EP2948674B1 - Fuel injection system comprising a fuel-guiding component, a fuel injection valve and a mounting - Google Patents
Fuel injection system comprising a fuel-guiding component, a fuel injection valve and a mounting Download PDFInfo
- Publication number
- EP2948674B1 EP2948674B1 EP14700405.5A EP14700405A EP2948674B1 EP 2948674 B1 EP2948674 B1 EP 2948674B1 EP 14700405 A EP14700405 A EP 14700405A EP 2948674 B1 EP2948674 B1 EP 2948674B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- fuel injection
- elastically deformable
- shaped
- injection valve
- 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.)
- Not-in-force
Links
- 239000000446 fuel Substances 0.000 title claims description 125
- 238000002347 injection Methods 0.000 title claims description 62
- 239000007924 injection Substances 0.000 title claims description 62
- 238000002485 combustion reaction Methods 0.000 claims description 6
- 238000011144 upstream manufacturing Methods 0.000 claims 1
- 239000000725 suspension Substances 0.000 description 21
- 238000003466 welding Methods 0.000 description 3
- 238000007906 compression Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 208000034656 Contusions Diseases 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
Images
Classifications
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- 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
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- 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
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- 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
- F02M2200/16—Sealing of fuel injection apparatus not otherwise provided for
-
- 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
- F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
- F02M2200/306—Fuel-injection apparatus having mechanical parts, the movement of which is damped using mechanical means
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- 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
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
- F02M2200/85—Mounting of fuel injection apparatus
- F02M2200/856—Mounting of fuel injection apparatus characterised by mounting injector to fuel or common rail, or vice versa
Definitions
- the invention relates to a suspension for fuel injection systems for connecting a fuel injection valve with a fuel-carrying component and a fuel injection system with such a suspension. Specifically, the invention relates to the field of fuel injection systems for mixture-compression, spark-ignition internal combustion engines.
- the known fuel injection device comprises a fuel injection valve, a receiving bore for the fuel injection valve in a cylinder head and a fuel distributor line with a connecting piece.
- the fuel injection valve is partially inserted.
- the fuel injection valve has a wire ring inserted in a groove in the region of its inlet neck.
- a connecting body in the form of a lock nut is provided, which is screwed onto an external thread on the circumference of the connecting piece.
- the connecting body has a section containing an internal thread, to which a ring collar adjoins, which has a curved support surface in the form of a ball socket. With this support surface, the annular collar of the connecting body is supported on the wire ring, which is received with its curvature in the annular collar.
- the from the DE 10 2005 020 380 A1 known configuration of the fuel injection device has the disadvantage that vibrations can be transmitted via the wire ring between the connecting piece and the inlet nozzle of the fuel injection valve. Specifically, vibrations from the fuel injector can be transmitted to the port.
- valve plug a conspicuous and disturbing contribution to the overall noise of the engine can be made, which can be described as a valve plug.
- a valve leakage is caused by the rapid opening and closing of the fuel injection valve, in which the valve needle is adjusted with high dynamics in the respective end stops.
- the impact of the valve needle in the end stops leads to short-acting, but very high contact forces, which are transmitted via a housing of the fuel injection valve to the cylinder head and a fuel rail in the form of structure-borne noise and vibrations. This leads to the cylinder head and the fuel rail to a strong noise.
- Another example is from the document WO 2013/160068 A1 (according to Art. 54.3 EPC).
- the suspension according to the invention with the features of claim 1 and the fuel injection system according to the invention with the features of claim 8 have the advantage that an improved suspension of the fuel injection valve to the fuel-carrying component is made possible.
- a noise reduction by targeted decoupling is possible.
- a soft connection of the fuel injection valve to the fuel-carrying component can be achieved, which allows a noise reduction of the entire system with the fuel injection system.
- the suspension and fuel injection system are suitable for gasoline direct injection applications.
- the fuel-carrying component is in this case preferably designed as a fuel distributor, in particular as a fuel distributor strip.
- a fuel distributor can on the one hand serve to distribute 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 injectors are then preferably connected to the fuel manifold via corresponding hangers. During operation, the fuel injection valves then inject the fuel necessary for the combustion process under high pressure into the respective combustion space.
- 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 fuel injection valve in particular the fuel nozzle, is not part of the suspension according to the invention.
- the suspension according to the invention can also be manufactured and sold separately from the fuel injection valve.
- the connection body may be part of a fuel-carrying component.
- the connection body can be designed as part of a cup of a fuel distributor strip. In this case, however, the connection body can also be connected at a later time to a tubular base body or the like of the fuel distributor strip, for example by welding.
- the suspension according to the invention is not necessarily part of the entire fuel-carrying component and can also be manufactured and sold independently of such other components of a fuel-carrying component.
- a soft connection of the fuel injection valve to the fuel-carrying component in particular a fuel distributor, can be achieved.
- the soft connection of the fuel injection valve to the fuel-carrying component can in this case be carried out with a target stiffness of not more than 50 kN / mm, the strength requirements over the lifetime can be met.
- the advantage of the soft suspension is a significant reduction of the transmitted structure-borne sound from the fuel injection valve to the fuel-carrying component and, associated with this, a reduction in the noise of the injection system.
- this noise-reducing measure can be used in addition to other noise-reducing measures, such as a hydraulic throttle at the valve inlet and a soft Railverschraubung.
- the suspension can advantageously be used without or with only minor structural changes in existing constructions. This results in a broad scope.
- a contact surface is configured, which is designed conically with respect to a longitudinal axis of the receiving space and facing the receiving space. Due to the conical contact surface, in particular with respect to the longitudinal axis can have an opening angle from a range of about 10 ° to about 80 °, in particular of at least approximately 45 °, an advantageous centering is guaranteed.
- an angular tolerance compensation for the fuel injection valve with respect to the longitudinal axis of the receiving space can be ensured.
- the angle tolerance compensation can also be used here be realized by an elastic deformation of the elastically deformable element. An orientation of the elastically deformable element with respect to the longitudinal axis of the receiving space and thus the orientation of the fuel nozzle of the fuel injection valve takes place at least indirectly via the conical contact surface.
- annular support member is provided and that the elastically deformable element is supported by means of the annular support member on the inner collar of the fitting.
- the conical contact surface is provided on the inner collar of the connecting piece.
- the annular support element in this case preferably has a rounded outer contour with respect to the contact surface of the inner collar.
- the annular support member has an annular recess into which the elastically deformable element is at least partially inserted.
- a mechanical protection is ensured, wherein in particular a local overstress is prevented.
- a uniform application of force and thus a homogeneous loading of the elastically deformable element is ensured.
- the elastically deformable element is thereby reliably positioned. Bruising of the elastically deformable element due to incorrect positioning, improper installation, pinching in places, kinks or the like are thereby prevented from the outset.
- the annular recess of the annular support member is designed to be open inwardly.
- an elastic deformability of the elastically deformable element also in the radial direction allows, as a radial support is ensured on the annular support member.
- a direct contact between the annular support member and an outer side of the fuel nozzle can be avoided.
- deformation of the elastically deformable element can still be limited.
- a support surface is configured, that an annular angle element is provided which has an L-shaped profile, in which the elastically deformable element is at least partially inserted, and that the fuel nozzle is supported at least by means of the annular angular element on the elastically deformable element.
