EP2989318B1 - Holder for fastening a fuel distributor to an internal combustion engine, and system having a holder of this type - Google Patents
Holder for fastening a fuel distributor to an internal combustion engine, and system having a holder of this type Download PDFInfo
- Publication number
- EP2989318B1 EP2989318B1 EP14706620.3A EP14706620A EP2989318B1 EP 2989318 B1 EP2989318 B1 EP 2989318B1 EP 14706620 A EP14706620 A EP 14706620A EP 2989318 B1 EP2989318 B1 EP 2989318B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fastening body
- preload
- fastening
- decoupling
- preload element
- 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.)
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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
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00Â -Â F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00Â -Â F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/02—Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
- F02M63/0225—Fuel-injection apparatus having a common rail feeding several injectors ; Means for varying pressure in common rails; Pumps feeding common rails
- F02M63/0275—Arrangement of common rails
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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
- 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
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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
- F02M69/00—Low-pressure fuel-injection apparatus ; Apparatus with both continuous and intermittent injection; Apparatus injecting different types of fuel
- F02M69/46—Details, component parts or accessories not provided for in, or of interest apart from, the apparatus covered by groups F02M69/02Â -Â F02M69/44
- F02M69/462—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down
- F02M69/465—Arrangement of fuel conduits, e.g. with valves for maintaining pressure in the pipes after the engine being shut-down of fuel rails
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F7/00—Casings, e.g. crankcases or frames
- F02F7/0065—Shape of casings for other machine parts and purposes, e.g. utilisation purposes, safety
- F02F7/008—Sound insulation
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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
Definitions
- the invention relates to a holder for fastening a component, in particular a fuel distributor, to an internal combustion engine and to a system which is preferably a fuel injection system or a part of a fuel injection system.
- the invention relates to the field of fuel injection systems of internal combustion engines, wherein high pressure fuel is injected through fuel injectors into associated combustion chambers of the internal combustion engine.
- the engine assembly includes a cylinder head, a cam cover, and a fuel rail assembly.
- the fuel rail assembly includes the fuel rail, a bracket assembly, and a fuel injector.
- the fuel rail of the engine assembly is attached to the cam cover.
- the staple assembly is fixed to the fuel rail, comprising a fastener and an insulation element.
- the fastener engages the cam cover and secures the fuel rail thereto.
- the fastening assembly may comprise fastening elements, spacers and a sleeve as well as a first and a second insulating element.
- the fasteners include a head and a stem with a threaded portion that engages an opening in the cam cover to secure the fuel rail to the cam cover.
- the fastener extends through the sleeve.
- the first isolation member is disposed axially between a first side of the bracket and the cam cover.
- the second isolation member is disposed axially between the second side of the bracket and the head of the fastener.
- the insulating elements may be formed of an elastomeric material which provides for damping.
- the from the DE 10 2010 046 344 A1 known motor assembly has the disadvantage that are secured by the head of the fastener, which is screwed into the cam cover, via the spacer, the insulating elements of the elastomeric material.
- the fastener both the attachment to the cam cover and the fixation of the insulation elements. Since the tightening torque of the fastener must be large, thus two possible cases with respect to a dimensioning of the spacer are possible. If the spacer designed slightly too short, then there is a game of the clip between the insulation elements, which significantly affects the function, so this case is to be avoided.
- the spacer is designed to be too long, taking into account possible tolerances, then there is a high local compression of the insulation elements, which can not be avoided due to the required high tightening torque.
- This high pressure then leads to a local component fatigue on the insulating elements, namely on the one hand in the region of the spacer and on the other hand on a stepped portion of a sleeve on which the first insulating element is supported.
- the biasing member is configured as a thin-walled sleeve with an L-shaped profile.
- a second thin-walled sleeve is provided with an L-shaped profile which acts as a support member, so that the decoupling element of the biasing member as well as the support member is biased, and so far until both sleeve members abut against each other.
- the two sleeve elements serve as compression limiters, which ensure that a desired compression of the decoupling elements is not exceeded.
- the holder according to the invention with the features of claim 1 and the inventive system with the features of claim 3 have the advantage that an improved vibration damping is possible. Specifically, with respect to the particular application, a suitable adaptation of the vibration damping can be made.
- the holder according to the invention can also be manufactured and sold independently of the component, in particular the fuel distributor.
- the component, in particular the fuel distributor, and the holding element are not necessarily components of the holder according to the invention.
- the holder can be connected during assembly of the system, in particular a fuel injection system, to an internal combustion engine on the one hand with the component and on the other hand with the internal combustion engine.
- the connection of the biasing member can then be made with the fastening body.
- the arrangement (position) of the biasing member is then set relative to the fastening body and set the bias of the decoupling element.
- the biasing element for example, via a mounting device with a force be applied, which determines the bias of the decoupling element.
- the connection between the biasing member and the fixing body can be suitably configured. After the connection is configured, then the mounting force can be reduced again.
- the tightening torque for the fastening means or a fastening force generated by the fastening means for fastening the fastening body to the internal combustion engine is independent of the mounting force for biasing the decoupling element. This is because the fastening means and the fastening body lie in a force path which is independent of a force path in which the biasing element, the decoupling element and the fastening body lie. The traction takes place here only both times on the mounting body.
