EP0627553B1 - Dispositif de fixation pour une soupape d'injection de combustible d'un moteur diesel - Google Patents

Dispositif de fixation pour une soupape d'injection de combustible d'un moteur diesel Download PDF

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Publication number
EP0627553B1
EP0627553B1 EP94108021A EP94108021A EP0627553B1 EP 0627553 B1 EP0627553 B1 EP 0627553B1 EP 94108021 A EP94108021 A EP 94108021A EP 94108021 A EP94108021 A EP 94108021A EP 0627553 B1 EP0627553 B1 EP 0627553B1
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EP
European Patent Office
Prior art keywords
nozzle holder
clamping frame
holding device
pressure channel
region
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
EP94108021A
Other languages
German (de)
English (en)
Other versions
EP0627553A1 (fr
Inventor
Dieter Dipl.-Ing. Reitz (Th)
Peter Dr.-Ing. Zima
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.)
Adam Opel GmbH
Opel Espana SLU
Original Assignee
Adam Opel GmbH
General Motors Espana SL
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 Adam Opel GmbH, General Motors Espana SL filed Critical Adam Opel GmbH
Publication of EP0627553A1 publication Critical patent/EP0627553A1/fr
Application granted granted Critical
Publication of EP0627553B1 publication Critical patent/EP0627553B1/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
    • F02M55/002—Arrangement of leakage or drain conduits in or from injectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/24—Cylinder heads
    • F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
    • F02F1/4214—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder
    • 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
    • F02M39/00—Arrangements of fuel-injection apparatus with respect to engines; Pump drives adapted to such arrangements
    • F02M39/02—Arrangements of fuel-injection apparatus to facilitate the driving of pumps; Arrangements of fuel-injection pumps; Pump drives
    • 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
    • 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
    • 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
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • 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 relates to a holding device for a fuel injection valve of a diesel engine, in which a nozzle holder is inserted from above into a chamber located in the cylinder head of the diesel engine, centered in this by cylindrical surfaces and pressed by clamping means with a sealing collar on a sealing surface of the chamber and in which an injection line coming from a fuel injection pump is guided laterally on the cylinder head to the nozzle holder.
  • Such a holding device is described with DE-PS 33 09 854.
  • the nozzle holder in the chamber is pressed onto a sealing surface by a claw attached to the top of the cylinder head with a sealing collar.
  • There is a conical attachment surface on the side of the nozzle holder which is accessible through a lateral opening in the chamber through the cylinder head.
  • An injection line with a conical end is led through this opening to the conical attachment surface on the nozzle holder.
  • the conical end of the injection line is held on the conical extension with a union nut that extends through the lateral opening through the cylinder head.
  • a bore runs in the cylinder head parallel to the injection line in the opening and is connected to a leak oil area via a connecting piece. Through the parallel A leakage oil quantity can thus be drained away in a controlled manner.
  • a disadvantage of such a holding device is that the claw for clamping the nozzle holder just takes up the space required for a direct-acting overhead camshaft which extends over the cylinder bank of a multi-cylinder in-line engine.
  • Such claws must also be made sufficiently stable so that the required sealing pressure between the nozzle holder and the cylinder head is ensured in spite of their usually very different coefficients of thermal expansion at all operating temperatures.
  • the claws thus require a considerable amount of space and are relatively heavy.
  • it is disadvantageous that the fuel flowing in pulsating under high pressure is turned through 90 ° at the connection point to the nozzle holder, as a result of which a strong pressure loss occurs, with disadvantageous consequences for the quality of the fuel preparation in the combustion chamber.
  • the side pressure connection also requires considerable space in addition to fastening the nozzle holder in the cylinder head area, which hinders both the optimal arrangement of the parts of the valve train and the cooling water supply.
  • This connection requires a lot of construction and is accordingly expensive. Additional effort is required to drain the leak oil from the injector.