- the annular angle element also allows mechanical protection of the elastically deformable element. In particular, a homogeneous force is introduced into the elastically deformable element. In addition, a local overuse of the elastically deformable element is prevented from the outset. Also wear due to friction or the like, which is in principle possible on an outer side of the elastically deformable element by abrasion or shear, is thereby prevented.
- annular angle element bears against an outer side of the fuel nozzle.
- a reliable fixation of the annular angle element is made possible on the fuel nozzle, so that vibrations are transmitted directly to the elastically deformable element.
- Contact noise between the annular angle element and the fuel nozzle are thus prevented from the outset.
- the element connected to the fuel nozzle is materially connected to the fuel nozzle.
- the element connected to the fuel stub may be configured as a disk-shaped element that is welded to the fuel stub.
- a U-shaped connection bracket is provided, that the connection piece is connected via the U-shaped connection bracket with the connection body, that the connection body has on its outside at least one recess, that the connection piece has on its inside at least one recess , which is associated with the recess of the connection body, that the U-shaped connection bracket engages inside the at least one recess of the connection body and outside in the at least one recess of the connector and that the U-shaped connection bracket is oriented at least approximately perpendicular to a longitudinal axis of the receiving space ,
- the preferably pot-shaped connection piece can be applied to the fuel nozzle.
- the elastically deformable element can be mounted. Subsequently, for example, the disk-shaped element can be connected by welding to the fuel nozzle. After this pre-assembly, the fuel stub can be positioned with the fitting on the fuel-carrying component.
- the connector is suitably positioned on the connector body, so that the U-shaped connecting bracket into the recess of the connection body and in the recess of the connector can be inserted. Furthermore, in this case also a simple disassembly is possible, which may be required, for example, in the context of maintenance.
- the connecting piece can also be designed in the form of a union nut. In this way, also a releasable connection between the fuel injection valve and the fuel-carrying component can be achieved.
- Fig. 1 shows a fuel injection system 1 with a suspension 2 in an excerpt, schematic sectional view according to a first embodiment.
- the fuel injection system 1 can be used in particular for high-pressure injection in internal combustion engines.
- the fuel injection system 1 can be used in mixture-compression, spark-ignited internal combustion engines.
- the suspension 2 is particularly suitable for such a fuel injection system. 1
- the fuel injection system 1 has a fuel-carrying component 3, which is designed in this embodiment as a fuel distributor strip 3.
- the fuel distributor strip 3 has a tubular main body 4 and a connection body 5.
- an elongate fuel chamber 6 is formed, from which a branched channel 7 guided through the connecting body 5 branches off.
- further connecting bodies are preferably attached to the tubular base body 4, which are designed in accordance with the connection body 5.
- the connection body 5 is in this case part of the suspension 2.
- the connection body 5 can be connected in a suitable manner to the tubular base body 4.
- the tubular base body 4 is not necessarily part of the suspension 2, because the suspension 2 with the connection body 5 can also be manufactured and distributed independently of the tubular base body 4.
- connection body 5 As part of a pre-assembly of the connection body 5 can be connected together with other appropriately designed connection bodies with the tubular base body 4, which is possible for example by welding.
- the connection body 5 has an external thread 8 in this exemplary embodiment.
- the suspension 2 has a connection piece 9 with an internal thread 10. At least in the region of the internal thread 10, the connecting piece 9 is designed tubular.
- the connecting piece 9 on an end face 11 an inner collar 12.
- the connector 9 is screwed with its internal thread 10 on the external thread 8 of the connector body 5.
- the connector 9 is thus configured in this embodiment in the form of a union nut 9.
- the connection body 5 is configured in this embodiment as a rail cup 5.
- a receiving space 15 is formed within the connecting body 5 and the connecting piece 9, in which a fuel nozzle 16 of a fuel injection valve 17 of the fuel injection system 1 is partially arranged.
- the fuel nozzle 16 has a collar 18, on which an inlet for the fuel is provided to guide the fuel from the connecting channel 7 into a fuel chamber 19 in the interior of the fuel injection valve 17.
- a sealing ring 20 is provided, which is located between the fuel nozzle 16 and the connection body 5 to form a seal.
- the sealing ring 20 is in this case between the collar 18 and a support ring 21.
- the support ring 21 encloses a tapered portion of the fuel nozzle 16th
- a contact surface 22 is configured.
- the contact surface 22 in this case faces the receiving space 15. Furthermore, the contact surface 22 is designed conically with respect to a longitudinal axis 23 of the receiving space 15. An opening angle for the contact surface 22 may be, for example, about 45 °.
- annular support member 24 is provided, on which a rounded edge 25 is configured.
- the annular support member 24 is disposed in the receiving space 15 and surrounds the fuel nozzle 16.
- the rounded edge 25 of the annular support member 24 in this case the contact surface 22 of the inner collar 18 faces.
- the annular support member 24 is supported on the contact surface 22 of the inner collar 18.
- the annular support member 24 also has an annular recess 26.
- the annular recess 26 is in this case designed to be open inwardly. This means that the annular recess 26 is configured open to the fuel nozzle 16. In the annular recess 26, an elastically deformable element 27 is partially inserted.
- the elastically deformable element 27 is indirectly supported on the inner collar 18 in this embodiment.
- the elastically deformable element 27 may also be supported directly on the inner collar 12 of the connecting piece 9.
- annular member 30 is provided, which is connected via a weld 31 with the fuel nozzle 16.
- the annular element 30 may also be designed as a snap ring 30 or be connected in some other way to the fuel nozzle 16.
- a support surface 32 is configured on the annular member 30, a support surface 32 is configured. In a modified embodiment, however, the support surface 32 may also be configured directly on the fuel stub 16, in particular a collar of the fuel stub 16.
- annular angle element 33 which has an L-shaped profile into which the elastically deformable element 27 is partially inserted.
- the elastically deformable element 27 has a rectangular, in particular square, profile and is of annular design.
- the elastically deformable member 27 is disposed between the annular winking element 33 and the annular support member 24.
- the elastically deformable member 27 is supported by the annular angle member 33 on the support surface 32 of the annular member 30.
- the elastically deformable element 27 is indirectly supported on the support surface 32 of the annular element 30.
- the elastically deformable element 27 may also be supported directly on the support surface 32 of the annular element 30.
- the annular angle element 33 abuts in this embodiment on an outer side 34 of the fuel nozzle 16. As a result, a stationary positioning of the annular angle element 33 is ensured on the fuel nozzle 16.
- the fuel nozzle 16 is supported at least on the elastically deformable element 27 on the inner collar 18 of the connecting piece 9. Direct contact between the connector 9 and the fuel nozzle 16 is avoided. Thus, vibrations are significantly attenuated. Therefore, an elastic mounting of the fuel injection valve 17 can be realized in an advantageous manner.
- the elastically deformable element 27 can in this case be realized by a wire mesh, a plate spring, a special spring or in other ways.
- the elastically deformable element 27 can in this case be designed so that it also acts as an angle tolerance compensation element 27.
- Fig. 2 shows a fuel injection system 1 with a suspension 2 in an excerpt, schematic sectional view according to a known example.
- the connection body 5 at its Outside 40 recesses 41, 42 on.
- the connection piece 9 has recesses 44, 45 on its inside 43.
- the recess 44 of the connection piece 9 is in this case associated with the recess 41 of the connection body 5.
- the recess 45 of the connection piece 9 is associated with the recess 42 of the connection body 5.
