EP1309797B1 - 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
EP1309797B1
EP1309797B1 EP01962601A EP01962601A EP1309797B1 EP 1309797 B1 EP1309797 B1 EP 1309797B1 EP 01962601 A EP01962601 A EP 01962601A EP 01962601 A EP01962601 A EP 01962601A EP 1309797 B1 EP1309797 B1 EP 1309797B1
Authority
EP
European Patent Office
Prior art keywords
ring
rigid
compensation element
fuel injector
fuel
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
EP01962601A
Other languages
German (de)
English (en)
Other versions
EP1309797A1 (fr
Inventor
Rainer Norgauer
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 EP1309797A1 publication Critical patent/EP1309797A1/fr
Application granted granted Critical
Publication of EP1309797B1 publication Critical patent/EP1309797B1/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

Definitions

  • the invention is based on a compensating element for Fuel injection valve according to the preamble of claim 1.
  • DE 197 35 665 A1 describes a fuel injection system known that has a compensating element that consists of a Support body consists of a spherical support surface Has.
  • a fuel injector supports this Compensation element in a mounting hole of a Cylinder head. Because the fuel injector is on the spherical dome surface with a The fuel injector can support up to to a certain angular deviation from the axis of the Mounting hole can be mounted and firmly in the Location hole by suitable means, such as a Clamping claw can be pressed. This makes it easy Adaptation to the fuel supply lines enabled. Tolerances in the manufacture and assembly of the Fuel injectors can be balanced.
  • the support body is too expensive is to manufacture and a spherical surface to be produced precisely requires.
  • the rigid support body cannot are compressed and there is therefore no compensation in the axial direction of the location hole.
  • the balance of Tolerances can only be based on the given geometry Spherical surface. It is not purely for the mounting hole radial compensation movement possible.
  • the additional effort with several more is disadvantageous Components and the additional number of to be sealed Links. Because the intermediate piece has an additional height conditionally, it can only be made relatively short. This leads to that to be compensated for even at low Offset the axes a relatively large angle of Intermediate piece to the axes is required.
  • the Sealing with a sealing ring between Fuel injector and adapter on the one hand and Fuel outlet opening and intermediate piece on the other hand is only based on Elasticity of the respective sealing ring. If the angle is too large there is therefore a risk that the sealing rings are not one even pressure between the respective sealing surfaces subject to what can lead to leaks.
  • a heat protection sleeve is known from DE 197 43 103 A1, which is a fuel injector on a nozzle body encloses.
  • the heat protection sleeve is graded Location bore of a cylinder head Internal combustion engine used and encloses one spray-side nozzle body section one in the Receiving hole used fuel injector extensively.
  • the heat protection sleeve has one at one end Collar that abuts a step of the mounting hole. Furthermore, it has one at its spray end bent section, which over a certain length Sleeve is double-layered. In this area is the Sleeve between the nozzle body and the bore in the cylinder head radially jammed.
  • the fuel injector is also present an inclined step of the mounting hole, whereby the Axis position of the fuel injector completely is determined.
  • a fuel injector is already known, which is in a Location bore of a cylinder head of an internal combustion engine can be used.
  • the Fuel injection valve is used for the direct injection of fuel into one Combustion chamber of the internal combustion engine.
  • the fuel injector is surrounded by a three-part compensation element.
  • the compensating element has two Rigid copper rings that can be placed circumferentially on the fuel injector. Between the two copper rings there is an elastic one connected to both rings Intermediate ring arranged.
  • the two copper rings are flat, flat and disc-shaped executed only to be perpendicular to the longitudinal axis of the valve Shoulders of the fuel injector or shoulders of the fuel injector optimally support the mounting hole in the cylinder head.
  • the compensation element according to the invention with the has characteristic features of the main claim in contrast, the advantage that it is both a tilt of the Fuel injector to the axis of the location hole over a relatively wide range of angles as well Moving the fuel injector out of the Central axis, which allows the radial receiving hole. Moreover the compensation element according to the invention is simple and inexpensive to manufacture.
  • the compensating element transmits the axial force between the fuel injector and Location hole in the cylinder head through which the Fuel injection valve against the holding force fixing it supported.
