EP3144518B1 - Anordnung für die montage eines einspritzventils auf einem zylinderkopf durch elastische einpassung in einen befestigungsflansch - Google Patents

Anordnung für die montage eines einspritzventils auf einem zylinderkopf durch elastische einpassung in einen befestigungsflansch Download PDF

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Publication number
EP3144518B1
EP3144518B1 EP16187166.0A EP16187166A EP3144518B1 EP 3144518 B1 EP3144518 B1 EP 3144518B1 EP 16187166 A EP16187166 A EP 16187166A EP 3144518 B1 EP3144518 B1 EP 3144518B1
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EP
European Patent Office
Prior art keywords
cylinder head
injector
clamp
arrangement according
flange
Prior art date
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Application number
EP16187166.0A
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English (en)
French (fr)
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EP3144518A1 (de
Inventor
Etienne De Malet
Jean-François Moulin
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Renault SAS
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Renault SAS
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Publication of EP3144518B1 publication Critical patent/EP3144518B1/de
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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
    • 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
    • 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
    • F02M2200/851—Mounting of fuel injection apparatus provisions for adjusting the angular, rotational or axial position 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
    • 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
    • F02M2200/855—Mounting of fuel injection apparatus using clamp elements or fastening means, e.g. bolts or screws

Definitions

  • the invention relates to an arrangement for mounting an injector on a cylinder head of a heat engine of a motor vehicle.
  • the publications CN204493052 U , KR100527700 B1 and CN204493051 U show arrangements for mounting an injector on a cylinder head of a heat engine of a motor vehicle.
  • an injector generally has a generally cylindrical shape elongated along a main axis.
  • the injector can also be arranged in a cylindrical injector holder.
  • injector will refer to a single injector or to an assembly formed by the injector and the injector holder, where appropriate.
  • the injector has a first lower section which is intended to extend inside the cylinder head to a free lower end.
  • the free lower end has an injection nozzle which opens into the combustion chamber of the heat engine.
  • the nozzle is controlled to release one or more jets of fuel into the combustion chamber. It is common for fuel jets to be emitted with an inclination relative to the axis of the injector.
  • the injector also has a second upper section which is intended to extend above the upper face of the cylinder head of the heat engine.
  • This second section includes connection means with fuel supply and return pipes. It also has electrical connectors for controlling the injector.
  • the flange is mounted on the injector by transverse engagement in the lateral notches.
  • the lower section of the injector thus equipped with the flange is then inserted into a well of the cylinder head.
  • the flange is fixed to the cylinder head, generally by means of a screw with an axis parallel to that of the injector.
  • the engine compartments are increasingly congested.
  • the cylinder head of the engine has an increasingly compact upper face.
  • the various components carried by the cylinder head, in particular the camshafts, must therefore be housed in an increasingly reduced space.
  • the injectors have a length such that the upper section of the injector protrudes above the cylinder head cover by means of an insertion hole.
  • the insertion orifice has a diameter substantially equal to the diameter of the lower section of the injector, and a seal is arranged between the cylinder head cover and the injector.
  • the upper section of the injectors has a larger overall diameter than the lower section. The injector must therefore be inserted into the cylinder head well after positioning the cylinder head cover by passing through the insertion hole.
  • the fixing flanges of the injectors are preferably fixed to the cylinder head, either directly or by means of a shaft support. cams which is itself fixed flat against the top face of the cylinder head. Fixing the flanges to the cylinder head cover would not make it possible to obtain a sufficiently precise hold in position because the cylinder head cover is generally formed by a thin sheet or plastic plate which is liable to vibrate relative to the cylinder head during the engine operation.
  • the fixing flanges being positioned on the cylinder head before positioning the cylinder head cover, they are difficult to access when inserting the injector into the well. It is then impossible to fit the fork of the flange on the injector.
  • the invention provides an arrangement for fixing an injector to a cylinder head cover when the flange is inaccessible when the injector is inserted into the cylinder head well.
  • the invention naturally makes it possible to resolve other technical problems, in particular if it is desired to change the order of the injector mounting operations, for example to simplify the mass production of heat engines.
  • the invention provides an arrangement according to claim 1.
  • a cylinder head 10 of a motor vehicle heat engine which is intended to be fixed against a horizontal upper face of a cylinder block (not shown) to close at least one longitudinal row of 12 combustion chambers.