- the recess 41 of the connecting body 5 and the recess 44 of the connecting piece 9 form a cylindrical space in which an arm 46 of a U-shaped connecting bracket 47 is inserted.
- the recess 45 of the connecting piece 9 and the recess 42 of the connecting body 5 form a cylindrical space in which a further arm 48 of the U-shaped connecting bracket 47 is inserted.
- the U-shaped connecting bracket 47 is in this case oriented perpendicular to the longitudinal axis 23 of the receiving space 15. This means that the two arms 46, 48 lie in a plane which is oriented perpendicular to the longitudinal axis 23.
- the connector 9 is connected via the U-shaped connecting bracket 47 to the connector body 5.
- the connector 9 is configured in this embodiment as a cup-shaped connector 9.
- Fig. 3 shows the in Fig. 2 illustrated U-shaped connecting bracket 47 in a schematic representation.
- the arm 46 is in this case connected via a curved connecting portion 49 with the further arm 48.
- An inner side 50 of the bent connecting portion 49 may in this case form a stop for the assembly.
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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
Die Erfindung betrifft eine Aufhängung für Brennstoffeinspritzanlagen zur Verbindung eines Brennstoffeinspritzventils mit einer Brennstoff führenden Komponente und eine Brennstoffeinspritzanlage mit solch einer Aufhängung. Speziell betrifft die Erfindung das Gebiet der Brennstoffeinspritzanlagen für gemischverdichtende, fremdgezündete Brennkraftmaschinen.The invention relates to a suspension for fuel injection systems for connecting a fuel injection valve with a fuel-carrying component and a fuel injection system with such a suspension. Specifically, the invention relates to the field of fuel injection systems for mixture-compression, spark-ignition internal combustion engines.
Aus der
Die aus der
Speziell bei elektromagnetischen Hochdruck-Einspritzventilen, die bei Otto-Motoren mit Direkteinspritzung zum Einsatz kommen, kann ein auffälliger und störender Beitrag zum Gesamtgeräusch des Motors geleistet werden, der als Ventiltickern beschreibbar ist. Solch ein Ventiltickern entsteht durch das schnelle Öffnen und Schließen des Brennstoffeinspritzventils, bei dem die Ventilnadel mit hoher Dynamik in die jeweiligen Endanschläge verstellt wird. Das Auftreffen der Ventilnadel in den Endanschlägen führt zu kurzzeitig wirkenden, aber sehr hohen Kontaktkräften, die über ein Gehäuse des Brennstoffeinspritzventils an den Zylinderkopf und eine Brennstoffverteilerleiste in Form von Körperschall und Schwingungen übertragen werden. Dies führt am Zylinderkopf und an der Brennstoffverteilerleiste zu einer starken Geräuschentwicklung. Ein anderes Beispiel ist aus dem Dokument
Die erfindungsgemäße Aufhängung mit den Merkmalen des Anspruchs 1 und die erfindungsgemäße Brennstoffeinspritzanlage mit den Merkmalen des Anspruchs 8 haben den Vorteil, dass eine verbesserte Aufhängung des Brennstoffeinspritzventils an der Brennstoff führenden Komponente ermöglicht ist. Hierbei ist eine Geräuschreduzierung durch eine gezielte Entkopplung möglich. Speziell kann eine weiche Anbindung des Brennstoffeinspritzventils an die Brennstoff führende Komponente erzielt werden, was eine Geräuschreduzierung des Gesamtsystems mit der Brennstoffeinspritzanlage ermöglicht.The suspension according to the invention with the features of claim 1 and the fuel injection system according to the invention with the features of
Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen der im Anspruch 1 angegebenen Aufhängung und der im Anspruch 8 angegebenen Brennstoffeinspritzanlage möglich.The measures listed in the dependent claims advantageous refinements of the claim 1 suspension and the fuel injection system specified in
Speziell eignen sich die Aufhängung und die Brennstoffeinspritzanlage für Anwendungen zur Benzindirekteinspritzung. Die Brennstoff führende Komponente ist hierbei vorzugsweise als Brennstoffverteiler, insbesondere als Brennstoffverteilerleiste, ausgebildet. Solch ein 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 dann vorzugsweise über sich entsprechende Aufhängungen mit dem Brennstoffverteiler verbunden. Im Betrieb spritzen die Brennstoffeinspritzventile den zum Verbrennungsvorgang notwendigen Brennstoff dann unter hohem Druck in den jeweiligen Verbrennungsraum ein. Der Brennstoff wird hierbei über eine Hochdruckpumpe verdichtet und mengengesteuert über eine Hochdruckleitung in den Brennstoffverteiler gefördert.Specifically, the suspension and fuel injection system are suitable for gasoline direct injection applications. The fuel-carrying component is in this case preferably designed as a fuel distributor, in particular as a fuel distributor strip. Such a fuel distributor can on the one hand serve to distribute 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 injectors are then preferably connected to the fuel manifold via corresponding hangers. During operation, the fuel injection valves then inject the fuel necessary for the combustion process under high pressure into the respective combustion space. 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.
Das Brennstoffeinspritzventil, insbesondere der Brennstoffstutzen, ist kein Bestandteil der erfindungsgemäßen Aufhängung. Insbesondere kann die erfindungsgemäße Aufhängung auch getrennt von dem Brennstoffeinspritzventil hergestellt und vertrieben werden. Der Anschlusskörper kann Bestandteil einer Brennstoff führenden Komponente sein. Insbesondere kann der Anschlusskörper als Teil einer Tasse einer Brennstoffverteilerleiste ausgestaltet sein. Hierbei kann der Anschlusskörper allerdings auch zu einem späteren Zeitpunkt mit einem rohrförmigen Grundkörper oder dergleichen der Brennstoffverteilerleiste verbunden werden, beispielsweise durch Schweißen. Somit ist die erfindungsgemäße Aufhängung nicht notwendigerweise Bestandteil der gesamten Brennstoff führenden Komponente und kann auch unabhängig von solchen weiteren Bauteilen einer Brennstoff führenden Komponente hergestellt und vertrieben werden.The fuel injection valve, in particular the fuel nozzle, is not part of the suspension according to the invention. In particular, the suspension according to the invention can also be manufactured and sold separately from the fuel injection valve. The connection body may be part of a fuel-carrying component. In particular, the connection body can be designed as part of a cup of a fuel distributor strip. In this case, however, the connection body can also be connected at a later time to a tubular base body or the like of the fuel distributor strip, for example by welding. Thus, the suspension according to the invention is not necessarily part of the entire fuel-carrying component and can also be manufactured and sold independently of such other components of a fuel-carrying component.