- the system is preferably designed as a fuel injection system or part of a fuel injection system.
- it is preferably a plant that is a fuel injection system or part of a fuel injection system.
- the internal combustion engine or parts of the internal combustion engine are not necessarily components of the system.
- a part of the holder, in particular the fastening body or a part of the fastening body may also be attached to the internal combustion engine, for example by pre-assembly.
- the holder can also be connected to the internal combustion engine via other components, in particular attachments.
- the holding element can be configured as a separate holding element and connected to the component, in particular the fuel distributor.
- the retaining element can also be a component of the component, in particular of the fuel distributor.
- the holding element may be formed by a suitable shaping of a housing part of the component.
- a broad scope is given.
- the biasing member has an inner abutment surface with which the biasing member abuts an outer surface of the mounting body.
- a recess is provided on the outer surface of the fastening body, that the biasing element has a deformable projection and that the deformable projection and the recess of the fastening body are configured such that the biasing element can be connected by crimping with the fastening body.
- a plurality of recesses may be provided, which are preferably distributed circumferentially with respect to a longitudinal axis of the fastening body on the outer surface of the fastening body.
- the inner contact surface of the biasing member and the outer surface of the fastening body are configured so that the biasing member by a between the inner bearing surface of the Biasing element and the outer surface of the fastening body formed press fit with the fastening body is connectable.
- a support member is connected to the attachment body or covered by the attachment body.
- the decoupling element can be pretensioned by the pretensioning element at least indirectly against the supporting element.
- the support member is thus connected as a separate part in a suitable manner with the fastening body. In the prestressed state of the decoupling element thus a frictional connection on the support member and the fastening body is achieved.
- the decoupling element is designed in an advantageous manner annular.
- the decoupling element can enclose the fastening body circumferentially.
- a rotationally symmetrical configuration of the decoupling element can be ensured, resulting in a correspondingly symmetrical behavior for vibration damping.
- the decoupling element is configured as an annular decoupling element bent at least approximately rectangularly.
- a special non-symmetrical mode of action for vibration damping can be specified. This is advantageous, for example, in accordance with different loads.
- a fuel distributor designed as a fuel distributor strip can be fastened to the internal combustion engine via a plurality of holders. In this case, different vibration loads occur in the different spatial directions.
- the vibrations or the vibration components in the three mutually perpendicular directions in space one of which is oriented along the fuel distributor and one is oriented parallel to the longitudinal axis of the fastening body.
- different spring constants of the elastic coupling via the decoupling element can then be set by the shaping of the decoupling element.
- the decoupling element is designed so that at least along a biasing direction in which is biased by the arrangement of the biasing member relative to the fastening body, the decoupling element, a non-linear spring characteristic is predetermined, which has a function of acting on the holding element Restoring force of a deflection of the retaining element relative to the fastening body describes.
- a non-linear spring characteristic By biasing a starting point on the non-linear spring characteristic can then be set, so to speak.
- it is also possible to dynamically tune a frequency-dependent stiffness profile as well as a frequency-dependent attenuation by means of the adjustability via the pretension and optionally the geometry of the decoupling element. This results in an adjustable or tunable transfer function.
- the acoustic behavior of the system in particular the fuel injection system, can be improved. Furthermore, the stress on the components used by the assembly and by operating temperatures can be reduced.
- the decoupling elements are in this case designed in an advantageous manner as spring elements.
- viscoelastic decoupling elements can be used.
- a single decoupling element per holder can also be used.
- the attachment is preferably via a plurality of holders.
- the bias of the decoupling or the decoupling takes place. This adjustment is independent of the fastening force applied by the fastener.
- the bias voltage can in this case in one or more spatial directions via one or more intermediate elements, in particular the holding element, carried out, wherein an independent of the tolerances of the individual components bias can be adjusted.
- the bias can be controlled to a certain extent, for example, by welding, crimping or other material or form fit, set.
- a positive connection can also be achieved via a thread, which is designed between the biasing member and the fastening body.
- an adjustability can also be realized. As a result, the bias can be adjusted after a certain period of use.
- the execution of the preferably viscoeleastic decoupling by the at least one decoupling element can also take place without helical fastening.
- a snapping, clamping or integration of the decoupling in existing attachments such as an intake module, a valve cover, a camshaft transmission and other attachments, also possible.
- Fig. 1 shows a system 1 with a holder 2 and a fuel distributor 3, in particular a fuel distributor strip 3, and a part of an internal combustion engine 4, in particular a cylinder head 4, in a partial, schematic sectional view corresponding to a first embodiment.
- the plant 1 is preferably a fuel injection system 1 or a part of a fuel injection system 1.
- the holder 2 has a fastening body 5, a fastening means 6, a retaining element 7, decoupling elements 8, 9 and a biasing element 10.
- the fastening means 6 is screwed into a threaded bore 11.
- a collar 12 of the head 13, which is designed as a screw head 13, abuts against an end face 14 of the fastening body 5.
- the fastening body 5 is acted upon by its underside 15 against a surface 16 of the internal combustion engine 4.
- the fastening force is generated by a tightening torque of the fastener 6 designed as a fastening means 6. This results in a frictional connection via the fastening means 6 and the fastening body 5, which is illustrated by a closed curve 17.
