WO2003054383A1 - Dispositif de fixation - Google Patents

Dispositif de fixation Download PDF

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Publication number
WO2003054383A1
WO2003054383A1 PCT/DE2002/004659 DE0204659W WO03054383A1 WO 2003054383 A1 WO2003054383 A1 WO 2003054383A1 DE 0204659 W DE0204659 W DE 0204659W WO 03054383 A1 WO03054383 A1 WO 03054383A1
Authority
WO
WIPO (PCT)
Prior art keywords
fastening device
fuel
spring clip
spring
fuel injector
Prior art date
Application number
PCT/DE2002/004659
Other languages
German (de)
English (en)
Inventor
Ferdinand Reiter
Jens Pohlmann
Marielle Cuvilliler
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 WO2003054383A1 publication Critical patent/WO2003054383A1/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
    • 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
    • F02M61/168—Assembling; Disassembling; Manufacturing; Adjusting
    • 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
    • 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
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for
    • 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
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/8023—Fuel injection apparatus manufacture, repair or assembly the assembly involving use of quick-acting mechanisms, e.g. clips
    • 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
    • F02M2200/80—Fuel injection apparatus manufacture, repair or assembly
    • F02M2200/803—Fuel injection apparatus manufacture, repair or assembly using clamp elements and fastening means; e.g. bolts or screws
    • 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
    • F02M2200/856—Mounting of fuel injection apparatus characterised by mounting injector to fuel or common rail, or vice versa

Definitions

  • the invention is based on a fastening device for fastening a fuel injection valve in a cylinder head of an internal combustion engine and for connecting the fuel injection valve to a fuel distributor line 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.
  • Spring tabs is held together and therefore there is no need to attach the fuel injector to the cylinder head.
  • the fastening device ensures both a transfer of the elastic spring tabs
  • the wave-shaped spring tabs can be produced in a simple manner and, due to the elastic connection with the spring sleeve, ensure simple assembly and secure clamping of the components.
  • both the fastening device and the elastic spring tabs can be produced in a simple manner by stamping from sheet metal. Manufacturing by deep drawing and punching is also possible.
  • screws or clamping claws for fastening to the end face of the cylinder head are advantageously omitted.
  • Fig. 1 is a schematic, partially sectioned view of an embodiment of an inventive fastening device for a
  • Fig. 2. is a perspective view of the fastening device according to the invention.
  • 3A-D are schematic views of the embodiment of a fastening device according to the invention shown in FIG. 1.
  • Description of the embodiment 1 shows a schematic partial section through an exemplary embodiment of a fastening device for a fuel injector designed according to the invention on a fuel distributor line.
  • a fuel injector 1 is designed in the form of a direct injection fuel injector 1, which is installed in a valve seat 20 of 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 valve receptacles 20 can also be provided on an ähmestutzen a suction pipe, not shown.
  • the fuel injection valve 1 has at an inlet end 3 a plug connection to a receiving connector of a fuel distributor line 4, which is sealed by a seal 5 between the fuel distributor line 4 and a supply connector 6 of the fuel injector 1.
  • the fuel injector 1 has an electrical connection 7 for the electrical contacting for actuating the fuel injector 1.
  • Fastening device 10 consists of a spring clip
  • Fuel distribution line 4 and on the other hand is supported on a shoulder 13 of the fuel injection valve 1.
  • Spring clip 11 is preferably punched out of spring steel sheet. Also by punching two
  • FIGS. 2 and 3A to 3D Views in FIGS. 2 and 3A to 3D and the following
  • the spring clip 11 can be slotted in the area of the electrical connection 7 of the fuel injection valve 1 in order to facilitate the .assembly. Due to the spring clip 11 made of spring steel sheet, the slotted shape has no effect on the reliability of the fastening device 10.
  • the spring clip 11 can preferably have projections 15 which are formed in the area of the spring clip 11 facing the fuel injector 1.
  • the projections 15 are slightly bent inwards and in turn slightly bent outwards at their ends. On the one hand, this makes it easier to slide the spring clip 11 onto the fuel injection valve 1 and, on the other hand, ensures that the spring clip 11 is held securely on the fuel injection valve 1.
  • Fig. 2 shows a schematic, perspective view of the spring clip 11 in the unassembled state.
  • the spring clip 11 can be produced by stamping from spring steel. It is punched out of one piece including the spring tabs 14 and then bent into its intended shape.
  • the spring tabs 14 are wave-shaped and folded inwards so that, as can be seen in FIG. 1, they engage under the shoulder 12 of the fuel rail 4. Due to the shape of the spring tabs 14 and their elastic connection with the spring clip 11, the fuel injector zventil 1 is braced against the fuel rail 4.
  • FIGS. 1 and 2 illustrate schematic views and partial sections of the exemplary embodiment of a fastening device 10 according to the invention shown in FIGS. 1 and 2 in the non-assembled state of the fastening device 10.
  • FIGS. 1 and 2 show schematic views and partial sections of the exemplary embodiment of a fastening device 10 according to the invention shown in FIGS. 1 and 2 in the non-assembled state of the fastening device 10.
  • 3A shows a front view of the fastening device 10 designed according to the invention
  • FIG. 3B shows a side view
  • FIG. 3C shows a bottom view
  • FIG. 3D shows a partial section through the spring clip 11 along the line IIID-IIID in FIG. 3A.
  • the projections 15 are bent out at their ends in a chamfer-like manner.
  • the projections 15 can also engage undercuts 17 in a plastic casing 18 of the fuel injector 1.
  • the wavy spring tabs 14 are particularly clear. recognizable.
  • the shape of the spring tabs 14 'on the one hand enables the fuel injection valve 1 to be braced against the fuel distributor line 4 and on the other hand simple manufacture and assembly of the spring clip 11.
  • tabs 19 are provided which are bent into the spring clip opposite the starting points of the spring tabs 14. With increased pressure of the fuel distributor line 4 on the spring tabs 14, these rest on the tabs 19. The spring effect is retained by the arched shape of the spring tabs 14.
  • the recesses 16, which are penetrated by the shoulder 12 of the fuel distributor line 4 are also clearly visible.
  • the intervention of the fuel distribution line 4 'in the recesses 16 ensures on the one hand that . the fuel injector 1 can not twist in the cylinder head, and on the other hand that the fuel injector 1 if necessary with the
  • Fuel distributor line 4 as an overall component on
  • Cylinder head 2 of the internal combustion engine can be assembled and disassembled.
  • Fastening device 10 becomes a reliable one
  • the resilient shape of the spring clip 11 and the spring tabs 14 can ensure that the spring clip 11 bears against both the fuel injector 1 and the fuel distributor line 4 and thereby exerts a centering effect. This also bending forces on the fuel injector 1, which can lead to misalignments of the valve needle up to the jamming can 'be avoided.
  • the resilient bracing of the components against one another can compensate for manufacturing tolerances and changes in length due to heating during operation of the internal combustion engine.
  • 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)
  • Manufacturing & Machinery (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

