EP2841761B1 - Arrangement with a fuel distributer and multiple fuel injection valves - Google Patents

Arrangement with a fuel distributer and multiple fuel injection valves Download PDF

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Publication number
EP2841761B1
EP2841761B1 EP13715934.9A EP13715934A EP2841761B1 EP 2841761 B1 EP2841761 B1 EP 2841761B1 EP 13715934 A EP13715934 A EP 13715934A EP 2841761 B1 EP2841761 B1 EP 2841761B1
Authority
EP
European Patent Office
Prior art keywords
fuel injection
cup
damping
injection valve
fuel
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.)
Active
Application number
EP13715934.9A
Other languages
German (de)
French (fr)
Other versions
EP2841761A1 (en
Inventor
Jens Pohlmann
Michael Fischer
Martin Riemer
Markus Friedrich
Andreas Rehwald
Michael Mayer
Dietmar Uhlenbrock
Venkatesh Kannan
Matthias Maess
Goekhan Guengoer
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP2841761A1 publication Critical patent/EP2841761A1/en
Application granted granted Critical
Publication of EP2841761B1 publication Critical patent/EP2841761B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F02M55/04—Means for damping vibrations or pressure fluctuations in injection pump inlets or outlets
    • 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
    • F02M55/025—Common rails
    • 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
    • F02M2200/09—Fuel-injection apparatus having means for reducing noise
    • 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
    • F02M2200/8023—Fuel injection apparatus manufacture, repair or assembly the assembly involving use of quick-acting mechanisms, 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
    • F02M2200/80—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
    • F02M2200/853—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, in particular a fuel injection system for high-pressure injection in internal combustion engines, with a fuel distributor and a plurality of fuel injection valves.
  • a fuel rail with multiple fuel injection valves known.
  • a collar is placed around a puncture on the respective fuel injection valve, wherein tongues are configured on the collar.
  • An injector port on the fuel rail has a cylindrical body into which the upper end of the fuel injector is joined.
  • a headband is fitted over the cylindrical body, wherein recesses in the headband cooperate with the tongues of the collar.
  • the from the EP 2 151 572 A2 known embodiment has the disadvantage that the fuel rail is excited in operation to oscillations in the audible frequency range. This happens mainly due to noise sources in the fuel injection valves.
  • the structure-borne sound propagates from the fuel injection valves via the cylindrical bodies of the injector connections, the fuel distributor rail and rail holder or the like onto the mounting structure, from where disturbing noises are emitted. Under certain circumstances, these disturbing noises can even penetrate into the interior of the vehicle.
  • the cylinder head can serve.
  • the arrangement according to the invention with the features of claim 1 has the advantage that a vibration control decoupling or damping between the fuel injection valves and the fuel distributor is made possible. Specifically, there is the advantage that occurring noise emissions can be reduced.
  • the arrangement is suitable for internal combustion engines for gasoline direct injection.
  • the fuel distributor can in this case be configured in particular as a fuel distributor strip.
  • the fuel distributor can serve for distributing the fuel to a plurality of fuel injection valves, in particular high-pressure injection valves.
  • the fuel distributor can serve as a common fuel storage for the fuel injection valves.
  • the fuel injection valves are connected to the fuel distributor and inject the fuel required for the combustion process under high pressure, preferably directly into the combustion chambers of the internal combustion engine.
  • the fuel is in this case compressed via a high-pressure pump and quantity-controlled conveyed via a high-pressure line in the fuel distributor.
  • the attachment of the fuel distributor to a mounting structure, in particular a cylinder head of the internal combustion engine, can be done directly or else via spacers and optionally further connecting elements.
  • the fuel injectors may be attached to the cups as suspended fuel injectors.
  • the holding element for the connection can in this case form a latching connection on the one hand with the cup and on the other hand with the fuel injection valve.
  • a part-annular shoulder of the cup may be configured in the form of a nose or a collar. Accordingly, a collar is provided on the fuel injection valve in an advantageous manner.
  • the retaining element fulfills the function that the relative deflection of the fuel injection valve relative to the associated cup under the action of operating forces remains below a defined limit, whereby, for example, an O-ring seal or a Teflon-ring seal are protected from damage and wear.
  • the contact surface of the cup and the contact surface of the fuel injection valve are remote from each other. Furthermore, it is advantageous that the contact surface of the cup and the support surface of the cup are remote from each other.
  • the retaining clip can be configured in an advantageous manner as a U-shaped retaining clip. During assembly, the retaining clip can then be clipped onto the cup and fuel injector inserted into the cup, as it were. As a result, a reliable connection is formed, wherein the assembly can be carried out in a simple manner.
  • an at least partially annular shoulder of the cup is designed on the outside of the cup, on which the contact surface of the cup is designed.
  • the at least partially annular paragraph may be configured as an annular paragraph or as a part-annular paragraph. Accordingly, it is advantageous that on the fuel injection valve, an at least partially annular collar is configured, on which the contact surface of the fuel injection valve and a support surface of the cup facing support surface are configured.
  • the at least partially annular collar can be configured as a partial annular collar or as an annular collar.
  • a partial ring-shaped embodiment of the paragraph of the cup or the Federal of the fuel injection valve also several paragraphs or frets may be provided on which a plurality of retaining clips are attached. The number of retaining elements designed as retaining clips, which fasten a fuel injection valve to an associated cup of the fuel distributor, can be selected with reference to the respective application.
  • At least one of the damping composite elements has a bent outer portion which engages around an outer side of the federal government. As a result, contact between the outside of the collar and the retaining clip is reliably prevented. Accordingly, it is advantageous that at least one of the damping composite elements is designed as an at least approximately planar damping composite element and projects beyond an outside of the collar. This guarantees a certain distance between the retaining clip and the outside of the collar.
  • At least one of the damping composite elements is configured as a ring-shaped or partially annular damping composite element.
  • a homogeneous loading of the damping composite element can be achieved.
  • Particularly advantageous in this regard is an annular configuration of the damping composite elements. If this is not possible, for example for assembly reasons, to circumvent a plug, for example, then a part-circular contour, for example in the form of a C-ring, can be selected.
  • the damping composite element between the support surface of the fuel injection valve and the support surface of the cup is arranged. It is also advantageous that a first damping composite element between the fuel injection valve and the support surface of the cup is arranged and that a second damping composite element between the contact surface of the fuel injection valve and the retaining clip is arranged.
  • a direct contact of metal on metal is avoided by always a damping composite element is interposed in the mechanical power transmission path. This results in a particularly effective vibration damping.
  • the retaining clip is configured from a composite element with at least one metallic metal layer and at least one damping layer.
  • the retaining clip can then be made by reshaping the composite sheet.
  • the composite metal sheet may, for example, have a layer structure of two metal layers and an elastically deformable layer located therebetween, in particular an elastomer layer.
  • the structure for vibration decoupling may possibly also be simplified, the retaining clip formed from the composite sheet permitting the insulation effect by virtue of its inherent component damping.
  • the retaining clip may also be formed of a rigid material.
  • the damping composite element is advantageously configured from at least one metal layer and at least one damping layer. Numerous variants are conceivable here, which differ among other things in the number of layers.
  • Fig. 1 shows an arrangement 1 with a fuel distributor 2 and a plurality of fuel injection valves 3, 4.
  • the fuel distributor 2 may be configured in particular as a fuel distributor rail.
  • the fuel distributor 2 serves to store high-pressure fuel and to distribute the fuel to the plurality of fuel injection valves 3, 4. For simplicity of illustration, only two fuel injection valves 3, 4 are shown in this embodiment.
  • the number of fuel injection valves 3, 4 connected to the fuel distributor 2 depends on the number of cylinders of the internal combustion engine.
  • the fuel distributor 2 is suitably connected to a mounting structure 5, in particular a cylinder head 5.
  • the connection of the fuel distributor 2 can also be made via spacers or via further connecting elements 6, 7.
  • a high pressure line 8 is provided with the the fuel distributor 2 is connected.
  • the high-pressure line 8 serves to supply high-pressure fuel into the fuel distributor 2.
  • Fig. 1 shows a schematic arrangement in which the damping composite elements 11, 12 are connected between the fuel injection valves 3, 4 and the associated cups 9, 10.
  • the configuration of the decoupling and the connection between the fuel injection valves 3, 4 and the associated cup 9, 10 is based on the Fig. 2 described in more detail.
