EP1134407A1 - 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
EP1134407A1
EP1134407A1 EP01102653A EP01102653A EP1134407A1 EP 1134407 A1 EP1134407 A1 EP 1134407A1 EP 01102653 A EP01102653 A EP 01102653A EP 01102653 A EP01102653 A EP 01102653A EP 1134407 A1 EP1134407 A1 EP 1134407A1
Authority
EP
European Patent Office
Prior art keywords
section
pressure sleeve
injection nozzle
receiving bore
ring
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
EP01102653A
Other languages
German (de)
English (en)
Other versions
EP1134407B1 (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 to a preamble of claim 1 Fastening device for a fuel injection nozzle in / on an internal combustion engine, in which the injection nozzle by means of one under the axial action of a Clamping device against a pressure sleeve bearing on the nozzle-side clamping shoulder with a free, stepped end section clamped in a stepped receiving bore is arranged, being between the receiving bore and the inserted A radial clearance is provided in the pressure sleeve.
  • Such a device is known for example from DE 195 11 703 A1, at which is the clamping force on the injector via one of the system of the injector achieved in the stepped mounting hole slightly spaced clamping shoulder is, however, the injection nozzle in the pressure sleeve and this in the receiving bore the internal combustion engine over a considerable longitudinal extent are arranged swingable.
  • the free swing length of an injection nozzle is according to one of the EP 0 774 579 A1 known, non-generic fastening device avoided that the tensioning device immediately on an outside of the Receiving hole arranged clamping shoulder of the injection nozzle acts, however the clamping force applied by means of the clamping device over a considerable Length of the injector the support in the stepped receiving bore supplied is. Depending on the rigidity of the clamping device, this can be done with radial Play injector arranged in the receiving bore to vibrate their entire length be excited.
  • the invention has for its object a generic fastening device to further develop such that the oscillation lengths of the injection nozzle are shortened.
  • pressure sleeve is equipped with means, each under the axial action of the clamping device radial deformation until it rests against the wall of the mounting hole and are subject to contact with the injection nozzle.
  • a cylindrical designed pressure sleeve in three telescopically guided sections is divided, with a radially inward between the first pair of end faces Injector deformable crimp ring and between the second pair of faces arranged a radially outward deformable pinch ring is.
  • the respective squeeze ring is preferably an O-ring made of a rubber-elastic one or elastomeric material.
  • DE-AS 1 097 760 is a fastening device for a fuel injector known on an internal combustion engine in which a screw-in Pressure sleeve in the mounting hole near a centering using a sealing ring is sealed and also the injection nozzle arranged in the pressure sleeve is sealed against the pressure sleeve via a further sealing ring, however this document gives no indication that such sealing rings as radial Crimp rings for positive and non-positive connection between the pressure sleeve and the receiving bore on the one hand and the pressure sleeve and the injection nozzle on the other hand, to shorten the free oscillation lengths of the injection nozzle use.
  • pressure sleeve in two sections is divided, the one section over a slotted explosive cone section into a slit formed in a collar of the other section Spreading cone section engages, the spreading cone section radially outward to the receiving bore and the explosive cone section radially inward to the injection nozzle is deformed.
  • a one-piece pressure sleeve between a pressure ring and a sleeve portion a bellows-like section made of truncated cones has, abutting base diameter of two adjacent truncated cones limit an expansion collar and also abutting tip diameters a centering collar on the nozzle side of two adjacent truncated cones limit, the bellows-like section is provided with longitudinal slots.
  • DE 195 08 305 A1 describes a fastening device for a fuel injector known in / on an internal combustion engine, in which one of the Injection nozzle with clearance through a bellows-like extension and an intermediate pressure ring on the clamping shoulder of the injection nozzle works, but here the abutment of the bulging shaft sections serves Development of a high axial compressive stress. Centering the injector is not recognizable over the bellows-like section.
  • a fastening device 1 for a fuel injector 2 in / on a Internal combustion engine 3 provides that the injection nozzle 2 by means of one under the axial action of a clamping device 4 against one nozzle-side clamping shoulder 5 adjacent pressure sleeve 6 with a free, stepped End section 7 is arranged clamped in a stepped receiving bore 8, a between the receiving bore 8 and the inserted pressure sleeve 6 Radial play is given.
  • the Pressure sleeve 6 to a relatively close to the support of the injector 2 in the stepped Receiving hole 8 spaced clamping shoulder 5, which is above the clamping shoulder 5 in the direction of the clamping device 4 for the injection nozzle 2 and of the pressure sleeve 6 that defines it in sections is a relatively long one Vibration length results due to at least that between the pressure sleeve 6 and the Location bore 8 given radial play.
  • the invention proposed that the respective pressure sleeve 6 ', 6 ". 6" with means is equipped, each under the axial action of the clamping device 4 radial deformation up to the wall 9 of the receiving bore 8 and subject to contact with the injector 2.
  • FIG. 2a shows the composite pressure sleeve 6 'according to the invention with below the effect of the clamping device 4, not shown, radially outwards and radially inwardly deformed crimp rings 14 and 12, the deformed Crush ring 14, the pressure sleeve 6 'against the wall 9 of the receiving bore 8 supports and the deformed crimp ring 12, the injector 2 relative to the pressure sleeve 6 'centered.
  • the respective squeeze ring 12 or 14 is preferably an O-ring made of one rubber-elastic or elastomeric material.
  • a further embodiment of the invention shows in FIG. 3 a cylindrical one Pressure sleeve 6 ", which is divided into two sections 15 and 15 '.
  • the upper section 15 has a slotted explosive cone section 16, which in one in a collar 17 of the other section 15 'formed, slotted expansion cone section 18th engages, the expansion cone section 18 or the collar 17 radially outward Receiving bore 8 of Figure 1 and the explosive cone section 16 radially inward is deformed to the injector 2 of Figure 1.
  • Under the action of the tensioning device 4 of FIG. 1 cause the explosive cone section 16 and the expanding cone section 18 a radial according to the action reaction in the mounting arrangement shown in FIG. 3a Outward deformation to the receiving bore 8 and a radial deformation towards the injector 2.
  • FIG. 4 shows a one-piece pressure sleeve 6 '' 'which is between a pressure ring 19 and a sleeve section 20 a bellows-like section 21 of mutually directed truncated cones 22, 22 'and 22 " limit abutting base diameters of two adjacent truncated cones 22 and 22 'an expanding collar 23 and abutting tip diameters two adjacent truncated cones 22 'and 22 "a centering collar on the nozzle side 24.
  • the bellows-like section 21 is provided with longitudinal slots 25, order with appropriate wall thickness of the truncated cones 22, 22 'and 22 "in the axial Force introduction by means of the clamping device 4 of Figure 1 a radial expansion to achieve the expansion collar 23 and a radial constriction of the centering collar 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 in FIG. 1 to establish vibration-free.