L'invention concerne un dispositif de fixation pour fixer une soupape d'injection de carburant (1) dans une culasse de cylindre (2) d'un moteur à combustion interne et pour fixer ladite soupape d'injection de carburant (1) sur une conduite de distribution de carburant (4). Ce dispositif de fixation se présente sous la forme d'une sauterelle de fixation (11) comprenant des jumelles (14) ondulées qui prennent appui sur un épaulement (12) de la conduite de distribution de carburant (4).
PCT/DE2002/004659 2001-12-20 2002-12-19 Dispositif de fixation WO2003054383A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10163030.1 2001-12-20
DE2001163030 DE10163030B4 (de) 2001-12-20 2001-12-20 Befestigungsvorrichtung

Publications (1)

Publication Number Publication Date
WO2003054383A1 true WO2003054383A1 (fr) 2003-07-03

Family

ID=7710211

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2002/004659 WO2003054383A1 (fr) 2001-12-20 2002-12-19 Dispositif de fixation

Country Status (2)

Country Link
DE (1) DE10163030B4 (fr)
WO (1) WO2003054383A1 (fr)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004051074A1 (fr) * 2002-12-04 2004-06-17 Robert Bosch Gmbh Element d'appui
EP1544455A3 (fr) * 2003-12-16 2006-03-15 Robert Bosch Gmbh Injecteur à combustible
EP1892408A1 (fr) * 2006-08-21 2008-02-27 Siemens Aktiengesellschaft Injecteur, gobelet pour l'alimentation en carburant et support
EP2077390A1 (fr) * 2008-01-07 2009-07-08 Continental Automotive GmbH Agencement de couplage et ensemble de connexion
US7560835B2 (en) 2004-11-16 2009-07-14 Bosch Rexroth Ag Electrical induction machine and primary part
WO2009144069A1 (fr) * 2008-05-30 2009-12-03 Robert Bosch Gmbh Élément de retenue pour dispositif d'injection de carburant
CN103291517A (zh) * 2012-02-27 2013-09-11 株式会社京浜 燃料喷射阀的支承结构
CN104564470A (zh) * 2013-10-10 2015-04-29 大陆汽车有限公司 用于燃烧发动机的流体喷射组件

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10239142A1 (de) * 2002-08-27 2004-04-29 Daimlerchrysler Ag Kraftstoffeinspritzvorrichtung für eine Brennkraftmaschine
DE10359299A1 (de) 2003-12-17 2005-08-25 Robert Bosch Gmbh Stützelement
US7373926B2 (en) 2004-02-26 2008-05-20 Robert Bosch Gmbh Support element
DE102004047035B4 (de) * 2004-02-26 2017-02-09 Robert Bosch Gmbh Stützelement
DE102004048401A1 (de) * 2004-10-01 2006-04-06 Robert Bosch Gmbh Niederhalter für eine Brennstoffeinspritzvorrichtung und Brennstoffeinspritzvorrichtung
DE102007035714A1 (de) 2007-07-30 2009-02-05 Robert Bosch Gmbh Brennstoff-Einspritzanlage mit Ausgleichselement
EP2388469B1 (fr) 2010-05-18 2013-03-13 Continental Automotive GmbH Capuchon de carburant
JP5822271B2 (ja) * 2012-02-27 2015-11-24 株式会社ケーヒン 燃料噴射弁の支持構造

