EP1366285B1 - Dispositif de fixation - Google Patents

Dispositif de fixation Download PDF

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Publication number
EP1366285B1
EP1366285B1 EP02719641A EP02719641A EP1366285B1 EP 1366285 B1 EP1366285 B1 EP 1366285B1 EP 02719641 A EP02719641 A EP 02719641A EP 02719641 A EP02719641 A EP 02719641A EP 1366285 B1 EP1366285 B1 EP 1366285B1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
injection valve
holding
cylinder head
fastening device
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
EP02719641A
Other languages
German (de)
English (en)
Other versions
EP1366285A1 (fr
Inventor
Uwe Liskow
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
Priority to EP06117773A priority Critical patent/EP1722099B1/fr
Publication of EP1366285A1 publication Critical patent/EP1366285A1/fr
Application granted granted Critical
Publication of EP1366285B1 publication Critical patent/EP1366285B1/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
    • 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

Definitions

  • the invention relates to a fuel injection valve with a fastening device for fastening the fuel injection valve according to the preamble of the main claim.
  • DE 29 26 490 C2 discloses a fastening device for a fuel injection valve for attachment to a suction pipe, in which the axial fixation of the fuel injection valve to the fuel rail or to a plug-in nipple by a fastener, which is designed as a U-shaped securing clip which is provided with two radially resilient legs.
  • the securing clip engages in the assembled state by corresponding recesses of the plug-in nipple and can be latched in a recess formed as an annular groove in a connecting piece of the fuel injection valve.
  • the axial clearance between the recesses and the securing clip as well as between the annular groove and the securing clip should be kept small in order to achieve an exact fixation of the fuel injection valve without tension of 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 power flow generated in the fuel injection valve leads to deformations and thus changes in the stroke of the valve needle to jamming and to a pressure or bending load of the housing parts, which are generally thin-walled and welded together at several points.
  • each fastening measure leads, for example by a support collar to increase the radial extent of the fuel injection valve and thus to an increased space requirement during installation.
  • a fastening device for fastening a fuel injection valve in a cylinder head of an internal combustion engine which comprises at least one hold-down, which is fixed to an end face of the cylinder head and the fuel injection valve fixed in a receiving bore of the cylinder head.
  • the hold-down device designed in the form of a clamping claw is supported by a bearing section on a flange formed on a downstream end of the fuel injection valve, wherein the fuel injection valve is at least partially enclosed by a fork-like configuration of the hold-down device.
  • the hold-down is shaped so that it is biased in the assembled state in some way.
  • the annular projecting beyond the outer contour of the fuel injection valve flange is flat with a flat support surface, which engages the support portion of the blank holder.
  • the fuel injection valve according to the invention with a fastening device for the fuel injection valve having the characterizing features of the main claim has the advantage that the fuel injection valve at a discharge end has a collar or paragraph attached thereto, on which a flexible hold-down engages which the end of the fuel injection valve in whole or in part includes, whereby the fuel injection valve is held down in the cylinder head.
  • a flexible hold-down engages which the end of the fuel injection valve in whole or in part includes, whereby the fuel injection valve is held down in the cylinder head.
  • axial or bending forces act on the valve housing only at the downstream end.
  • the paragraph is provided in an advantageous manner in the transition to a spherical shape at the downstream end of the fuel injection valve.
  • hold-downs can be produced simply by stamping from sheet metal and are suitable both for individual fuel injection valves and for row arrangements of fuel injection valves.
  • the hold-downs are fixed by screws or clamps in a simple manner on the front side of the cylinder head.
  • a further advantage is that the hold-down is formed in the form of a hold-down pot, which gives the fuel injection valve in the receiving bore of the cylinder head greater stability.
  • Another advantage is the formation of slits and elastic tabs at the end of the hold-down pot, which allow a quick and easy assembly and disassembly of the fuel injector.
  • the fastening device can be installed in almost any receiving bore of a cylinder head and can thus also be used as an adapter for large bore cross-sections.