- the biasing element 10 has an inner contact surface 20.
- the biasing member 10 is disposed on an outer surface 21 of the fixing body 5.
- the biasing member 10 is located with its inner contact surface 20 on the outer surface 21 of the mounting body 5.
- the biasing member 10 is displaceable in and against a biasing direction 22 relative to the mounting body 5, wherein a guide on the outer surface 21 takes place.
- the biasing direction 22 is in this case oriented parallel to a longitudinal axis 23 of the fastening means 6.
- the holder 2 also has a support element 24 which in this embodiment is encompassed by the attachment body 5.
- the support member 24 may also be connected to the attachment body 5.
- the underside 15 is at least partially formed on the support member 24 in this embodiment.
- the support member 24 is supported on the surface 16 of the internal combustion engine 4.
- the biasing member 10 has a formation 25, which is designed as a recess. Furthermore, the decoupling element 8 has a formation 26, which is designed as a bulbous shape 26. With the bulbous shape 26, the decoupling element 8 is inserted into the biasing member 10, so that a positive connection is formed.
- the formations 25, 26 may also be formed adapted to each other in another way to form a positive connection.
- the support member 24 has a formation 27, which is designed as a recess. Furthermore, the decoupling element 9 has a formation 28, which is designed like a bulbous shape. With the bulbous formation 28, the decoupling element 9 engages in the formation 27, so that a positive connection is formed.
- the holding element 7 is arranged between the decoupling elements 8, 9, wherein in this embodiment, an upper side 29 of the holder 7 is at least approximately configured flat. Furthermore, an underside 30 of the holder 7 is at least approximately planar. Between the decoupling element 8, which bears against the upper side 29, and the holding element 7, a frictional connection is thus formed in a direction 31 which is perpendicular to the pretensioning direction 22.
- a frictional engagement in the direction 31 is formed between the decoupling element 9, which bears against the underside 30, and the holding element 7.
- a bias voltage of the decoupling elements 8, 9 a sufficient holding force in and against the direction 31 can be generated within certain limits.
- a positive connection can be formed, as described by way of example with reference to the embodiments 25 to 28.
- the biasing member 10 is acted upon in the biasing direction 22 with a suitably selected mounting force.
- the decoupling element 8, 9 are biased.
- the pretensioning element 10 is displaceable relative to the fastening body 5, so that the arrangement of the pretensioning element 10 relative to the fastening body 5 can be predefined during assembly.
- this predetermined arrangement or position of the biasing member 10 relative to the mounting body 5 then takes place the connection of the biasing member 10 with the mounting body 5.
- the bias of the decoupling elements 8, 9 is set. In this way, for example, in the context of a series production, a predetermined bias voltage of the decoupling elements 8, 9 can be set independently of occurring component scatters.
- the adhesion of the biasing member 10 via the decoupling element 8, the holding member 7 and the decoupling element 9 on the support member 24 is closed via the mounting body 5, as illustrated by the closed curve 32.
- the bias of the decoupling 8, 9 and the application the decoupling 9, 9 in operation at a deflection of the support member 7 relative to the mounting body 5 is thus independent of the attachment of the mounting body 5 to the internal combustion engine 4, as illustrated by the closed curve 17.
- the biasing member 10 is preferably fixed in position. This can be done by a material and / or positive connection.
- a modified embodiment may be formed between the biasing member 10 and the mounting body 5 and a press fit.
- the inner contact surface 20 of the biasing member 10 and the outer surface 21 of the mounting body 5 are configured so that the biasing member 10 formed by the between the inner contact surface 20 of the biasing member 10 and the outer surface 21 of the mounting body 5 press fit after assembly with the mounting body 5 is connected.
- this can also be combined with another type of connection.
- the decoupling elements 8, 9 are then biased over the service life of the biasing member 10 against the support member 24.
- the decoupling elements 8, 9 surround the fastening body 5 circumferentially.
- the decoupling elements 8, 9 are in this case designed as annular decoupling elements 8, 9 and preferably designed rotationally symmetrical with respect to the longitudinal axis 23. At least a part of the retaining element 7 in the region of cooperation with the decoupling elements 8, 9 is preferably also designed annular. Accordingly, the biasing member 10 and the support member 24 are preferably configured rotationally symmetrical with respect to the longitudinal axis 23.
- a distance 33 between the biasing member 10 and the support member 24 is predetermined.
- the bias can then be adjusted by the mounting device 10 adjusts the biasing member 10 in the predetermined by the distance 33 arrangement (position) relative to the mounting body 5.
- the distance 33 may in particular be a fixed press-fit dimension 33 if the connection of the pretensioning element 10 to the fastening body 5 takes place by means of an interference fit.
- Fig. 2 shows a system 1 with a holder 2 and a fuel distributor 3 and an internal combustion engine 4 in a partial, schematic sectional view according to a second embodiment.
- the fastening body 5 has on its outer surface 21 at least one recess 40.
- the biasing element 10 has a deformable projection 41, which is provided at least in the region of the recess 40 of the fastening body 5 on the outer surface 21 of the fastening body 5.
- the deformable lug 41 of the biasing member 10 encloses the outer surface 21 of the mounting body 5 circumferentially.
