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WO2003006818A1 - Dispositif de fixation d'une soupape d'injection de carburant a une conduite de distribution de carburant - Google Patents

Dispositif de fixation d'une soupape d'injection de carburant a une conduite de distribution de carburant Download PDF

Info

Publication number
WO2003006818A1
WO2003006818A1 PCT/DE2002/001933 DE0201933W WO03006818A1 WO 2003006818 A1 WO2003006818 A1 WO 2003006818A1 DE 0201933 W DE0201933 W DE 0201933W WO 03006818 A1 WO03006818 A1 WO 03006818A1
Authority
WO
WIPO (PCT)
Prior art keywords
fastening device
spring clip
injection valve
fuel
fuel injection
Prior art date
Application number
PCT/DE2002/001933
Other languages
German (de)
English (en)
Inventor
Ferdinand Reiter
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 WO2003006818A1 publication Critical patent/WO2003006818A1/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
    • 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
    • F02M2200/16—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
    • F02M2200/803—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
    • F02M2200/853—Mounting of fuel injection apparatus involving use of quick-acting mechanism, 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
    • F02M2200/85—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 relates to a fastening device for fastening a fuel injection valve m a cylinder head of an internal combustion engine and for connecting the fuel injection valve to a fuel supply line according to the preamble of the main claim.
  • DE 29 26 490 C2 already discloses a fastening device for a fuel valve for fastening to an intake manifold, in which the fuel injection valve is axially fixed to the fuel distributor line or to a plug nipple by means of a fastening element which is designed as a U-shaped securing clip , which is provided with two legs resilient in the radial direction.
  • the securing clip engages in the assembled state through corresponding cutouts in the plug-in nipple and can be latched into a recess formed as an annular slot with a connecting piece of the fuel injection valve.
  • the axial play between the cutouts and the securing clip and between the annular groove and the securing clip should be kept small in order to an exact fixation of the To reach the fuel injection valve without tensioning the seal.
  • 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 injection valve.
  • the force flow generated in the fuel injection valve 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 due to a support collar and thus to an increased space requirement during installation.
  • Leaf springs is held together and consequently there is no need to fasten the fuel injection valve to the cylinder head.
  • the fastening device ensures both a transfer of the elastic leaf springs
  • both the fastening device and the elastic leaf springs can be produced in a simple manner by stamping from sheet metal. It can also be manufactured by deep-drawing and punching.
  • screws or clamping claws for fastening to the end face of the cylinder head are advantageously omitted.
  • the spring clip has insertion bevels in two directions, which enables simple mounting both on the fuel distributor line and on the fuel injector.
  • Punched-out recesses and undercuts advantageously ensure a secure fixation of the fastening device on, while being easy to manufacture
  • Fig. 1 is a schematic, partially sectioned view of an embodiment of an inventive fastening device for a fuel injection valve on a fuel rail, and
  • FIG. 2A-C are schematic partial sections and views of the exemplary embodiment of a fastening device according to the invention shown in FIG. 1 along different sectional planes.
  • Fig. 1 shows a schematic partial section through an embodiment of an embodiment according to the invention Fastening device for a fuel injector on a fuel rail.
  • a fuel injection valve 1 is designed in the form of a direct injection fuel injection valve 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 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.
  • the fuel injection valve 1 has an electrical connection 7 for the electrical contact for actuating the fuel injection valve 1.