  • the upper part of a combustion chamber 12 is notably visible to the figures 2 and 3 .
  • Each combustion chamber 12 in a row has a cylindrical shape with a vertical "A" axis.
  • the axes "A" of the combustion chambers 12 of a row are aligned in the same vertical longitudinal plane which will hereinafter be called “alignment plane P".
  • the cylinder head 10 has a planar upper face 14 which is hollowed out with various cavities to receive several parts such as intake valves and exhaust valves (not shown).
  • the upper face 14 of the cylinder head 10 is also intended to support two camshafts 16 of longitudinal "B" axis which extend symmetrically on either side of the "P" plane of alignment as shown in Figure figure 4 .
  • the camshafts 16 are mounted to rotate about their axis "B" on the cylinder head 10 by means of a support 18, sometimes designated by the term "beam". As shown in the figure 5 , this support 18 is in the form of a rectangular horizontal plate thick enough to have high rigidity. The support 18 is thus delimited vertically by a lower horizontal face 20 and by an upper horizontal face 22.
  • the alignment plane “P" here intersects the support 18 along its median longitudinal axis.
  • the support 18 comprises bearings (not shown) to receive the two camshafts 16 in rotation.
  • the support 18 further has recesses which allow valve stems (not shown) to come into contact with the cams of the camshaft 16 via pawls.
  • the lower face 20 of the support 18 is pressed against the upper face 14 of the cylinder head 10.
  • the support 18 thus positioned is rigidly fixed with the cylinder head 10.
  • the upper horizontal face 22 of the support 18 is fixed. perfectly fixed relative to the upper face 14 of the cylinder head 10 over its entire surface.
  • a component fixed against the upper face 22 of the support 18 remains positioned perfectly fixed relative to the cylinder head 10 even during operation of the engine.
  • a cylinder head cover 24 covers the upper face 22 of the support 18, as illustrated in figures 1 and 4 .
  • the cylinder head cover 24 is in the form of a thin sheet of which two longitudinal edges 26 are curved downwards so as to come into contact with the upper face 22 of the support while the central part of the cylinder head cover 24 is arranged at a distance above the upper face 22 of the support 18 to enable the two camshafts 16 to be housed in a free space reserved between the cylinder head 10 and the cylinder head cover 24.
  • the cylinder head cover 24 is thus fixed to the support 18 via its two longitudinal edges 26.
  • the central part of the cylinder head cover 24 is arranged at a distance above the cylinder head. It is therefore subject to vibrations relative to the cylinder head 10 when the engine is in operation.
  • the injector 28 shown in figures 2 and 3 has a generally cylindrical shape with a vertical main axis.
  • the injector 28 is intended to be arranged coaxially with the axis "A" of the associated chamber 12. It comprises a first section 30 of the lower injection end which is intended to be arranged under the cylinder head cover 24 and a second end section 32 upper which is intended to be arranged above the cylinder head cover 24.
  • the lower section 30 has a fuel injection nozzle 34 at its free lower end.
  • the lower section 30 has a stepped shape from its free lower end to its larger upper end of maximum diameter "D1".
  • a lower part of this section 30 is intended to be inserted into a well 36 of the cylinder head 10 until a lower shoulder 38 bears axially against a seat 40 of the well 36.
  • the well 36 extends upwards. so as to pass through the support 18.
  • a washer is generally interposed between the shoulder 38 and the seat 40 to allow the height adjustment of the jets and to guarantee the seal.
  • the upper section 32 of the injector 28 has a larger radial size than the lower section 30.
  • This upper section 32 comprises means for connection with a reserve of pressurized fuel as well as electrical connectors to allow the control of the emission of the fuel jets.
  • the cylinder head cover 24 has an insertion orifice 41 of complementary shape to an upper end part of the lower section 30.
  • a seal is interposed radially between the lower section 30 and the cylinder head cover 24 to ensure the sealing of the space delimited between the cylinder head cover 24 and the cylinder head 10.
  • the upper section 32 and the lower section 30 cannot be dismantled with respect to each other or at least they must be mounted together prior to mounting the injector 28 on the cylinder head 10. Due to the radial size of the section 32 greater than the diameter of the insertion orifice 41, the injector 28 is necessarily inserted vertically into the well 36 after the cylinder head cover 24 has been positioned.