- the inner bearing surface 20 of the biasing member 10 is preferably on the outer surface 21 of the mounting body 5 at. However, the inner bearing surface 20 may also be slightly spaced from the outer surface 21.
- the biasing element 10 is first acted upon in the biasing direction 22 by a mounting device. This can be controlled by force. A distance-controlled adjustment of the pretensioning of the decoupling elements 8, 9 can also be achieved via a defined distance 33.
- the deformable projection 41 during assembly by a crimping tool 42 which is recognized in the region of the recess 40 and applied in a direction 43 with a crimping force, slightly deformed into the recess 40.
- a positive connection is realized by crimping.
- the bias of the decoupling elements 8, 9 is set after assembly.
- Fig. 3 shows a holder 2, the in Fig. 1 illustrated Appendix 1 in an excerpt, schematic sectional view according to a third embodiment.
- the biasing member 10 is first acted upon in the biasing direction 22 with a mounting force.
- the bias of the decoupling elements 8, 9 is set.
- the biasing member 10 is connected to the fixing body 5 by a weld 44.
- a cohesive connection of the biasing member 10 is formed with the mounting body 5 in the predetermined arrangement of the biasing member 10 relative to the mounting body 5.
- Fig. 4 shows a holder 2 of in Fig. 1 illustrated Appendix 1 in an excerpt, schematic sectional view according to a fourth embodiment.
- the fastening body 5 on its outer surface 21 has an external thread 45.
- the biasing element 10 on an inner surface 20 ' has an internal thread 46. With the internal thread 46, the biasing element 10th screwed onto the external thread 45 of the fastening body 5.
- a positive connection is formed.
- the screwing of the biasing member 10 on the mounting body 5 can be carried out here to a predetermined distance 33.
- the bias of the decoupling 8, 9 is adjustable.
- the biasing member 10 may also be fixed in position in a suitable manner.
- Fig. 5 shows the in Fig. 1 illustrated holder in a partial, schematic representation of the designated V direction of view according to a fifth embodiment.
- the biasing element 10 and the decoupling elements 8, 9 are in this case bent at least approximately rectangular and annular.
- Between the inner bearing surface 20 of the biasing member 10 and the outer surface 21 of the mounting body 5 is formed by a corresponding configuration, a sliding fit. In the predetermined arrangement can then be configured in a suitable manner, a fixation of the biasing member 10 to the mounting body 5.
- a non-linear spring characteristic can be predetermined, in particular along the biasing direction 22, which describes a dependence of a restoring force acting on the retaining element 7 of a deflection of the retaining element 7 relative to the fastening body 5.
- a chamfer 50 is provided, whereby the spring constant gradually increases during adjustment of the holding member 7 against the biasing direction 22, since the chamfer 50 is increasingly suppressed.
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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 einen Halter zur Befestigung einer Komponente, insbesondere eines Brennstoffverteilers, an einer Brennkraftmaschine sowie eine Anlage, die vorzugsweise eine Brennstoffeinspritzanlage oder ein Teil einer Brennstoffeinspritzanlage ist. Speziell betrifft die Erfindung das Gebiet der Brennstoffeinspritzanlagen von Brennkraftmaschinen, wobei über Brennstoffeinspritzventile unter hohem Druck stehender Brennstoff in zugeordnete Brennräume der Brennkraftmaschine eingespritzt wird.The invention relates to a holder for fastening a component, in particular a fuel distributor, to an internal combustion engine and to a system which is preferably a fuel injection system or a part of a fuel injection system. Specifically, the invention relates to the field of fuel injection systems of internal combustion engines, wherein high pressure fuel is injected through fuel injectors into associated combustion chambers of the internal combustion engine.
Aus der
Die aus der
Aus der
Der erfindungsgemäße Halter mit den Merkmalen des Anspruchs 1 und die erfindungsgemäße Anlage mit den Merkmalen des Anspruchs 3 haben den Vorteil, dass eine verbesserte Schwingungsdämpfung ermöglicht ist. Speziell kann in Bezug auf den jeweiligen Anwendungsfall eine geeignete Anpassung der Schwingungsdämpfung vorgenommen werden.The holder according to the invention with the features of claim 1 and the inventive system with the features of
Der erfindungsgemäße Halter kann auch unabhängig von der Komponente, insbesondere dem Brennstoffverteiler, hergestellt und vertrieben werden. Die Komponente, insbesondere der Brennstoffverteiler, und das Halteelement sind hierbei nicht notwendigerweise Bestandteile des erfindungsgemäßen Halters. Speziell kann der Halter bei einer Montage der Anlage, insbesondere einer Brennstoffeinspritzanlage, an eine Brennkraftmaschine einerseits mit der Komponente und andererseits mit der Brennkraftmaschine verbunden werden. Bei der Montage kann dann die Verbindung des Vorspannelements mit dem Befestigungskörper erfolgen. Durch die Verbindung des Vorspannelements mit dem Befestigungskörper ist dann die Anordnung (Position) des Vorspannelements relativ zu dem Befestigungskörper vorgegeben und die Vorspannung des Entkoppelelements eingestellt. Hierbei kann das Vorspannelement beispielsweise über eine Montagevorrichtung mit einer Kraft beaufschlagt werden, die die Vorspannung des Entkoppelelements bestimmt. Währenddessen kann auf geeignete Weise die Verbindung zwischen dem Vorspannelement und dem Befestigungskörper ausgestaltet werden. Nachdem die Verbindung ausgestaltet ist, kann dann die Montagekraft wieder reduziert werden. Hierbei ist das Anzugsmoment für das Befestigungsmittel beziehungsweise eine durch