  • Fig. 2 shows the fuel injection valve 3 and the cup 9 of the fuel distributor 2 in Fig. 1 illustrated arrangement 1 according to the first embodiment in a partial, schematic sectional view.
  • the fuel injection valve 3 has a longitudinal axis 15.
  • the cup 9 has an underside 16, which forms a support surface 17 in this embodiment.
  • the support surface 17 may also be configured in other ways on the bottom 16.
  • a contact surface 21 is designed, which is oriented perpendicular to the longitudinal axis 15 in this embodiment.
  • the contact surface 19 of the cup 9 and the contact surface 21 of the fuel injection valve 3 are remote from each other.
  • a ring-shaped or partially annular shoulder 22 of the cup 9 is configured, on which the contact surface 19 of the cup 9 is configured.
  • an annular or partially annular collar 23 is configured on the fuel injection valve 3, on which the contact surface 21 of the fuel injection valve 3 is configured.
  • a support surface is also configured.
  • the support surface 17 of the cup 9 and the support surface 24 of the fuel injection valve 3 are each oriented perpendicular to the longitudinal axis 15 in this embodiment. Further, the support surface 17 of the cup 9 and the support surface 24 of the fuel injection valve 3 face each other.
  • the damping composite element 11 is arranged between the support surface 17 of the cup 9 and the support surface 24 of the fuel injection valve 3, the damping composite element 11 is arranged.
  • the damping composite element 11 is in this embodiment as a flat Damping composite element 11 configured.
  • the damping composite element 11 has metal layers 25, 26, each based on a metallic material. Between the metal layers 25, 26 a damping layer 27 of the damping composite element 11 is provided.
  • the damping layer 27 may be made of a rubber, in particular a natural rubber or a synthetic rubber.
  • the damping layer 27 may in particular be connected to the metal layers 25, 26 by vulcanization. As a result, a multi-layered design of the damping composite element 11 is possible. Direct contact between the metal layers 25, 26 is thereby prevented by the damping layer 27.
  • the damping layer 27 is arranged, as also schematically with reference to Fig. 1 is shown.
  • the arrangement 1 also has a retaining element 30 configured as a retaining clip 30.
  • the retaining clip 30 is formed in this embodiment of a rigid material, in particular a metal.
  • the retaining clip 30 engages on the one hand the contact surface 19 of the cup 9 and on the other hand, the contact surface 21 of the fuel injection valve 3.
  • the retaining clip 30 acts on the collar 30 of the fuel injection valve 3 against the bottom 16 of the cup 9.
  • the retaining clip 30 can, for example, in a mounting direction 31 on the Paragraph 22 of the cup 9 and the collar 23 of the fuel injection valve 3 are clipped when the fuel injection valve 3 is partially joined in its end position in the cup 3.
  • a certain bias on the damping composite element 11 and thus the damping layer 27 are exercised.
  • an acoustic decoupling can be realized by the damping composite element 11.
  • the connection of the fuel injection valve 4 is configured with the fuel distributor 2.
  • Fig. 3 shows the in Fig. 2 shown section of an arrangement 1 according to a second embodiment of the invention.
  • a further damping composite element 13 is disposed between the abutment surface 21 of the collar 23 of the fuel injection valve 3 and the retaining clip 30.
  • the damping composite element 13 has a configuration corresponding to the damping composite element 11.
  • the damping composite element 13 comprises metal layers 35, 36 and a damping layer 37, which is arranged between the metal layers 35, 36.
  • contacts of metal on metal over which a structure-borne sound transmission is still possible, completely prevented.
  • there are no pure metal contacts and there is a full isolation in contrast to the basis of the Fig. 2 described second embodiment and between the retaining clip 30 and the collar 23, a damping composite element 13 is provided or inserted.
  • a first of the damping composite elements 11, 13, namely the damping composite element 11, disposed between the fuel injection valve 3 and the support surface 17 of the cup 9 and a second of the damping composite elements 11, 13, namely the damping composite element 13 is between the contact surface 21 of the Fuel injection valve 3 and the retaining clip 30 is arranged.
  • the two damping composite elements 11, 13 configured as a flat damping composite elements 13.
  • the damping composite elements 13 are in each case via an outer side 38 of the collar 23 of the fuel injection valve 3 via. As a result, a spacing of the retaining clip 30 is always ensured by the outer side 38 of the collar 23.
  • Fig. 4 shows the in Fig. 2 shown section of an arrangement 1 according to a third embodiment.
  • a damping composite element 11 between the support surface 24 of the collar 23 and the support surface 17 of the cup 9 is arranged.
  • the retaining clip 30 is made of a composite metal sheet with metal layers 39, 40 and an arranged between the metal layers 39, 40 damping layer 41.
  • the retaining clip 30 can be made directly from a flat composite sheet by forming.
  • the retaining clip 30 then allows inherent component damping to allow the isolation effect. As a result, an acoustically completely decoupled connection of the fuel injection valve 3 with the cup 9 of the fuel distributor 3 is possible.
  • Fig. 5 shows the in Fig. 2 shown section of an arrangement 1 according to a fourth embodiment.
  • the damping composite element 11 has a bent outer portion 42, which the Outside 38 of the collar 23 surrounds.
  • the damping composite element 13 on a bent outer portion 43 which engages around the outer side 38 of the collar 23.
  • the bent outer portions 42, 43 of the damping composite elements 11, 13 ensure a distance between the retaining clip 30 and the outer side 38 of the collar 23. Even with a direct concern of the retaining clip 30 on the bent outer portions 42, 43 of the damping composite elements 11, 13 and the bent outer sections 42, 43 on the outer side 38 of the collar 23 thus a radial decoupling between the fuel injection valve 3 and the retaining clip 30 is ensured. As a result, an acoustically completely decoupled connection between the fuel injection valve 3 and the cup 9 is ensured.
  • the damping composite elements 11, 12, 13 each have at least one metal layer 25, 26 and at least one damping layer 27.
  • a preferred embodiment consists of exactly two metal layers 25, 26 and an interposed damping layer 27.
  • the preferred embodiment is also in the embodiment of the retaining clip 30, as it is based on the Fig. 4 described is advantageous. Further possible embodiments of the damping composite elements 11, 12, 13 and / or the retaining clip 30 are described below with reference to FIG Fig. 6 to 8 described. In this case, suitable deformations, in particular suitable bends, are possible.
  • Fig. 6 shows a damping composite element 11 for in Fig. 1 illustrated arrangement 1 according to a fifth embodiment in a schematic sectional view.
  • the damping composite element 11 is formed of a metal layer 25 and a damping layer 27.
  • the damping layer 27, for example, the support surface 24 of the collar 23 or the support surface 17 of the cup 9 may be assigned.
  • Fig. 7 shows a damping composite element 11 according to a sixth embodiment in a schematic sectional view.
  • the damping composite element 11 is formed from a metal layer 25 and damping layers 27, 28.
  • the metal layer 25 is arranged in this embodiment between the damping layers 27, 28.
  • the damping layers 27, 28 serve as external damping layers 27, 28. In this way, an advantageous adaptation to the contact partners and optionally a tolerance compensation is possible.
  • Fig. 8 shows a damping composite element 11 according to a seventh embodiment in a schematic sectional view.
  • the damping composite element 11 consists of metal layers 25, 26 and damping layers 27, 28.
  • the damping layer 27 serves as the outer damping layer 27.
  • the metal layer 25 is arranged between the damping layers 27, 28 and serves as an inner metal layer 25.
  • the damping layer 28 is between the two Metal layer 25, 26 arranged and serves as an inner damping layer 28.
  • the metal layer 26 serves as an outer metal layer 26.
  • a multi-layered design of the retaining clip 30 can be realized. Furthermore, embodiments of the damping composite elements 11, 12, 13 and / or the retaining clip 30 of five or more layers are possible, with alternate metal and damping layers.
  • a partial or complete decoupling of the fuel injection valves 3, 4 from the fuel distributor 2 is possible. This results in a significant reduction in structure-borne sound transmission in the fuel distributor 2 and thus in the mounting structure 5 while fulfilling the functional and strength requirements.
  • a noise emission of the fuel distributor 2 thus decreases.
  • the damping layers 27, 28, 37, 41 may in particular be formed from an elastomer and be connected by vulcanization to the metal layers 25, 26, 35, 36, 39, 40. Specifically, a compound by vulcanization is possible. In addition, an inner damping layer 27, as shown inter alia on the basis of Fig. 4 is reliably protected against abrasion and other environmental influences.
  • the assembly effort is low because the damping composite elements 11, 12, 13 must be inserted only before the assembly of the fuel injection valves 3, 4 and the retaining clip 30 can be clipped in the mounting direction 31.
  • the properties of the damping layers 27, 28, 37, 41 can be adapted via the thickness and / or the material properties with regard to some optimization parameters.
  • the optimization parameters that can be used are, in particular, the frequency contents to be damped and the temperature.
  • an outer damping layer 27, 28, as shown, inter alia, with reference to 6 and 7 is described, are influenced by a geometric design. Specifically, a profiling or micro-profiling on an outer damping layer 27, 28 may be provided. For example, outwardly directed nubs may be provided. As a result, the damping effect can optionally be increased further.
  • the damping composite elements 11, 12, 13 may be designed as annular or partially annular damping composite elements 11, 12, 13. In a partially annular design, a plurality of damping composite elements distributed over the circumference may be provided. Accordingly, a plurality of retaining clips corresponding to the retaining clip 30 may be provided over the circumference.

