EP1570171A1 - Element d'appui - Google Patents

Element d'appui

Info

Publication number
EP1570171A1
EP1570171A1 EP03750336A EP03750336A EP1570171A1 EP 1570171 A1 EP1570171 A1 EP 1570171A1 EP 03750336 A EP03750336 A EP 03750336A EP 03750336 A EP03750336 A EP 03750336A EP 1570171 A1 EP1570171 A1 EP 1570171A1
Authority
EP
European Patent Office
Prior art keywords
support element
element according
fuel
injection valve
fuel injection
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
EP03750336A
Other languages
German (de)
English (en)
Other versions
EP1570171B1 (fr
Inventor
Martin Scheffel
Werner Berger
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 EP1570171A1 publication Critical patent/EP1570171A1/fr
Application granted granted Critical
Publication of EP1570171B1 publication Critical patent/EP1570171B1/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
    • F02M61/16—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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • 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
    • F02M2200/803—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 is based on a support element for spacing a fuel distributor line from a fuel injection valve used 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 together 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 support element according to the invention for a fuel injector with the characterizing features of the main claim has the advantage over the fact that the fuel distributor line is free of radial force on the fuel injection valve via the support element according to the invention. supports and thus tension and subsequent damage to the fuel injector and the connection of the fuel distribution line are eliminated.
  • the support element ensures both a transfer of the hold-down force of the fuel rail to the fuel injector and a flexible fixation to compensate for tolerances and offsets.
  • the support element can be produced in a simple manner by stamping from sheet metal.
  • Punched-out recesses advantageously ensure a secure fixation of the support element on the fuel injection valve and simple support of the fuel distributor line while being easy to manufacture.
  • Different lug shapes can advantageously be designed in such a way that a more or less strong elastic and plastic deformation enables a support between the fuel distributor line and the fuel injection valve that is optimized depending on the installation situation.
  • FIG. 1A shows a schematic, partially sectioned view of an exemplary embodiment of a support element designed according to the invention combinable fuel injector before assembly;
  • FIG. 1B is a schematic, partially sectioned view of the embodiment shown in FIG. 1A in the assembled state
  • FIG. IC shows a plan view of the exemplary embodiment of a support element designed according to the invention shown in FIGS. 1A and 1B;
  • 2A-D show four preferred embodiments for support elements designed without radial force
  • 3A-C a fifth preferred embodiment of a radial force-free support element in three different views
  • 5A-C a seventh preferred embodiment of a radial force-free support element in three different views.
  • FIG. 1A to IC show schematic partial sections through an exemplary embodiment of a fuel injection valve 1, a fuel distributor line 2 and a support element 3, designed according to the invention, to be fitted between them before and after the assembly of the components mentioned.
  • a fuel injection valve 1 is designed in the form of a direct injection fuel injection valve 1, which is used for the direct injection of fuel into a combustion chamber of a non-illustrated, in particular mixture-compressing, spark-ignited internal combustion engine in a valve receptacle Cylinder head can be used.
  • the valve receptacle can also be provided on a receptacle of an intake pipe, not shown.
  • the fuel injection valve 1 has a plug-in connection at an inlet-soap end 4 to a receiving connector of a fuel distributor line 2, which is sealed by a seal 5 between the fuel distributor line 2 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.
  • the support element 3 is provided according to the invention.
  • the support element 3 consists of a bracket 8, which is supported on the one hand on a shoulder 9 of the fuel injector 1 and on the other hand on a shoulder 10 of the fuel distributor line 2.
  • the clamp 8 is slotted in the area of the electrical connection 7 of the fuel injection valve 1 in order to facilitate assembly.
  • Fig. IC it can be seen that the first embodiment of a support element 3 designed according to the invention has a round cross section. Alternative shapes are shown in Figs. 3C and 4.
  • Bracket 8 Two tabs 11 are connected to the bracket 8 and provide a resilient tension of the fuel rail 2 against the fuel injector 1.
  • a detailed representation of the bracket 8 is the views in FIGS. 3A to 3C, 4 and 5A to 5C and the following description refer to.
  • FIGS. 1A and 1B show schematic, partially sectioned sections of the fuel injection system shown in FIGS. 1A and 1B in the region of the connecting piece 6 the fuel injector 1 and the fuel rail 2.
  • 2A to 2D represent various possibilities for supporting the radial forces between the support element 3 and the fuel injection valve 1 for round support elements 3.
  • a first, simplest embodiment is shown, in which the support element 3 is guided by a guide element 12, which can be, for example, the cylinder head, so that a radial evasion of the support element 3 by the fuel rail
  • the support element 3 is provided with an at least partially circumferential groove 13 which, together with a projection 14 formed on the shoulder 9 of the fuel injection valve 1, also ensures that the tabs 11 of the support element are engaged
  • a bevel on the shoulder 9 of the fuel injection valve 1 and / or the tabs 11 of the support element 3 is also suitable for supporting the shoulder 9 of the fuel injection valve 1 without radial force.
  • FIG. 2C only the shoulder 9 is inclined at an angle ⁇ , while in FIG. 2D both the shoulder 9 of the fuel injection valve 1 and the tabs 11 of the support element 3 are inclined at an angle ⁇ which is preferably of the same size. This measure can also prevent the tabs 11 from migrating under axial force.
  • the embodiment variant shown in FIG. 2C has the advantage of being easy to manufacture, the support element 3 being able to be adopted unchanged.
  • FIGS. 1 and 2 Embodiment of a support element 3 designed according to the invention in the unassembled state.
  • the same components are provided with the same reference numerals in all figures.
  • FIG. 3A shows a side view of the support element 3 designed according to the invention
  • FIG. 3B shows a front view
  • FIG. 3C shows a top view
  • FIG. 4 shows a top view of a further embodiment variant to be seen as an alternative to FIG. 3C.
  • Fig. 3A shows the support element 3 designed according to the invention with the bracket 8 and the tabs 11.
  • the tabs 11 are designed due to their shape and their approach to the bracket 8 so that they can be plastically and elastically deformed under axial load and thereby an axial force Introduce into fuel injector 1.
  • FIG. 1B the brackets 11 rest on the shoulder 9 of the fuel injector 1.
  • 3B shows a view of the slotted side of the support element 3. In the area of the slit 15, when the support element 3 is in the assembled state, the electrical connection 7 of the fuel injection valve 1 is located.
  • 3C and 4 show, in the same view in the outflow direction, two possible design variants for the support element 3.
  • the support element 3 In order to prevent the support element 3 from migrating radially through the axial introduction of force through the fuel distributor line 2 and thereby causing tension in the fuel injection valve 1 in the cylinder head or bending of
  • the support element 3 is not round on the one hand, but is designed in a roughly rectangular or square cross-sectional shape, with additional edges 16, which form the closure of the clamp 8 on both sides of the slot 15, towards that Fuel injector 1 are turned radially inward. It is thereby achieved that the edges 16 rest over their entire axial length on the fuel injection valve 1 and thereby prevent the support element 3 from slipping.
  • the embodiment variant shown in FIG. 4 has the advantage of being easy to manufacture with a high clamping effect, while the exemplary embodiment shown in FIG. 3C effectively prevents the edges from bending open.
  • FIG. 5A to 5C show a further exemplary embodiment of a support element 3 designed according to the invention.
  • This has annular tabs 11 which are connected to the bracket 8.
  • a recess 17 in the annular tabs 11 ensures a higher elasticity of the tabs 11 and thus a greater tolerance to axial tension.
  • the edges 16 can be configured as in FIG. 3C or 4.
  • the invention is not limited to the exemplary embodiments 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)
  • Manufacturing & Machinery (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