  • DE-C-445 830 describes a holding device for a fuel injector, in which a fastening flange is held on two stud bolts by means of nuts on the end face of the injector nozzle countersunk in the cylinder head, the fastening flange covering the recess serving to receive the injector nozzle and, at the same time, a lateral one Hole for connecting a fuel line and a cross hole for connecting the side hole with a central hole of the Injector has.
  • Such a holding device mainly serves for the quick change of the injection nozzle. It is not possible to recirculate the leak oil that is unavoidable in diesel engines at the injection nozzle. If the injection nozzle is arranged between the gas exchange valves, the stud bolts with flange and nuts are difficult to accommodate in space.
  • the invention has for its object to improve a holding device of the generic type so that the disadvantages mentioned above are avoided.
  • the nozzle holder extends axially to a clamping bracket arranged below a camshaft transversely to the central axis of the nozzle holder and has a sealing cone on its upper end face, from the center thereof a pressure channel leads to the injection nozzle and from its edge area a leak oil hole leads to a leak oil area
  • the clamping bracket with a ball socket arranged between its ends on the sealing cone of the nozzle holder, with one of its end areas in a side opening on the cylinder head and with its other end area supports a clamping screw on the cylinder head, with a pressure channel leading from the center of the ball socket and a leakage oil hole from the edge area of the ball socket into the area of an end face of the clamping bracket
  • the edge area between the sealing cone of the nozzle holder and the ball socket of the clamping bracket is limited to the outside by an elastic seal and in Area of the end face of the clamping bracket, the pressure channel with an injection line and the drain hole are connected to a man
  • the clamping bracket can be inserted into the receiving opening with play.
  • An elastic seal which is held in a groove, is advantageously arranged between the clamping bracket and the reveal of the receiving opening.
  • the pressure channel preferably ends as a conical depression on the end face of the clamping bracket, which belongs to the end region which is supported by the receiving opening of the cylinder head, an end cone of an injection line being pressed into the conical depression in a sealing manner by a union nut acting on the clamping bracket.
  • the leak oil hole ends at the clamping bracket near the union nut of the pressure oil line in an area not covered by the union nut, the union nut in this area having a section with a round cross section and the adjacent area of the clamping bracket with a round section having the same cross section, and these two neighboring sections are sealingly covered by a molded part, which is followed by a drain line.
  • the molded part can advantageously be designed as a self-sealing elastomer molded part.
  • the pressure channel in the clamping bracket has an obtuse angle to the ball socket.
  • the bend is preferably 105 ° to 150 °.
  • the center axis of the pressure channel of the nozzle holder adjoining the sealing cone includes an acute angle with the center axis of the nozzle holder, which lies in a plane between the center axes of the nozzle holder and the clamping bracket and opens towards the injection nozzle in such a way that the transition from the pressure channel of the clamping bracket is as continuous as possible to the pressure channel of the nozzle holder.
  • the pressure channel of the nozzle holder can accommodate a high-pressure filter in a chamber in a manner known per se.
  • the high-pressure filter can also be arranged in a chamber of the pressure channel in the clamping bracket.
  • a ball socket is provided on the upper end face of the nozzle holder and instead of the ball socket, the clamping bracket is provided with a sealing cone between its ends.
  • the resulting advantage can, for. B. can be seen in better installation conditions.
  • a cylinder head 1 of a diesel engine sits on a cylinder block 2.
  • a cylinder head gasket 3 lies between the two.
  • Cylinders are arranged in the cylinder block 2, in each of which a piston 4 slides.
  • a working chamber 5 is formed from the cylinder head 1, the cylinder and the piston 4, to which inlet ducts or outlet ducts controlled by two inlet valves and two outlet valves lead.
  • Both the intake valves and the exhaust valves are actuated by a common camshaft 6, each with an intake cam on a bridge between the intake valve tappets 7 on each of the intake valves and with an exhaust cam on a bridge between the exhaust valve on each exhaust valve.
