EP1364119A1 - Element de compensation pour soupape d'injection de carburant - Google Patents

Element de compensation pour soupape d'injection de carburant

Info

Publication number
EP1364119A1
EP1364119A1 EP02714056A EP02714056A EP1364119A1 EP 1364119 A1 EP1364119 A1 EP 1364119A1 EP 02714056 A EP02714056 A EP 02714056A EP 02714056 A EP02714056 A EP 02714056A EP 1364119 A1 EP1364119 A1 EP 1364119A1
Authority
EP
European Patent Office
Prior art keywords
washer
fuel injection
compensation element
injection valve
element according
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.)
Granted
Application number
EP02714056A
Other languages
German (de)
English (en)
Other versions
EP1364119B1 (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

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
    • 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 is based on a compensating element for a fuel injector according to the preamble of the main claim.
  • a fuel injection system which has a compensating element which consists of a support body which has a spherical support surface.
  • a fuel injector is supported via this compensating element in a receiving bore in a cylinder head. Since the fuel injection valve rests on the spherically shaped spherical cap surface with a support surface, the fuel injection valve can be mounted up to a certain angular deviation from the axis of the receiving bore and can be pressed firmly into the receiving bore by suitable means, for example a clamping claw. This enables simple adaptation to the fuel feed lines. Tolerances in the manufacture and assembly of the fuel injection valves can be compensated for.
  • the support body is complex to manufacture and requires a spherical surface to be produced precisely.
  • the rigid support body cannot are compressed and there is therefore no compensation in the axial direction of the receiving bore. Tolerances can only be compensated for on the specified geometry of the spherical surface. It is not possible to perform a radial compensating movement purely for the location bore.
  • Fuel injection valve receiving receiving bore of the cylinder head inserted washer with an oval or round cross section is stored, which does not have to perform a sealing function.
  • the compensation element ensures through its
  • the washer can be optionally slotted and then pressed onto a valve housing of the fuel injector by means of an interference fit or can be designed as a closed ring which is loosely fitted onto the valve housing.
  • the washer can advantageously be made of wire, which can consist, for example, of alloyed or unalloyed steel. ' Manufacturing from copper or a copper alloy is particularly advantageous, since copper has a high thermal conductivity and a good surface adaptation.
  • Fig. 1 is a schematic, partially sectioned view of an embodiment of a compensating element designed according to the invention for a
  • Fuel injection valve in a cylinder head of an internal combustion engine Fuel injection valve in a cylinder head of an internal combustion engine
  • FIG. 2 shows a schematic section from the compensation element according to the invention shown in FIG. 1 in area II in FIG. 1.
  • Fig. 1 shows a schematic partial section through an embodiment of a compensating element designed according to the invention for a fuel injector in a receiving bore of a cylinder head of a mixture-compressing, spark-ignition internal combustion engine.
  • a fuel injection valve 1 is designed in the form of a direct injection fuel injection valve 1 and installed in a cylinder head 2 of an internal combustion engine.
  • the fuel injection valve 1 has a plug connection to a fuel distributor line 4 at an inlet-side end 3, which is sealed by a seal 5 between the fuel distributor line 4 and a supply line connector 6 of the fuel injection valve 1.
  • the fuel injector 1 has an electrical connection 7 for the electrical Contact for actuating the fuel injector 1.
  • the fuel injection valve 1 has a washer 8 in a receiving bore 9 of the cylinder head 2, which is used as a compensating element for the fuel injection valve 1 in the receiving bore 9.
  • the washer 8 fulfills several functions. On the one hand, by spacing the fuel injection valve 1 from a wall 10 of the receiving bore 9, a centering of the fuel injection valve 1 can be achieved, which counteracts tilting of the fuel injection valve 1, for example in the area of a nozzle body 11 of the fuel injection valve 1, and thus for the sealing effect of a sealing ring placed on the nozzle body 11 12, which seals the cylinder head 2 against the combustion chamber of the internal combustion engine, not shown, contributes.
  • Temperature-related tolerances which occur for example due to the heating of the fuel injection valve 1 and the cylinder head 2 during the operation of the internal combustion engine, can be compensated for by the washer 8. Tolerances of this type can lead, for example, to loads and tensions in the plug connection between the fuel injection valve 1 and the fuel distributor line 4.
  • the material for producing the washer 8, which can be drawn as wire and then bent, for example, is stainless steel, unalloyed, but surface-treated steel for better heat conduction or copper or copper alloys.
  • the latter in particular are characterized by high thermal conductivity and good surface adaptation through plastic deformability.
  • the lower ring 8 can have a round cross section or can also be oval in shape.
  • the fuel injector 1 can be fitted either by a clearance fit or by a press fit.
  • the clearance fit which allows the washer 8 to assume an optimal position in accordance with the prevailing conditions, is particularly suitable for closed washers 8, while the press fit, which is particularly easy to achieve with slotted washers 8, provides effective protection against the loss of the washer 8 offers when installing and removing the fuel injector 1.
  • FIG. 2 shows a schematic excerpt from the compensation element according to the invention shown in FIG. 1 in area II in FIG. 1.
  • FIG. 2 does not require any modifications with regard to the shape of the receiving bore 9 of the cylinder head 2 or the valve housing 13 of the fuel injector 1 to install the washer 8.
  • the fuel injection valve 1 rests with a shoulder 14 of the valve housing 13, which is chamfered at an angle of approximately 45 °, against a shoulder 15 of the cylinder head 2 in the receiving bore 9, which has an at least similar, better same angle of inclination.
  • the tolerances mentioned above occur due to manufacturing inaccuracies and heating.
  • the washer 8 is simply placed on the shoulder 15 of the cylinder head 2 or on the valve housing 13 in the The area of the shoulder 14 is plugged on, whereby the previous shoulder closure between the fuel injection valve 1 and the receiving bore 9 is opened at a distance which corresponds to the diameter of the washer 8.
  • This enables the washer to assume an optimal position corresponding to the circumstances, which can also result, for example, in the ring being tilted or distorted relative to a longitudinal axis 16 of the fuel injection valve 1 or the receiving bore 9.
  • This enables the desired tolerance compensation, which prevents tensions from building up and subsequent malfunctions.
  • the invention is not limited to the exemplary embodiment shown and can also be used, for example, for fuel injection valves 1 for injection into the combustion chamber of a self-igniting internal combustion engine.

