WO2002066825A1 - Dispositif de fixation - Google Patents

Dispositif de fixation Download PDF

Info

Publication number
WO2002066825A1
WO2002066825A1 PCT/DE2002/000625 DE0200625W WO02066825A1 WO 2002066825 A1 WO2002066825 A1 WO 2002066825A1 DE 0200625 W DE0200625 W DE 0200625W WO 02066825 A1 WO02066825 A1 WO 02066825A1
Authority
WO
WIPO (PCT)
Prior art keywords
fuel
sleeve
fastening device
fuel injector
injection valve
Prior art date
Application number
PCT/DE2002/000625
Other languages
German (de)
English (en)
Inventor
Karl Gmelin
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 WO2002066825A1 publication Critical patent/WO2002066825A1/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
    • F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
    • F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02 - F02M69/44
    • F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
    • F02M69/465—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel rails
    • 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/004—Joints; Sealings
    • 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
    • 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 fastening device for fastening a fuel injection valve in a cylinder head of an internal combustion engine according to the preamble of the main claim.
  • a disadvantage of the fastening device known from DE 29 26 490 C2 is, in particular, the bracing effect of the various mounting parts on the fuel injector.
  • the force flow generated in the fuel injector leads to deformations and thus to changes in the stroke of the valve needle up to jamming and to a pressure or bending load on the housing parts, which are generally thin-walled and welded to one another at several points.
  • each fastening measure leads, for example, to an increase in the radial expansion of the fuel injection valve, and thus to an increased space requirement during installation, due to a support collar.
  • the holding down of a fuel injection valve with a clamping claw is known from JP-OS 08-31 25 03.
  • Fuel injector and the fuel distributor clamped sleeve is held down and consequently there is no need to attach the fuel injector to the cylinder head.
  • the fastening device ensures one through its elastic properties, which are achieved, for example, by an appropriate choice of materials
  • the sleeve is made of Teflon or an elastomer. It is also advantageous that the sleeve is clamped between a shoulder of the fuel injection valve and a shoulder of the fuel distributor line, which enables simple, space-saving and inexpensive installation.
  • Fig. 1 is a schematic, partially sectioned view of an embodiment of an inventive fastening device for a
  • Fig. 1 shows a schematic partial section through an embodiment of an inventive fastening device for a fuel injector.
  • a fuel injector 1 is designed in the form of a direct-injection fuel injector 1, which is installed in a cylinder head 2 for the direct injection of fuel into a combustion chamber of a mixture compression-ignition internal combustion engine, not shown, in particular.
  • the fuel injection valve 1 has at a feed 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 feed pipe 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 injector 1 has an intermediate ring 8 in a receiving bore 9 of the cylinder head 2, which serves as a bearing for the fuel injector 1 in the receiving bore 9.
  • the intermediate ring 8 is made of elastic material and ensures that the fuel injection valve 1 is centered in the receiving bore 9.
  • a sleeve 10 is provided according to the invention.
  • the sleeve 10 consists of a
  • ® elastic material for example Teflon or a
  • Fuel distributor line 4 formed.
  • the sleeve 10 has a recess 13, which makes the sleeve 10 easier to assemble. Due to the elasticity of the sleeve 10, the recess 13 has no effect on the reliability of the holding down of the fuel injector 1.
  • the described, preferred exemplary embodiment of a fastening device for a fuel injection valve 1 in the cylinder head 2 of an internal combustion engine is distinguished above all by a very simple and, in particular, space-saving construction, which uses the pressure force of the fuel distributor line 4 on the fuel injection valve 1 in a very effective manner, around the fuel injection valve 1 hold down in cylinder head 2.
  • the sleeve 10 is dimensioned such that both in the starting phase of the internal combustion engine, in which the combustion chamber pressure, the hold-down force of the fuel distributor line 4 exceeds, as well as during normal operation, the fuel injector 1 can be held down in the receiving bore 9 of the cylinder head 2.
  • offsets are avoided both in the radial and in the axial direction, which can arise, for example, from an inclined installation of the fuel injection valve 1 in the cylinder head 2, from manufacturing tolerances of individual components or from the heating of the components which occurs during operation of the internal combustion engine.
  • the tightness between fuel injection valve 1 and fuel distributor line 4 can also be ensured in these cases.
  • the sleeve 10 is also suitable for facilitating the assembly of the fuel injection valves 1 in the cylinder head 2, since the fuel injection valves 1 are preassembled on the fuel distributor line 4 and can all be installed in the cylinder head 2 together with the fuel distributor line 4.
  • 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)

Abstract

L"invention concerne un dispositif de fixation permettant une fixation alternée d"une soupape d"injection de carburant (1) dans une culasse de cylindre (2) de moteur à combustion interne et de la soupape d"injection de carburant (1) sur la conduite de distribution de carburant (4), qui comprend un manchon (10). Ledit manchon (11) est monté encastré entre un épaulement (11) de la conduite de distribution de carburant (4) et un épaulement (12) de la soupape d"injection de carburant (1) et est réalisé dans un matériau élastique.
PCT/DE2002/000625 2001-02-21 2002-02-21 Dispositif de fixation WO2002066825A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2001108193 DE10108193A1 (de) 2001-02-21 2001-02-21 Befestigungsvorrichtung
DE10108193.6 2001-02-21