  • Cup tappets 8 acts.
  • a nozzle holder 10 is inserted in a stepped cylindrical chamber 9 of the cylinder head 1 and carries an injection nozzle 11 on its side facing the working chamber 5 in a manner known per se.
  • the nozzle holder 10 sits on a sealing surface 12 of the chamber 9 with the interposition of a seal 13.
  • the nozzle holder 10 extends upwards only to the upper bottom 14 of the cylinder head 1; d. H. it does not protrude significantly above the bottom 14 of the cylinder head 1 and space remains between its end face 15 and the camshaft 6.
  • a sealing cone 16 On the end face 15 of the nozzle holder 10 is a sealing cone 16 sunk, from the center of which a pressure channel 17 leads to the injection nozzle 11.
  • the pressure channel 17 comprises a chamber 18 in which a high pressure filter 19 is arranged.
  • a leak oil bore 20 coming from the leak oil region of the injection nozzle 11 ends in an edge region 21 extending around the sealing cone 16.
  • the camshaft 6 is mounted in a plane defined by the cylinder axes in the cylinder head 1 above the floor 14.
  • a web 25 and 26 is arranged on the bottom 14 of the cylinder head 1.
  • a receiving opening 28 is introduced in the web 26, through which a clamping bracket 29 is guided.
  • the clamping bracket 29 extends through the receiving opening 28 over the nozzle holder 10, on which it is supported with a ball socket 30 in the sealing cone 16, close to the web 25 opposite the receiving opening 28.
  • the clamping bracket 29 is by means of a clamping screw 31 stretched to the bottom 14 of the cylinder head 1.
  • the clamping bracket 29 lies in the receiving opening 28 with play. This play is bridged by an elastic seal 32 lying around the clamping bracket 29, which rests in the reveal of the receiving opening 28 and thus seals the receiving opening 28 against oil passage.
  • the clamping bracket 29 thus lies in the space between the end faces 15 of the nozzle holder 10 and the camshaft 6.
  • a pressure channel 33 which has an end 34 in the center of the ball socket 30 and a second end on the end face 35 carrying the receiving opening 28.
  • This second end on the end face 35 is provided with a conical depression 36, in which the end cone 38 of an injection line 39 is pressed in a sealing manner by means of a union nut 37.
  • a leak oil hole 40 which begins in the area covering the edge region 21 of the sealing cone 16 and ends before the thread of the union nut 37.
  • the edge region 21 is sealed to the outside between the clamping bracket 29 and the nozzle holder 10 by an elastic seal 41, preferably an O-ring made of an elastomeric plastic.
  • the union nut 37 has a cylindrical section 42 directed towards the clamping bracket 29 with the same diameter as the adjacent end of the clamping bracket 29. About this section 42 and over the end of the clamping bracket 29 protruding from the cylinder head 1, which has an equally cylindrical section 43 an elastomer molded part 44 is inserted, to which a manifold 45 connects, through which the leak oil emerging through the leak oil hole 40 is discharged.
  • a molded part sealed with conventional O-rings can also be plugged onto the cylindrical sections 42 and 43, the collecting line 45 starting from this molded part.
  • the pressure channel 33 extending in the clamping bracket 29 extends from the end face 35 to the area of the ball socket 30 in a straight line. Above the nozzle holder 10, it changes its direction towards the end 34 at an obtuse angle, which is in the range from 105 to 150 °.
  • the pressure channel 17 in the nozzle holder 10 continues with a likewise only slight change in direction in that the from the sealing cone 16 in the nozzle holder 10 extending pressure channel 17 with the central axis of the nozzle holder 10 flows an angle of about 7.5 °, which opens at least over a distance in the direction of the injection nozzle 11 such that an almost continuous transition from the pressure channel 33 of the Clamping bracket 29 to the pressure channel 17 of the nozzle holder 10 and ultimately to the injection nozzle 11 is given.