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)

Abstract

L"invention concerne un élément de compensation destiné au logement et au support d"une soupape d"injection de carburant (1) dans une culasse (2) de moteur à combustion interne. Cet élément se présente sous la forme d"une rondelle de support (8) disposée entre le corps (13) de la soupape d"injection (1) et la paroi (10) d"un alésage de positionnement (9) de la culasse (2). L"invention est caractérisée en ce que cette rondelle de support (8) comporte une section transversale ronde ou ovale et qu"elle sert à espacer un épaulement (14) du corps de soupape (13) d"un épaulement (15) de la culasse (2).
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
DE10108466 2001-02-22
DE10108466A DE10108466A1 (de) 2001-02-22 2001-02-22 Ausgleichselement für ein Brennstoffeinspritzventil
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 true EP1364119A1 (fr) 2003-11-26
EP1364119B1 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)

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Publication number Priority date Publication date Assignee Title
DE10338715B4 (de) 2003-08-22 2014-07-17 Robert Bosch Gmbh Ausgleichselement für ein Brennstoffeinspritzventil
US20070191562A1 (en) * 2004-03-23 2007-08-16 L'oreal S.A. Composition comprising a monomer compound exhibiting an optical property, method making use of said composition, a monomer compound, a polymer containing said monomer compound and the use thereof
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
DE102011089274A1 (de) * 2011-12-20 2013-06-20 Robert Bosch Gmbh Entkopplungselement für eine Brennstoffeinspritzvorrichtung
DE102011089295A1 (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
US10018168B2 (en) 2013-10-15 2018-07-10 Continental Automotive Gmbh Fuel injector and fuel-injection system
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
DE102014225988A1 (de) 2014-12-16 2016-06-16 Robert Bosch Gmbh Entkopplungselement für eine Brennstoffeinspritzvorrichtung
DE102014225976A1 (de) 2014-12-16 2016-06-16 Robert Bosch Gmbh 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
DE102021214902A1 (de) 2021-12-22 2023-06-22 Robert Bosch Gesellschaft mit beschränkter Haftung Entkopplungselement für eine Brennstoffeinspritzvorrichtung
DE102021214900A1 (de) 2021-12-22 2023-06-22 Robert Bosch Gesellschaft mit beschränkter Haftung Ventil zum Zumessen eines Fluids

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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
JPH10252609A (ja) * 1997-01-13 1998-09-22 Yamaha Motor Co Ltd 筒内噴射エンジン
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IT1306311B1 (it) * 1998-07-01 2001-06-04 Magneti Marelli Spa Sistema di accoppiamento tra testata del motore,iniettore e collettorecarburante .
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
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Also Published As

Publication number Publication date
DE50209159D1 (de) 2007-02-15
DE10108466A1 (de) 2002-09-05
JP2004518853A (ja) 2004-06-24
US6807945B2 (en) 2004-10-26
CZ20023458A3 (en) 2004-05-12
US20030145832A1 (en) 2003-08-07
EP1364119B1 (fr) 2007-01-03
WO2002066822A1 (fr) 2002-08-29

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