  • the holding force and position of the Fuel injector can be set easily because the compensating element advantageously in the axial direction
  • the mounting hole yields flexibly and through the Compressibility of the intermediate ring the increase in Holding force over the immersion depth of the Fuel injector adjustable in the mounting hole is.
  • Compensating elements therefore leaves relatively large Manufacturing tolerances in the manufacture of both Cylinder head as well as in the manufacture of the Fuel injector and the fuel rail to.
  • the first ring has a conical surface. This can be on a conical shoulder of the Fuel injector come to rest. This will centered the fuel injector in the first ring and led. The tolerance compensation is then carried out safely elastic deformation of the intermediate ring and not by a incorrect position of the compensation element.
  • the first and second ring can be advantageous Sheet metal stampings exist that can be manufactured inexpensively are.
  • Fig. 1 shows a fuel injector 1 with a compensation element according to the invention 2.
  • the fuel injector 1 is used to inject fuel a mixture-compressing, spark-ignition internal combustion engine.
  • the fuel injector 1 shown is a high pressure injector for direct injection of Fuel in a combustion chamber 3 of the internal combustion engine, the in the drawing below one only partially shown Cylinder head 4 lies.
  • the invention Compensating element 2 can, however, also in other cases be applied.
  • the fuel injection valve 1 has a nozzle body 5 with a spray end 6 and is in one Receiving hole 7 of the cut, hinted shown cylinder head 4 mounted.
  • FIG. 1 further shows one in a groove 8 of the nozzle body 5 lying, combustion chamber-side sealing ring 9, the one Annular gap 10 between nozzle body 5 and receiving bore 7 seals and consists, for example, of Teflon®.
  • Fig. 1 shows further on the fuel injector 1 fuel feed 11 shown in section, for example a fuel distribution line, which means a sealing ring 12 opposite a connecting piece 13 of the Fuel injector 1 is sealed.
  • the sealing ring 12 is of a flange 14 of the connecting piece 13 and a support ring 15 out.
  • a connector 16 serves as an example here provided fuel injector 1 with electrical Control for connecting a not shown here electrical control line.
  • the compensating element 2 has a rigid first ring 18 as well as a rigid second ring 19 and an elastic Intermediate ring 20 on in the selected embodiment by vulcanizing the elastic made of rubber Intermediate ring 20 are non-detachably connected. It are also versions made of other elastic material such as for example another elastomer or Teflon® or a gluing of the elastic intermediate ring 20 with the first Ring 18 and second ring 19 conceivable.
  • a valve center axis 21 of the Fuel injector 1 shown This can be done by elastic deformation of the elastic intermediate ring 20 and a possible adjustment movement of the Fuel injector 1 to the geometric position of the Fuel inlet 11 both by a distance d and additionally by an angle ⁇ from a bore center axis 22 deviate.
  • Fig. 2 shows an enlarged view of section II in Fig. 1.
  • the nozzle body 5 is shown Housing section 23 of the fuel injector 1 with larger diameter and a conical shoulder 24 of the Fuel injector 1.
  • the compensating element 2 is shown cut.
  • the rigid first ring 18 has an inner conical surface 25 on the on the conical shoulder 24 of the Fuel injector 1 is present.
  • the rigid second ring 19 has a flat annular surface 26 which a gradation 27 of the receiving bore 7 is present.
  • the elastic intermediate ring 20 permanently connects the rigid first ring 18 and with the rigid second ring 19. Between Nozzle body 5 and receiving bore 7 is located Annular gap 10. Both the intermediate ring 20 and the second Ring 19 have a largely rectangular cross section on.
  • the fuel injector 1 is advantageously centered through the conical shoulder 24 and the conical surface 25 the rigid first ring 18 and can also on this to the Valve center axis 21 transmit radial forces.
  • the clamping claw not shown, turns that Fuel injector 1 by stronger on one side Compression of the elastic intermediate ring 20 automatically the necessary tilt angle ⁇ and by that of Fuel injector 1 transferred power to the necessary Distance d of a radial displacement, so that the Fuel inlet 11 with the fuel injection valve 1 is connected without tension.
  • the rigid first ring 18 is preferably in relation to FIG its center opposite the rigid second ring 19 in relation to its center through elastic deformation of the elastic intermediate ring 20 radially displaceable.
  • the rigid first ring 18 is preferably related on a central axis opposite the rigid.
  • second Ring 19 in relation to one laid by this Center axis through elastic deformation of the elastic intermediate ring 20 tiltable.
  • the elastic intermediate ring 20 also advantageously reduces the compensating element 2 a transmission of structure-borne noise, Vibrations and heat between cylinder head 4 and Fuel injector 1.