  • a ball socket is provided on the end face 15 of the nozzle holder 10 and a sealing cone is provided as a counterpart on the clamping bracket 29 instead of a ball socket.
  • the seal 41 is more protected and safer during assembly than the previously described embodiment, since it cannot be moved when the tensioning bracket 29 is inserted.
  • a camshaft 6 can be arranged centrally above the cylinders of the engine without the engine increasing in height as a result or without the installation space for the valve train is affected. It is thus possible to manage with only one camshaft in an engine with two as well as in an engine with four gas exchange valves per cylinder with a central arrangement of the injection nozzle in the combustion chamber, thus considerably reducing the costs compared to known engines.
  • the clamping bracket 29, which alone holds the nozzle holder 10 in the chamber 9 of the cylinder head 1 by pressing it on the sealing surface 12, requires only a small overall height and can be below the camshaft 6 may be arranged. Due to its arrangement, the clamping bracket 29 acts as a lever, which is with his one End in the receiving bore 28 of the web 26 on the cylinder head 1 and the other end is held by the clamping screw 31 to the cylinder head. At the ball socket 30 there is a higher holding force for the nozzle holder 10 due to the lever ratios on the clamping bracket 29 than at the clamping screw 31.
  • the tightness of the injection system can be checked via the amount of the leakage oil quantity without additional components and seals on the cylinder head 1.
  • the arrangement of the clamping bracket 29 as a lever between a fixed point arranged on the cylinder head 1, namely the receiving opening 28, the support point above the ball socket 30 on the sealing cone 16 and a clamping point on the clamping screw 31 is only a thread in the cylinder head 1 together with the one clamping screw 31 required for fastening the components. Due to the leverage of the tensioning bracket 29, the screwing force is also relatively low, ie the attachment can get by with a relatively light screw.

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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 (14)

  1. Dispositif pour la fixation d'un injecteur de combustible d'un moteur diesel, dans lequel un porte-injecteur (10) est monté depuis le haut dans une chambre (9) ménagée dans la culasse (1) du moteur diesel, est centré dans ladite chambre par des surfaces cylindriques et est pressé par des moyens de serrage à l'aide d'un épaulement d'étanchéité sur une surface d'étanchéité (12) de la chambre (9) et dans lequel une conduite d'injection (39) venant d'une pompe d'injection de combustible arrive latéralement sur la culasse (1) au porte-injecteur (10), caractérisé par le fait que le porte-injecteur (10) s'étend axialement jusqu'à une bride de serrage (29) disposée en dessous d'un arbre à cames (6), transversalement à l'axe central du porte-injecteur (10), présente à sa face frontale supérieure (15) un cône d'étanchéité (16) à partir du centre duquel un canal de refoulement (17) mène vers la buse d'injection (11) et à partir de la zone périphérique (21) duquel un canal de fuite (20) mène dans une zone de fuite, que la bride de serrage (29) s'appuie par un bossage-raccord (30) sphérique disposé entre ses extrémités sur le cône d'étanchéité (13) du porte-injecteur (10), par l'une de ses zones d'extrémité dans une ouverture de réception (28) ménagée latéralement sur la culasse (1), et par son autre zone d'extrémité par l'intermédiaire d'une vis de serrage (31) sur la culasse (1), qu'un canal de refoulement (30) et un canal de fuite (40) mènent l'un du centre du bossage-raccord (30) sphérique et l'autre de la zone périphérique (21) du bossage-raccord (30) sphérique dans la zone d'une face frontale de la bride de serrage (29), que la zone périphérique (21) entre le cône d'étanchéité (16) du porte-injecteur (10) et le bossage-raccord (30) sphérique de la bride de serrage (29) est délimitée vers l'extérieur par un joint élastique (41) et que, dans la zone de la face frontale (35) de la bride de serrage (29), le canal de refoulement (33) est relié à la conduite d'injection (39) et le canal de fuite (40) est relié à une conduite collectrice.