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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)

Description

Stand der TechnikState of the art

Die Erfindung betrifft eine Anordnung, insbesondere eine Brennstoffeinspritzanlage zur Hochdruckeinspritzung bei Brennkraftmaschinen, mit einem Brennstoffverteiler und mehreren Brennstoffeinspritzventilen.The invention relates to an arrangement, in particular a fuel injection system for high-pressure injection in internal combustion engines, with a fuel distributor and a plurality of fuel injection valves.

Aus der EP 2 151 572 A2 ist eine Brennstoffverteilerleiste mit mehreren Brennstoffeinspritzventilen bekannt. Zur Verbindung der Brennstoffeinspritzventile mit der Brennstoffverteilerleiste wird ein Kragen um einen Einstich an dem jeweiligen Brennstoffeinspritzventil gelegt, wobei an dem Kragen Zungen ausgestaltet sind. Ein Injektoranschluss an der Brennstoffverteilerleiste weist einen zylindrischen Körper auf, in den das obere Ende des Brennstoffeinspritzventils gefügt wird. Ein Haltebügel ist über den zylindrischen Körper gefügt, wobei Ausnehmungen im Haltebügel mit den Zungen des Kragens zusammen wirken. Dadurch erfolgt die Befestigung des zugeordneten Brennstoffeinspritzventils an der Brennstoffverteilerleiste.From the EP 2 151 572 A2 is a fuel rail with multiple fuel injection valves known. To connect the fuel injectors with the fuel rail, a collar is placed around a puncture on the respective fuel injection valve, wherein tongues are configured on the collar. An injector port on the fuel rail has a cylindrical body into which the upper end of the fuel injector is joined. A headband is fitted over the cylindrical body, wherein recesses in the headband cooperate with the tongues of the collar. As a result, the attachment of the associated fuel injection valve takes place at the fuel distributor rail.

Die aus der EP 2 151 572 A2 bekannte Ausgestaltung hat den Nachteil, dass die Brennstoffverteilerleiste im Betrieb zu Schwingungen im hörbaren Frequenzbereich angeregt wird. Dies geschieht vor allem durch Geräuschquellen in den Brennstoffeinspritzventilen. Der Körperschall breitet sich hierbei von den Brennstoffeinspritzventilen über die zylinderförmigen Körper der Injektoranschlüsse, die Brennstoffverteilerleiste und Railhalter oder dergleichen auf die Anbaustruktur aus, von wo störende Geräusche abgestrahlt werden. Diese störenden Geräusche können unter Umständen sogar bis ins Innere des Fahrzeugs dringen. Als Anbaustruktur kann der Zylinderkopf dienen.The from the EP 2 151 572 A2 known embodiment has the disadvantage that the fuel rail is excited in operation to oscillations in the audible frequency range. This happens mainly due to noise sources in the fuel injection valves. In this case, the structure-borne sound propagates from the fuel injection valves via the cylindrical bodies of the injector connections, the fuel distributor rail and rail holder or the like onto the mounting structure, from where disturbing noises are emitted. Under certain circumstances, these disturbing noises can even penetrate into the interior of the vehicle. As a mounting structure, the cylinder head can serve.

Aus der US 7,334,571 B1 ist bereits eine Anordnung als Brennstoffeinspritzanlage zur Hochdruckeinspritzung bei Brennkraftmaschinen bekannt, bei der ein Brennstoffverteiler und mehrere Brennstoffeinspritzventile vorgesehen sind, wobei jedes der Brennstoffeinspritzventile an einer Tasse des Brennstoffverteilers angeordnet ist und wobei zumindest eines der Brennstoffeinspritzventile an der zugeordneten Tasse befestigt ist. Außerdem ist ein Dämpfungselement vorgesehen, das zwischen der Tasse und der Außenseite des Brennstoffeinspritzventils angeordnet ist, wobei das Dämpfungselement zumindest eine elastisch verformbare Dämpfungsschicht aufweist.From the US 7,334,571 B1 An arrangement is already known as a fuel injection system for high-pressure injection in internal combustion engines, in which a fuel distributor and a plurality of fuel injection valves are provided, wherein each of the fuel injection valves is arranged on a cup of the fuel distributor and wherein at least one of the fuel injection valves is attached to the associated cup. In addition, a damping element is provided, which is arranged between the cup and the outside of the fuel injection valve, wherein the damping element has at least one elastically deformable damping layer.

Offenbarung der ErfindungDisclosure of the invention

Die erfindungsgemäße Anordnung mit den Merkmalen des Anspruchs 1 hat den Vorteil, dass eine schwingungstechnische Entkopplung beziehungsweise Dämpfung zwischen den Brennstoffeinspritzventilen und dem Brennstoffverteiler ermöglicht ist. Speziell ergibt sich der Vorteil, dass auftretende Geräuschemissionen verringert werden können.The arrangement according to the invention with the features of claim 1 has the advantage that a vibration control decoupling or damping between the fuel injection valves and the fuel distributor is made possible. Specifically, there is the advantage that occurring noise emissions can be reduced.

Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen der im Anspruch 1 angegebenen Anordnung möglich.The measures listed in the dependent claims advantageous developments of the arrangement specified in claim 1 are possible.

Speziell eignet sich die Anordnung für Brennkraftmaschinen zur Benzindirekteinspritzung. Der Brennstoffverteiler kann hierbei insbesondere als Brennstoffverteilerleiste ausgestaltet sein. Der Brennstoffverteiler kann zum einen zur Verteilung des Brennstoffs auf mehrere Brennstoffeinspritzventile, insbesondere Hochdruckeinspritzventile, dienen. Zum anderen kann der Brennstoffverteiler als gemeinsamer Brennstoffspeicher für die Brennstoffeinspritzventile dienen. Die Brennstoffeinspritzventile sind mit dem Brennstoffverteiler verbunden und spritzen den zum Verbrennungsvorgang erforderlichen Brennstoff unter hohem Druck vorzugsweise direkt in die Brennräume der Brennkraftmaschine ein. Der Brennstoff wird hierbei über eine Hochdruckpumpe verdichtet und mengengesteuert über eine Hochdruckleitung in den Brennstoffverteiler gefördert.Specifically, the arrangement is suitable for internal combustion engines for gasoline direct injection. The fuel distributor can in this case be configured in particular as a fuel distributor strip. The fuel distributor can serve for distributing the fuel to a plurality of fuel injection valves, in particular high-pressure injection valves. On the other hand, the fuel distributor can serve as a common fuel storage for the fuel injection valves. The fuel injection valves are connected to the fuel distributor and inject the fuel required for the combustion process under high pressure, preferably directly into the combustion chambers of the internal combustion engine. The fuel is in this case compressed via a high-pressure pump and quantity-controlled conveyed via a high-pressure line in the fuel distributor.

Die Befestigung des Brennstoffverteilers an einer Anbaustruktur, insbesondere einem Zylinderkopf der Brennkraftmaschine, kann direkt oder aber auch über Distanzhülsen und gegebenenfalls weitere Verbindungselemente erfolgen.The attachment of the fuel distributor to a mounting structure, in particular a cylinder head of the internal combustion engine, can be done directly or else via spacers and optionally further connecting elements.

In vorteilhafter Weise können die Brennstoffeinspritzventile als aufgehängte Brennstoffeinspritzventile an den Tassen befestigt werden. Das Halteelement zur Verbindung kann hierbei eine Rastverbindung einerseits mit der Tasse und andererseits mit dem Brennstoffeinspritzventil bilden. Ein teilringförmiger Absatz der Tasse kann in Form einer Nase oder eines Bunds ausgestaltet sein. Entsprechend ist in vorteilhafter Weise an dem Brennstoffeinspritzventil ein Bund vorgesehen. Somit können die quasistatischen Kräfte zur Befestigung übertragen werden. Gleichzeitig erfüllt das Halteelement die Funktion, dass die relative Auslenkung des Brennstoffeinspritzventils gegenüber der zugeordneten Tasse unter der Einwirkung von Betriebskräften unter einem definierten Grenzwert bleibt, wodurch beispielsweise eine O-Ring-Dichtung oder eine Teflon-Ring-Dichtung vor Beschädigung und Verschleiß geschützt sind.Advantageously, the fuel injectors may be attached to the cups as suspended fuel injectors. The holding element for the connection can in this case form a latching connection on the one hand with the cup and on the other hand with the fuel injection valve. A part-annular shoulder of the cup may be configured in the form of a nose or a collar. Accordingly, a collar is provided on the fuel injection valve in an advantageous manner. Thus, the quasi-static forces can be transferred for attachment. At the same time, the retaining element fulfills the function that the relative deflection of the fuel injection valve relative to the associated cup under the action of operating forces remains below a defined limit, whereby, for example, an O-ring seal or a Teflon-ring seal are protected from damage and wear.

Vorteilhaft ist es, dass die Anlagefläche der Tasse und die Anlagefläche des Brennstoffeinspritzventils voneinander abgewandt sind. Ferner ist es vorteilhaft, dass die Anlagefläche der Tasse und die Stützfläche der Tasse voneinander abgewandt sind. Bei dieser Ausgestaltung kann die Halteklammer in vorteilhafter Weise als U-förmige Halteklammer ausgestaltet sein. Bei der Montage kann die Halteklammer dann gewissermaßen auf die Tasse und das Brennstoffeinspritzventil, das in die Tasse eingefügt ist, aufgeclipst werden. Hierdurch ist eine zuverlässige Verbindung gebildet, wobei die Montage in einfacher Weise durchgeführt werden kann.It is advantageous that the contact surface of the cup and the contact surface of the fuel injection valve are remote from each other. Furthermore, it is advantageous that the contact surface of the cup and the support surface of the cup are remote from each other. at This configuration, the retaining clip can be configured in an advantageous manner as a U-shaped retaining clip. During assembly, the retaining clip can then be clipped onto the cup and fuel injector inserted into the cup, as it were. As a result, a reliable connection is formed, wherein the assembly can be carried out in a simple manner.

