EP2286081B1 - Niederhalter für eine brennstoffeinspritzvorrichtung - Google Patents

Niederhalter für eine brennstoffeinspritzvorrichtung Download PDF

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Publication number
EP2286081B1
EP2286081B1 EP09753724A EP09753724A EP2286081B1 EP 2286081 B1 EP2286081 B1 EP 2286081B1 EP 09753724 A EP09753724 A EP 09753724A EP 09753724 A EP09753724 A EP 09753724A EP 2286081 B1 EP2286081 B1 EP 2286081B1
Authority
EP
European Patent Office
Prior art keywords
hold
down member
fuel injection
webs
injection valve
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.)
Active
Application number
EP09753724A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2286081A1 (de
Inventor
Thilo Bolz
Thomas Fuerst
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 EP2286081A1 publication Critical patent/EP2286081A1/de
Application granted granted Critical
Publication of EP2286081B1 publication Critical patent/EP2286081B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and 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
    • F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
    • F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
    • F02M55/025—Common 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
    • 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
    • F02M2200/852—Mounting of fuel injection apparatus provisions for mounting the fuel injection apparatus in a certain orientation, e.g. markings or notches
    • 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 hold-down device for a fuel injection device according to the preamble of claim 1.
  • a fastening device for a fuel injection valve for attachment to a suction tube in which the axial fixation of the fuel injection valve on the fuel distributor line or on a plug-in nipple by a fastener, which is designed as a U-shaped securing clip provided with two resiliently resilient legs is.
  • the securing clip engages in the mounted state by corresponding recesses of the plug-in nipple and can be latched into 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 DE 29 26 490 A1 known fastening device 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 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.
  • the fastening device comprises a sleeve which is clamped between a shoulder of the fuel rail and a shoulder of the fuel injection valve and is formed of an elastic material. Due to its tubular structure, the sleeve can transfer the hold-down forces to the fuel injector only to a limited extent effectively.
  • the claimed by the shoulders of the fuel injection valve and fuel distributor surfaces of the sleeve serving as a holding down represent the production edges resulting from the production of the blank of the sleeve cutting edges.
  • the hold-down device according to the invention for a fuel injection device with the characterizing features of claim 1 has the advantage that it has a particularly simple design, is very simple and inexpensive to produce and still a very effective holddown of a fuel injector in a receiving bore of a cylinder head or an intake pipe is achieved.
  • conventional manufacturing processes such as stamping, eroding or laser cutting
  • blanks for the subsequent hold-down can be removed from sheets of spring steel or stainless steel and bent into numerous, quite complex desired shapes.
  • the inventive embodiment of the hold-down is characterized in particular by its compact design, so that the radially required space is extremely low, especially in the region of the passage of the connector of the fuel injection valve.
  • the fuel injector includes at least one fuel injector, a fuel injector containment bore, and a fuel rail manifold, the hold down being clamped between a shoulder of the fuel injector and an end surface of the port.
  • the hold-down device has a part-ring-shaped base element, from which an axially compliant hold-down bracket extends, which has at least two webs, two inclined sections and two contact sections.
  • the hold-down device in the circumferential direction with an open area in such a way that it is penetrated by the connection plug of the fuel injection valve, so that an unambiguous installation position is defined for the hold-down device.
  • a Verwarfix ist the blank holder relative to the connection piece is eliminated by the mating pin / recess on the fuel injector / nozzle.
  • the holding-down device is mounted on the fuel injection valve in such a way that a hold-down clip subjected to bending stress is directed away from the connection plug of the fuel injection valve.
  • FIG. 1 a partially illustrated fuel injection device with a known first hold-down in a side view
  • FIG. 2 in the fuel injection device of FIG. 1 used hold-down as a single component
  • FIG. 3 a known second embodiment of a hold-down
  • FIG. 4 an embodiment of a hold-down device according to the invention.
  • a valve in the form of an injection valve 1 for fuel injection systems of mixture-compression spark-ignited internal combustion engines is shown in a side view.
  • the fuel injection valve 1 is Part of a fuel injector.
  • the fuel injection valve 1 which is designed in the form of a direct-injection injector for injecting fuel directly into a combustion chamber of the internal combustion engine, is installed in a receiving bore of a cylinder head, not shown.
  • a sealing ring 2, in particular of Teflon®, ensures optimum sealing of the fuel injection valve 1 with respect to the wall of the cylinder head.
  • the valve receptacle can also be provided on a receiving socket of a suction pipe, not shown.
  • the fuel injection valve 1 has at its inlet-side end 3 a plug connection to a fuel distributor line 4, which is sealed by a sealing ring 5 between a connection piece 6 of the fuel distributor line 4, which is shown in section, and an inlet connection 7 of the fuel injection valve 1.