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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)
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 true EP1134407A1 (fr) 2001-09-19
EP1134407B1 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)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004031562A2 (fr) * 2002-09-30 2004-04-15 Fev Motorentechnik Gmbh Culasse de cylindre pour moteur a combustion a injection directe
EP1764501A1 (fr) * 2005-09-15 2007-03-21 Delphi Technologies, Inc. Dispositif de montage d'injecteur de carburant

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
EP0774579A1 (fr) 1995-11-17 1997-05-21 Automobiles Peugeot Dispostif pour la fixation d'un injecteur de carburant sur une culasse de moteur à combustion interne
WO1998045595A1 (fr) * 1997-04-10 1998-10-15 Automobiles Peugeot Dispositif de fixation d'un injecteur de carburant sur une culasse de moteur a combustion interne

Family Cites Families (1)

* 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

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
EP0774579A1 (fr) 1995-11-17 1997-05-21 Automobiles Peugeot Dispostif pour la fixation d'un injecteur de carburant sur une culasse de moteur à combustion interne
WO1998045595A1 (fr) * 1997-04-10 1998-10-15 Automobiles Peugeot Dispositif de fixation d'un injecteur de carburant sur une culasse de moteur a combustion interne

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2004031562A2 (fr) * 2002-09-30 2004-04-15 Fev Motorentechnik Gmbh Culasse de cylindre pour moteur a combustion a injection directe
WO2004031562A3 (fr) * 2002-09-30 2005-05-06 Fev Motorentech Gmbh Culasse de cylindre pour moteur a combustion a injection directe
EP1764501A1 (fr) * 2005-09-15 2007-03-21 Delphi Technologies, Inc. Dispositif de montage d'injecteur de carburant

Also Published As

Publication number Publication date
DE50111297D1 (de) 2006-12-07
DE10012571A1 (de) 2001-09-20
ES2272363T3 (es) 2007-05-01
EP1134407B1 (fr) 2006-10-25

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