Vorteilhaft ist es auch, dass an der Außenseite der Tasse ein zumindest teilringförmiger Absatz der Tasse ausgestaltet ist, an dem die Anlagefläche der Tasse ausgestaltet ist. Der zumindest teilringförmige Absatz kann als ringförmiger Absatz oder als teilringförmige Absatz ausgestaltet sein. Entsprechend ist es vorteilhaft, dass an dem Brennstoffeinspritzventil ein zumindest teilringförmiger Bund ausgestaltet ist, an dem die Anlagefläche des Brennstoffeinspritzventils und eine der Stützfläche der Tasse zugewandte Stützfläche ausgestaltet sind. Der zumindest teilringförmige Bund kann als teilringförmiger Bund oder als ringförmiger Bund ausgestaltet sein. Bei einer teilringförmigen Ausgestaltung des Absatzes der Tasse beziehungsweise des Bundes des Brennstoffeinspritzventils können auch mehrere Absätze beziehungsweise Bünde vorgesehen sein, an denen mehrere Halteklammern befestigt sind. Die Anzahl der als Halteklammern ausgestalteten Halteelemente, die ein Brennstoffeinspritzventil an einer zugeordneten Tasse des Brennstoffverteilers befestigen, kann in Bezug auf den jeweiligen Anwendungsfall gewählt werden.It is also advantageous that an at least partially annular shoulder of the cup is designed on the outside of the cup, on which the contact surface of the cup is designed. The at least partially annular paragraph may be configured as an annular paragraph or as a part-annular paragraph. Accordingly, it is advantageous that on the fuel injection valve, an at least partially annular collar is configured, on which the contact surface of the fuel injection valve and a support surface of the cup facing support surface are configured. The at least partially annular collar can be configured as a partial annular collar or as an annular collar. In a partial ring-shaped embodiment of the paragraph of the cup or the Federal of the fuel injection valve also several paragraphs or frets may be provided on which a plurality of retaining clips are attached. The number of retaining elements designed as retaining clips, which fasten a fuel injection valve to an associated cup of the fuel distributor, can be selected with reference to the respective application.

Vorteilhaft ist es ferner, dass zumindest eines der Dämpfungsverbundelemente einen umgebogenen Außenabschnitt aufweist, der eine Außenseite des Bundes umgreift. Hierdurch wird ein Kontakt zwischen der Außenseite des Bundes und der Halteklammer zuverlässig verhindert. Entsprechend ist es vorteilhaft, dass zumindest eines der Dämpfungsverbundelemente als zumindest näherungsweise ebenes Dämpfungsverbundelement ausgestaltet ist und über eine Außenseite des Bundes übersteht. Dies garantiert einen gewissen Abstand zwischen der Halteklammer und der Außenseite des Bundes.It is also advantageous that at least one of the damping composite elements has a bent outer portion which engages around an outer side of the federal government. As a result, contact between the outside of the collar and the retaining clip is reliably prevented. Accordingly, it is advantageous that at least one of the damping composite elements is designed as an at least approximately planar damping composite element and projects beyond an outside of the collar. This guarantees a certain distance between the retaining clip and the outside of the collar.

In vorteilhafter Weise ist zumindest eines der Dämpfungsverbundelemente als ringbeziehungsweise teilringförmiges Dämpfungsverbundelement ausgestaltet. Hierdurch kann eine homogene Beaufschlagung des Dämpfungsverbundelements erzielt werden. Somit ergibt sich eine wirkungsvolle Dämpfung über die Lebensdauer. Besonders vorteilhaft ist diesbezüglich eine kreisringförmige Ausgestaltung der Dämpfungsverbundelemente. Falls diese beispielsweise aus Montagegründen nicht möglich ist, um etwa einen Stecker zu umgehen, dann kann auch eine teilkreisförmige Kontur, beispielsweise in Form eines C-Rings, gewählt werden.In an advantageous manner, at least one of the damping composite elements is configured as a ring-shaped or partially annular damping composite element. As a result, a homogeneous loading of the damping composite element can be achieved. This results in an effective damping over the lifetime. Particularly advantageous in this regard is an annular configuration of the damping composite elements. If this is not possible, for example for assembly reasons, to circumvent a plug, for example, then a part-circular contour, for example in the form of a C-ring, can be selected.

In vorteilhafter Weise ist das Dämpfungsverbundelement zwischen der Stützfläche des Brennstoffeinspritzventils und der Stützfläche der Tasse angeordnet. Vorteilhaft ist es auch, dass ein erstes Dämpfungsverbundelement zwischen dem Brennstoffeinspritzventil und der Stützfläche der Tasse angeordnet ist und dass ein zweites Dämpfungsverbundelement zwischen der Anlagefläche des Brennstoffeinspritzventils und der Halteklammer angeordnet ist. Bei dieser Ausgestaltung wird ein direkter Kontakt von Metall auf Metall vermieden, indem stets ein Dämpfungsverbundelement im mechanischen Kraftübertragungsweg zwischengeschaltet ist. Hierdurch ergibt sich eine besonders wirkungsvolle Schwingungsdämpfung.Advantageously, the damping composite element between the support surface of the fuel injection valve and the support surface of the cup is arranged. It is also advantageous that a first damping composite element between the fuel injection valve and the support surface of the cup is arranged and that a second damping composite element between the contact surface of the fuel injection valve and the retaining clip is arranged. In this embodiment, a direct contact of metal on metal is avoided by always a damping composite element is interposed in the mechanical power transmission path. This results in a particularly effective vibration damping.

Außerdem ist es vorteilhaft, dass die Halteklammer aus einem Verbundelement mit zumindest einer metallischen Metallschicht und zumindest einer Dämpfungsschicht ausgestaltet ist. Die Halteklammer kann dann durch Umformen des Verbundblechs hergestellt werden. Das Verbundblech kann beispielsweise einen Schichtaufbau aus zwei Metallschichten und einer dazwischen liegenden elastisch verformbaren Schicht, insbesondere einer Elastomerschicht, aufweisen. Hierdurch kann der Aufbau zur Schwingungsentkopplung gegebenenfalls auch vereinfacht werden, wobei die aus dem Verbundblech gebildete Halteklammer durch ihre inhärente Bauteildämpfung die Isolationswirkung ermöglicht. Je nach Anwendungsfall kann die Halteklammer jedoch auch aus einem starren Werkstoff gebildet sein.Moreover, it is advantageous that the retaining clip is configured from a composite element with at least one metallic metal layer and at least one damping layer. The retaining clip can then be made by reshaping the composite sheet. The composite metal sheet may, for example, have a layer structure of two metal layers and an elastically deformable layer located therebetween, in particular an elastomer layer. As a result, the structure for vibration decoupling may possibly also be simplified, the retaining clip formed from the composite sheet permitting the insulation effect by virtue of its inherent component damping. Depending on the application, however, the retaining clip may also be formed of a rigid material.

Das Dämpfungsverbundelement ist in vorteilhafter Weise aus zumindest einer Metallschicht und zumindest einer Dämpfungsschicht ausgestaltet. Hierbei sind zahlreiche Varianten denkbar, die sich unter anderem in der Anzahl der Schichten unterscheiden.The damping composite element is advantageously configured from at least one metal layer and at least one damping layer. Numerous variants are conceivable here, which differ among other things in the number of layers.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Bevorzugte Ausführungsbeispiele der Erfindung sind in der nachfolgenden Beschreibung unter Bezugnahme auf die beigefügten Zeichnungen, in denen sich entsprechende Elemente mit übereinstimmenden Bezugszeichen versehen sind, näher erläutert. Es zeigt:

  • Fig. 1 eine Anordnung mit einem Brennstoffverteiler und mehreren Brennstoffeinspritzventilen in einer schematischen, auszugsweisen Schnittdarstellung entsprechend einem ersten Ausführungsbeispiel der Erfindung;
  • Fig. 2 ein Brennstoffeinspritzventil und eine Tasse des Brennstoffverteilers der in Fig. 1 dargestellten Anordnung des ersten Ausführungsbeispiels in einer auszugsweisen, schematischen Schnittdarstellung;
  • Fig. 3 den in Fig. 2 dargestellten Ausschnitt einer Anordnung entsprechend einem zweiten Ausführungsbeispiel der Erfindung;
  • Fig. 4 den in Fig. 2 dargestellten Ausschnitt einer Anordnung entsprechend einem dritten Ausführungsbeispiel der Erfindung;
  • Fig. 5 den in Fig. 2 dargestellten Ausschnitt einer Anordnung entsprechend einem vierten Ausführungsbeispiel der Erfindung;
  • Fig. 6 ein Dämpfungsverbundelement für die in Fig. 1 dargestellte Anordnung entsprechend einem fünften Ausführungsbeispiel der Erfindung in einer schematischen Schnittdarstellung;
  • Fig. 7 ein Dämpfungsverbundelement für die in Fig. 1 dargestellte Anordnung entsprechend einem sechsten Ausführungsbeispiel der Erfindung in einer schematischen Schnittdarstellung und
  • Fig. 8 ein Dämpfungsverbundelement für die in Fig. 1 dargestellte Anordnung entsprechend einem siebten Ausführungsbeispiel der Erfindung in einer schematischen Schnittdarstellung.
Preferred embodiments of the invention are explained in more detail in the following description with reference to the accompanying drawings, in which corresponding elements are provided with identical reference numerals. It shows:
  • Fig. 1 an arrangement with a fuel distributor and a plurality of fuel injection valves in a schematic, partial sectional view according to a first embodiment of the invention;
  • Fig. 2 a fuel injection valve and a cup of the fuel distributor of in Fig. 1 illustrated arrangement of the first embodiment in an excerpt, schematic sectional view;
  • Fig. 3 the in Fig. 2 illustrated section of an arrangement according to a second embodiment of the invention;
  • Fig. 4 the in Fig. 2 illustrated detail of an arrangement according to a third embodiment of the invention;
  • Fig. 5 the in Fig. 2 illustrated section of an arrangement according to a fourth embodiment of the invention;
  • Fig. 6 a damping composite element for in Fig. 1 illustrated arrangement according to a fifth embodiment of the invention in a schematic sectional view;
  • Fig. 7 a damping composite element for in Fig. 1 illustrated arrangement according to a sixth embodiment of the invention in a schematic sectional view and
  • Fig. 8 a damping composite element for in Fig. 1 illustrated arrangement according to a seventh embodiment of the invention in a schematic sectional view.