  2. Dispositif de fixation suivant la revendication 1, caractérisé par le fait que la bride de serrage (29) peut être engagée avec du jeu dans l'ouverture de réception (28).
  3. Dispositif de fixation suivant revendication 1 et 2, caractérisé par le fait qu'un joint élastique (32) est disposé entre la bride de serrage (29) et la surface intérieure de l'ouverture de réception (28).
  4. Dispositif de fixation suivant la revendication 3, caractérisé par le fait que le joint (32) est constitué par un joint torique et est maintenu dans une gorge.
  5. Dispositif de fixation suivant revendication 1 à 4, caractérisé par le fait que le canal de refoulement (33) se termine en tant que fraisure conique (36) sur la face frontale (35) de la bride de serrage (29), correspondant à la zone d'extrémité de ladite bride dont l'appui est assuré par l'ouverture de réception (28) de la culasse (1), un cône (38) prévu à l'extrémité de la conduite d'injection (39) étant appuyé de façon étanche, par un écrou de raccord (37) agissant sur la bride de serrage (29), dans ladite fraisure conique (36).
  6. Dispositif de fixation suivant revendication 1 à 5, caractérisé par le fait que le canal de fuite (40) se termine sur la bride de serrage (29), au voisinage de l'écrou de raccord (37), par une zone non recouverte par l'écrou de raccord (37), l'écrou de raccord (37) présentant dans cette zone un tronçon (42) de section circulaire et la zone voisine de la bride de serrage (29), un tronçon (43) ayant la même section circulaire, et que lesdits deux tronçons cylindriques (42, 43) voisins sont recouverts de façon étanche par une pièce moulée (44) à laquelle se raccorde une conduite collectrice de fuite (45).
  7. Dispositif de fixation suivant la revendication 6, caractérisé par le fait que la pièce moulée est réalisée sous la forme d'une pièce moulée en élastomère (44), à effet d'auto-étanchéité.
  8. Dispositif de fixation suivant revendication 1 à 7, caractérisé par le fait que le canal de refoulement (33) dans la bride de serrage (29) présente un coude qui fait un angle obtus par rapport au bossage-raccord (30) sphérique.
  9. Dispositif de fixation suivant la revendication 8, caractérisé par le fait que le coude du canal de refoulement (33) dans la bride de serrage (29) fait un angle de 105 à 150 degrés.
  10. Dispositif de fixation suivant revendication 1 à 9, caractérisé par le fait que l'axe central du canal de refoulement (17) qui, dans le porte-injecteur (10), se raccorde au cône d'étanchéité (16), fait avec l'axe central du porte-injecteur (10) un angle aigu situé dans un plan entre les axes centraux du porte-injecteur (10) et de la bride de serrage (29) et ouvert en direction de la buse d'injection (11) de manière que le canal de refoulement (33) dans la bride de serrage (29) se raccorde le plus progressivement possible au canal de refoulement (17) du porte-injecteur (10).
  11. Dispositif de fixation suivant revendication 1 à 10, caractérisé par le fait qu'une chambre (18) renfermant un filtre haute-pression (19) est prévue dans la ligne des canaux de refoulement (33, 17).
  12. Dispositif de fixation suivant la revendication 11, caractérisé par le fait que la chambre (18) pour le filtre haute-pression (19) est disposée dans le canal de refoulement (17) du porte-injecteur (10).
  13. Dispositif de fixation suivant la revendication 11, caractérisé par le fait que la chambre pour le filtre haute-pression est disposée dans le canal de refoulement (33) de la bride de serrage (29).