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 (7)

  1. Elément de compensation (2) pour un injecteur de carburant (1), pouvant être insérée dans un perçage de réception (7) d'une tête de cylindre (4) d'un moteur à combustion interne en vue de l'injection directe de carburant dans la chambre de combustion (3) du moteur à combustion interne,
    comprenant un premier anneau rigide (18) qui peut être placé contre l'injecteur (1) autour de son périmètre, un second anneau rigide (19) inséré dans le perçage de réception (7), et disposé entre ces deux anneaux (18, 19), un anneau intermédiaire élastique (20) relié de manière indissociable au premier anneau rigide (18) et au second anneau rigide (19),
    caractérisé en ce que
    le premier anneau rigide (18) présente une surface conique (25) qui peut être placée contre un épaulement conique (24) de l'injecteur (1).
  2. Elément de compensation selon la revendication 1,
    caractérisé en ce que
    l'anneau intermédiaire élastique (20) est en élastomère, et le premier (18) et le second anneau rigide (19) sont en métal.
  3. Elément de compensation selon la revendication 2,
    caractérisé en ce que
    le premier (18) et le second anneau rigide (19) sont reliés à l'anneau intermédiaire élastique (20) par vulcanisation.
  4. Elément de compensation selon l'une des revendications 1 à 3,
    caractérisé en ce que
    le second anneau rigide (19) présente une surface annulaire (26) qui peut être placée contre un échelonnement (27) du perçage de réception (7).
  5. Elément de compensation selon l'une des revendications 1 à 4,
    caractérisé en ce que
    le premier (18) et/ou le second anneau rigide (19) sont constitués d'une pièce découpée en tôle.
  6. Elément de compensation selon l'une des revendications 1 à 5,
    caractérisé en ce que
    le premier anneau rigide (18), rapporté à son centre, peut être déplacé radialement, sous l'effet d'une déformation élastique de l'anneau intermédiaire élastique (20), vis-à-vis du second anneau rigide (19) rapporté au centre de celui-ci.
  7. Elément de compensation selon l'une des revendications 1 à 6,
    caractérisé en ce que
    le premier anneau rigide (18), rapporté à un axe central, peut être désaligné angulairement, sous l'effet d'une déformation élastique de l'anneau intermédiaire élastique (20), vis-à-vis du second anneau rigide (19) rapporté à un axe central placé au travers de celui-ci.
EP01962601A 2000-08-09 2001-08-03 Element de compensation pour soupape d'injection de carburant Expired - Lifetime EP1309797B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10038763A DE10038763A1 (de) 2000-08-09 2000-08-09 Ausgleichselement für ein Brennstoffeinspritzventil
DE10038763 2000-08-09
PCT/DE2001/002967 WO2002012718A1 (fr) 2000-08-09 2001-08-03 Element de compensation pour soupape d"injection de carburant

Publications (2)

Publication Number Publication Date
EP1309797A1 EP1309797A1 (fr) 2003-05-14
EP1309797B1 true EP1309797B1 (fr) 2004-11-03

Family

ID=7651781

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01962601A Expired - Lifetime EP1309797B1 (fr) 2000-08-09 2001-08-03 Element de compensation pour soupape d'injection de carburant

Country Status (8)

Country Link
US (1) US6899087B2 (fr)
EP (1) EP1309797B1 (fr)
JP (1) JP2004506136A (fr)
KR (1) KR20030023735A (fr)
CN (1) CN1446288A (fr)
CZ (1) CZ2003389A3 (fr)
DE (2) DE10038763A1 (fr)
WO (1) WO2002012718A1 (fr)