  • Fig. 1 shows a highly schematic partial section through a first embodiment of an inventively designed fastening device for a fuel injection valve.
  • a fuel injection valve 1 is designed in the form of a directly injecting fuel injection valve 1, which is installed in a cylinder head 2 for the direct injection of fuel into a combustion chamber of a non-illustrated, in particular mixture-compressing spark-ignition internal combustion engine.
  • the fuel injection valve 1 has a connection to a fuel feed line 4 at an inlet end 3.
  • the fuel injection valve 1 has a connection 5 for the electrical contacting for actuating the fuel injection valve 1.
  • a shoulder 7 is formed, which bears against a wall 8 of a receiving bore 9 of the cylinder head 2.
  • the paragraph 7 can be made for example by turning, or it can be fixed by welding a spherical shape at the downstream end 6 of the fuel injection valve 1, which also still a good guide in the receiving bore 9 is achieved.
  • a fastening device 10 is provided according to the invention.
  • the fastening device 10 consists of a hold-down 11, which in the present first embodiment is formed in two parts and abuts the downstream end 6 of the fuel injection valve 1.
  • the hold-down device 11 are punched from sheet metal, for example.
  • the hold-down devices 11 are supported on the shoulder 7 formed at the downstream end 6 of the fuel injection valve 1.
  • the holding-down devices 11 are provided with side parts 16 on an end face 12 of the cylinder head 2 either, as shown on the left in FIG. 1, by means of a screw 13 screwed into the cylinder head 2 or, as shown in FIG. 1 on the right, by means of a likewise on the front side 12 of the cylinder head 2 attached clamping claw 14 attached.
  • the latter is characterized by an easier mountability, as can be dispensed with a hole in the hold-11.
  • hold-down 11 is chosen so that by the fixing of the side parts 16 on the end face 12 of the cylinder head 2, a spring action is created, which presses the fuel injector 1 via the shoulder 7 in the receiving bore 9 in the cylinder head 2.
  • the axial stability of the fuel injection valve 1 is achieved on the one hand by the leadership of the fuel line 4, on the other hand by the partial enclosure of the hold-11 in the region of the downstream end 6 of the fuel injection valve 1.
  • FIGS. 2A and 2B illustrate a schematic plan view of two variants of the fastening device 10 of the fuel injection valve 1 according to the invention. Identical components are provided in all figures with corresponding reference numerals.
  • Fig. 2A illustrates a symmetrical pair of hold-downs 11, which serve to secure a single fuel injector 1, while Fig. 2B of a possible series arrangement of several fuel injectors 1 account, by each adjacent hold-down 11 are made in one piece for ease of attachment and further stabilization ,
  • FIG. 3 shows a schematic plan view of a second exemplary embodiment of a fastening device 10 designed according to the invention for a fuel injection valve 1.
  • the second exemplary embodiment described in FIG. 3 is formed in one piece or in cup shape.
  • a hold-down pot 17 in turn has two side parts 16 with holes 15 for fastening the hold-down pot 17 on the end face 12 of the cylinder head 2.
  • a recess 18 serves to carry out the electrical line, not shown, for actuating the fuel injection valve 1.
  • Such a hold-down pot 17 can be produced, for example, by deep-drawing.
  • At least one slit 19, in the present embodiment of which two are arranged symmetrically at a downstream end 22 of the hold-down pot 17 is provided.
  • Fig. 5 shows a schematic view of the attachment process of a fuel injection valve 1 in the fastening device 10 shown in FIGS. 3 and 4.
  • the fuel injection valve 1 If the fuel injection valve 1 is pressed further against the spring force of the tabs 21 in the hold-down pot 17, they grab the inlet side of the paragraph 7 back to their original shape and are applied to the fuel injector 1. At the same time can be achieved by a brief tightening of the assembled fuel injector 1, that the tabs 21 are supported on the shoulder 7 and fix the fuel injector 1 after mounting fuel injector 1 and hold-down pot 17 in the receiving bore 9 of the cylinder head 2. If the fuel injection valve 1 to be dismantled, it is pulled out of the hold-down pot 17, which is facilitated by a spherical shape of the paragraph 7.
  • the attachment of the hold-down pot 17 can be done as in the first embodiment by means of screws 13 which are guided through the holes 15, or by means of clamping claws 14.
  • the invention is not limited to the illustrated embodiment and, for example, for fuel injection valves 1 for injection into the 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)
  • Fuel-Injection Apparatus (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Claims (9)