Publications (1)

Publication Number Publication Date
WO2002066825A1 true WO2002066825A1 (fr) 2002-08-29

Family

ID=7674896

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2002/000625 WO2002066825A1 (fr) 2001-02-21 2002-02-21 Dispositif de fixation

Country Status (2)

Country Link
DE (1) DE10108193A1 (fr)
WO (1) WO2002066825A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009015948A1 (fr) * 2007-07-30 2009-02-05 Robert Bosch Gmbh Système d'injection de carburant avec un élément de compensation

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004048401A1 (de) 2004-10-01 2006-04-06 Robert Bosch Gmbh Niederhalter für eine Brennstoffeinspritzvorrichtung und Brennstoffeinspritzvorrichtung
EP1859160B1 (fr) 2005-03-03 2010-02-10 Robert Bosch GmbH Dispositif d'injection de carburant
DE102008002122A1 (de) 2008-05-30 2009-12-03 Robert Bosch Gmbh Niederhalter für eine Brennstoffeinspritzvorrichtung
DE102008055105A1 (de) 2008-12-22 2010-07-01 Robert Bosch Gmbh Brennstoffeinspritzvorrichtung
EP2251541B1 (fr) * 2009-05-11 2011-11-30 Continental Automotive GmbH Injecteur de carburant et système d'injection de carburant
DE102018218711A1 (de) 2018-10-31 2020-04-30 Robert Bosch Gmbh Niederhalter für eine Brennstoffeinspritzvorrichtung

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2208646A1 (de) * 1972-02-24 1973-08-30 Bosch Gmbh Robert Gemischverdichtende brennkraftmaschine
US4327690A (en) * 1978-06-24 1982-05-04 Robert Bosch Gmbh Fuel injection valve
JPS61261662A (ja) * 1985-05-14 1986-11-19 Honda Motor Co Ltd 燃料噴射式エンジンにおけるインジェクタの組み付け装置
EP0421358A1 (fr) * 1989-10-02 1991-04-10 Yamaha Hatsudoki Kabushiki Kaisha Montage d'injecteurs d'air et combustible
US5046469A (en) * 1989-03-10 1991-09-10 Robert Bosch Gmbh Fuel distributor for fuel injection systems of internal combustion engines
DE2926490C2 (fr) 1979-06-30 1992-04-09 Robert Bosch Gmbh, 7000 Stuttgart, De
JPH08312503A (ja) 1995-03-10 1996-11-26 Mitsubishi Motors Corp 固定対象物、特に筒内噴射型内燃機関用インジェクタの取付構造
US5927726A (en) * 1994-04-21 1999-07-27 Achenbach; Manfred Sealing arrangement for injection valves in fuel feed lines
JP2000249030A (ja) * 1999-02-26 2000-09-12 Keihin Corp 電磁式燃料噴射弁におけるシール部材の取付け構造
DE10012533A1 (de) * 1999-03-16 2000-09-28 Honda Motor Co Ltd Kraftstoffeinspritzvorrichtung

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2208646A1 (de) * 1972-02-24 1973-08-30 Bosch Gmbh Robert Gemischverdichtende brennkraftmaschine
US4327690A (en) * 1978-06-24 1982-05-04 Robert Bosch Gmbh Fuel injection valve
DE2926490C2 (fr) 1979-06-30 1992-04-09 Robert Bosch Gmbh, 7000 Stuttgart, De
JPS61261662A (ja) * 1985-05-14 1986-11-19 Honda Motor Co Ltd 燃料噴射式エンジンにおけるインジェクタの組み付け装置
US5046469A (en) * 1989-03-10 1991-09-10 Robert Bosch Gmbh Fuel distributor for fuel injection systems of internal combustion engines
EP0421358A1 (fr) * 1989-10-02 1991-04-10 Yamaha Hatsudoki Kabushiki Kaisha Montage d'injecteurs d'air et combustible
US5927726A (en) * 1994-04-21 1999-07-27 Achenbach; Manfred Sealing arrangement for injection valves in fuel feed lines
JPH08312503A (ja) 1995-03-10 1996-11-26 Mitsubishi Motors Corp 固定対象物、特に筒内噴射型内燃機関用インジェクタの取付構造
JP2000249030A (ja) * 1999-02-26 2000-09-12 Keihin Corp 電磁式燃料噴射弁におけるシール部材の取付け構造
DE10012533A1 (de) * 1999-03-16 2000-09-28 Honda Motor Co Ltd Kraftstoffeinspritzvorrichtung

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2000, no. 12 3 January 2001 (2001-01-03) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009015948A1 (fr) * 2007-07-30 2009-02-05 Robert Bosch Gmbh Système d'injection de carburant avec un élément de compensation
US8353272B2 (en) 2007-07-30 2013-01-15 Robert Bosch Gmbh Fuel injection system with compensation element

Also Published As

Publication number Publication date
DE10108193A1 (de) 2002-08-29

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