Insbesondere kann eine weiche Anbindung des Brennstoffeinspritzventils an die Brennstoff führende Komponente, insbesondere einen Brennstoffverteiler, erzielt werden. Durch eine weiche Gestaltung dieser Schnittstelle ist eine wesentliche Geräuschreduzierung des Gesamtsystems mit der Brennstoffeinspritzanlage möglich. Die weiche Anbindung des Brennstoffeinspritzventils an die Brennstoff führende Komponente kann hierbei mit einer Zielsteifigkeit von nicht mehr als 50 kN/mm erfolgen, wobei die Festigkeitanforderungen über die Lebenszeit eingehalten werden können. Der Vorteil der weichen Aufhängung ist eine deutliche Reduzierung des übertragenen Körperschalls vom Brennstoffeinspritzventil zu der Brennstoff führenden Komponente und damit verbunden eine Reduzierung des Geräusches des Einspritzsystems. Außerdem kann diese geräuschreduzierende Maßnahme zusätzlich zu weiteren geräuschreduzierenden Maßnahmen, wie beispielsweise einer hydraulischen Drossel am Ventileinlass und einer weichen Railverschraubung, zum Einsatz kommen. Ferner kann die Aufhängung in vorteilhafter Weise ohne oder nur mit geringfügigen konstruktiven Änderungen bei bestehenden Konstruktionen zum Einsatz kommen. Dadurch ergibt sich ein breiter Anwendungsbereich.In particular, a soft connection of the fuel injection valve to the fuel-carrying component, in particular a fuel distributor, can be achieved. By a soft design of this interface, a substantial noise reduction of the entire system with the fuel injection system is possible. The soft connection of the fuel injection valve to the fuel-carrying component can in this case be carried out with a target stiffness of not more than 50 kN / mm, the strength requirements over the lifetime can be met. The advantage of the soft suspension is a significant reduction of the transmitted structure-borne sound from the fuel injection valve to the fuel-carrying component and, associated with this, a reduction in the noise of the injection system. In addition, this noise-reducing measure can be used in addition to other noise-reducing measures, such as a hydraulic throttle at the valve inlet and a soft Railverschraubung. Furthermore, the suspension can advantageously be used without or with only minor structural changes in existing constructions. This results in a broad scope.
Vorteilhaft ist es, dass an dem innenliegenden Kragen des Anschlussstücks eine Anlagefläche ausgestaltet ist, die in Bezug auf eine Längsachse des Aufnahmeraums konisch ausgestaltet ist und dem Aufnahmeraum zugewandt ist. Durch die konische Anlagefläche, die insbesondere in Bezug auf die Längsachse einen Öffnungswinkel aus einem Bereich von etwa 10° bis etwa 80°, insbesondere von zumindest näherungsweise 45°, haben kann, ist eine vorteilhafte Zentrierung gewährleistet. Außerdem kann bei einer geeigneten Gestaltung des Winkels der konischen Anlagefläche ein Winkeltoleranzausgleich für das Brennstoffeinspritzventil in Bezug auf die Längsachse des Aufnahmeraums gewährleistet werden. Der Winkeltoleranzausgleich kann hierbei auch durch eine elastische Verformung des elastisch verformbaren Elements realisiert werden. Über die konische Anlagefläche erfolgt zumindest mittelbar eine Ausrichtung des elastisch verformbaren Elements bezüglich der Längsachse des Aufnahmeraums und somit die Ausrichtung des Brennstoffstutzens des Brennstoffeinspritzventils.It is advantageous that on the inner collar of the connecting piece a contact surface is configured, which is designed conically with respect to a longitudinal axis of the receiving space and facing the receiving space. Due to the conical contact surface, in particular with respect to the longitudinal axis can have an opening angle from a range of about 10 ° to about 80 °, in particular of at least approximately 45 °, an advantageous centering is guaranteed. In addition, with a suitable design of the angle of the conical contact surface, an angular tolerance compensation for the fuel injection valve with respect to the longitudinal axis of the receiving space can be ensured. The angle tolerance compensation can also be used here be realized by an elastic deformation of the elastically deformable element. An orientation of the elastically deformable element with respect to the longitudinal axis of the receiving space and thus the orientation of the fuel nozzle of the fuel injection valve takes place at least indirectly via the conical contact surface.
Vorteilhaft ist es auch, dass ein ringförmiges Stützelement vorgesehen ist und dass das elastisch verformbare Element mittels des ringförmigen Stützelements an dem innenliegenden Kragen des Anschlussstücks abgestützt ist. Dies ist besonders vorteilhaft, wenn zusätzlich auch die konische Anlagefläche an dem innenliegenden Kragen des Anschlussstücks vorgesehen ist. Dadurch wird eine Ausrichtung des ringförmigen Stützelements bezüglich der Längsachse des Aufnahmeraums erzielt. Das ringförmige Stützelement weist hierbei in Bezug auf die Anlagefläche des innenliegenden Kragens vorzugsweise eine abgerundete Außenkontur auf. Dadurch ist ein Toleranzausgleich an der Schnittstelle zwischen dem ringförmigen Stützelement und dem innenliegenden Kragen gewährleistet, wobei im Betrieb eine Selbstzentrierung erfolgt.It is also advantageous that an annular support member is provided and that the elastically deformable element is supported by means of the annular support member on the inner collar of the fitting. This is particularly advantageous if, in addition, the conical contact surface is provided on the inner collar of the connecting piece. As a result, an alignment of the annular support element with respect to the longitudinal axis of the receiving space is achieved. The annular support element in this case preferably has a rounded outer contour with respect to the contact surface of the inner collar. As a result, a tolerance compensation is ensured at the interface between the annular support member and the inner collar, wherein a self-centering occurs during operation.
Hierbei ist es ferner von Vorteil, dass das ringförmige Stützelement eine ringförmige Ausnehmung aufweist, in die das elastisch verformbare Element zumindest teilweise eingesetzt ist. Durch das Einsetzen des elastisch verformbaren Elements in die ringförmige Ausnehmung des ringförmigen Stützelements ist zum einen ein mechanischer Schutz gewährleistet, wobei insbesondere eine lokale Überbeanspruchung verhindert ist. Ferner ist eine gleichmäßige Krafteinleitung und somit eine homogene Beaufschlagung des elastisch verformbaren Elements gewährleistet. Ferner ist das elastisch verformbare Element hierdurch zuverlässig positioniert. Quetschungen des elastisch verformbaren Elements aufgrund einer Fehlpositionierung, einer unsachgemäßen Montage, stellenweiser Einklemmungen, Abknickungen oder dergleichen sind dadurch von vornherein verhindert.Here, it is also advantageous that the annular support member has an annular recess into which the elastically deformable element is at least partially inserted. By inserting the elastically deformable element into the annular recess of the annular support element, on the one hand, a mechanical protection is ensured, wherein in particular a local overstress is prevented. Furthermore, a uniform application of force and thus a homogeneous loading of the elastically deformable element is ensured. Furthermore, the elastically deformable element is thereby reliably positioned. Bruising of the elastically deformable element due to incorrect positioning, improper installation, pinching in places, kinks or the like are thereby prevented from the outset.
Besonders vorteilhaft ist es hierbei, dass die ringförmige Ausnehmung des ringförmigen Stützelements nach innen offen ausgestaltet ist. Hierdurch ist zum einen eine elastische Verformbarkeit des elastisch verformbaren Elements auch in radialer Richtung ermöglicht, da eine radiale Abstützung an dem ringförmigen Stützelement gewährleistet ist. Zum anderen kann hierdurch ein direkter Kontakt zwischen dem ringförmigen Stützelement und einer Außenseite des Brennstoffstutzens vermieden werden. Allerdings kann eine Verformung des elastisch verformbaren Elements dennoch begrenzt werden.It is particularly advantageous in this case that the annular recess of the annular support member is designed to be open inwardly. As a result, on the one hand, an elastic deformability of the elastically deformable element also in the radial direction allows, as a radial support is ensured on the annular support member. On the other hand, a direct contact between the annular support member and an outer side of the fuel nozzle can be avoided. However, deformation of the elastically deformable element can still be limited.