das Befestigungsmittel erzeugte Befestigungskraft zum Befestigen des Befestigungskörpers an der Brennkraftmaschine unabhängig von der Montagekraft zur Vorspannung des Entkoppelelements. Dies liegt daran, dass das Befestigungsmittel und der Befestigungskörper in einem Kraftpfad liegen, der unabhängig von einem Kraftpfad ist, in dem das Vorspannelement, das Entkoppelelement und der Befestigungskörper liegen. Der Kraftschluss erfolgt hierbei lediglich beide Male über den Befestigungskörper.The holder according to the invention can also be manufactured and sold independently of the component, in particular the fuel distributor. The component, in particular the fuel distributor, and the holding element are not necessarily components of the holder according to the invention. Specifically, the holder can be connected during assembly of the system, in particular a fuel injection system, to an internal combustion engine on the one hand with the component and on the other hand with the internal combustion engine. During assembly, the connection of the biasing member can then be made with the fastening body. By the connection of the biasing member with the fastening body, the arrangement (position) of the biasing member is then set relative to the fastening body and set the bias of the decoupling element. Here, the biasing element, for example, via a mounting device with a force be applied, which determines the bias of the decoupling element. Meanwhile, the connection between the biasing member and the fixing body can be suitably configured. After the connection is configured, then the mounting force can be reduced again. Here, the tightening torque for the fastening means or a fastening force generated by the fastening means for fastening the fastening body to the internal combustion engine is independent of the mounting force for biasing the decoupling element. This is because the fastening means and the fastening body lie in a force path which is independent of a force path in which the biasing element, the decoupling element and the fastening body lie. The traction takes place here only both times on the mounting body.
Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen des im Anspruch 1 angegebenen Halters und der im Anspruch 3 angegebenen Anlage möglich.The measures listed in the dependent claims advantageous developments of the holder specified in claim 1 and the system specified in
Die Anlage ist vorzugsweise als Brennstoffeinspritzanlage oder Teil einer Brennstoffeinspritzanlage ausgestaltet. Somit handelt es sich vorzugsweise um eine Anlage, die eine Brennstoffeinspritzanlage oder ein Teil einer Brennstoffeinspritzanlage ist. Die Brennkraftmaschine oder Teile der Brennkraftmaschine sind nicht notwendigerweise Bestandteile der Anlage. Allerdings kann an der Brennkraftmaschine beispielsweise durch eine Vormontage auch ein Teil des Halters, insbesondere der Befestigungskörper oder ein Teil des Befestigungskörpers, angebracht sein. Ferner kann der Halter auch über weitere Bauteile, insbesondere Anbauteile, mit der Brennkraftmaschine verbunden sein. Somit ist eine Anpassung an den jeweiligen Anwendungsfall möglich. Das Halteelement kann als separates Halteelement ausgestaltet sein und mit der Komponente, insbesondere dem Brennstoffverteiler, verbunden werden. Das Halteelement kann allerdings auch ein Bestandteil der Komponente, insbesondere des Brennstoffverteilers, sein. Beispielsweise kann das Halteelement durch eine geeignete Ausformung eines Gehäuseteils der Komponente gebildet sein. Somit ist auch diesbezüglich ein breiter Anwendungsbereich gegeben.The system is preferably designed as a fuel injection system or part of a fuel injection system. Thus, it is preferably a plant that is a fuel injection system or part of a fuel injection system. The internal combustion engine or parts of the internal combustion engine are not necessarily components of the system. However, a part of the holder, in particular the fastening body or a part of the fastening body, may also be attached to the internal combustion engine, for example by pre-assembly. Furthermore, the holder can also be connected to the internal combustion engine via other components, in particular attachments. Thus, an adaptation to the particular application is possible. The holding element can be configured as a separate holding element and connected to the component, in particular the fuel distributor. However, the retaining element can also be a component of the component, in particular of the fuel distributor. For example, the holding element may be formed by a suitable shaping of a housing part of the component. Thus, in this regard, a broad scope is given.
Das Vorspannelement weist eine innen liegende Anlagefläche auf, mit der das Vorspannelement an einer Außenfläche des Befestigungskörpers anliegt. Hierdurch ist eine Führung des Vorspannelements an der Außenfläche des Befestigungskörpers vor der Verbindung des Vorspannelements mit dem Befestigungskörper gewährleistet. Bei der Beaufschlagung des Vorspannelements, die zum Vorspannen des Entkoppelelements dient, ist somit eine gleichmäßige Krafteinleitung auf das Entkoppelelement möglich. Hierdurch wird insbesondere eine Verkippung des Vorspannelements vermieden, die zu einer ungleichmäßigen Beaufschlagung des Entkoppelelements führt.The biasing member has an inner abutment surface with which the biasing member abuts an outer surface of the mounting body. As a result, a guide of the biasing member is ensured on the outer surface of the fastening body before the connection of the biasing member with the fastening body. In the Actuation of the biasing element, which serves to bias the decoupling element, thus a uniform force on the decoupling element is possible. As a result, in particular a tilting of the biasing element is avoided, which leads to an uneven loading of the decoupling element.
