EP1134407B1 - Dispositif de fixation d'un injecteur à combustible dans un moteur à combustion interne - Google Patents

Dispositif de fixation d'un injecteur à combustible dans un moteur à combustion interne Download PDF

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Publication number
EP1134407B1
EP1134407B1 EP20010102653 EP01102653A EP1134407B1 EP 1134407 B1 EP1134407 B1 EP 1134407B1 EP 20010102653 EP20010102653 EP 20010102653 EP 01102653 A EP01102653 A EP 01102653A EP 1134407 B1 EP1134407 B1 EP 1134407B1
Authority
EP
European Patent Office
Prior art keywords
injection nozzle
pressure sleeve
receiving bore
ring
sleeve
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
EP20010102653
Other languages
German (de)
English (en)
Other versions
EP1134407A1 (fr
Inventor
Karl Mayr
Rüdiger Tangemann
Günter Watzinger
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke 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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP1134407A1 publication Critical patent/EP1134407A1/fr
Application granted granted Critical
Publication of EP1134407B1 publication Critical patent/EP1134407B1/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
    • 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 according to the preamble of independent claim 1 to a mounting device of a fuel injector in / on an internal combustion engine, wherein the injector by means of a voltage applied under the axial action of a clamping device against a nozzle-side clamping shoulder pressure sleeve with a free, stepped end portion is arranged clamped in a stepped receiving bore, wherein between the receiving bore and the inserted pressure sleeve, a radial clearance is provided.
  • Such a device is known for example from DE 195 11 703 A1, in which although the clamping force on the injection nozzle via a system of the injection nozzle in the stepped receiving bore slightly spaced clamping shoulder is achieved, but the injection nozzle in the pressure sleeve and this in the receiving bore of Internal combustion engine are arranged freely oscillated over a considerable longitudinal extent.
  • the invention has the object of developing a generic fastening device such that vibration lengths of the injector are shortened.
  • a cylindrically shaped pressure sleeve is divided into three telescopically guided sections, wherein between the first end face pair a radially inwardly deformable injection pin to the injection molding and between the second end face pair a radially outward to the receiving bore deformable pinch ring is arranged.
  • the respective squeeze ring is an O-ring made of a rubber-elastic or elastomeric material.
  • DE-AS 1 097 760 a fastening device for a fuel injection nozzle to an internal combustion engine is known in which a screw-in pressure sleeve is sealed in the receiving bore near a centering means of a sealing ring and further arranged in the pressure sleeve injection nozzle relative to the Pressure sleeve is sealed by a further sealing ring, however, this document is no indication to remove such seals as radial Quetschringe for positive and non-positive connection between the pressure sleeve and the receiving bore on the one hand and the pressure sleeve and the injector on the other hand to shorten the free vibration lengths of the injector to use.
  • a further advantageous embodiment of the pressure sleeve according to the invention is characterized in that a cylindrically shaped pressure sleeve is divided into two sections, wherein the one portion engages over a slotted Sprengkegelabsacrificing in a formed in a collar of the other portion, slotted Sp lanternkegelabsacrificing, wherein the Sp lanternkegelabsacrificing radially outwardly to Receiving bore and the detonator portion is deformed radially inwardly to the injection nozzle.