Außerdem ist es vorteilhaft, dass an dem Brennstoffstutzen oder an einem mit dem Brennstoffstutzen verbundenen Element eine Stützfläche ausgestaltet ist, dass ein ringförmiges Winkelelement vorgesehen ist, das ein L-förmiges Profil aufweist, in das das elastisch verformbare Element zumindest teilweise eingesetzt ist, und dass der Brennstoffstutzen zumindest mittels des ringförmigen Winkelelements an dem elastisch verformbaren Element abgestützt ist. Das ringförmige Winkelelement ermöglicht ebenfalls einen mechanischen Schutz des elastisch verformbaren Elements. Insbesondere wird eine homogene Krafteinleitung in das elastisch verformbare Element ermöglicht. Außerdem wird eine lokale Überbeanspruchung des elastisch verformbaren Elements von vornherein verhindert. Auch eine Abnutzung aufgrund von Reibung oder dergleichen, die prinzipiell an einer Außenseite des elastisch verformbaren Elements durch Abrieb oder Scherung möglich ist, wird dadurch verhindert.Moreover, it is advantageous that on the fuel nozzle or on a connected to the fuel nozzle element, a support surface is configured, that an annular angle element is provided which has an L-shaped profile, in which the elastically deformable element is at least partially inserted, and that the fuel nozzle is supported at least by means of the annular angular element on the elastically deformable element. The annular angle element also allows mechanical protection of the elastically deformable element. In particular, a homogeneous force is introduced into the elastically deformable element. In addition, a local overuse of the elastically deformable element is prevented from the outset. Also wear due to friction or the like, which is in principle possible on an outer side of the elastically deformable element by abrasion or shear, is thereby prevented.
Vorteilhaft ist es hierbei auch, dass das ringförmige Winkelelement an einer Außenseite des Brennstoffstutzens anliegt. Hierdurch ist eine zuverlässige Fixierung des ringförmigen Winkelelements an dem Brennstoffstutzen ermöglicht, so dass Schwingungen direkt auf das elastisch verformbare Element übertragen werden. Kontaktgeräusche zwischen dem ringförmigen Winkelelement und dem Brennstoffstutzen sind somit von vornherein verhindert.It is also advantageous here that the annular angle element bears against an outer side of the fuel nozzle. As a result, a reliable fixation of the annular angle element is made possible on the fuel nozzle, so that vibrations are transmitted directly to the elastically deformable element. Contact noise between the annular angle element and the fuel nozzle are thus prevented from the outset.
Vorteilhaft ist es auch, dass das mit dem Brennstoffstutzen verbundene Element stoffschlüssig mit dem Brennstoffstutzen verbunden ist. Beispielsweise kann das mit dem Brennstoffstutzen verbundene Element als scheibenförmiges Element ausgestaltet sein, das mit dem Brennstoffstutzen verschweißt ist.It is also advantageous that the element connected to the fuel nozzle is materially connected to the fuel nozzle. For example, the element connected to the fuel stub may be configured as a disk-shaped element that is welded to the fuel stub.
Vorteilhaft ist es auch, dass ein U-förmiger Verbindungsbügel vorgesehen ist, dass das Anschlussstück über den U-förmigen Verbindungsbügel mit dem Anschlusskörper verbunden ist, dass der Anschlusskörper an seiner Außenseite zumindest eine Aussparung aufweist, dass das Anschlussstück an seiner Innenseite zumindest eine Aussparung aufweist, die der Aussparung des Anschlusskörpers zugeordnet ist, dass der U-förmige Verbindungsbügel innen in die zumindest eine Aussparung des Anschlusskörpers und außen in die zumindest eine Aussparung des Anschlussstücks eingreift und dass der U-förmige Verbindungsbügel zumindest näherungsweise senkrecht zu einer Längsachse des Aufnahmeraums orientiert ist. Hierdurch ist eine einfache Montage ermöglicht. Bei dieser Montage kann das vorzugsweise topfförmige Anschlussstück auf den Brennstoffstutzen aufgebracht werden. Dann kann unter anderem das elastisch verformbare Element montiert werden. Anschließend kann beispielsweise das scheibenförmige Element durch Schweißen mit dem Brennstoffstutzen verbunden werden. Nach dieser Vormontage kann der Brennstoffstutzen zusammen mit dem Anschlussstück an der Brennstoff führenden Komponente positioniert werden. Hierbei wird das Anschlussstück geeignet an dem Anschlusskörper positioniert, so dass der U-förmige Verbindungsbügel in die Aussparung des Anschlusskörpers und in die Aussparung des Anschlussstücks eingefügt werden kann. Ferner ist hierbei auch eine einfache Demontage ermöglicht, die beispielsweise im Rahmen einer Wartung erforderlich sein kann.It is also advantageous that a U-shaped connection bracket is provided, that the connection piece is connected via the U-shaped connection bracket with the connection body, that the connection body has on its outside at least one recess, that the connection piece has on its inside at least one recess , which is associated with the recess of the connection body, that the U-shaped connection bracket engages inside the at least one recess of the connection body and outside in the at least one recess of the connector and that the U-shaped connection bracket is oriented at least approximately perpendicular to a longitudinal axis of the receiving space , As a result, a simple assembly is possible. In this assembly, the preferably pot-shaped connection piece can be applied to the fuel nozzle. Then, among other things, the elastically deformable element can be mounted. Subsequently, for example, the disk-shaped element can be connected by welding to the fuel nozzle. After this pre-assembly, the fuel stub can be positioned with the fitting on the fuel-carrying component. Here, the connector is suitably positioned on the connector body, so that the U-shaped connecting bracket into the recess of the connection body and in the recess of the connector can be inserted. Furthermore, in this case also a simple disassembly is possible, which may be required, for example, in the context of maintenance.
Bei einer abgewandelten Ausgestaltung kann das Anschlussstück auch in Form einer Überwurfmutter ausgestaltet sein. Hierdurch kann ebenfalls eine lösbare Verbindung zwischen dem Brennstoffeinspritzventil und der Brennstoff führenden Komponente erzielt werden.In a modified embodiment, the connecting piece can also be designed in the form of a union nut. In this way, also a releasable connection between the fuel injection valve and the fuel-carrying component can be achieved.