  • the injector 28 must be held firmly relative to the cylinder head 10 to prevent it from lifting from its seat 40 in reaction to the emission of a fuel jet and / or to the pressure exerted in operation. in the combustion chamber. Further, the injector 28 must also be angularly indexed so that the fuel jets are emitted in a predetermined direction.
  • the lower injection section 30 comprises an upper fixing portion comprising at least two lateral notches 42 opposite transversely, as illustrated in FIGS. figures 2 and 5 .
  • Each notch 42 is formed by a longitudinal groove, the bottom 44 of which forms a flat.
  • Each notch 42 is delimited vertically by a lower horizontal face 46 and by an upper horizontal face 48.
  • a fixing flange 50 is intended to cooperate with these notches 42 in order to hold and index the injector 28.
  • a flange 50 is in particular visible to figures 6 and 7 .
  • the flange 50 has a first front part in the form of a rigid fork 52.
  • the fork 52 has a horizontal section in the shape of a "U" whose opening is directed longitudinally forward.
  • the fork 52 thus comprises two longitudinal arms 54, the rear ends of which are linked by a half-ring 56.
  • the two longitudinal arms 54 of the fork 52 are spaced transversely by a distance greater than the largest diameter "D1" of the lower section 30 of the injector 28 so that said lower section 30 is able to slide axially between the arms 54.
  • the flange 50 also comprises a rear fixing part 58 which has the shape of a longitudinal sleeve which extends rearwardly from the half-ring 56.
  • This fixing part 58 is intended to be fixed to the cylinder head 10 by means of a single screw 60 with a vertical axis which is illustrated in figures 3 and 4 .
  • the fixing part 58 is crossed by an orifice 62 for the passage of the screw 60.
  • the flange 50 is arranged on the upper face 22 of the support 18 so that the fork 52 is in coincidence with the well 36.
  • a bore 63 is made through the support 18 and in the cylinder head 10 to receive the screw 60 for fixing the cylinder head. the flange 50.
  • two retaining elements 66 are each mounted to slide transversely in an associated arm 54. Each retaining element 66 is intended to be inserted into an associated lateral notch 42 to maintain the injector 28 vertically in position against its seat 40, as shown in figure 2 .
  • the two retaining elements 66 are identical by symmetry with respect to a median longitudinal vertical plane of the flange 50. Each retaining element 66 comprises a free internal transverse end 65 which is turned towards the injector 28.
  • each arm 54 has in its internal face 67 turned towards the opposite arm 54, a housing 68.
  • each housing 68 crosses transversely. the arm 54 to open into the outer face 70 of the arm.
  • the housing 68 here has a cylindrical shape with a transverse axis.
  • the two retaining elements 66 are mounted to slide transversely between a separated position (not shown) in which they are separated by a distance greater than the largest diameter "D1" of the injection section and a close position, illustrated in figures 2 , 6 , 7 and 8 , to which they are elastically recalled and in which each retaining element 66 is capable of being fitted transversely in the associated lateral notch 42.
  • each holding element 66 is here retracted transversely at least in part inside the housing 68, while in the close position, the holding elements 66 extend towards each other in projection transversely with respect to the associated arm 54.
  • each housing 68 has, at its internal mouth which opens into the internal face 67 of the arm, a flange 72 which reduces the section of the cylindrical housing 68. As shown in the figure 8 , an external transverse face of this rim 72 is intended to stop the associated retaining element 66 in the close position by cooperation with an associated abutment face 74 of the retaining element 66.
  • the retaining elements 66 are inserted into the associated housing 68 by its external mouth which opens into the outer face 70 of the arm 54.
  • a closing screw 76 closes the outer mouth of the housing 68.
  • the elastic return of the retaining elements 66 towards their close position is here achieved by interposing an elastic member in the housing 68 between the closing screw 76 and the associated retaining element 66.
  • the elastic member is here formed by a spring 80 mounted pre-stressed in compression. The prestressing force can advantageously be adjusted by acting on the closing screw 76.
  • each retaining element 66 is bevelled so as to form a ramp 82 directed vertically upwards.
  • This ramp 82 automatically controls the sliding of the retaining elements 66 towards their separated position by contact with the injector 28 during the vertical insertion downwards of the injection section 30 between the arms 54.
  • the retaining elements 66 thus operate in the manner of a door latch bolt. swinging.
  • Each retaining element 66 and the associated housing 68 generally have a cylindrical shape of revolution. To ensure that the ramp 82 is always oriented upwards, there is provided means for locking the element 66 in rotation relative to its housing 68.