  • the fuel injection valve 1 has an electrical connection plug 8 for the electrical contacting for actuating the fuel injection valve 1.
  • a holding-down device 10 is provided between the fuel injection valve 1 and the connecting piece 6.
  • the hold-down 10 is designed as a bow-shaped component, for example as a stamped and bent part.
  • the hold-down 10 has a part-ring-shaped base element 11, wherein this base element 11, which does not rotate through 360 °, but for example has only an extension of about 250 ° to 320 °, is supported on a shoulder 12 of the fuel injection valve 1.
  • axially resilient hold-down bracket 13 of the hold-down 10 abuts a downstream end surface 14 of the connecting piece 6 to the fuel rail 4 in the installed state.
  • the hold-down 10 is interrupted, said known hold-down 10 forms a closed bracket element, in particular the FIG. 2 clarified.
  • the hold-down 10 can surround the fuel injector 1 and still allows the passage of the electrical connector plug 8.
  • the hold-down bar 13 protrudes with its resilient brackets from the connector 8 away.
  • a pin-shaped raised pin 15 is provided on the fuel injection valve 1, which corresponds to a groove-like depression or recess 16 on the connecting piece 6 of the fuel distribution line 4.
  • the protruding into the recess 16 pin 15 of the fuel injector 1 provides a direct and thus very secure rotation of the fuel injector 1 relative to the fuel rail 4 and for a reliable assignment of the rotational position of the blank holder 10 to the fuel injector 1.
  • the in the fuel injection device according to FIG. 1 used down device 10 is in the FIG. 2 again shown as a single component.
  • the hold-down 10 is characterized by the fact that, starting from a planar part-ring-shaped base element 11, at least one bent, axially resilient hold-down bar 13 extends out of the plane of the base element 11.
  • the base member 11 is formed like a plunger and surrounds the fuel injection valve 1 in the region of its inflow-side end 3.
  • the base member 11 is made flat, for example, with a thickness of about 1.5 mm, so that a large bearing surface on the shoulder 12 is present.
  • two webs 21 extend with increased width largely in the axial direction and thus substantially perpendicular to the extension plane of the base member 11. These webs 21 go kinked into the actual axially resilient hold-down bracket 13, wherein the hold-down bracket 13 composed of three essential sections.
  • the hold-down bar 13 has, starting from the webs 21, only a small axial extent, which results from two uniform oblique sections 22.
  • the oblique sections 22 merge into slightly curved contact sections 23 which, in the installed state, ultimately have touching contact with the end face 14 of the connecting piece 6.
  • a connecting portion 24 is provided, which is designed to be slightly lowered relative to the abutment portions 23 and ensures that the entire hold-down 10 is closed.
  • a likewise known hold-down device 10 In contrast to the hold-down device 10 described above, a likewise known hold-down device 10 according to FIG. 3 no connection portion 24, so that an overall open holddown 10 is present.
  • the webs 21 extend with respect to their wall thickness twisted relative to the base member 11, wherein the transition region 25 is rotated to the outside.
  • the webs 21 go over bent into the actual axially resilient hold-down bar 13, wherein the hold-down bar 13 composed of two sections.
  • the oblique sections 22 merge into slightly curved contact sections 23 which, in the installed state, ultimately have touching contact with the end face 14 of the connecting piece 6.
  • the basic element 11 of the hold-down 10 is designed edgewise and, for example, again has a wall thickness of about 1.5 mm.
  • FIG. 4 an embodiment of a hold-down 10 according to the invention is shown.
  • two transition regions 25, which further upright from the sheet metal alignment and thereby largely parallel to each other. Without rotation, the transitional regions 25 merge into the two webs 21, which are likewise largely aligned parallel to one another and extend out of the plane of the base element 11. Since no rotation takes place in the transition regions 25, the two webs 21 face with their broad sides of this sheet metal section and not with their cutting edges 27, which arise from the sheet when being removed.
  • the base element 11 opposite end of the webs 21, however, these are twisted or bent by 90 °, for example, as in FIG. 4 shown outward.
  • the inclined section 22 parallel to each other, now facing by the rotation of the cut edges 27, and back in the direction from the open area 20 back ,
  • the oblique sections 22 merge into slightly curved contact sections 23 which, in the installed state, ultimately have touching contact with the end face 14 of the connecting piece 6 and terminate separately from one another.
  • the hold-down 10 again has a wall thickness of about 1.5 mm.
  • the hold-down 10 is removed, for example, by punching, eroding or laser cutting from sheets of spring steel or stainless steel (with a thickness of about 1.5 mm) and subsequently brought into the desired shape by means of bending.
  • An opening 28 provided in the base element 11 can serve for transport reception during the production run and has no influence on the actual hold-down function.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
EP09753724A 2008-05-30 2009-04-07 Niederhalter für eine brennstoffeinspritzvorrichtung Active EP2286081B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008002122A DE102008002122A1 (de) 2008-05-30 2008-05-30 Niederhalter für eine Brennstoffeinspritzvorrichtung
PCT/EP2009/054137 WO2009144069A1 (de) 2008-05-30 2009-04-07 Niederhalter für eine brennstoffeinspritzvorrichtung

Publications (2)

Publication Number Publication Date
EP2286081A1 EP2286081A1 (de) 2011-02-23
EP2286081B1 true EP2286081B1 (de) 2011-10-05