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 zeigen:
-
Fig. 1 eine Brennstoffeinspritzanlage mit einer Aufhängung in einer auszugsweisen, schematischen Schnittdarstellung entsprechend einem ersten Ausführungsbeispiel der Erfindung; -
Fig. 2 eine Brennstoffeinspritzanlage mit einer Aufhängung in einer auszugsweisen, schematischen Schnittdarstellung entsprechend einem bekannten Beispiel und -
Fig. 3 einen Verbindungsbügel der inFig. 2 dargestellten Aufhängung entsprechend dem bekannten Beispiel. Ausführungsformen der Erfindung
-
Fig. 1 a fuel injection system with a suspension in a partial, schematic sectional view according to a first embodiment of the invention; -
Fig. 2 a fuel injection system with a suspension in a partial, schematic sectional view according to a known example and -
Fig. 3 a connecting bracket of inFig. 2 shown suspension according to the known example. Embodiments of the invention
Die Brennstoffeinspritzanlage 1 weist eine Brennstoff führende Komponente 3 auf, die in diesem Ausführungsbeispiel als Brennstoffverteilerleiste 3 ausgestaltet ist. Die Brennstoffverteilerleiste 3 weist einen rohrförmigen Grundkörper 4 und einen Anschlusskörper 5 auf. In dem rohrförmigen Grundkörper 4 ist ein länglicher Brennstoffraum 6 ausgebildet, von dem ein durch den Anschlusskörper 5 geführter Verbindungskanal 7 abzweigt. Hierbei sind an dem rohrförmigen Grundkörper 4 vorzugsweise weitere Anschlusskörper angebracht, die entsprechend dem Anschlusskörper 5 ausgestaltet sind. Der Anschlusskörper 5 ist hierbei Bestandteil der Aufhängung 2. Der Anschlusskörper 5 kann auf geeignete Weise mit dem rohrförmigen Grundkörper 4 verbunden werden. Der rohrförmige Grundkörper 4 ist allerdings nicht notwendigerweise Bestandteil der Aufhängung 2, denn die Aufhängung 2 mit dem Anschlusskörper 5 kann auch unabhängig von dem rohrförmigen Grundkörper 4 hergestellt und vertrieben werden. Im Rahmen einer Vormontage kann dann der Anschlusskörper 5 zusammen mit weiteren entsprechend ausgestalteten Anschlusskörpern mit dem rohrförmigen Grundkörper 4 verbunden werden, was beispielsweise durch Schweißen möglich ist. Der Anschlusskörper 5 weist in diesem Ausführungsbeispiel ein Außengewinde 8 auf. Ferner weist die Aufhängung 2 ein Anschlussstück 9 mit einem Innengewinde 10 auf. Zumindest im Bereich des Innengewindes 10 ist das Anschlussstück 9 rohrförmig ausgestaltet. Hierbei weist das Anschlussstück 9 an einer Stirnseite 11 einen innenliegenden Kragen 12 auf. Im montierten Zustand, wie er in der
Somit sind der Anschlusskörper 5 und das Anschlussstück 9 miteinander verbunden. Im verbundenen Zustand ist innerhalb des Anschlusskörpers 5 und des Anschlussstückes 9 ein Aufnahmeraum 15 ausgebildet, in dem ein Brennstoffstutzen 16 eines Brennstoffeinspritzventils 17 der Brennstoffeinspritzanlage 1 teilweise angeordnet ist.Thus, the terminal body 5 and the
Der Brennstoffstutzen 16 weist einen Kragen 18 auf, an dem ein Zulauf für den Brennstoff vorgesehen ist, um den Brennstoff aus dem Verbindungskanal 7 in einen Brennstoffraum 19 im Inneren des Brennstoffeinspritzventils 17 zu führen. Im Bereich des Kragens 18 ist ein Dichtring 20 vorgesehen, der sich zwischen dem Brennstoffstutzen 16 und dem Anschlusskörper 5 befindet, um eine Abdichtung zu bilden. Der Dichtring 20 befindet sich hierbei zwischen dem Kragen 18 und einem Stützring 21. Der Stützring 21 umschließt einen verjüngten Abschnitt des Brennstoffstutzens 16.The
An dem innenliegenden Kragen 12 des Anschlussstückes 9 ist eine Anlagefläche 22 ausgestaltet. Die Anlagefläche 22 ist hierbei dem Aufnahmeraum 15 zugewandt. Ferner ist die Anlagefläche 22 in Bezug auf eine Längsachse 23 des Aufnahmeraums 15 konisch ausgestaltet. Ein Öffnungswinkel für die Anlagefläche 22 kann beispielsweise etwa 45° betragen.At the
Außerdem ist ein ringförmiges Stützelement 24 vorgesehen, an dem eine abgerundete Kante 25 ausgestaltet ist. Das ringförmige Stützelement 24 ist in dem Aufnahmeraum 15 angeordnet und umschließt den Brennstoffstutzen 16. Die abgerundete Kante 25 des ringförmigen Stützelements 24 ist hierbei der Anlagefläche 22 des innenliegenden Kragens 18 zugewandt. Über die abgerundete Kante 25 ist das ringförmige Stützelement 24 an der Anlagefläche 22 des innenliegenden Kragens 18 abgestützt.In addition, an
Das ringförmige Stützelement 24 weist außerdem eine ringförmige Ausnehmung 26 auf. Die ringförmige Ausnehmung 26 ist hierbei nach innen offen ausgestaltet. Das bedeutet, dass die ringförmige Ausnehmung 26 zu dem Brennstoffstutzen 16 hin offen ausgestaltet ist. In die ringförmige Ausnehmung 26 ist ein elastisch verformbares Element 27 teilweise eingesetzt.The
Das elastisch verformbare Element 27, das teilweise in die ringförmige Ausnehmung 26 des ringförmigen Stützelements 24 eingesetzt ist, ist somit über das ringförmige Stützelement 24 an dem innenliegenden Kragen 18 des Anschlussstückes 9 abgestützt. Somit ist das elastisch verformbare Element 27 in diesem Ausführungsbeispiel mittelbar an dem innenliegenden Kragen 18 abgestützt. Bei einer abgewandelten Ausgestaltung kann das elastisch verformbare Element 27 allerdings auch direkt an dem innenliegenden Kragen 12 des Anschlussstückes 9 abgestützt sein.The elastically
Ferner ist in diesem Ausführungsbeispiel ein ringförmiges Element 30 vorgesehen, das über eine Schweißnaht 31 mit dem Brennstoffstutzen 16 verbunden ist. Bei einer abgewandelten Ausgestaltung kann das ringförmige Element 30 allerdings auch als Sprengring 30 ausgestaltet sein oder auf andere Weise mit dem Brennstoffstutzen 16 verbunden sein.Further, in this embodiment, an annular member 30 is provided, which is connected via a
An dem ringförmigen Element 30 ist eine Stützfläche 32 ausgestaltet. Bei einer abgewandelten Ausgestaltung kann die Stützfläche 32 allerdings auch direkt an dem Brennstoffstutzen 16, insbesondere einem Kragen des Brennstoffstutzens 16, ausgestaltet sein.On the annular member 30, a
Ferner ist ein ringförmiges Winkelement 33 vorgesehen, dass ein L-förmiges Profil aufweist, in das das elastisch verformbare Element 27 teilweise eingesetzt ist. Das elastisch verformbare Element 27 weist in diesem Ausführungsbeispiel ein rechteckförmiges, insbesondere quadratisches, Profil auf und ist ringförmig ausgestaltet. Somit ist das elastisch verformbare Element 27 zwischen dem ringförmigen Winkelement 33 und dem ringförmigen Stützelement 24 angeordnet.Furthermore, an annular angle element 33 is provided which has an L-shaped profile into which the elastically
Daher ist das elastisch verformbare Element 27 in diesem Ausführungsbeispiel mittels des ringförmigen Winkelelements 33 an der Stützfläche 32 des ringförmigen Elements 30 abgestützt. Somit ist das elastisch verformbare Element 27 mittelbar an der Stützfläche 32 des ringförmigen Elements 30 abgestützt. Bei einer abgewandelten Ausgestaltung kann das elastisch verformbare Element 27 auch direkt an der Stützfläche 32 des ringförmigen Elements 30 abgestützt sein.Therefore, in this embodiment, the elastically