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DE10338715B4 (de) 2003-08-22 2014-07-17 Robert Bosch Gmbh Ausgleichselement für ein Brennstoffeinspritzventil
DE102004049277A1 (de) * 2004-10-09 2006-04-13 Robert Bosch Gmbh Dämpfungselement für ein Brennstoffeinspritzventil
FR2878582B1 (fr) * 2004-11-30 2007-04-27 Renault Sas Moteur comprenant un joint interpose entre la culasse et chaque buse d'injection
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DE102006009094A1 (de) * 2006-02-28 2007-08-30 Bayerische Motoren Werke Ag Dämpfungseinrichtung und Dämpfungselement
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DE102007002682A1 (de) * 2007-01-18 2008-07-24 Bayerische Motoren Werke Aktiengesellschaft Dämpfungseinrichtung und Dämpfungselement
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
DE102008032385B4 (de) 2008-07-09 2018-03-29 Audi Ag Hochdruckeinspritzanordnung für eine direkteinspritzende Brennkraftmaschine
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DE102008054591A1 (de) 2008-12-12 2010-06-17 Robert Bosch Gmbh Entkopplungselement für eine Brennstoffeinspritzvorrichtung
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EP2599990B1 (fr) 2010-07-30 2015-09-02 Toyota Jidosha Kabushiki Kaisha Isolant amortisseur de vibrations pour injecteur de carburant
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DE102012206194A1 (de) 2012-04-16 2013-10-17 Robert Bosch Gmbh Mehrteiliges Isolationselement, insbesondere für eine Brennstoffeinspritzvorrichtung
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JP6251224B2 (ja) * 2014-12-04 2017-12-20 株式会社ケーヒン 内燃機関における燃料噴射弁の防振構造
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DE102014225988A1 (de) 2014-12-16 2016-06-16 Robert Bosch Gmbh Entkopplungselement für eine Brennstoffeinspritzvorrichtung
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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
DE102016211689A1 (de) * 2016-06-29 2018-01-04 Robert Bosch Gmbh Injektor mit Dämpfungselement
DE102016225706A1 (de) * 2016-12-21 2018-06-21 Robert Bosch Gmbh Ventil zum Zumessen eines Fluids
DE102016225956A1 (de) 2016-12-22 2018-06-28 Robert Bosch Gmbh Entkopplungselement für eine Brennstoffeinspritzvorrichtung
CN107299872A (zh) * 2017-06-21 2017-10-27 重庆长安汽车股份有限公司 一种有效降低汽油直喷发动机工作噪音的喷油器支撑环
DE102017218002A1 (de) 2017-10-10 2019-04-11 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
DE102017220248A1 (de) 2017-11-14 2019-05-16 Robert Bosch Gmbh Brennstoffeinspritzvorrichtung
DE102017221203A1 (de) 2017-11-27 2019-05-29 Hyundai Motor Company Kraftstoffeinspritzsystem und Verfahren zum Betreiben eines Kraftstoffeinspritzsystems
US11174825B2 (en) * 2019-02-11 2021-11-16 Caterpillar Inc. Seal configuration for fuel injector
CN110617155A (zh) * 2019-09-26 2019-12-27 安徽全柴动力股份有限公司 一种适用于四气门柴油机的电控喷油器总成
DE102020214113A1 (de) 2020-11-10 2022-05-12 Robert Bosch Gesellschaft mit beschränkter Haftung Brennstoffeinspritzvorrichtung
JP7476827B2 (ja) * 2021-03-12 2024-05-01 トヨタ自動車株式会社 燃料噴射装置用制振インシュレータ
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
DE102022001464B4 (de) * 2022-04-26 2023-11-02 Deutz Aktiengesellschaft Zylinderkopf für eine Brennkraftmaschine

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Also Published As

Publication number Publication date
DE10038763A1 (de) 2002-02-21
US6899087B2 (en) 2005-05-31
CN1446288A (zh) 2003-10-01
US20040020470A1 (en) 2004-02-05
WO2002012718A1 (fr) 2002-02-14
KR20030023735A (ko) 2003-03-19
JP2004506136A (ja) 2004-02-26
EP1309797A1 (fr) 2003-05-14
DE50104417D1 (de) 2004-12-09
CZ2003389A3 (cs) 2004-09-15

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