Ferner ist es hierbei vorteilhaft, dass an der Außenfläche des Befestigungskörpers eine Vertiefung vorgesehen ist, dass das Vorspannelement einen verformbaren Ansatz aufweist und dass der verformbare Ansatz und die Vertiefung des Befestigungskörpers so ausgestaltet sind, dass das Vorspannelement durch Bördeln mit dem Befestigungskörper verbindbar ist. Hierbei können auch mehrere Vertiefungen vorgesehen sein, die vorzugsweise umfänglich bezüglich einer Längsachse des Befestigungskörpers an der Außenfläche des Befestigungskörpers verteilt sind. Dies ermöglicht eine vorteilhafte Verbindung, da auf diese Weise die einzelnen Befestigungsstellen, die durch Bördeln ausgestaltet sind, zumindest näherungsweise parallel zur Längsachse belastet werden und ein Kippmoment zwischen dem Vorspannelement und dem Befestigungskörper, das bei einer einzigen Verbindungsstelle auftritt, vermieden wird. Durch die Führung des Vorspannelements an der Außenfläche des Befestigungskörpers kann allerdings auch durch eine einzelne Verbindungsstelle, an der die Verbindung zwischen dem Vorspannelement und dem Befestigungskörper durch Bördeln ausgestaltet ist, eine zuverlässige Verbindung gewährleistet werden, wenn es im konkreten Anwendungsfall möglich ist.Furthermore, it is advantageous in this case that a recess is provided on the outer surface of the fastening body, that the biasing element has a deformable projection and that the deformable projection and the recess of the fastening body are configured such that the biasing element can be connected by crimping with the fastening body. In this case, a plurality of recesses may be provided, which are preferably distributed circumferentially with respect to a longitudinal axis of the fastening body on the outer surface of the fastening body. This allows an advantageous connection, since in this way the individual fastening points, which are configured by crimping, at least approximately parallel to the longitudinal axis are loaded and a tilting moment between the biasing member and the fastening body, which occurs at a single connection point, is avoided. By the leadership of the biasing member on the outer surface of the mounting body, however, a reliable connection can be ensured by a single connection point at which the connection between the biasing member and the fastening body by crimping, if it is possible in a specific application.
Bei einer weiteren Ausgestaltung ist es vorteilhaft, dass die innen liegende Anlagefläche des Vorspannelements und die Außenfläche des Befestigungskörpers so ausgestaltet sind, dass das Vorspannelement durch einen zwischen der innen liegenden Anlagefläche des Vorspannelements und der Außenfläche des Befestigungskörpers gebildetem Presssitz mit dem Befestigungskörper verbindbar ist. Durch den Presssitz kann allein oder gegebenenfalls in Verbindung mit einem weiteren Verbindungsverfahren die Vorspannung des Entkoppelelements gewährleistet werden.In a further embodiment, it is advantageous that the inner contact surface of the biasing member and the outer surface of the fastening body are configured so that the biasing member by a between the inner bearing surface of the Biasing element and the outer surface of the fastening body formed press fit with the fastening body is connectable. By means of the press fit, the prestressing of the decoupling element can be ensured alone or optionally in conjunction with a further connection method.
Ein Stützelement ist mit dem Befestigungskörper verbunden oder von dem Befestigungskörper umfasst. Das Entkoppelelement ist von dem Vorspannelement zumindest mittelbar gegen das Stützelement vorspannbar. Das Stützelement ist somit als separates Teil auf geeignete Weise mit dem Befestigungskörper verbunden. Im vorgespannten Zustand des Entkoppelelements ist somit ein Kraftschluss über das Stützelement und den Befestigungskörper erzielt.A support member is connected to the attachment body or covered by the attachment body. The decoupling element can be pretensioned by the pretensioning element at least indirectly against the supporting element. The support member is thus connected as a separate part in a suitable manner with the fastening body. In the prestressed state of the decoupling element thus a frictional connection on the support member and the fastening body is achieved.