  • a one-piece pressure sleeve between a pressure ring and a sleeve portion has a bellows-like portion of oppositely directed truncated cones, wherein abutting base diameter of two adjacent truncated cones limit a Sp Dahlbund and further limit abutting tip diameter of two adjacent truncated cones a nozzle-side centering , wherein the bellows-like portion is provided with longitudinal slots.
  • a fastening device 1 of a fuel injection nozzle 2 in / on an internal combustion engine 3 not shown, it is provided that the injection nozzle 2 by means of a voltage acting under the axial action of a clamping device 4 against a nozzle-side clamping shoulder 5 pressure sleeve 6 with a free, stepped end portion 7 is arranged clamped in a stepped receiving bore 8, wherein between the receiving bore 8 and the inserted pressure sleeve 6, a radial clearance is given.
  • the pressure sleeve 6 acts on a relatively close to the support of the injection nozzle 2 in the stepped receiving bore 8 spaced clamping shoulder 5, whereby above the clamping shoulder 5 in the direction of the clamping device 4 for the injection nozzle. 2 and the sections, they delimiting pressure sleeve 6 gives a relatively long swing length due to at least the given between the pressure sleeve 6 and the receiving bore 8 radial clearance.
  • the invention proposes that the respective pressure sleeve 6 ', 6 ".6" is equipped with means under the axial action of the clamping device 4 each one radial deformation until it rests against the wall 9 of the receiving bore 8 and subject to the injection nozzle 2.
  • FIG. 2 a shows the composite pressure sleeve 6 'according to the invention with radially outwardly deformed clamping rings 14 and 12 under the action of the clamping device 4, wherein the deformed crush ring 14 supports the pressure sleeve 6' against the wall 9 of the receiving bore 8 and the deformed crimp ring 12 centers the injection nozzle 2 relative to the pressure sleeve 6 '.
  • the respective squeezing ring 12 or 14 is preferably an O-ring made of a rubber-elastic or elastomeric material.
  • FIG. 3 shows a cylindrically shaped pressure sleeve 6 ", which is subdivided into two sections 15 and 15 '.
  • the upper section 15 has a slotted detonating cone section 16 which is inserted into a collar 17 of the other section 15'. 1, and the detonator portion 16 is radially inwardly deformed to the injection nozzle 2 of Figure 1.
  • Figure 4 shows a one-piece pressure sleeve 6 '' 'which has a bellows-like portion 21 of oppositely directed truncated cones 22, 22' and 22 "between a pressure ring 19 and a sleeve portion 20.
  • abutting base diameters of two adjacent truncated cones 22 and 22 delimit each other 22 'a Sp Drund 23 and abutting tip diameter of two adjacent truncated cones 22' and 22 "a nozzle-side centering 24.
  • the bellows-like portion 21 is provided with longitudinal slots 25, with a corresponding wall thickness of the truncated cones 22, 22 'and 22" at axial force introduction means the clamping device 4 of Figure 1 to achieve a radial expansion of the Sp Dahlbundes 23 and a radial constriction of the Zentrierbundes 24, on the one hand to fix the injection nozzle 2 relative to the pressure sleeve 6 '' 'and on the other hand, the pressure sleeve 6' '' relative to the receiving bore 8 of the figure 1 vibration-free set.