  • the fastening device 10 consists of a spring clip 11, which is supported on the one hand on a shoulder 12 of the fuel distributor line 4 and on the other hand on a shoulder 13 of the fuel injection valve 1.
  • the spring clip 11 is preferably punched out of spring steel sheet. Also by punching, two leaf springs 14 are produced, which are in connection with the spring clip 11 and ensure resilient tensioning of the spring clip 11 between the two shoulders 12 and 13.
  • a detailed illustration of the spring clip 11 can be found in the sectional views in FIGS. 2A to 2C and the description below.
  • the spring clip 11 is slotted, which ensures easier mounting of the fastening device 10. Due to the spring clip 11 made of spring steel sheet the slotted shape has no effect on the reliability of the fastener 10.
  • the spring clip 11 can preferably have insertion bevels 15 which are formed by a bevel on a radially inner side of the spring clip 11. This facilitates both the pushing of the spring clip 11 onto the fuel injection valve 1 and the pushing in of the receptacle of the fuel distributor line 4, the spring clip 11
  • FIGS. 2A to 2C illustrate schematic partial sections and views of the exemplary embodiment of a fastening device 10 designed according to the invention along various sectional planes, when the fastening device 10 is not assembled.
  • the same components are provided with the same reference numerals in all the figures.
  • FIG. 2A shows a partial longitudinal section through the fastening device 10 designed according to the invention.
  • the spring clip 11 is cut in the longitudinal direction, the uncut, rear part of the spring clip 11 is shown in side view
  • the spring clip 11 has insertion bevels 15 in a slide-on direction of the spring clip 11 on the fuel injection valve 1 and in an insertion direction of the fuel distributor line 4 m, the spring clip 11. This ensures simple and tension-free mounting of the fastening device 10 in all assembly steps
  • the leaf spring 14 is arranged on a recess 16 punched out of the spring clip 11, which in the assembled state of the spring clip 11 extends from the shoulder 12 of the Fuel distributor line 4 is penetrated so that the shoulder 12 is supported on the leaf spring 14.
  • protrusions 17 which are still attached to an m flow direction at the bottom of the spring clip 11 are somewhat shortened and then bent inwards so that the leaf spring 14 is supported thereon.
  • FIG. 2B shows a longitudinal section through the fastening device 10 according to the invention, the section plane being rotated by 90 ° in comparison to FIG. 2A.
  • Fig. 2B the leaf springs 14, which are arranged on both sides of the fuel injection valve 1 and ensure its flexible fixing, can be seen in section.
  • the leaf springs 14 are clamped in the assembled state, as shown in FIG. 1, between the shoulder 12 of the fuel rail 4 and the projections 17, whereby they are pressed together. This results in a secure fastening and, at the same time, a tolerance-compensating bracing between the fuel distributor line 4 and the fuel injection valve 1.
  • the shoulder 12 of the fuel distributor line 4 extends through the recesses 16 and, in addition to providing a connection between the fastening device 10 and the fuel distributor line 4, also ensures that the fastening device 10 is secured against rotation.
  • the undercuts 18, behind which the shoulder 13 of the fuel injection valve 1 is braced, are m 2B clearly recognizable.
  • Fig. 2C shows a plan view of the fastening device 10 according to the invention with a view towards
  • Fuel fuel valve l In the supervision, in particular the import bevels 15 executed in two directions and the two leaf springs 14 can be seen. The latter rest on the projections 17 which, as already mentioned, have been bent inwards after the punching.
  • the resilient shape of the spring clip 11 and the leaf springs 14 can ensure that the spring clip 11 abuts both on the fuel injection valve 1 and on the fuel distributor line 4 and thereby exerts a centering effect. As a result, bending forces on the fuel injection valve 1, which can lead to displacements of the valve needle up to hm to 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.
  • 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