Ausführungsformen der ErfindungEmbodiments of the invention

Fig. 1 zeigt eine Anordnung 1 mit einem Brennstoffverteiler 2 und mehreren Brennstoffeinspritzventilen 3, 4. Der Brennstoffverteiler 2 kann insbesondere als Brennstoffverteilerleiste ausgestaltet sein. Der Brennstoffverteiler 2 dient zum Speichern von unter hohem Druck stehenden Brennstoff und zum Verteilen des Brennstoffs auf die mehreren Brennstoffeinspritzventile 3, 4. Zur Vereinfachung der Darstellung sind in diesem Ausführungsbeispiel nur zwei Brennstoffeinspritzventile 3, 4 dargestellt. Die Anzahl der Brennstoffeinspritzventile 3, 4, die mit dem Brennstoffverteiler 2 verbunden sind, hängt von der Anzahl der Zylinder der Brennkraftmaschine ab. Der Brennstoffverteiler 2 ist auf geeignete Weise mit einer Anbaustruktur 5, insbesondere einem Zylinderkopf 5, verbunden. Die Anbindung des Brennstoffverteilers 2 kann auch über Distanzhülsen oder über weitere Verbindungselemente 6, 7 erfolgen. Ferner ist eine Hochdruckleitung 8 vorgesehen, die mit dem Brennstoffverteiler 2 verbunden ist. Die Hochdruckleitung 8 dient zum Zuführen von unter hohem Druck stehenden Brennstoff in den Brennstoffverteiler 2. Fig. 1 shows an arrangement 1 with a fuel distributor 2 and a plurality of fuel injection valves 3, 4. The fuel distributor 2 may be configured in particular as a fuel distributor rail. The fuel distributor 2 serves to store high-pressure fuel and to distribute the fuel to the plurality of fuel injection valves 3, 4. For simplicity of illustration, only two fuel injection valves 3, 4 are shown in this embodiment. The number of fuel injection valves 3, 4 connected to the fuel distributor 2 depends on the number of cylinders of the internal combustion engine. The fuel distributor 2 is suitably connected to a mounting structure 5, in particular a cylinder head 5. The connection of the fuel distributor 2 can also be made via spacers or via further connecting elements 6, 7. Furthermore, a high pressure line 8 is provided with the the fuel distributor 2 is connected. The high-pressure line 8 serves to supply high-pressure fuel into the fuel distributor 2.

An dem Brennstoffverteiler 2 sind Tassen 9, 10 vorgesehen. Die Brennstoffeinspritzventile 3, 4 sind mit den Tassen 9, 10 verbunden. Hierbei sind Dämpfungsverbundelemente 11, 12 vorgesehen, die die Brennstoffeinspritzventile 3, 4 von den Tassen 9, 10 entkoppeln. Die Fig. 1 zeigt hierbei eine schematische Anordnung, bei der die Dämpfungsverbundelemente 11, 12 zwischen die Brennstoffeinspritzventile 3, 4 und die zugeordneten Tassen 9, 10 geschaltet sind. Die Ausgestaltung der Entkopplung und der Verbindung zwischen den Brennstoffeinspritzventilen 3, 4 und der zugeordneten Tasse 9, 10 ist anhand der Fig. 2 näher beschrieben.At the fuel distributor 2 cups 9, 10 are provided. The fuel injection valves 3, 4 are connected to the cups 9, 10. In this case, damping composite elements 11, 12 are provided which decouple the fuel injection valves 3, 4 from the cups 9, 10. The Fig. 1 shows a schematic arrangement in which the damping composite elements 11, 12 are connected between the fuel injection valves 3, 4 and the associated cups 9, 10. The configuration of the decoupling and the connection between the fuel injection valves 3, 4 and the associated cup 9, 10 is based on the Fig. 2 described in more detail.

Fig. 2 zeigt das Brennstoffeinspritzventil 3 und die Tasse 9 des Brennstoffverteilers 2 der in Fig. 1 dargestellten Anordnung 1 gemäß dem ersten Ausführungsbeispiel in einer auszugsweisen, schematischen Schnittdarstellung. Das Brennstoffeinspritzventil 3 weist eine Längsachse 15 auf. Die Tasse 9 weist eine Unterseite 16 auf, die in diesem Ausführungsbeispiel eine Stützfläche 17 bildet. Die Stützfläche 17 kann aber auch auf andere Weise an der Unterseite 16 ausgestaltet sein. An einer Außenseite 18 der Tasse 9 ist eine Anlagefläche vorgesehen, die in diesem Ausführungsbeispiel senkrecht zu der Längsachse 15 orientiert ist. Ferner ist an einer Außenseite 20 des Brennstoffeinspritzventils 3 eine Anlagefläche 21 ausgestaltet, die in diesem Ausführungsbeispiel senkrecht zu der Längsachse 15 orientiert ist. Die Anlagefläche 19 der Tasse 9 und die Anlagefläche 21 des Brennstoffeinspritzventils 3 sind voneinander abgewandt. Fig. 2 shows the fuel injection valve 3 and the cup 9 of the fuel distributor 2 in Fig. 1 illustrated arrangement 1 according to the first embodiment in a partial, schematic sectional view. The fuel injection valve 3 has a longitudinal axis 15. The cup 9 has an underside 16, which forms a support surface 17 in this embodiment. The support surface 17 may also be configured in other ways on the bottom 16. On an outer side 18 of the cup 9, a contact surface is provided, which is oriented perpendicular to the longitudinal axis 15 in this embodiment. Further, on an outer side 20 of the fuel injection valve 3, a contact surface 21 is designed, which is oriented perpendicular to the longitudinal axis 15 in this embodiment. The contact surface 19 of the cup 9 and the contact surface 21 of the fuel injection valve 3 are remote from each other.

In diesem Ausführungsbeispiel ist an der Außenseite 18 der Tasse 9 ein ring- oder teilringförmiger Absatz 22 der Tasse 9 ausgestaltet, an dem die Anlagefläche 19 der Tasse 9 ausgestaltet ist. Ferner ist an dem Brennstoffeinspritzventil 3 ein ring- oder teilringförmiger Bund 23 ausgestaltet, an dem die Anlagefläche 21 des Brennstoffeinspritzventils 3 ausgestaltet ist. An dem Bund 23 ist außerdem eine Stützfläche ausgestaltet. Die Stützfläche 17 der Tasse 9 und die Stützfläche 24 des Brennstoffeinspritzventils 3 sind in diesem Ausführungsbeispiel jeweils senkrecht zu der Längsachse 15 orientiert. Ferner sind die Stützfläche 17 der Tasse 9 und die Stützfläche 24 des Brennstoffeinspritzventils 3 einander zugewandt.In this embodiment, on the outer side 18 of the cup 9, a ring-shaped or partially annular shoulder 22 of the cup 9 is configured, on which the contact surface 19 of the cup 9 is configured. Further, an annular or partially annular collar 23 is configured on the fuel injection valve 3, on which the contact surface 21 of the fuel injection valve 3 is configured. On the collar 23, a support surface is also configured. The support surface 17 of the cup 9 and the support surface 24 of the fuel injection valve 3 are each oriented perpendicular to the longitudinal axis 15 in this embodiment. Further, the support surface 17 of the cup 9 and the support surface 24 of the fuel injection valve 3 face each other.

Zwischen der Stützfläche 17 der Tasse 9 und der Stützfläche 24 des Brennstoffeinspritzventils 3 ist das Dämpfungsverbundelement 11 angeordnet. Das Dämpfungsverbundelement 11 ist in diesem Ausführungsbeispiel als flaches Dämpfungsverbundelement 11 ausgestaltet. Das Dämpfungsverbundelement 11 weist Metallschichten 25, 26 auf, die jeweils auf einem metallischen Werkstoff basieren. Zwischen den Metallschichten 25, 26 ist eine Dämpfungsschicht 27 des Dämpfungsverbundelements 11 vorgesehen. Die Dämpfungsschicht 27 kann aus einem Gummi, insbesondere einem Naturkautschuk oder einem synthetischen Gummi, ausgestaltet sein. Die Dämpfungsschicht 27 kann insbesondere durch Vulkanisieren mit den Metallschichten 25, 26 verbunden sein. Dadurch ist eine mehrschichtige Ausgestaltung des Dämpfungsverbundelements 11 möglich. Ein direkter Kontakt zwischen den Metallschichten 25, 26 ist hierdurch durch die Dämpfungsschicht 27 verhindert. Somit ist an der Schnittstelle zwischen der Tasse 9 und dem Brennstoffeinspritzventil 3 ein direkter Kontakt von Metall auf Metall verhindert, da in diesem Weg die Dämpfungsschicht 27 angeordnet ist, wie es auch schematisch anhand der Fig. 1 dargestellt ist.Between the support surface 17 of the cup 9 and the support surface 24 of the fuel injection valve 3, the damping composite element 11 is arranged. The damping composite element 11 is in this embodiment as a flat Damping composite element 11 configured. The damping composite element 11 has metal layers 25, 26, each based on a metallic material. Between the metal layers 25, 26 a damping layer 27 of the damping composite element 11 is provided. The damping layer 27 may be made of a rubber, in particular a natural rubber or a synthetic rubber. The damping layer 27 may in particular be connected to the metal layers 25, 26 by vulcanization. As a result, a multi-layered design of the damping composite element 11 is possible. Direct contact between the metal layers 25, 26 is thereby prevented by the damping layer 27. Thus, at the interface between the cup 9 and the fuel injection valve 3 prevents direct contact of metal on metal, since in this way the damping layer 27 is arranged, as also schematically with reference to Fig. 1 is shown.