L'invention concerne un élément d'appui servant à soutenir, de façon alternée, une soupape d'injection de carburant (1) dans un logement de soupape d'une culasse d'un moteur à combustion interne et de la soupape d'injection de carburant (1) sur une conduite de distributeur de carburant (2). L'élément d'appui présenté est formé de sorte que les forces agissant sur la soupape d'injection de carburant (1) ne s'exercent que dans le sens axial et ne présentent aucune composante radiale.
EP03750336A 2002-12-04 2003-09-10 Element d'appui Expired - Lifetime EP1570171B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10256668A DE10256668A1 (de) 2002-12-04 2002-12-04 Stützelement
DE10256668 2002-12-04
PCT/DE2003/003008 WO2004051074A1 (fr) 2002-12-04 2003-09-10 Element d'appui

Publications (2)

Publication Number Publication Date
EP1570171A1 true EP1570171A1 (fr) 2005-09-07
EP1570171B1 EP1570171B1 (fr) 2008-04-02

Family

ID=32403703

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03750336A Expired - Lifetime EP1570171B1 (fr) 2002-12-04 2003-09-10 Element d'appui

Country Status (6)

Country Link
US (1) US7540273B2 (fr)
EP (1) EP1570171B1 (fr)
JP (1) JP4291273B2 (fr)
KR (1) KR101032261B1 (fr)
DE (2) DE10256668A1 (fr)
WO (1) WO2004051074A1 (fr)

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DE10358912A1 (de) * 2003-12-16 2005-09-08 Robert Bosch Gmbh Brennstoffeinspritzsystem
US7373926B2 (en) * 2004-02-26 2008-05-20 Robert Bosch Gmbh Support element
DE102004015042A1 (de) * 2004-03-26 2005-10-13 Robert Bosch Gmbh Stützelement
JP4634765B2 (ja) * 2004-09-16 2011-02-16 日産自動車株式会社 燃料噴射弁取付構造
US20060232061A1 (en) * 2005-04-15 2006-10-19 Yasushi Fujiwara Clamp device
JPWO2007069447A1 (ja) * 2005-12-14 2009-05-21 ヤマハ発動機株式会社 エンジンおよび車両
DE102006018194B4 (de) * 2006-04-19 2010-06-10 Winkelmann Powertrain Components Gmbh & Co. Kg Vorrichtung zur Befestigung eines Einspritzventils in einer Ventilaufnahme einer Brennkraftmaschine
DE102010017725B4 (de) 2010-07-05 2018-05-30 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Einspritzanordnung für eine Brennkraftmaschine eines Kraftfahrzeugs
DE112012004986T5 (de) * 2011-11-29 2014-08-28 Piolax Inc. Anbringungsvorrichtung
US8701632B2 (en) * 2012-07-24 2014-04-22 Ford Global Technologies, Llc Fuel injector mount
JP6074793B2 (ja) * 2012-11-05 2017-02-08 株式会社ケーヒン 燃料噴射弁の支持構造
DE102013200728A1 (de) * 2013-01-18 2014-07-24 Robert Bosch Gmbh Brennstoffeinspritzanlage mit einer Brennstoff führenden Komponente, einem Brennstoffeinspritzventil und einem Verbindungselement
JP6119446B2 (ja) * 2013-06-18 2017-04-26 スズキ株式会社 デリバリパイプ

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Also Published As

Publication number Publication date
KR20050085342A (ko) 2005-08-29
DE50309555D1 (de) 2008-05-15
WO2004051074A1 (fr) 2004-06-17
KR101032261B1 (ko) 2011-05-06
EP1570171B1 (fr) 2008-04-02
JP2006509143A (ja) 2006-03-16
US7540273B2 (en) 2009-06-02
JP4291273B2 (ja) 2009-07-08
US20060266892A1 (en) 2006-11-30
DE10256668A1 (de) 2004-07-29

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