  1. Injecteur de carburant (1) ayant un dispositif de fixation pour le fixer dans une culasse (2) d'un moteur à combustion interne, avec au moins un serre-flan (11) sur une face frontale (12) de la culasse (2) qui fixe l'injecteur de carburant (1) dans un perçage de réception (9) de la culasse (2), l'un au moins des serre-flans (11) s'appuyant sur un palier (7) conçu sur une extrémité côté écoulement (6) de l'injecteur de carburant (1) et comprenant au moins partiellement l'injecteur de carburant (1), le serre-flan (11) étant formé de manière à être précontraint à l'état monté,
    caractérisé en ce que
    le palier (7) prévu, dans le passage, sur l'injecteur de carburant (1) a une forme sphérique sur l'extrémité côté écoulement (6).
  2. Injecteur de carburant ayant un dispositif de fixation selon la revendication 1,
    caractérisé en ce que
    l'au moins un serre-flan (11) présente une partie latérale (16) qui fait saillie sur la face frontale (12) de la culasse (2).
  3. Injecteur de carburant ayant un dispositif de fixation selon la revendication 2,
    caractérisé en ce que
    la partie latérale (16) de l'au moins un serre-flan (11) est fixée sur la face frontale (12) de la culasse (2) à l'aide d'au moins une vis (13) qui traverse au moins un perçage (15) dans la partie latérale (16).
  4. Injecteur de carburant ayant un dispositif de fixation selon la revendication 2,
    caractérisé en ce que
    la partie latérale (16) de l'au moins un serre-flan (11) est fixée sur la face frontale (12) de la culasse (2) à l'aide d'au moins une patte de serrage (14) qui appuie la partie latérale (16) sur la face frontale (12) de la culasse (2).
  5. Injecteur de carburant ayant un dispositif de fixation selon l'une quelconque des revendications 1 à 4,
    caractérisé par
    deux serre-flans voisins (11) conçus d'une seule pièce pour fixer des injecteurs de carburant (1) disposés en ligne.
  6. Injecteur de carburant ayant un dispositif de fixation selon la revendication 1,
    caractérisé par
    un serre-flan (11) en forme d'un pot serre-flan (17) réalisé d'une seule pièce.
  7. Injecteur de carburant ayant un dispositif de fixation selon la revendication 6,
    caractérisé en ce que
    le pot serre-flan (17) présente au moins une fente (19) sur une extrémité côté écoulement (22).
  8. Injecteur de carburant ayant un dispositif de fixation selon la revendication 7,
    caractérisé en ce que
    le pot serre-flan (17) présente au moins une patte (21) à déformation élastique sur son extrémité côté écoulement (22).
  9. Injecteur de carburant ayant un dispositif de fixation selon l'une quelconque des revendications 6 à 8,
    caractérisé en ce que
    les parties latérales (16) du pot serre-flan (17) sont fixées chacune par au moins une vis (13) qui fait saillie par un perçage (15) ou par au moins une patte de serrage (14) sur la face frontale (12) de la culasse (2).
EP02719641A 2001-02-28 2002-02-27 Dispositif de fixation Expired - Lifetime EP1366285B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP06117773A EP1722099B1 (fr) 2001-02-28 2002-02-27 Dispositif de fixation

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10109408 2001-02-28
DE10109408A DE10109408A1 (de) 2001-02-28 2001-02-28 Befestigungsvorrichtung
PCT/DE2002/000696 WO2002068815A1 (fr) 2001-02-28 2002-02-27 Dispositif de fixation

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP06117773A Division EP1722099B1 (fr) 2001-02-28 2002-02-27 Dispositif de fixation

Publications (2)

Publication Number Publication Date
EP1366285A1 EP1366285A1 (fr) 2003-12-03
EP1366285B1 true EP1366285B1 (fr) 2006-11-02

Family

ID=7675651

Family Applications (2)

Application Number Title Priority Date Filing Date
EP02719641A Expired - Lifetime EP1366285B1 (fr) 2001-02-28 2002-02-27 Dispositif de fixation
EP06117773A Expired - Lifetime EP1722099B1 (fr) 2001-02-28 2002-02-27 Dispositif de fixation

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP06117773A Expired - Lifetime EP1722099B1 (fr) 2001-02-28 2002-02-27 Dispositif de fixation

Country Status (7)