La présente invention concerne un dispositif de fixation destiné à la fixation réciproque d'une soupape d'injection de carburant (1) dans une tête de cylindre (2) d'un moteur à combustion interne et de la soupape d'injection de carburant (1) à une conduite de distribution de carburant (4), ledit dispositif se présentant sous la forme d'un élément de fixation à ressorts (11). L'élément de fixation à ressorts (11) comprend des ressorts à lames (14) qui sont enserrés de manière élastique entre un épaulement (12) de la conduite de distribution de carburant (4) et l'élément de fixation à ressorts (11).
PCT/DE2002/001933 2001-07-09 2002-05-25 Dispositif de fixation d'une soupape d'injection de carburant a une conduite de distribution de carburant WO2003006818A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10133264A DE10133264A1 (de) 2001-07-09 2001-07-09 Befestigungsvorrichtung
DE10133264.5 2001-07-09

Publications (1)

Publication Number Publication Date
WO2003006818A1 true WO2003006818A1 (fr) 2003-01-23

Family

ID=7691146

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2002/001933 WO2003006818A1 (fr) 2001-07-09 2002-05-25 Dispositif de fixation d'une soupape d'injection de carburant a une conduite de distribution de carburant

Country Status (2)

Country Link
DE (1) DE10133264A1 (fr)
WO (1) WO2003006818A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1721074A1 (fr) * 2004-02-26 2006-11-15 Robert Bosch Gmbh Element de maintien
EP1818535A1 (fr) * 2006-02-08 2007-08-15 Siemens Aktiengesellschaft Dispositif de raccordement pour raccorder un injecteur à un alimentation de fluide
CN104246205A (zh) * 2012-04-26 2014-12-24 罗伯特·博世有限公司 具有燃料分配器和多个燃料喷射阀的布置
EP3628291A1 (fr) 2018-09-26 2020-04-01 The Procter & Gamble Company Procédé de fabrication d'articles absorbants adaptables
EP3628293A1 (fr) 2018-09-26 2020-04-01 The Procter & Gamble Company Article absorbant adaptable
EP3628292A1 (fr) 2018-09-26 2020-04-01 The Procter & Gamble Company Article absorbant adaptable

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005033139A1 (de) 2005-07-15 2007-01-25 Robert Bosch Gmbh Niederhaltevorrichtung
EP1898086B1 (fr) * 2006-09-07 2010-03-17 Continental Automotive GmbH Ensemble de fixation

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3146888A1 (de) * 1981-11-26 1983-06-01 Bayerische Motoren Werke AG, 8000 München Halteklammer
US5146896A (en) * 1991-07-25 1992-09-15 Siemens Automotive L.P. Mounting fuel injection system components on a fuel rail
EP0915253A2 (fr) * 1997-11-04 1999-05-12 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Dispositif d'injection de combustible à haute pression pour moteurs à combustion interne, notamment pour moteurs Otto
US5970953A (en) * 1999-01-12 1999-10-26 Siemens Automotive Corporation High pressure injector clip
WO2002066827A1 (fr) * 2001-02-22 2002-08-29 Robert Bosch Gmbh Dispositif de fixation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3146888A1 (de) * 1981-11-26 1983-06-01 Bayerische Motoren Werke AG, 8000 München Halteklammer
US5146896A (en) * 1991-07-25 1992-09-15 Siemens Automotive L.P. Mounting fuel injection system components on a fuel rail
EP0915253A2 (fr) * 1997-11-04 1999-05-12 Bayerische Motoren Werke Aktiengesellschaft, Patentabteilung AJ-3 Dispositif d'injection de combustible à haute pression pour moteurs à combustion interne, notamment pour moteurs Otto
US5970953A (en) * 1999-01-12 1999-10-26 Siemens Automotive Corporation High pressure injector clip
WO2002066827A1 (fr) * 2001-02-22 2002-08-29 Robert Bosch Gmbh Dispositif de fixation

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1721074A1 (fr) * 2004-02-26 2006-11-15 Robert Bosch Gmbh Element de maintien
EP1818535A1 (fr) * 2006-02-08 2007-08-15 Siemens Aktiengesellschaft Dispositif de raccordement pour raccorder un injecteur à un alimentation de fluide
CN104246205A (zh) * 2012-04-26 2014-12-24 罗伯特·博世有限公司 具有燃料分配器和多个燃料喷射阀的布置
US10184437B2 (en) 2012-04-26 2019-01-22 Robert Bosch Gmbh Arrangement with a fuel distributor and multiple fuel injection valves
EP3628291A1 (fr) 2018-09-26 2020-04-01 The Procter & Gamble Company Procédé de fabrication d'articles absorbants adaptables
EP3628293A1 (fr) 2018-09-26 2020-04-01 The Procter & Gamble Company Article absorbant adaptable
EP3628292A1 (fr) 2018-09-26 2020-04-01 The Procter & Gamble Company Article absorbant adaptable
WO2020068563A1 (fr) 2018-09-26 2020-04-02 The Procter & Gamble Company Articles absorbants adaptables
WO2020068417A1 (fr) 2018-09-26 2020-04-02 The Procter & Gamble Company Procédé de fabrication d'articles absorbants adaptables

Also Published As

Publication number Publication date
DE10133264A1 (de) 2003-02-06

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