Das ringförmige Winkelelement 33 liegt in diesem Ausführungsbeispiel an einer Außenseite 34 des Brennstoffstutzens 16 an. Hierdurch ist eine ortsfeste Positionierung des ringförmigen Winkelements 33 an dem Brennstoffstutzen 16 gewährleistet.The annular angle element 33 abuts in this embodiment on an
Über die Schweißnaht 31 ist in diesem Ausführungsbeispiel eine stoffschlüssige Verbindung des ringförmigen Elements 30 mit dem Brennstoffstutzen 16 gebildet. Es kann allerdings auch eine formschlüssige Verbindung vorgesehen sein. Auch andere Verbindungsmöglichkeiten sind denkbar.About the
Somit ist der Brennstoffstutzen 16 zumindest über das elastisch verformbare Element 27 an dem innenliegenden Kragen 18 des Anschlussstückes 9 abgestützt. Ein direkter Kontakt zwischen dem Anschlussstück 9 und dem Brennstoffstutzen 16 ist hierbei vermieden. Somit werden Schwingungen wesentlich gedämpft. Daher kann in vorteilhafter Weise eine elastische Lagerung des Brennstoffeinspritzventils 17 realisiert werden. Das elastisch verformbare Element 27 kann hierbei durch ein Drahtgeflecht, eine Tellerfeder, eine Sonderfeder oder auch auf andere Weise realisiert werden. Das elastisch verformbare Element 27 kann hierbei so ausgestaltet werden, dass es zudem als Winkeltoleranzausgleichselement 27 wirkt. Der Kraftfluss zwischen dem Brennstoffstutzen 16 und der Brennstoff führenden Komponente 3 führt über das elastisch verformbare Element 27, wodurch eine Schwingungsübertrag wesentlich bedämpft ist.Thus, the
Somit ist das Anschlussstück 9 über den U-förmigen Verbindungsbügel 47 mit dem Anschlusskörper 5 verbunden. Das Anschlussstück 9 ist in diesem Ausführungsbeispiel als topfförmiges Anschlussstück 9 ausgestaltet.Thus, the
Claims (8)
- Mounting (2) for fuel injection systems (1) for connecting a fuel injection valve (17) to a fuel-conducting component (3), wherein a connector piece (9) is provided, wherein, within the connector piece (9), there is provided a receiving space (15) in which a fuel neck (16) of the fuel injection valve (17) can be at least partially arranged, and wherein, on the connector piece (9), there is formed an internal collar (12), wherein
an elastically deformable element (27) is provided so as to surround the fuel neck (16) of the fuel injection valve (17), that the elastically deformable element (27) is supported, with its lower side, situated downstream as viewed in the flow direction through the fuel neck (16), at least indirectly on the internal collar (12) of the connector piece (9), and that the fuel neck (16) can be supported at least indirectly on the elastically deformable element (27) at its upper side, situated upstream as viewed in the flow direction through the fuel neck (16), wherein a noise reduction can be achieved by means of a decoupling between the fuel injection valve (17) and the fuel-conducting component (3),
characterized
in that, on the internal collar (12) of the connector piece (9), there is formed an abutment surface (22) which, in relation to a longitudinal axis (23) of the receiving space (15), is of conical design and faces towards the receiving space (15), and in that a ring-shaped support element (24) is provided, and in that the elastically deformable element (27) is supported by means of the ring-shaped support element (24) on the internal collar (12) of the connector piece (9). - Mounting according to Claim 1,
characterized
in that the ring-shaped support element (24) has a ring-shaped recess (26) into which the elastically deformable element (27) is at least partially inserted, and/or in that the elastically deformable element (27) is designed as a ring-shaped elastically deformable element (27). - Mounting according to Claim 2,
characterized
in that the ring-shaped recess (26) of the ring-shaped support element (24) is of inwardly open design. - Mounting according to one of Claims 1 to 3,
characterized
in that, in the case of a mounting in conjunction with a fuel neck (16) of the fuel injection valve (17), a support surface (32) is formed on the fuel neck (16) or on an element (30) connected to the fuel neck (16), in that a ring-shaped angle element (33) is provided which has an L-shaped profile into which the elastically deformable element (27) is at least partially inserted, and in that the fuel neck (16) is supported at least by means of the ring-shaped angle element (33) on the elastically deformable element (27). - Mounting according to Claim 4,
characterized
in that the ring-shaped angle element (33) bears against an outer side (34) of the fuel neck (16). - Mounting according to Claim 4 or 5,
characterized
in that the element (30) connected to the fuel neck (16) is cohesively connected to the fuel neck (16). - Mounting according to one of Claims 1 to 6,
characterized
in that, in the case of a mounting in conjunction with a fuel neck (16) of the fuel injection valve (17), a U-shaped connecting clip (47) is provided, in that the connector piece (9) is connected by means of the U-shaped connecting clip (47) to a connector body (5) of the fuel-conducting component (3), in that the connector body (5) has at least one recess (41, 42) on its outer side (40), in that the connector piece (9) has at least one recess (44, 45) on its inner side (43), the latter recess being assigned to the recess (41, 42) of the connector body (5), in that the U-shaped connecting clip (47) engages into the at least one recess (41, 42) of the connector body (5) and into the at least one recess (44, 45) of the connector piece (9), and in that the U-shaped connecting clip (47) is oriented at least approximate perpendicular to a longitudinal axis (23) of the receiving space (15). - Fuel injection system (1), in particular for mixture-compressing, applied-ignition internal combustion engines, having at least one fuel-conducting component (3), at least one fuel injection valve (17), and at least one mounting (2) according to one of Claims 1 to 7, wherein the fuel injection valve (17) is mounted by means of the mounting (2) on the fuel-conducting component (3).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP18171136.7A EP3388662B1 (en) | 2013-01-22 | 2014-01-14 | Mounting for a fuel injection system to link a fuel-guiding component with a fuel injection valve and a fuel injection system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013200993.3A DE102013200993A1 (en) | 2013-01-22 | 2013-01-22 | Fuel injection system with a fuel-carrying component, a fuel injection valve and a suspension |
PCT/EP2014/050591 WO2014114526A1 (en) | 2013-01-22 | 2014-01-14 | Fuel injection system comprising a fuel-guiding component, a fuel injection valve and a mounting |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18171136.7A Division EP3388662B1 (en) | 2013-01-22 | 2014-01-14 | Mounting for a fuel injection system to link a fuel-guiding component with a fuel injection valve and a fuel injection system |
EP18171136.7A Division-Into EP3388662B1 (en) | 2013-01-22 | 2014-01-14 | Mounting for a fuel injection system to link a fuel-guiding component with a fuel injection valve and a fuel injection system |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2948674A1 EP2948674A1 (en) | 2015-12-02 |
EP2948674B1 true EP2948674B1 (en) | 2018-07-25 |
Family