Family

ID=40885923

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09753724A Active EP2286081B1 (de) 2008-05-30 2009-04-07 Niederhalter für eine brennstoffeinspritzvorrichtung

Country Status (8)

Country Link
US (1) US8707930B2 (zh)
EP (1) EP2286081B1 (zh)
JP (1) JP5243601B2 (zh)
KR (1) KR101562838B1 (zh)
CN (1) CN102046958B (zh)
AT (1) ATE527443T1 (zh)
DE (1) DE102008002122A1 (zh)
WO (1) WO2009144069A1 (zh)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5822272B2 (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
DE102012206241A1 (de) * 2012-04-17 2013-10-17 Robert Bosch Gmbh Vorrichtung zum Niederhalten eines Ventils zum Zumessen von Kraftstoff
DE102012206887A1 (de) 2012-04-26 2013-10-31 Robert Bosch Gmbh Anordnung mit einem Brennstoffverteiler und mehreren Brennstoffeinspritzventilen
JP5955198B2 (ja) 2012-11-02 2016-07-20 株式会社ケーヒン 直噴式燃料噴射弁の支持構造
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
JP6074794B2 (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
EP2824312B1 (en) * 2013-07-10 2017-06-28 Continental Automotive GmbH Fuel injection assembly for a combustion engine
DE102013218824A1 (de) 2013-09-19 2015-03-19 Robert Bosch Gmbh Niederhalter für eine Brennstoffeinspritzvorrichtung
DE102014200586A1 (de) * 2014-01-15 2015-07-16 Robert Bosch Gmbh Brennstoffeinspritzanlage mit einer Brennstoff führenden Komponente, einem Brennstoffeinspritzventil und einem Verbindungselement
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
JP6380185B2 (ja) * 2015-03-23 2018-08-29 株式会社デンソー 燃料噴射弁用クリップおよび燃料噴射弁ユニット
JP6389813B2 (ja) * 2015-09-29 2018-09-12 日立オートモティブシステムズ株式会社 回転規制部材及び、組み立て体。
KR101739694B1 (ko) * 2016-06-13 2017-05-24 주식회사 현대케피코 인젝터 클립
DE102016210573A1 (de) 2016-06-14 2017-12-14 Volkswagen Aktiengesellschaft Anordnung zur Verbindung mindestens eines Brennstoffeinspritzventils an einem Kraftstoffverteiler einer Kraftstoffeinspritzanlage und Kraftstoffeinspritzanlage einer Brennkraftmaschine
KR101768395B1 (ko) 2016-10-21 2017-08-14 주식회사 현대케피코 인젝터 클립
TR201619492A2 (tr) * 2016-12-26 2018-07-23 Bosch Sanayi Ve Tic A S Bi̇r yakit enjektörü i̇çi̇n bi̇r tutma ci̇hazi
DE102018120239A1 (de) 2018-08-20 2020-02-20 Volkswagen Aktiengesellschaft Anordnung eines Brennstoffeinspritzventils an einem Kraftstoffverteiler einer Brennkraftmaschine

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DE2926490A1 (de) 1979-06-30 1981-02-05 Bosch Gmbh Robert Kraftstoffeinspritzanlage
US5074269A (en) * 1991-04-29 1991-12-24 Chrysler Corporation Anti-rotation fuel injector clip
US5501195A (en) 1994-09-16 1996-03-26 Siemens Automotive Corporation Retainer arrangement for a bottom feed fuel injector
DE10108193A1 (de) 2001-02-21 2002-08-29 Bosch Gmbh Robert Befestigungsvorrichtung
DE10152421A1 (de) * 2001-10-24 2003-06-18 Bosch Gmbh Robert Befestigungsvorrichtung
DE10163030B4 (de) 2001-12-20 2014-10-09 Robert Bosch Gmbh Befestigungsvorrichtung
WO2005083262A1 (de) * 2004-02-26 2005-09-09 Robert Bosch Gmbh Stützelement
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
US7360524B2 (en) * 2004-12-03 2008-04-22 Millenium Industries, Inc. Fuel injector retention clip
US7406946B1 (en) * 2007-04-02 2008-08-05 Hitachi, Ltd. Method and apparatus for attenuating fuel pump noise in a direct injection internal combustion chamber
JP4558021B2 (ja) * 2007-09-06 2010-10-06 日立オートモティブシステムズ株式会社 燃料噴射弁およびその支持方法

Also Published As

Publication number Publication date
CN102046958B (zh) 2013-08-21
US20110186016A1 (en) 2011-08-04
US8707930B2 (en) 2014-04-29
WO2009144069A1 (de) 2009-12-03
DE102008002122A1 (de) 2009-12-03
ATE527443T1 (de) 2011-10-15
JP2011522147A (ja) 2011-07-28
JP5243601B2 (ja) 2013-07-24
KR101562838B1 (ko) 2015-10-23
EP2286081A1 (de) 2011-02-23
CN102046958A (zh) 2011-05-04
KR20110010745A (ko) 2011-02-07

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