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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)

Claims (5)

  1. Dispositif de fixation d'un injecteur de carburant dans/ sur un moteur à combustion interne, dans lequel
    - l'injecteur (2) est monté par serrage avec une partie d'extrémité libre étagée (7) dans un orifice de réception (8) étagé au moyen d'une bague (6) appliquée contre un épaulement de serrage (5) côté injecteur sous l'action axiale d'un dispositif de serrage (4) et au moins
    - un jeu radial est prévu entre l'orifice de réception (8) et la bague (6) introduite,
    caractérisé en ce que
    - la bague (6', 6", 6''') est équipée de moyens, qui,
    - sous l'action axiale du dispositif de serrage (4), subissent à chaque fois une déformation radiale jusqu'à ce qu'ils soient en appui contre la paroi (9) de l'orifice de réception (8) et en appui contre l'injecteur (2).
  2. Dispositif selon la revendication 1,
    caractérisé en ce que
    - une bague cylindrique (6') est divisée en trois parties (10, 10', 10'') guidées conjointement de manière télescopique,
    - une bague de pincement (12) déformable radialement vers l'intérieur par rapport à l'injecteur (2) étant disposée entre la première paire de surfaces frontales (11, 11'), et
    - une bague de pincement (14) déformable radialement vers l'extérieur par rapport à l'orifice de réception (8) étant disposée entre la deuxième paire de surfaces frontales (13, 13').
  3. Dispositif selon la revendication 2,
    caractérisé en ce que
    la bague de pincement respective (12, 14) est un joint torique composé d'un matériau en gomme élastique ou en élastomère.
  4. Dispositif selon la revendication 1,
    caractérisé en ce que
    - une bague cylindrique (6") est divisée en deux parties (15, 15'),
    - une partie (15) s'engage avec une partie de cône d'explosion fendue (16) dans une partie de cône d'écartement (18) fendue et formée dans un épaulement (17) de l'autre partie (15'), et
    - la partie de cône d'écartement (18) se déforme radialement vers l'extérieur vers l'orifice de réception (8), alors que la partie de cône d'explosion (16) se déformant radialement vers l'intérieur vers l'injecteur (2).
  5. Dispositif selon la revendication 1,
    caractérisé en ce que
    - une bague (6") réalisée en une seule pièce présente, entre une bague de pression (19) et une partie de manchon (20), une partie en forme de soufflet (21) composée de cônes tronqués (22, 22', 22") orientés les uns par rapport aux autres,
    - les diamètres de base les uns contre les autres de deux cônes tronqués (22, 22') adjacents délimitant un épaulement d'écartement (23) et
    - les diamètres de pointe les uns contre les autres de deux cônes tronqués (22', 22") adjacents délimitant un épaulement de centrage (24) coté injecteur,
    - la partie en forme de soufflet (21) étant munie de fentes longitudinales (25).
EP20010102653 2000-03-15 2001-02-07 Dispositif de fixation d'un injecteur à combustible dans un moteur à combustion interne Expired - Lifetime EP1134407B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2000112571 DE10012571A1 (de) 2000-03-15 2000-03-15 Befestigungs-Vorrichtung für eine Kraftstoff-Einspritzdüse in/an einer Brennkraftmaschine
DE10012571 2000-03-15

Publications (2)

Publication Number Publication Date
EP1134407A1 EP1134407A1 (fr) 2001-09-19
EP1134407B1 true EP1134407B1 (fr) 2006-10-25

Family

ID=7634785

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20010102653 Expired - Lifetime EP1134407B1 (fr) 2000-03-15 2001-02-07 Dispositif de fixation d'un injecteur à combustible dans un moteur à combustion interne

Country Status (3)

Country Link
EP (1) EP1134407B1 (fr)
DE (2) DE10012571A1 (fr)
ES (1) ES2272363T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10304392A1 (de) * 2002-09-30 2004-04-08 Fev Motorentechnik Gmbh Zylinderkopf für eine direkteinspritzende Brennkraftmaschine
EP1764501A1 (fr) * 2005-09-15 2007-03-21 Delphi Technologies, Inc. Dispositif de montage d'injecteur de carburant

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2777431A (en) * 1953-08-28 1957-01-15 Maschf Augsburg Nuernberg Ag Injection nozzle arrangement
DE1097760B (de) 1957-11-28 1961-01-19 Continental Motors Corp Brennstoffeinspritzduesenanordnung im Zylinderkopf einer Brennkraftmaschine
DE19508305A1 (de) * 1995-03-09 1996-09-12 Bayerische Motoren Werke Ag Vorrichtung zur Halterung einer Einspritzdüse an einem Maschinenteil, insbesondere im/am Zylinderkopf einer Brennkraftmaschine
DE19511703A1 (de) 1995-03-30 1996-10-02 Bayerische Motoren Werke Ag Vorrichtung zur Befestigung einer Einspritzdüse insbesondere am Zylinderkopf einer Brennkraftmaschine
FR2741396B1 (fr) 1995-11-17 1998-02-06 Peugeot Dispositif pour la fixation d'un injecteur de carburant sur une culasse de moteur a combustion interne
FR2762051B1 (fr) * 1997-04-10 1999-05-21 Peugeot Dispositif de fixation d'un injecteur de carburant sur une culasse de moteur a combustion interne

Also Published As

Publication number Publication date
EP1134407A1 (fr) 2001-09-19
DE10012571A1 (de) 2001-09-20
ES2272363T3 (es) 2007-05-01
DE50111297D1 (de) 2006-12-07

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