  • the element 66 of holding is provided with a transverse groove 83 in its cylindrical face, here facing downwards, as illustrated in figure 9 .
  • a pin 84 is arranged so as to emerge vertically protruding from an inner cylindrical face of the housing 68 in order to penetrate into the groove 83 to block the element 66 for maintaining it in rotation during its sliding.
  • each retaining element 66 has an internal end face 86 which extends longitudinally, here reduced to the cut of a longitudinal edge. , which is intended to be pressed over its entire length against the bottom of the notch 42 of the injector.
  • the flange 50 is intended to be held in position by the loose screw 60 thus allowing limited pivoting of the flange 50 on the cylinder head 10. This makes it possible to facilitate the insertion of the injector 28 into the flange 50 and make up for any faulty positioning of the flange, in particular a fault in perpendicularity.
  • the upper periphery of the passage orifice 62 advantageously has the shape of a concave bowl 88. while a compensation washer 90 having a lower face of complementary convex shape. The washer 90 is interposed between the head of the fixing screw 60 and the flange 50 so that its convex face is received in the cup 88.
  • an elastic return member 92 is interposed between the yoke 10 and the fork 52.
  • This is a cylindrical spring which is arranged around the well 36 and which has a diameter greater than that of the lower section of the injector 28.
  • This spring is for example inserted into a counterbore 94 which is produced around the well 36 and which opens into the upper face of the support 18. This counterbore 94 keeps the spring 92 in position.
  • the elastic return member 92 also makes it possible to prevent sagging of the flange 50 during the insertion of the injector 28.
  • the retaining elements 66 When mounting the fixing flange 50, the retaining elements 66 are first of all inserted into their associated housing 68 through the external mouth. Then, the spring 80 is inserted into the housing 68 in the same way. Finally, the closing screws 76 are screwed to plug the external mouth of the housing, while allowing the springs 80 to be pre-stressed so as to elastically return the retaining elements 66 to their close position.
  • the elastic return member 92 is inserted into the counterbore 94. Then, the flange 50 is positioned longitudinally between the two camshafts 16 so that the fork 52 is in coincidence. with the well 36 and so that the passage orifice 62 is in coincidence with the bore 63. The elastic return member 92 is thus interposed between the fork 52 and the cylinder head 10.
  • the fixing screw 60 is inserted into the passage opening 62 and screwed into the bore 63, without however being tightened so as to allow the limited pivoting of the flange 50 relative to the cylinder head 10. This will subsequently facilitate the insertion of the injector 28 into the well 36.
  • a third step “E3” for mounting the cylinder head cover 24 is initiated.
  • the cylinder head cover 24 is positioned and fixed to the cylinder head 10 by covering the flange 50 as well as the camshafts 16.
  • a fourth step “E4” for inserting the injector 28 is carried out.
  • the lower section 30 of the injector 28 is inserted vertically downwards into the hole 41 for inserting the cylinder head cover 24.
  • the lower section 30 then passes between the arms 54 of the fork 52 in pressing the ramp 84 of the retaining elements 66. This automatically causes the sliding of the holding elements 66 towards their separated position against the elastic return force allowing the insertion of the injector 28 between the arms 54 of the fork 52 to continue.
  • the insertion continues until the injector 28 is resting on its seat 40.
  • the fork 52 is simultaneously pushed upwards to its fixing position by the spring 92.
  • the side notches 42 of the injector 28 are then at the level of the retaining elements 66 and the retaining elements 66 are then free to be fitted elastically in the lateral notches 42.
  • the fixing screw 60 is tightened to rigidly fix the flange 50 on the cylinder head 10.
  • an access passage 96 is provided in the cylinder head cover 24 for inserting a tool such as a torque wrench.
  • the access passage 96 is plugged with a plug 98 in a sealed manner during a sixth plugging step “E6”.
  • Each retaining element 66 comprises a lower horizontal stop face 100 which blocks the upward vertical sliding of the injector 28 by cooperation with the lower face 46 of the lateral notch 42 to keep the injector 28 resting against its seat. 40. The injector 28 can therefore no longer be withdrawn vertically.
  • planar face 86 at the end of the retaining element 66 makes it possible to prevent the rotation of the injector 28 about its axis "A".