ID=49956208
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14700405.5A Not-in-force EP2948674B1 (en) | 2013-01-22 | 2014-01-14 | Fuel injection system comprising a fuel-guiding component, a fuel injection valve and a mounting |
EP18171136.7A Not-in-force EP3388662B1 (en) | 2013-01-22 | 2014-01-14 | Mounting for a fuel injection system to link a fuel-guiding component with a fuel injection valve and a fuel injection system |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18171136.7A Not-in-force EP3388662B1 (en) | 2013-01-22 | 2014-01-14 | Mounting for a fuel injection system to link a fuel-guiding component with a fuel injection valve and a fuel injection system |
Country Status (6)
Country | Link |
---|---|
US (1) | US9920728B2 (en) |
EP (2) | EP2948674B1 (en) |
KR (1) | KR102179623B1 (en) |
CN (1) | CN104937257B (en) |
DE (1) | DE102013200993A1 (en) |
WO (1) | WO2014114526A1 (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013200982A1 (en) * | 2013-01-22 | 2014-07-24 | Robert Bosch Gmbh | Fuel injection system with a fuel-carrying component, a fuel injection valve and a suspension |
CN106062356B (en) * | 2014-03-14 | 2022-06-21 | 大陆汽车有限公司 | Fuel injection assembly |
DE102017219632A1 (en) | 2017-11-06 | 2019-05-09 | Robert Bosch Gmbh | Metering valve for metering a fluid, which is used in particular for fuel injection systems, suspension for injection systems and injection system with such a metering valve |
DE102017219626A1 (en) | 2017-11-06 | 2019-05-09 | Robert Bosch Gmbh | Injection system, in particular fuel injection system, with a fluid-carrying component, a metering valve and a suspension |
DE102017219629A1 (en) | 2017-11-06 | 2019-05-09 | Robert Bosch Gmbh | Injection system, in particular fuel injection system, with a fluid-carrying component, a metering valve and a suspension |
DE102017219641A1 (en) | 2017-11-06 | 2019-05-09 | Robert Bosch Gmbh | Metering valve for metering a fluid, which is used in particular for fuel injection systems, suspension for injection systems and injection system with such a metering valve |
DE102017219627A1 (en) | 2017-11-06 | 2019-05-09 | Robert Bosch Gmbh | Injection system, in particular fuel injection system, with a fluid-carrying component, a metering valve and a suspension |
DE102017219628A1 (en) | 2017-11-06 | 2019-05-09 | Robert Bosch Gmbh | Injection system, in particular fuel injection system, with a fluid-carrying component, a metering valve and a suspension |
DE102017219630A1 (en) | 2017-11-06 | 2019-05-09 | Robert Bosch Gmbh | Injection system, in particular fuel injection system, with a fluid-carrying component, a metering valve and a suspension |
DE102017219866A1 (en) * | 2017-11-08 | 2019-05-09 | Robert Bosch Gmbh | Suspension for injection systems, in particular fuel injection systems, with a fluid-carrying component and a metering valve and injection system |
DE102018219316A1 (en) | 2018-11-13 | 2020-05-14 | Robert Bosch Gmbh | Injection system and suspension for injection systems |
US11105305B2 (en) * | 2019-04-22 | 2021-08-31 | Hitachi Astemo Americas, Inc. | Fuel injector cup with flow restriction passage |
Family Cites Families (20)
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DE2829057A1 (en) * | 1978-07-01 | 1980-01-10 | Bosch Gmbh Robert | FUEL INJECTION SYSTEM |
US4844515A (en) * | 1986-02-14 | 1989-07-04 | General Motors Corporation | Fuel connection |
US6374806B1 (en) * | 1999-10-25 | 2002-04-23 | International Truck And Engine Corp. | Actuating fluid delivery system for a fuel injector |
GB2358898B (en) * | 1999-12-09 | 2002-04-24 | Usui Kokusai Sangyo Kk | Diesel engine fuel injection pipe |
AT4632U1 (en) * | 2000-05-25 | 2001-09-25 | Avl List Gmbh | INJECTION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE |
US6419282B1 (en) * | 2000-08-09 | 2002-07-16 | Siemens Automotive Corporation | Compliant zero evaporative fuel connection |
JP2002070687A (en) | 2000-08-31 | 2002-03-08 | Otics Corp | Delivery pipe |
DE10056005A1 (en) * | 2000-11-11 | 2002-05-16 | Bosch Gmbh Robert | Fuel injection valve, for an IC motor, has a ring seal at the connector to the fuel distribution line, with elasticity to compensate for shifts in position between the axes of the connector and the fuel injection valve |
DE10157010A1 (en) | 2001-11-21 | 2003-06-05 | Bosch Gmbh Robert | fuel injection system |
DE102005020380A1 (en) | 2005-05-02 | 2006-11-09 | Robert Bosch Gmbh | Fuel injection device for internal combustion engine, has fuel injecting valve fastened directly to fuel distribution line by connection body, where valve and body are placed without abutment on surfaces of mounting hole in cylinder head |
WO2006092427A1 (en) * | 2005-03-03 | 2006-09-08 | Robert Bosch Gmbh | Fuel injection device |
US7334571B1 (en) * | 2006-08-31 | 2008-02-26 | Gm Global Technology Operations, Inc. | Isolation system for high pressure spark ignition direct injection fuel delivery components |
SE530561C2 (en) * | 2006-11-08 | 2008-07-08 | Scania Cv Ab | Device for connecting a high-pressure line to an accumulator tank |
EP2058509B1 (en) * | 2007-11-12 | 2012-07-18 | Continental Automotive GmbH | Coupling device |
FR2928714A1 (en) | 2008-03-12 | 2009-09-18 | Hutchinson Sa | CONNECTION DEVICE FOR TRANSFER OF FLUID, INCORPORATING CIRCUIT, AND METHOD FOR MOUNTING / DISASSEMBLING THE SAME. |
DE102008054591A1 (en) | 2008-12-12 | 2010-06-17 | Robert Bosch Gmbh | Decoupling element for a fuel injection device |
EP2243950B1 (en) * | 2009-04-17 | 2012-05-30 | Delphi Technologies Holding S.à.r.l. | A connector arrangement for a fluid system |
JP2011196260A (en) | 2010-03-19 | 2011-10-06 | Keihin Corp | Fuel supply device for fuel injection valve of intra-cylinder injecting type |
DE102012206890A1 (en) * | 2012-04-26 | 2013-10-31 | Robert Bosch Gmbh | Arrangement with a fuel distributor and a plurality of fuel injection valves |
DE102013200982A1 (en) * | 2013-01-22 | 2014-07-24 | Robert Bosch Gmbh | Fuel injection system with a fuel-carrying component, a fuel injection valve and a suspension |
-
2013
- 2013-01-22 DE DE102013200993.3A patent/DE102013200993A1/en not_active Withdrawn
-
2014
- 2014-01-14 EP EP14700405.5A patent/EP2948674B1/en not_active Not-in-force
- 2014-01-14 CN CN201480004752.3A patent/CN104937257B/en not_active Expired - Fee Related
- 2014-01-14 WO PCT/EP2014/050591 patent/WO2014114526A1/en active Application Filing
- 2014-01-14 EP EP18171136.7A patent/EP3388662B1/en not_active Not-in-force
- 2014-01-14 KR KR1020157019832A patent/KR102179623B1/en active IP Right Grant
- 2014-01-14 US US14/762,323 patent/US9920728B2/en active Active
Non-Patent Citations (1)
Title |
---|
None * |
Also Published As
Publication number | Publication date |
---|---|
EP3388662A1 (en) | 2018-10-17 |
EP2948674A1 (en) | 2015-12-02 |
WO2014114526A1 (en) | 2014-07-31 |
KR20150107758A (en) | 2015-09-23 |
CN104937257B (en) | 2018-04-24 |
KR102179623B1 (en) | 2020-11-18 |
CN104937257A (en) | 2015-09-23 |
US9920728B2 (en) | 2018-03-20 |
DE102013200993A1 (en) | 2014-07-24 |
EP3388662B1 (en) | 2021-01-13 |
US20160003205A1 (en) | 2016-01-07 |
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