
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DE10038763A1 (de) 2000-08-09 2002-02-21 Bosch Gmbh Robert Ausgleichselement für ein Brennstoffeinspritzventil
DE10108467A1 (de) * 2001-02-22 2002-09-05 Bosch Gmbh Robert Befestigungsvorrichtung
US6640784B1 (en) * 2002-10-09 2003-11-04 Robert Bosch Corporation Spark ignition direct injection system

Also Published As

Publication number Publication date
CZ20023458A3 (en) 2004-05-12
WO2002066822A1 (fr) 2002-08-29
DE10108466A1 (de) 2002-09-05
JP2004518853A (ja) 2004-06-24
DE50209159D1 (de) 2007-02-15
US20030145832A1 (en) 2003-08-07
EP1364119A1 (fr) 2003-11-26
US6807945B2 (en) 2004-10-26

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