  • the fixing screw 60 is completely unscrewed by passing a tool through the passage 96 for accessing the cylinder head cover 24. Then the cylinder head cover 24 is itself removed. The assembly formed by the cylinder head cover 24, the flange 50 and the injector 28 is then withdrawn from the cylinder head 10. An operator can then access the flange 50 thus making it possible to remove it by sliding longitudinally relative to the injector. 28.
  • the injector 28 can then be extracted from the orifice 41 for inserting the cylinder head cover 24 by vertical sliding upwards.
  • the arrangement made according to the state of the art thus makes it possible to position the flange 50 on the cylinder head 10 before the injector 28 is inserted into the well 36. This allows in particular to easily fix the injector 28 when the flange 50 is not accessible.

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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)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Claims (10)

  1. Anordnung zur Montage einer Einspritzdüse (28) auf einem Zylinderkopf (10) einer Brennkraftmaschine eines Kraftfahrzeugs, wobei die Einspritzdüse (28) eine vertikale Hauptachse (A) aufweist und einen unteren Einspritz-Endabschnitt (30) umfasst, der dazu bestimmt ist, in einen Schacht (36) des Zylinderkopfes (10) eingeführt zu sein, der Einspritzabschnitt (30) aufweisend mindestens zwei seitliche Rillen (42), die in Querrichtung entgegengesetzt verlaufen, die Anordnung aufweisend einen Befestigungsflansch (50), der Folgendes aufweist:
    - einen Befestigungsabschnitt (58), der dazu bestimmt ist, am Zylinderkopf (10) befestigt zu sein,
    - zwei Halteelemente (66) rotationszylindrischer Form, die dazu bestimmt sind, in die seitlichen Rillen (42) eingeführt zu sein, um die Einspritzdüse (28) vertikal in dem Schacht (36) zu halten,
    - eine starre Gabel (52), die zwei Längsarme (54) aufweist, die in Querrichtung gespreizt sind, zwischen denen der Einspritzabschnitt (30) axial gleiten kann, wo die zwei Halteelemente (66) in Querrichtung zwischen einer gespreizten Position, in der sie um einen Abstand größer als der größte Durchmesser (D1) des Einspritzabschnitts (30) gespreizt sind, und einer angenäherten Position, in die sie elastisch zurückgeholt werden, und in der jedes Halteelement (66) quer in die zugehörige seitliche Rille (42) eingepasst werden kann, beweglich gelagert sind, dadurch gekennzeichnet, dass jedes Halteelement (66) in Querrichtung in einem zugehörigen Arm (54) gleitend gelagert ist und eine rampenförmige Seite (82) aufweist, die axial nach oben gerichtet ist, so dass der Einspritzabschnitt (30) zwischen den Armen (54) bei seiner vertikalen Einführung in den Schacht (36) auf Rampen (82) der Halteelemente (66) drückt, um sie zu ihrer gespreizten Position gleiten zu lassen.
  2. Anordnung nach Anspruch 1, dadurch gekennzeichnet, dass die Halteelemente (66) eine untere Anschlagseite (100) aufweisen, die das vertikale Gleiten zum oberen Bereich der Einspritzdüse (28) bezogen auf den Flansch (50) blockiert, wenn die Halteelemente (66) in die seitlichen Rillen (42) eingefügt sind.
  3. Anordnung nach einem der Ansprüche 1 oder 2, dadurch gekennzeichnet, dass jedes Halteelement (66) eine freie ebene Endseite (86) aufweist, die sich in Längsrichtung erstreckt, um die Drehung der Einspritzdüse (28) durch Kontakt mit einem ebenen Boden (44) der Rille (42) zu blockieren.
  4. Anordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Halteabschnitt (58) des Flansches (50) geeignet ist, mittels einer Schraube (60) mit vertikaler Achse auf dem Zylinderkopf (10) befestigt zu sein.
  5. Anordnung nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass eine Kugelgelenk-Ausgleichsscheibe (90) zwischen einem Kopf der Schraube (60) und dem Flansch (50) eingefügt ist, um ein Schwenken des Flansches (50) bezogen auf den Zylinderkopf (10) zu gestatten, wenn die Schraube (60) nicht festgezogen ist, insbesondere um die Korrektur eines Fehlers der senkrechten Ausrichtung zu gestatten.