Country Link
US (1) US6772736B2 (fr)
EP (2) EP1366285B1 (fr)
JP (1) JP2004518863A (fr)
CN (1) CN1457393A (fr)
CZ (1) CZ20023489A3 (fr)
DE (3) DE10109408A1 (fr)
WO (1) WO2002068815A1 (fr)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10140797A1 (de) * 2001-08-20 2003-07-31 Bosch Gmbh Robert Ausgleichselement für ein Brennstoffeinspritzventil
JP3997946B2 (ja) * 2002-07-26 2007-10-24 株式会社デンソー 燃料供給装置
DE10256668A1 (de) * 2002-12-04 2004-07-29 Robert Bosch Gmbh Stützelement
DE10338715B4 (de) * 2003-08-22 2014-07-17 Robert Bosch Gmbh Ausgleichselement für ein Brennstoffeinspritzventil
DE102004055317A1 (de) 2004-11-16 2006-05-24 Bosch Rexroth Aktiengesellschaft Elektrische Drehfeldmaschine und Primärteil
WO2006092427A1 (fr) * 2005-03-03 2006-09-08 Robert Bosch Gmbh Dispositif d'injection de carburant
US7469680B2 (en) * 2005-09-30 2008-12-30 Caterpillar Inc. Fluid system having quill-mounted manifold
DE102006019306A1 (de) * 2006-04-26 2007-10-31 Robert Bosch Gmbh Rastpratze
DE102006056704A1 (de) * 2006-11-30 2008-06-05 Robert Bosch Gmbh Brennstoffeinspritzventil und Brennstoffeinspritzsystem
DE602007002783D1 (de) * 2007-03-08 2009-11-26 Continental Automotive Gmbh Kupplungsvorrichtung und Kraftstoffzufuhranordnung
EP2199592B1 (fr) * 2007-05-31 2011-10-12 Continental Automotive GmbH Dispositif de fixation pour fixer un injecteur de combustible dans une culasse d'un moteur à combustion
DE102007035714A1 (de) * 2007-07-30 2009-02-05 Robert Bosch Gmbh Brennstoff-Einspritzanlage mit Ausgleichselement
JP4937891B2 (ja) * 2007-11-30 2012-05-23 愛三工業株式会社 燃料供給装置
JP5408010B2 (ja) * 2010-04-08 2014-02-05 株式会社デンソー 高圧ポンプ
US20110265767A1 (en) * 2010-05-03 2011-11-03 Delphi Technologies, Inc. Isolater for fuel injector
US20130174810A1 (en) * 2010-10-20 2013-07-11 Illinois Tool Works Inc. Fuel injector bracket assembly
US9109563B2 (en) * 2011-03-31 2015-08-18 Denso International America, Inc. Cradled fuel injector mount assembly
DE102011084064A1 (de) * 2011-10-06 2013-04-11 Schaeffler Technologies AG & Co. KG Niederhalter für eine Kraftstoffeinspritzdüse
US8424509B1 (en) * 2011-10-28 2013-04-23 Continental Automotive Systems Us, Inc. Fuel injector cup rotation limiting structure for an isolated fuel rail system
CN103527375B (zh) * 2013-09-22 2016-03-09 安徽中鼎动力有限公司 一种两冲程发动机的喷油器压套装置
JP6256918B2 (ja) * 2014-09-30 2018-01-10 本田技研工業株式会社 インジェクタ組付体
DE102015001614A1 (de) * 2015-02-07 2016-08-11 Neander Motors Ag Einrichtung zur Festsetzung zumindest einer Kraftstoffeinspritzdüse
DE102016225695A1 (de) * 2016-12-21 2018-06-21 Robert Bosch Gmbh Anordnung mit zumindest einem Ventil und einem Halter
CN111433450B (zh) * 2017-12-08 2022-01-28 沃尔沃卡车集团 用于共轨燃料喷射系统的装置

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FR2763649B1 (fr) 1997-05-20 1999-06-25 Peugeot Dispositif de fixation d'un injecteur de carburant sur une culasse de moteur a combustion interne, et un procede de montage de cet injecteur
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Also Published As

Publication number Publication date
CN1457393A (zh) 2003-11-19
US6772736B2 (en) 2004-08-10
CZ20023489A3 (en) 2004-05-12
EP1722099B1 (fr) 2009-02-18
WO2002068815A1 (fr) 2002-09-06
US20030154961A1 (en) 2003-08-21
DE50208596D1 (de) 2006-12-14
JP2004518863A (ja) 2004-06-24
DE10109408A1 (de) 2002-09-05
EP1366285A1 (fr) 2003-12-03
EP1722099A2 (fr) 2006-11-15
DE50213305D1 (de) 2009-04-02
EP1722099A3 (fr) 2006-11-29

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