  14. Dispositif pour la fixation d'un injecteur de combustible d'un moteur diesel, dans lequel un porte-injecteur (10) est monté depuis le haut dans une chambre (9) ménagée dans la culasse (1) du moteur diesel, est centré dans ladite chambre par des surfaces cylindriques et est pressé par des moyens de serrage à l'aide d'un épaulement d'étanchéité sur une surface d'étanchéité (12) de la chambre (9) et dans lequel une conduite d'injection (39) venant d'une pompe d'injection de combustible arrive latéralement sur la culasse (1) au porte-injecteur (10), caractérisé par le fait que le porte-injecteur (10) s'étend axialement jusqu'à une bride de serrage (29) disposée en dessous d'un arbre à cames (6) transversalement à l'axe central du porte-injecteur (10), présente à sa face frontale supérieure (15) un bossage-raccord sphérique à partir du centre duquel un canal de refoulement (17) mène vers la buse d'injection (11) et à partir de la zone périphérique (21) duquel un canal de fuite (20) mène dans une zone de fuite, que la bride de serrage (29) s'appuie par un cône d'étanchéité disposé entre ses extrémités sur le bossage-raccord sphérique du porte-injecteur (10), par l'une de ses zones d'extrémité dans une ouverture de réception (28) ménagée latéralement sur la culasse (1), et par son autre zone d'extrémité par l'intermédiaire d'une vis de serrage (31) sur la culasse (1), qu'un canal de refoulement (30) et un canal de fuite (40) mènent l'un du centre du cône d'étanchéité et l'autre de la zone périphérique (21) du cône d'étanchéité dans la zone d'une face frontale de la bride de serrage (29), que la zone périphérique (21) entre le bossage-raccord sphérique du porte-injecteur (10) et le cône d'étanchéité de la bride de serrage (29) est délimitée vers l'extérieur par un joint élastique (41) et que, dans la zone de la face frontale (35) de la bride de serrage (29), le canal de refoulement (33) est relié à la conduite d'injection (39) et le canal de fuite (40) est relié à une conduite collectrice.
EP94108021A 1993-06-03 1994-05-25 Dispositif de fixation pour une soupape d'injection de combustible d'un moteur diesel Expired - Lifetime EP0627553B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4318434A DE4318434A1 (de) 1993-06-03 1993-06-03 Haltevorrichtung für ein Kraftstoffeinspritzventil eines Dieselmotors
DE4318434 1993-06-03

Publications (2)

Publication Number Publication Date
EP0627553A1 EP0627553A1 (fr) 1994-12-07
EP0627553B1 true EP0627553B1 (fr) 1997-02-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP94108021A Expired - Lifetime EP0627553B1 (fr) 1993-06-03 1994-05-25 Dispositif de fixation pour une soupape d'injection de combustible d'un moteur diesel

Country Status (3)

Country Link
EP (1) EP0627553B1 (fr)
DE (3) DE4318434A1 (fr)
ES (1) ES2097574T3 (fr)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE164919T1 (de) * 1994-03-12 1998-04-15 Opel Adam Ag Zylinderkopfanordnung eines dieselmotors mit einer haltevorrichtung für ein kraftstoffeinspritzventil sowie einer halterung für eine auf dieses wirkende einzeleinspritzpumpe
US5775303A (en) * 1995-06-30 1998-07-07 Cummins Engine Company, Inc. High Pressure Fuel Line Connection
DE19543506C2 (de) * 1995-11-22 1998-04-09 Man Nutzfahrzeuge Ag Anschluß einer Einspritzleitung an ein Einspritzventil
DE19608572A1 (de) * 1996-03-06 1997-09-11 Bosch Gmbh Robert Kraftstoffzuleitungseinrichtung
FR2763379B1 (fr) * 1997-05-16 1999-07-16 Renault Bride de fixation d'un injecteur
DE19741532B4 (de) * 1997-09-20 2008-12-24 Volkswagen Ag Kraftstoffeinspritzanlage
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DE4318434A1 (de) 1994-12-08
EP0627553A1 (fr) 1994-12-07
ES2097574T3 (es) 1997-04-01
DE59401789D1 (de) 1997-03-27
DE4408385A1 (de) 1995-09-14

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