  6. Anordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass ein elastisches Rückholelement (92), das mit Druck arbeitet, zwischen der Gabel (52) des Flansches (50) und dem Zylinderkopf (10) eingefügt ist, um einen Halt mit begrenzter Bewegung des Flansches (50) in Position auf dem Zylinderkopf (10) vor der Befestigung des Flansches (50) auf dem Zylinderkopf (10) zu gestatten.
  7. Anordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass eine Zylinderkopfhaube (24) über dem Zylinderkopf (10) angeordnet ist, wobei der Flansch (50) zwischen dem Zylinderkopf (10) und der Zylinderkopfhaube (24) eingefügt ist, wobei die Zylinderkopfhaube (24) eine Öffnung (41) zur Einführung der Einspritzdüse aufweist, die deckungsgleich mit dem Schacht (36) angeordnet ist.
  8. Anordnung nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die Zylinderkopfhaube (24) einen Durchgang (96) zum Zugang zu dem Befestigungsabschnitt (58) des Flansches (50) aufweist.
  9. Anordnung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Flansch (50) mittels eines Trägers (18) für Nockenwellen (16), der selbst direkt auf dem Zylinderkopf (10) befestigt ist, auf dem Zylinderkopf befestigt ist.
  10. Verfahren zur Befestigung einer Einspritzdüse (28) auf einem Zylinderkopf (10) unter Verwendung der Anordnung nach Anspruch 9 in Kombination mit den Ansprüchen 4 bis 6, dadurch gekennzeichnet, dass es nacheinander die folgenden Schritte aufweist:
    - einen ersten Schritt (E1) des Positionierens des Flansches (50) auf dem Zylinderkopf (10) mit Einfügung des elastischen Rückholelements (92) zwischen die Gabel (52) und den Zylinderkopf (10);
    - einen zweiten Schritt (E2) des Inpositionhaltens des Flansches (50) mittels einer nicht festgezogenen Schraube (60), um ein begrenztes Schwenken des Flansches (50) bezogen auf den Zylinderkopf (10) beizubehalten;
    - einen dritten Schritt (E3) des Montierens der Zylinderkopfhaube (24) auf den Zylinderkopf (10);
    - einen vierten Schritt (E4) des Einführens des Einspritzabschnitts (30) in die Einführungsöffnung (41) der Zylinderkopfhaube (24) und in den Schacht (36) des Zylinderkopfes (10) bis zur elastischen Einpassung der Halteelemente (66) in die seitlichen Rillen (42);
    - einen fünften Schritt (E5) des starren Befestigens des Flansches (50) auf dem Zylinderkopf (10), der darin besteht, die Schraube (60) festzuziehen, wobei ein geeignetes Werkzeug durch den Zugangsdurchgang (96) hindurchgeführt wird;
    - einen sechsten Schritt (E6) des Verschließens, bei dem der Zugangsdurchgang (96) mit einem Stopfen (98) wieder dicht verschlossen wird.
EP16187166.0A 2015-09-17 2016-09-05 Anordnung für die montage eines einspritzventils auf einem zylinderkopf durch elastische einpassung in einen befestigungsflansch Active EP3144518B1 (de)

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FR1558738A FR3041386B1 (fr) 2015-09-17 2015-09-17 "agencement pour le montage d'un injecteur sur une culasse par emboitement elastique dans une bride de fixation"

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US11608804B1 (en) * 2021-08-25 2023-03-21 Caterpillar Inc. Fuel injector having side-fitted fuel connector for tight packaging in top-feed fuel system
US11644000B2 (en) 2021-08-25 2023-05-09 Caterpillar Inc. Fuel injector clamp assembly for offset clamping bolt and cylinder head assembly with same
GB2621889A (en) * 2022-08-26 2024-02-28 Borgwarner Luxembourg Operations Fuel pump assembly

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JP3846436B2 (ja) * 2003-03-10 2006-11-15 マツダ株式会社 直噴ディーゼルエンジンのシリンダヘッド部構造
FR2904059B1 (fr) * 2006-07-21 2010-06-18 Peugeot Citroen Automobiles Sa Fourchette de maintien d'un porte-injecteur de moteur thermique.
CN204493052U (zh) * 2015-02-10 2015-07-22 临海市伟达汽车部件有限公司 一种柴油机用喷油器压板
CN204493051U (zh) * 2015-02-10 2015-07-22 临海市伟达汽车部件有限公司 一种喷油器压块

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FR3041386A1 (fr) 2017-03-24
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