Die Anordnung 1 weist außerdem ein als Halteklammer 30 ausgestaltetes Halteelement 30 auf. Die Halteklammer 30 ist in diesem Ausführungsbeispiel aus einem starren Werkstoff, insbesondere einem Metall, ausgebildet. Die Halteklammer 30 hintergreift einerseits die Anlagefläche 19 der Tasse 9 und andererseits die Anlagefläche 21 des Brennstoffeinspritzventils 3. Hierbei beaufschlagt die Halteklammer 30 den Bund 30 des Brennstoffeinspritzventils 3 gegen die Unterseite 16 der Tasse 9. Die Halteklammer 30 kann beispielsweise in einer Montagerichtung 31 auf den Absatz 22 der Tasse 9 und den Bund 23 des Brennstoffeinspritzventils 3 aufgeclipst werden, wenn das Brennstoffeinspritzventil 3 in seiner Endposition teilweise in die Tasse 3 gefügt ist. Hierbei kann eine gewisse Vorspannung auf das Dämpfungsverbundelement 11 und somit die Dämpfungsschicht 27 ausgeübt werden.The arrangement 1 also has a retaining element 30 configured as a retaining clip 30. The retaining clip 30 is formed in this embodiment of a rigid material, in particular a metal. The retaining clip 30 engages on the one hand the contact surface 19 of the cup 9 and on the other hand, the contact surface 21 of the fuel injection valve 3. Here, the retaining clip 30 acts on the collar 30 of the fuel injection valve 3 against the bottom 16 of the cup 9. The retaining clip 30 can, for example, in a mounting direction 31 on the Paragraph 22 of the cup 9 and the collar 23 of the fuel injection valve 3 are clipped when the fuel injection valve 3 is partially joined in its end position in the cup 3. Here, a certain bias on the damping composite element 11 and thus the damping layer 27 are exercised.

Somit kann durch das Dämpfungsverbundelement 11 eine akustische Entkopplung realisiert werden. In entsprechender Weise ist die Verbindung des Brennstoffeinspritzventils 4 mit dem Brennstoffverteiler 2 ausgestaltet.Thus, an acoustic decoupling can be realized by the damping composite element 11. In a corresponding manner, the connection of the fuel injection valve 4 is configured with the fuel distributor 2.

Bei dem anhand der Fig. 1 und 2 beschriebenen ersten Ausführungsbeispiel wird eine Teilentkopplung realisiert, da über die metallische Halteklammer 30 metallische Kontakte zwischen dem Brennstoffeinspritzventil 3 und der Tasse 9 existieren. Hierbei kann eine schwingungstechnische Entkopplung und Dämpfung erzielt werden, ohne die sonstigen Anforderungen zu verletzen. Im Ergebnis ergibt sich eine Reduzierung der Geräuschemission der Anordnung 1 sowie gegebenenfalls mit der Anordnung 1 verbundener Komponenten.In the case of the Fig. 1 and 2 a partial decoupling is realized because of the metallic retaining clip 30 metallic contacts between the fuel injection valve 3 and the cup 9 exist. In this case, a vibration control decoupling and damping can be achieved without violating the other requirements. As a result, there is a reduction in the noise emission of the arrangement 1 as well as components optionally connected to the arrangement 1.

Fig. 3 zeigt den in Fig. 2 dargestellten Ausschnitt einer Anordnung 1 entsprechend einem zweiten Ausführungsbeispiel der Erfindung. In diesem Ausführungsbeispiel ist zwischen der Anlagefläche 21 des Bundes 23 des Brennstoffeinspritzventils 3 und der Halteklammer 30 ein weiteres Dämpfungsverbundelement 13 angeordnet. Das Dämpfungsverbundelement 13 weist eine dem Dämpfungsverbundelement 11 entsprechende Ausgestaltung auf. Das Dämpfungsverbundelement 13 umfasst Metallschichten 35, 36 und eine Dämpfungsschicht 37, die zwischen den Metallschichten 35, 36 angeordnet ist. Bei dieser Ausgestaltung sind Kontakte von Metall auf Metall, über die eine Körperschallübertragung noch möglich ist, vollständig verhindert. Somit existieren keine reinen Metallkontakte und es entsteht eine volle Isolation, indem im Unterschied zu dem anhand der Fig. 2 beschriebenen zweiten Ausführungsbeispiel auch zwischen der Halteklammer 30 und dem Bund 23 ein Dämpfungsverbundelement 13 vorgesehen beziehungsweise eingelegt ist. Fig. 3 shows the in Fig. 2 shown section of an arrangement 1 according to a second embodiment of the invention. In this embodiment, a further damping composite element 13 is disposed between the abutment surface 21 of the collar 23 of the fuel injection valve 3 and the retaining clip 30. The damping composite element 13 has a configuration corresponding to the damping composite element 11. The damping composite element 13 comprises metal layers 35, 36 and a damping layer 37, which is arranged between the metal layers 35, 36. In this embodiment, contacts of metal on metal, over which a structure-borne sound transmission is still possible, completely prevented. Thus, there are no pure metal contacts and there is a full isolation, in contrast to the basis of the Fig. 2 described second embodiment and between the retaining clip 30 and the collar 23, a damping composite element 13 is provided or inserted.

Somit ist bei dieser Ausgestaltung ein erstes der Dämpfungsverbundelemente 11, 13, nämlich das Dämpfungsverbundelement 11, zwischen dem Brennstoffeinspritzventil 3 und der Stützfläche 17 der Tasse 9 angeordnet und ein zweites der Dämpfungsverbundelemente 11, 13, nämlich das Dämpfungsverbundelement 13, ist zwischen der Anlagefläche 21 des Brennstoffeinspritzventils 3 und der Halteklammer 30 angeordnet. Außerdem sind die beiden Dämpfungsverbundelemente 11, 13 als ebene Dämpfungsverbundelemente 13 ausgestaltet. Die Dämpfungsverbundelemente 13 stehen dabei jeweils über eine Außenseite 38 des Bundes 23 des Brennstoffeinspritzventils 3 über. Hierdurch ist stets eine Beabstandung der Halteklammer 30 von der Außenseite 38 des Bundes 23 gewährleistet.Thus, in this embodiment, a first of the damping composite elements 11, 13, namely the damping composite element 11, disposed between the fuel injection valve 3 and the support surface 17 of the cup 9 and a second of the damping composite elements 11, 13, namely the damping composite element 13 is between the contact surface 21 of the Fuel injection valve 3 and the retaining clip 30 is arranged. In addition, the two damping composite elements 11, 13 configured as a flat damping composite elements 13. The damping composite elements 13 are in each case via an outer side 38 of the collar 23 of the fuel injection valve 3 via. As a result, a spacing of the retaining clip 30 is always ensured by the outer side 38 of the collar 23.

Fig. 4 zeigt den in Fig. 2 dargestellten Ausschnitt einer Anordnung 1 entsprechend einem dritten Ausführungsbeispiel. In diesem Ausführungsbeispiel ist ein Dämpfungsverbundelement 11 zwischen der Stützfläche 24 des Bundes 23 und der Stützfläche 17 der Tasse 9 angeordnet. Außerdem ist die Halteklammer 30 aus einem Verbundblech mit Metallschichten 39, 40 und einer zwischen den Metallschichten 39, 40 angeordneten Dämpfungsschicht 41 ausgestaltet. Die Halteklammer 30 kann direkt aus einem ebenen Verbundblech durch Umformen hergestellt werden. Die Halteklammer 30 ermöglicht dann eine inhärente Bauteildämpfung, um die Isolationswirkung zu ermöglichen. Dadurch ist ein akustisch vollständig entkoppeltes Verbinden des Brennstoffeinspritzventils 3 mit der Tasse 9 des Brennstoffverteilers 3 möglich. Fig. 4 shows the in Fig. 2 shown section of an arrangement 1 according to a third embodiment. In this embodiment, a damping composite element 11 between the support surface 24 of the collar 23 and the support surface 17 of the cup 9 is arranged. In addition, the retaining clip 30 is made of a composite metal sheet with metal layers 39, 40 and an arranged between the metal layers 39, 40 damping layer 41. The retaining clip 30 can be made directly from a flat composite sheet by forming. The retaining clip 30 then allows inherent component damping to allow the isolation effect. As a result, an acoustically completely decoupled connection of the fuel injection valve 3 with the cup 9 of the fuel distributor 3 is possible.