Das Entkoppelelement ist in vorteilhafter Weise ringförmig ausgestaltet. Dadurch kann das Entkoppelelement den Befestigungskörper umfänglich umschließen. Auf diese Weise kann insbesondere eine rotationssymmetrische Ausgestaltung des Entkoppelelements gewährleistet werden, wodurch sich ein entsprechend symmetrisches Verhalten zur Schwingungsdämpfung ergibt. Vorteilhaft ist es allerdings auch, dass das Entkoppelelement als zumindest näherungsweise rechteckförmig gebogenes, ringförmiges Entkoppelelement ausgestaltet ist. Dadurch kann eine spezielle nichtsymmetrische Wirkungsweise zur Schwingungsdämpfung vorgegeben werden. Dies ist beispielsweise bei entsprechend unterschiedlichen Belastungen vorteilhaft. Beispielsweise kann ein als Brennstoffverteilerleiste ausgestalteter Brennstoffverteiler über mehrere Halter an der Brennkraftmaschine befestigt sein. Hierbei treten unterschiedliche Schwingungsbelastungen in den verschiedenen Raumrichtungen auf. Speziell unterscheiden sich gegebenenfalls die Schwingungen beziehungsweise die Schwingungskomponenten in den drei senkrecht zueinander stehenden Raumrichtungen, von denen eine entlang des Brennstoffverteilers orientiert ist und eine parallel zu der Längsachse des Befestigungskörpers orientiert ist. Bezüglich der hierdurch definierten drei Raumrichtungen können dann unterschiedliche Federkonstanten der elastischen Kopplung über das Entkoppelelement durch die Formgestaltung des Entkoppelelements eingestellt werden.The decoupling element is designed in an advantageous manner annular. As a result, the decoupling element can enclose the fastening body circumferentially. In this way, in particular a rotationally symmetrical configuration of the decoupling element can be ensured, resulting in a correspondingly symmetrical behavior for vibration damping. However, it is also advantageous that the decoupling element is configured as an annular decoupling element bent at least approximately rectangularly. As a result, a special non-symmetrical mode of action for vibration damping can be specified. This is advantageous, for example, in accordance with different loads. For example, a fuel distributor designed as a fuel distributor strip can be fastened to the internal combustion engine via a plurality of holders. In this case, different vibration loads occur in the different spatial directions. Specifically, if necessary, the vibrations or the vibration components in the three mutually perpendicular directions in space, one of which is oriented along the fuel distributor and one is oriented parallel to the longitudinal axis of the fastening body. With regard to the three spatial directions defined as a result, different spring constants of the elastic coupling via the decoupling element can then be set by the shaping of the decoupling element.
Vorteilhaft ist es auch, dass das Entkoppelelement so ausgestaltet ist, dass zumindest entlang einer Vorspannrichtung, in der durch die Anordnung des Vorspannelements relativ zu dem Befestigungskörper das Entkoppelelement vorgespannt ist, eine nicht lineare Federkennlinie vorgegeben ist, die eine Abhängigkeit einer auf das Halteelement wirkenden Rückstellkraft von einer Auslenkung des Halteelements relativ zu dem Befestigungskörper beschreibt. Durch die Vorspannung kann dann gewissermaßen ein Ausgangspunkt auf der nicht linearen Federkennlinie eingestellt werden. Hierdurch können auch ein frequenzabhängiger Steifigkeitsverlauf sowie eine frequenzabhängige Dämpfung durch die Einstellbarkeit über die Vorspannung und gegebenenfalls die Geometrie des Entkoppelelements dynamisch abgestimmt werden. Dies resultiert in einer einstellbaren oder abstimmbaren Übertragungsfunktion.It is also advantageous that the decoupling element is designed so that at least along a biasing direction in which is biased by the arrangement of the biasing member relative to the fastening body, the decoupling element, a non-linear spring characteristic is predetermined, which has a function of acting on the holding element Restoring force of a deflection of the retaining element relative to the fastening body describes. By biasing a starting point on the non-linear spring characteristic can then be set, so to speak. As a result, it is also possible to dynamically tune a frequency-dependent stiffness profile as well as a frequency-dependent attenuation by means of the adjustability via the pretension and optionally the geometry of the decoupling element. This results in an adjustable or tunable transfer function.
Somit kann das akustische Verhalten der Anlage, insbesondere der Brennstoffeinspritzanlage, verbessert werden. Ferner kann die Beanspruchung der eingesetzten Bauteile durch die Montage sowie durch Betriebstemperaturen reduziert werden. Die Entkoppelelemente sind hierbei in vorteilhafter Weise als Federelemente ausgestaltet. Speziell können viskoelastische Entkoppelelemente zum Einsatz kommen. In Bezug auf den jeweiligen Anwendungsfall kann auch ein einzelnes Entkoppelelement je Halter zum Einsatz kommen. Die Befestigung erfolgt vorzugsweise über mehrere Halter. Über das Entkoppelelement beziehungsweise die Entkoppelelemente ist somit eine mechanische und gegebenenfalls auch thermische und geometrische Entkopplung der Komponente zur Brennkraftmaschine in mindestens einer Raumrichtung gegeben. Ferner ist ein definiertes, mechanisch dämpfendes Verhalten der Entkopplung in den einzelnen Raumrichtungen ermöglicht. Durch den Einstellvorgang bei der Montage erfolgt die Vorspannung der Entkoppelelemente beziehungsweise des Entkoppelelements. Dieser Einstellvorgang erfolgt unabhängig von der Befestigungskraft, die durch das Befestigungsmittel aufgebracht wird. Die Vorspannung kann hierbei in ein oder mehreren Raumrichtungen über ein oder mehrere Zwischenelemente, insbesondere das Halteelement, erfolgen, wobei eine von den Toleranzen der einzelnen Bauteile unabhängige Vorspannung eingestellt werden kann.Thus, the acoustic behavior of the system, in particular the fuel injection system, can be improved. Furthermore, the stress on the components used by the assembly and by operating temperatures can be reduced. The decoupling elements are in this case designed in an advantageous manner as spring elements. In particular, viscoelastic decoupling elements can be used. With regard to the respective application, a single decoupling element per holder can also be used. The attachment is preferably via a plurality of holders. By means of the decoupling element or the decoupling elements, therefore, mechanical and optionally also thermal and geometrical decoupling of the component to the internal combustion engine is provided in at least one spatial direction. Furthermore, a defined, mechanically damping behavior of the decoupling in the individual spatial directions is possible. By adjusting during assembly, the bias of the decoupling or the decoupling takes place. This adjustment is independent of the fastening force applied by the fastener. The bias voltage can in this case in one or more spatial directions via one or more intermediate elements, in particular the holding element, carried out, wherein an independent of the tolerances of the individual components bias can be adjusted.
