EP0937892B1 - Dispositif pour démonter des conduits d'unités d'injection dans des moteurs à combustion interne - Google Patents

Dispositif pour démonter des conduits d'unités d'injection dans des moteurs à combustion interne Download PDF

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Publication number
EP0937892B1
EP0937892B1 EP99100669A EP99100669A EP0937892B1 EP 0937892 B1 EP0937892 B1 EP 0937892B1 EP 99100669 A EP99100669 A EP 99100669A EP 99100669 A EP99100669 A EP 99100669A EP 0937892 B1 EP0937892 B1 EP 0937892B1
Authority
EP
European Patent Office
Prior art keywords
pressure pipe
connection piece
injection
groove
bore
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
EP99100669A
Other languages
German (de)
English (en)
Other versions
EP0937892A2 (fr
EP0937892A3 (fr
Inventor
Johannes Dipl.-Ing. Hollweck (FH)
Klaus-Dieter Dipl.-Ing. Meyer (FH)
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.)
MAN Truck and Bus SE
Original Assignee
MAN Nutzfahrzeuge AG
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 MAN Nutzfahrzeuge AG filed Critical MAN Nutzfahrzeuge AG
Publication of EP0937892A2 publication Critical patent/EP0937892A2/fr
Publication of EP0937892A3 publication Critical patent/EP0937892A3/fr
Application granted granted Critical
Publication of EP0937892B1 publication Critical patent/EP0937892B1/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
    • 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
    • F02M55/004—Joints; Sealings
    • F02M55/005—Joints; Sealings for high pressure conduits, e.g. connected to pump outlet or to injector inlet
    • 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

Definitions

  • the invention relates to a device according to the preamble of the claim 1, respectively. of claim 2.
  • a device is for example known from the publication WO 97 02426 A.
  • the invention is therefore based on the object of a device for easy disassembly to develop the pressure pipe.
  • the dowel pin also connects the pressure pipe and the connector with a positive fit, so that the pressure pipe is easily pulled out of the hole in the cylinder head when dismantling can be without hindering the rotation of the connector becomes.
  • Fig. 1 shows in section a cylinder head 1 with an injection device which essentially consisting of an injection element 2, a pressure pipe 3 and a connecting element 4 is formed for connecting an injection line.
  • the pressure pipe 3 penetrates the cylinder head 1 in a bore 5.
  • the pressure pipe is on for sealing both ends with spherical sealing surfaces and is between connector 4 and the injection element 2 clamped. It has now become injectors this type shown that the pressure pipe 3 is difficult to remove from the bore 5 lets pull this problem out according to the invention on the one hand solved that one provides a spring clip 6, which the pressure pipe 3 and the connector 4 connects in such a positive manner that the pressure pipe 3 is connected via the connector 4 can pull out.
  • the pressure pipe 3 on the Connector 4 facing end with a circumferential groove 7, in which the spring clip 6 engages.
  • this has lateral recesses 8a, 8b (see also FIG. 2). The spring clip 6 is thus held in these recesses 8a, 8b so that it does not move axially can.
  • the connector 4 When dismantling, the connector 4 is first unscrewed from the cylinder head 1, the spring clip 6 rotates with it.
  • the spring clip can be in the groove 7 6 also turn relative to the pressure pipe 3, but is in the axial direction performed and consequently takes the pressure pipe when unscrewing the connector 4 3 with.
  • a section II-II is shown in FIG. 2.
  • the spring clip 6 is in the groove 7 of the pressure pipe 3 and is guided axially in this groove.
  • the axial guidance of the spring clip 6 in the connector 4 is accomplished by the recesses 8a and 8b.
  • FIG. 3 A further embodiment for dismantling the pressure pipe 3 is shown in FIG. 3.
  • the pressure pipe 3 again has a circumferential groove 7.
  • at least one dowel pin 9a is provided here, which connects the connecting piece 4 penetrates in a hole.
  • the Dowel pin 9a via the groove 7, the pressure pipe 3 from the bore 5 in the cylinder head 1.
  • a second roll pin 9b can also be provided.
  • Fig. 4 shows a section IV-IV in the plane of the groove 7.
  • the dowel pins 9a, 9b penetrate the connector 4 and are axially in the circumferential groove 7 of the pressure pipe 3 led.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)

Claims (2)