Fig. 5 zeigt den in Fig. 2 dargestellten Ausschnitt einer Anordnung 1 entsprechend einem vierten Ausführungsbeispiel. In diesem Ausführungsbeispiel weist das Dämpfungsverbundelement 11 einen umgebogenen Außenabschnitt 42 auf, der die Außenseite 38 des Bundes 23 umgreift. Ferner weist das Dämpfungsverbundelement 13 einen umgebogenen Außenabschnitt 43 auf, der die Außenseite 38 des Bundes 23 umgreift. Die umgebogenen Außenabschnitte 42, 43 der Dämpfungsverbundelemente 11, 13 gewährleisten einen Abstand zwischen der Halteklammer 30 und der Außenseite 38 des Bundes 23. Selbst bei einem direkten Anliegen der Halteklammer 30 an den umgebogenen Außenabschnitten 42, 43 der Dämpfungsverbundelemente 11, 13 sowie der umgebogenen Außenabschnitte 42, 43 an der Außenseite 38 des Bundes 23 ist somit auch eine radiale Entkopplung zwischen dem Brennstoffeinspritzventil 3 und der Halteklammer 30 gewährleistet. Hierdurch wird eine akustisch vollständig entkoppelte Verbindung zwischen dem Brennstoffeinspritzventil 3 und der Tasse 9 gewährleistet. Fig. 5 shows the in Fig. 2 shown section of an arrangement 1 according to a fourth embodiment. In this embodiment, the damping composite element 11 has a bent outer portion 42, which the Outside 38 of the collar 23 surrounds. Furthermore, the damping composite element 13 on a bent outer portion 43 which engages around the outer side 38 of the collar 23. The bent outer portions 42, 43 of the damping composite elements 11, 13 ensure a distance between the retaining clip 30 and the outer side 38 of the collar 23. Even with a direct concern of the retaining clip 30 on the bent outer portions 42, 43 of the damping composite elements 11, 13 and the bent outer sections 42, 43 on the outer side 38 of the collar 23 thus a radial decoupling between the fuel injection valve 3 and the retaining clip 30 is ensured. As a result, an acoustically completely decoupled connection between the fuel injection valve 3 and the cup 9 is ensured.

Die Dämpfungsverbundelemente 11, 12, 13 weisen jeweils zumindest eine Metallschicht 25, 26 und zumindest eine Dämpfungsschicht 27 auf. Eine bevorzugte Ausgestaltung besteht aus genau zwei Metallschichten 25, 26 und einer dazwischen angeordneten Dämpfungsschicht 27. Die bevorzugte Ausgestaltung ist auch bei der Ausgestaltung der Halteklammer 30, wie es anhand der Fig. 4 beschrieben ist, von Vorteil. Weitere mögliche Ausgestaltungen der Dämpfungsverbundelemente 11, 12, 13 und/oder der Halteklammer 30 sind nachfolgend anhand der Fig. 6 bis 8 beschrieben. Hierbei sind geeignete Umformungen, insbesondere geeignete Biegungen, möglich.The damping composite elements 11, 12, 13 each have at least one metal layer 25, 26 and at least one damping layer 27. A preferred embodiment consists of exactly two metal layers 25, 26 and an interposed damping layer 27. The preferred embodiment is also in the embodiment of the retaining clip 30, as it is based on the Fig. 4 described is advantageous. Further possible embodiments of the damping composite elements 11, 12, 13 and / or the retaining clip 30 are described below with reference to FIG Fig. 6 to 8 described. In this case, suitable deformations, in particular suitable bends, are possible.

Fig. 6 zeigt ein Dämpfungsverbundelement 11 für die in Fig. 1 dargestellte Anordnung 1 entsprechend einem fünften Ausführungsbeispiel in einer schematischen Schnittdarstellung. In diesem Ausführungsbeispiel ist das Dämpfungsverbundelement 11 aus einer Metallschicht 25 und einer Dämpfungsschicht 27 ausgebildet. Hierbei kann die Dämpfungsschicht 27 beispielsweise der Stützfläche 24 des Bundes 23 oder der Stützfläche 17 der Tasse 9 zugeordnet sein. Fig. 6 shows a damping composite element 11 for in Fig. 1 illustrated arrangement 1 according to a fifth embodiment in a schematic sectional view. In this embodiment, the damping composite element 11 is formed of a metal layer 25 and a damping layer 27. Here, the damping layer 27, for example, the support surface 24 of the collar 23 or the support surface 17 of the cup 9 may be assigned.

Fig. 7 zeigt ein Dämpfungsverbundelement 11 entsprechend einem sechsten Ausführungsbeispiel in einer schematischen Schnittdarstellung. In diesem Ausführungsbeispiel ist das Dämpfungsverbundelement 11 aus einer Metallschicht 25 und Dämpfungsschichten 27, 28 ausgebildet. Die Metallschicht 25 ist in diesem Ausführungsbeispiel zwischen den Dämpfungsschichten 27, 28 angeordnet. Hierdurch dienen die Dämpfungsschichten 27, 28 als außenliegende Dämpfungsschichten 27, 28. Hierdurch ist eine vorteilhafte Anpassung an die Kontaktpartner und gegebenenfalls ein Toleranzausgleich möglich. Fig. 7 shows a damping composite element 11 according to a sixth embodiment in a schematic sectional view. In this exemplary embodiment, the damping composite element 11 is formed from a metal layer 25 and damping layers 27, 28. The metal layer 25 is arranged in this embodiment between the damping layers 27, 28. As a result, the damping layers 27, 28 serve as external damping layers 27, 28. In this way, an advantageous adaptation to the contact partners and optionally a tolerance compensation is possible.

Fig. 8 zeigt ein Dämpfungsverbundelement 11 entsprechend einem siebten Ausführungsbeispiel in einer schematischen Schnittdarstellung. In diesem Ausführungsbeispiel besteht das Dämpfungsverbundelement 11 aus Metallschichten 25, 26 und Dämpfungsschichten 27, 28. Hierbei dient die Dämpfungsschicht 27 als außenliegende Dämpfungsschicht 27. Die Metallschicht 25 ist zwischen den Dämpfungsschichten 27, 28 angeordnet und dient als innenliegende Metallschicht 25. Die Dämpfungsschicht 28 ist zwischen den Metallschichten 25, 26 angeordnet und dient als innenliegende Dämpfungsschicht 28. Die Metallschicht 26 dient als außenliegende Metallschicht 26. Die Dämpfungsschicht 27 kann beispielsweise der Stützfläche 24 des Bundes 23 oder der Stützfläche 17 der Tasse 9 zugeordnet sein. Bei dem anhand der Fig. 8 beschriebenen Ausführungsbeispiel ist somit eine vierlagige Ausgestaltung möglich. Fig. 8 shows a damping composite element 11 according to a seventh embodiment in a schematic sectional view. In this In the exemplary embodiment, the damping composite element 11 consists of metal layers 25, 26 and damping layers 27, 28. In this case, the damping layer 27 serves as the outer damping layer 27. The metal layer 25 is arranged between the damping layers 27, 28 and serves as an inner metal layer 25. The damping layer 28 is between the two Metal layer 25, 26 arranged and serves as an inner damping layer 28. The metal layer 26 serves as an outer metal layer 26. The damping layer 27, for example, the support surface 24 of the collar 23 or the support surface 17 of the cup 9 assigned. In the case of the Fig. 8 described embodiment, a four-layer design is thus possible.

In entsprechender Weise kann somit auch eine mehrlagige Ausgestaltung der Halteklammer 30 realisiert werden. Ferner sind auch Ausgestaltungen der Dämpfungsverbundelemente 11, 12, 13 und/oder der Halteklammer 30 aus fünf oder mehr Lagen möglich, wobei sich Metall- und Dämpfungsschichten abwechseln.In a corresponding manner, therefore, a multi-layered design of the retaining clip 30 can be realized. Furthermore, embodiments of the damping composite elements 11, 12, 13 and / or the retaining clip 30 of five or more layers are possible, with alternate metal and damping layers.

Somit lassen sich je nach Ausgestaltung wesentliche Vorteile erzielen. Es ist eine teilweise oder vollständige Entkopplung der Brennstoffeinspritzventile 3, 4 von dem Brennstoffverteiler 2 möglich. Hierdurch kommt es zu einer erheblichen Reduzierung der Körperschallübertragung in den Brennstoffverteiler 2 und damit in die Anbaustruktur 5 bei gleichzeitiger Erfüllung der Funktions- und Festigkeitsanforderungen.Thus, depending on the design, significant advantages can be achieved. A partial or complete decoupling of the fuel injection valves 3, 4 from the fuel distributor 2 is possible. This results in a significant reduction in structure-borne sound transmission in the fuel distributor 2 and thus in the mounting structure 5 while fulfilling the functional and strength requirements.

Eine Geräuschemission des Brennstoffverteilers 2 nimmt somit ab.A noise emission of the fuel distributor 2 thus decreases.

Außerdem kann eine vergleichsweise steife Anbindung der Brennstoffeinspritzventile 3, 4 trotz der Entkopplung erzielt werden. Denn die Nachgiebigkeit der Brennstoffeinspritzventile 3, 4 relativ zu den Tassen 9, 10 erhöht sich nur geringfügig, so dass alle Funktionsanforderungen, insbesondere eine geringe Relativbewegung der Brennstoffeinspritzventile 3, 4, und Festigkeitsanforderungen, insbesondere bezüglich eines Verschleißes eines O-Dichtrings, erfüllt sind. Dadurch können gleichzeitig Akustik-, Funktions- und Festigkeitsanforderungen erfüllt werden, die sich aus dem Design der Brennstoffeinspritzventile 3, 4 und des Brennstoffverteilers 2 ergeben.In addition, a comparatively rigid connection of the fuel injection valves 3, 4 can be achieved despite the decoupling. For the compliance of the fuel injection valves 3, 4 relative to the cups 9, 10 increases only slightly, so that all functional requirements, in particular a small relative movement of the fuel injection valves 3, 4, and strength requirements, in particular with respect to wear of an O-ring are met. As a result, acoustic, functional and strength requirements that result from the design of the fuel injection valves 3, 4 and of the fuel distributor 2 can be met at the same time.