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3428597A1 (de) * 1984-08-02 1986-02-13 Bayerische Motoren Werke AG, 8000 München Verbindung zwei koaxial hintereinander angeordneter rohrabschnitte, insbesondere einer einspritzduese mit dem koaxial angeordneten anschlussstutzen einer einspritzleitung
DE2926490C2 (fr) 1979-06-30 1992-04-09 Robert Bosch Gmbh, 7000 Stuttgart, De
US5803052A (en) * 1997-06-27 1998-09-08 Siemens Automotive Corporation Spring clip for retaining a fuel injector in a fuel rail cup
US5970953A (en) * 1999-01-12 1999-10-26 Siemens Automotive Corporation High pressure injector clip
US6148797A (en) * 1997-12-17 2000-11-21 Robert Bosch Gmbh Mounting device for mounting fuel injection valves
DE19937444C1 (de) * 1999-08-07 2001-01-18 Winkelmann & Pannhoff Gmbh Vorrichtung zur Verteilung von Kraftstoff für Kraftstoffeinspritzanlagen von Verbrennungsmotoren
US6276339B1 (en) * 2000-05-02 2001-08-21 Delphi Technologies, Inc. Fuel injector spring clip assembly

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4993390A (en) * 1988-05-27 1991-02-19 Mitsubishi Jidosha Kogyo Akbushiki Kaisha Injector positioning device
DE4017875C2 (de) * 1990-06-02 1999-02-04 Bosch Gmbh Robert Brennstoffeinspritzeinrichtung für Brennkraftmaschinen

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2926490C2 (fr) 1979-06-30 1992-04-09 Robert Bosch Gmbh, 7000 Stuttgart, De
DE3428597A1 (de) * 1984-08-02 1986-02-13 Bayerische Motoren Werke AG, 8000 München Verbindung zwei koaxial hintereinander angeordneter rohrabschnitte, insbesondere einer einspritzduese mit dem koaxial angeordneten anschlussstutzen einer einspritzleitung
US5803052A (en) * 1997-06-27 1998-09-08 Siemens Automotive Corporation Spring clip for retaining a fuel injector in a fuel rail cup
US6148797A (en) * 1997-12-17 2000-11-21 Robert Bosch Gmbh Mounting device for mounting fuel injection valves
US5970953A (en) * 1999-01-12 1999-10-26 Siemens Automotive Corporation High pressure injector clip
DE19937444C1 (de) * 1999-08-07 2001-01-18 Winkelmann & Pannhoff Gmbh Vorrichtung zur Verteilung von Kraftstoff für Kraftstoffeinspritzanlagen von Verbrennungsmotoren
US6276339B1 (en) * 2000-05-02 2001-08-21 Delphi Technologies, Inc. Fuel injector spring clip assembly

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101032261B1 (ko) 2002-12-04 2011-05-06 로베르트 보쉬 게엠베하 지지 소자
US7540273B2 (en) 2002-12-04 2009-06-02 Robert Bosch Gmbh Supporting element
WO2004051074A1 (fr) * 2002-12-04 2004-06-17 Robert Bosch Gmbh Element d'appui
EP1544455A3 (fr) * 2003-12-16 2006-03-15 Robert Bosch Gmbh Injecteur à combustible
US7560835B2 (en) 2004-11-16 2009-07-14 Bosch Rexroth Ag Electrical induction machine and primary part
EP1892408A1 (fr) * 2006-08-21 2008-02-27 Siemens Aktiengesellschaft Injecteur, gobelet pour l'alimentation en carburant et support
US8398328B2 (en) 2008-01-07 2013-03-19 Continental Automotive Gmbh Coupling arrangement and connection assembly
EP2077390A1 (fr) * 2008-01-07 2009-07-08 Continental Automotive GmbH Agencement de couplage et ensemble de connexion
WO2009144069A1 (fr) * 2008-05-30 2009-12-03 Robert Bosch Gmbh Élément de retenue pour dispositif d'injection de carburant
JP2011522147A (ja) * 2008-05-30 2011-07-28 ローベルト ボツシユ ゲゼルシヤフト ミツト ベシユレンクテル ハフツング 燃料噴射装置用の固定具
US8707930B2 (en) 2008-05-30 2014-04-29 Robert Bosch Gmbh Hold-down device for a fuel injection device
CN103291517A (zh) * 2012-02-27 2013-09-11 株式会社京浜 燃料喷射阀的支承结构
CN103291517B (zh) * 2012-02-27 2015-09-09 株式会社京浜 燃料喷射阀的支承结构
US9212641B2 (en) 2012-02-27 2015-12-15 Keihin Corporation Fuel injection valve supporting structure
CN104564470A (zh) * 2013-10-10 2015-04-29 大陆汽车有限公司 用于燃烧发动机的流体喷射组件

Also Published As

Publication number Publication date
DE10163030A1 (de) 2003-07-03
DE10163030B4 (de) 2014-10-09

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