  1. Dispositif de démontage de conduites de pression d'unités d'injection de moteurs à combustion interne,
    une unité d'injection étant composée d'une pièce de branchement (4), d'un tube de pression (3) et d'un élément d'injection (2), le tube de pression traversant un perçage de la culasse en étant serré entre l'élément d'injection et la pièce de branchement,
    caractérisé en ce que
    la conduite de pression (3) comporte une rainure périphérique (7) à son extrémité tournée vers la pièce de branchement (4),
    la pièce de branchement (4) comporte des cavités (8a, 8b) qui se situent dans le plan de la rainure (7) à l'état monté, et
    un ressort en épingle à cheveux (6) (ressort en forme de U) est engagé dans la cavité (8a, 8b) et dans la rainure (7) pour réaliser une liaison par la forme, axiale tout en permettant la rotation de la conduite de pression (3) et de la pièce de branchement (4) l'une par rapport à l'autre.
  2. Dispositif de démontage de conduites de pression d'unités d'injection de moteurs à combustion interne,
    une unité d'injection étant composée d'une pièce de branchement (4), d'un tube de pression (3) et d'un élément d'injection (2), le tube de pression traversant un perçage de la culasse en étant serré entre l'élément d'injection et la pièce de branchement,
    caractérisé en ce que
    la conduite de pression (3) comporte une rainure périphérique (7) à l'extrémité tournée vers la pièce de branchement,
    la pièce de branchement (4) comporte au moins un perçage qui à l'état monté vient dans le plan de la rainure (7), et
    le perçage reçoit une goupille (9a) enfoncée de force de façon à réaliser une liaison par la forme axiale entre la rainure (7) dans la conduite de pression (3) et la pièce de branchement (4), tout en permettant la rotation relative de la conduite de pression (3) par rapport à la pièce de branchement (4).
EP99100669A 1998-02-24 1999-01-15 Dispositif pour démonter des conduits d'unités d'injection dans des moteurs à combustion interne Expired - Lifetime EP0937892B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19807711A DE19807711A1 (de) 1998-02-24 1998-02-24 Vorrichtung zur Demontage von Druckrohren an Eispritzeinheiten von Brennkraftmaschinen
DE19807711 1998-02-24

Publications (3)

Publication Number Publication Date
EP0937892A2 EP0937892A2 (fr) 1999-08-25
EP0937892A3 EP0937892A3 (fr) 2003-01-02
EP0937892B1 true EP0937892B1 (fr) 2003-09-24

Family

ID=7858741

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99100669A Expired - Lifetime EP0937892B1 (fr) 1998-02-24 1999-01-15 Dispositif pour démonter des conduits d'unités d'injection dans des moteurs à combustion interne

Country Status (2)

Country Link
EP (1) EP0937892B1 (fr)
DE (2) DE19807711A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19945158C1 (de) * 1999-09-21 2000-12-07 Siemens Ag Leckageanschluß mit Stiftsicherung
CN111577499B (zh) * 2020-04-26 2021-11-05 安徽航瑞航空动力装备有限公司 侧进油喷油器进油装置及发动机

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE8134504U1 (de) * 1981-11-26 1983-10-06 Bayerische Motoren Werke Ag, 8000 Muenchen Kraftstoff-einspritzanlage fuer brennkraftmaschinen
DE9206268U1 (de) * 1992-05-09 1993-09-09 Robert Bosch Gmbh, 70469 Stuttgart Kraftstoffzuleitungseinrichtung für eine Einspritzdüse
DE4239173C1 (en) * 1992-11-21 1993-09-02 Mercedes-Benz Aktiengesellschaft, 70327 Stuttgart, De Cylinder-head for fuel-injection engine - has pressure pipe passing through clamping screw and with union at protruding end for injection pipe
US5775303A (en) * 1995-06-30 1998-07-07 Cummins Engine Company, Inc. High Pressure Fuel Line Connection
DE19524520A1 (de) * 1995-07-05 1997-01-09 Bosch Gmbh Robert Kraftstoffeinspritzventil für Brennkraftmaschinen
DE19608574A1 (de) * 1996-03-06 1997-09-11 Bosch Gmbh Robert Kraftstoffzuleitungseinrichtung

Also Published As

Publication number Publication date
EP0937892A2 (fr) 1999-08-25
DE19807711A1 (de) 1999-09-09
DE59907068D1 (de) 2003-10-30
EP0937892A3 (fr) 2003-01-02

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