Die Dämpfungsschichten 27, 28, 37, 41 können insbesondere aus einem Elastomer gebildet sein und durch Vulkanisieren mit den Metallschichten 25, 26, 35, 36, 39, 40 verbunden sein. Speziell ist eine Verbindung durch Vulkanisieren möglich. Außerdem kann eine innenliegende Dämpfungsschicht 27, wie sie unter anderem anhand der Fig. 4 beschrieben ist, zuverlässig vor Abrasion und anderen Umwelteinflüsse geschützt werden.The damping layers 27, 28, 37, 41 may in particular be formed from an elastomer and be connected by vulcanization to the metal layers 25, 26, 35, 36, 39, 40. Specifically, a compound by vulcanization is possible. In addition, an inner damping layer 27, as shown inter alia on the basis of Fig. 4 is reliably protected against abrasion and other environmental influences.

Außerdem ist der Montageaufwand gering, da die Dämpfungsverbundelemente 11, 12, 13 lediglich vor der Montage der Brennstoffeinspritzventile 3, 4 eingelegt werden müssen und die Halteklammer 30 in der Montagerichtung 31 aufgeclipst werden kann.In addition, the assembly effort is low because the damping composite elements 11, 12, 13 must be inserted only before the assembly of the fuel injection valves 3, 4 and the retaining clip 30 can be clipped in the mounting direction 31.

Die Eigenschaften der Dämpfungsschichten 27, 28, 37, 41 können über die Dicke und/oder die Materialeigenschaften hinsichtlich einiger Optimierungsparameter angepasst werden. Als Optimierungsparameter können vor allem die zu bedämpfenden Frequenzinhalte und die Temperatur herangezogen werden.The properties of the damping layers 27, 28, 37, 41 can be adapted via the thickness and / or the material properties with regard to some optimization parameters. The optimization parameters that can be used are, in particular, the frequency contents to be damped and the temperature.

Ferner können die Eigenschaften einer außenliegenden Dämpfungsschicht 27, 28, wie es unter anderem anhand der Fig. 6 und 7 beschrieben ist, durch eine geometrische Gestaltung beeinflusst werden. Speziell kann eine Profilierung oder Mikroprofilierung an einer außenliegenden Dämpfungsschicht 27, 28 vorgesehen sein. Beispielsweise können nach außen gerichtete Noppen vorgesehen sein. Dadurch kann die Dämpfungswirkung gegebenenfalls weiter erhöht werden.Furthermore, the properties of an outer damping layer 27, 28, as shown, inter alia, with reference to 6 and 7 is described, are influenced by a geometric design. Specifically, a profiling or micro-profiling on an outer damping layer 27, 28 may be provided. For example, outwardly directed nubs may be provided. As a result, the damping effect can optionally be increased further.

Die Dämpfungsverbundelemente 11, 12, 13 können als ring- oder teilringförmige Dämpfungsverbundelemente 11, 12, 13 ausgestaltet sein. Bei einer teilringförmigen Ausgestaltung können auch mehrere Dämpfungsverbundelemente über den Umfang verteilt vorgesehen sein. Entsprechend können über den Umfang auch mehrere Halteklammern, die der Halteklammer 30 entsprechen, vorgesehen sein.The damping composite elements 11, 12, 13 may be designed as annular or partially annular damping composite elements 11, 12, 13. In a partially annular design, a plurality of damping composite elements distributed over the circumference may be provided. Accordingly, a plurality of retaining clips corresponding to the retaining clip 30 may be provided over the circumference.

Die Erfindung ist nicht auf die beschriebenen Ausführungsbeispiele beschränkt.The invention is not limited to the described embodiments.

Claims (11)

  1. Arrangement (1), in particular fuel injection system for high-pressure injection in internal combustion engines, having a fuel distributor (2) and having multiple fuel injection valves (3, 4), wherein each of the fuel injection valves (3, 4) is arranged on a cup (9, 10) of the fuel distributor (2), and wherein at least one of the fuel injection valves (3, 4) is fastened to the associated cup (9) by way of at least one holding element (30),
    characterized
    in that a contact surface (19) is provided on an outer side (18) of the cup (9), in that a support surface (17) is formed on an underside (16) of the cup (9), in that the holding element (30) is in the form of a holding clamp (30), in that a contact surface (21) is provided on an outer side (20) of the fuel injection valve (3), in that the holding clamp (30) engages, at one side, behind the contact surface (19) of the cup (9) and, at the other side, behind the contact surface (21) of the fuel injection valve (3) and forces the fuel injection valve (3) against the support surface (17), and in that at least one damping composite element (11, 13) is arranged between the fuel injection valve (3) and the support surface (17) of the cup (9) and/or between the contact surface (21) of the fuel injection valve (3) and the holding clamp (30).
  2. Arrangement according to Claim 1,
    characterized
    in that the contact surface (19) of the cup (9) and the contact surface (21) of the fuel injection valve (3) are averted from one another, and/or in that the contact surface (19) of the cup (9) and the support surface (17) of the cup (9) are averted from one another.
  3. Arrangement according to Claim 1 or 2,
    characterized
    in that, on the outer side (18) of the cup (9), there is formed an at least ring segment-shaped shoulder (22) of the cup (9), on which shoulder the contact surface (19) of the cup (9) is formed, and/or in that, on the fuel injection valve (3), there is formed an at least ring segment-shaped collar (23), on which the contact surface (21) of the fuel injection valve (3) and a support surface (24), which faces toward the support surface (17) of the cup (9), are formed.
  4. Arrangement according to Claim 3,
    characterized
    in that at least one of the damping composite elements (11, 13) has a bent outer section (42, 43) which engages around an outer side (38) of the collar (23).
  5. Arrangement according to Claim 3 or 4,
    characterized
    in that at least one of the damping composite elements (11, 13) is in the form of an at least approximately planar damping composite element (11, 13) and projects beyond an outer side (38) of the collar.
  6. Arrangement according to one of Claims 3 to 5,
    characterized
    in that at least one of the damping composite elements (11, 13) is in the form of a ring-shaped or ring segment-shaped damping composite element (11, 13).
  7. Arrangement according to one of Claims 3 to 6,
    characterized
    in that the damping composite element (11) is arranged between the support surface (24) of the fuel injection valve (3) and the support surface (17) of the cup (9).
  8. Arrangement according to one of Claims 1 to 7,
    characterized
    in that a first of the damping composite elements (11) is arranged between the fuel injection valve (3) and the support surface (17) of the cup (9), and in that a second of the damping composite elements (13) is arranged between the contact surface (21) of the fuel injection valve (3) and the holding clamp (30).
  9. Arrangement according to one of Claims 1 to 8,
    characterized
    in that the holding clamp (30) is formed from a composite plate (30) with at least one metal layer (35, 36) and at least one damping layer (37).
  10. Arrangement according to one of Claims 1 to 8,
    characterized
    in that the holding clamp (30) is formed from at least one rigid material.
  11. Arrangement according to one of Claims 1 to 10,
    characterized
    in that the damping composite element (11, 12, 13) has at least one metal layer (25, 26, 35, 36) and at least one damping layer (27, 28, 37).
EP13715934.9A 2012-04-26 2013-04-02 Arrangement with a fuel distributer and multiple fuel injection valves Active EP2841761B1 (en)

Applications Claiming Priority (2)

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DE102012206890A DE102012206890A1 (en) 2012-04-26 2012-04-26 Arrangement with a fuel distributor and a plurality of fuel injection valves
PCT/EP2013/056850 WO2013160068A1 (en) 2012-04-26 2013-04-02 Arrangement with a fuel distributer and multiple fuel injection valves

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EP (1) EP2841761B1 (en)
KR (1) KR102074651B1 (en)
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US8087398B2 (en) * 2009-06-02 2012-01-03 Hitachi Automotive Systems Americas Inc. Fuel system for a direct injection internal combustion engine
EP2292920B1 (en) * 2009-07-24 2013-09-11 Continental Automotive GmbH Coupling device
US8397696B2 (en) * 2010-02-02 2013-03-19 Continental Automotive Systems Us, Inc. Comprehensive fuel pressure damper
US8813722B2 (en) * 2010-08-09 2014-08-26 Hitachi Automotive Products (Usa) Fuel injector holder
US8739763B2 (en) * 2011-02-16 2014-06-03 Hitachi Automotive Systems Americas Inc. Fuel injector assembly
DE102012206931A1 (en) * 2012-04-26 2013-10-31 Robert Bosch Gmbh Arrangement with a fuel distributor and a holder
DE102012208039A1 (en) * 2012-05-14 2013-11-14 Robert Bosch Gmbh Arrangement with a fuel distributor and a plurality of fuel injection valves

Also Published As

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US10184437B2 (en) 2019-01-22
WO2013160068A1 (en) 2013-10-31
KR20150003757A (en) 2015-01-09
US20150083082A1 (en) 2015-03-26
EP2841761A1 (en) 2015-03-04
CN104246205B (en) 2017-06-20
DE102012206890A1 (en) 2013-10-31
KR102074651B1 (en) 2020-03-02
CN104246205A (en) 2014-12-24

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