Somit werden auch die Anforderungen an die Fertigung hinsichtlich Toleranzen der einzelnen Bauteile reduziert.Thus, the requirements for the production of tolerances of the individual components are reduced.
Die Vorspannung kann gewissermaßen kraftgeregelt, beispielsweise durch Festschweißen, Bördeln oder einen sonstigen Stoff- oder Formschluss, eingestellt werden. Ein Formschluss kann auch über ein Gewinde erzielt werden, das zwischen dem Vorspannelement und dem Befestigungskörper ausgestaltet ist. Bei solch einer Ausgestaltung kann auch eine Nachstellbarkeit realisiert werden. Hierdurch kann nach einer gewissen Gebrauchsdauer die Vorspannung nachgestellt werden.The bias can be controlled to a certain extent, for example, by welding, crimping or other material or form fit, set. A positive connection can also be achieved via a thread, which is designed between the biasing member and the fastening body. In such an embodiment, an adjustability can also be realized. As a result, the bias can be adjusted after a certain period of use.
Allerdings ist auch eine Einstellung bezüglich einer vorweggenommenen Alterung des Entkoppelelements möglich.However, a setting regarding an anticipated aging of the decoupling element is possible.
Die Ausführung der vorzugsweise viskoeleastischen Abkoppelung durch das zumindest eine Entkoppelelement kann auch ohne schraubenförmiger Befestigung erfolgen. Hierbei ist ein Schnappen, Klemmen oder eine Integration der Abkopplung in vorhandene Anbauteile, wie ein Ansaugmodul, einen Ventildeckel, ein Nockenwellengetriebe und andere Anbauten, ebenfalls möglich.The execution of the preferably viscoeleastic decoupling by the at least one decoupling element can also take place without helical fastening. Here is a snapping, clamping or integration of the decoupling in existing attachments, such as an intake module, a valve cover, a camshaft transmission and other attachments, also possible.
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:
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Fig. 1 eine Anlage mit einem Halter und einem Brennstoffverteiler und eine Brennkraftmaschine in einer auszugsweisen, schematischen Schnittdarstellung entsprechend einem ersten Ausführungsbeispiel der Erfindung; -
Fig. 2 eine Anlage mit einem Halter und einem Brennstoffverteiler und eine Brennkraftmaschine in einer auszugsweisen, schematischen Schnittdarstellung entsprechend einem zweiten Ausführungsbeispiel der Erfindung; -
Fig. 3 einen Halter der inFig. 1 dargestellten Anlage in einer auszugsweisen, schematischen Schnittdarstellung entsprechend einem dritten Ausführungsbeispiel der Erfindung; -
Fig. 4 einen Halter der inFig. 1 dargestellten Anlage in einer auszugsweisen, schematischen Schnittdarstellung entsprechend einem vierten Ausführungsbeispiel der Erfindung und -
Fig. 5 den inFig. 1 dargestellten Halter in einer auszugsweisen, schematischen Darstellung aus der mit V bezeichneten Blickrichtung entsprechend einem fünften Ausführungsbeispiel der Erfindung.
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Fig. 1 a system with a holder and a fuel distributor and an internal combustion engine in an excerpt, schematic sectional view according to a first embodiment of the invention; -
Fig. 2 a system comprising a holder and a fuel distributor and an internal combustion engine in an excerpt, schematic sectional view according to a second embodiment of the invention; -
Fig. 3 a holder of inFig. 1 illustrated plant in a partial, schematic sectional view according to a third embodiment of the invention; -
Fig. 4 a holder of inFig. 1 illustrated plant in a partial, schematic sectional view according to a fourth embodiment of the invention and -
Fig. 5 the inFig. 1 illustrated holder in a partial, schematic representation of the designated V direction of view according to a fifth embodiment of the invention.
Der Halter 2 weist einen Befestigungskörper 5, ein Befestigungsmittel 6, ein Halteelement 7, Entkoppelelemente 8, 9 und ein Vorspannelement 10 auf. Das Befestigungsmittel 6 ist in eine Gewindebohrung 11 eingeschraubt. Ein Bund 12 des Kopfes 13, der als Schraubenkopf 13 ausgestaltet ist, liegt an einer Stirnseite 14 des Befestigungskörpers 5 an. Dadurch wird der Befestigungskörper 5 mit seiner Unterseite 15 gegen eine Oberfläche 16 der Brennkraftmaschine 4 beaufschlagt. Hierbei wird durch ein Anzugmoment des als Befestigungsschraube 6 ausgestalteten Befestigungsmittels 6 die Befestigungskraft erzeugt. Hierbei kommt es zu einem Kraftschluss über das Befestigungsmittel 6 und dem Befestigungskörper 5, der durch eine geschlossene Kurve 17 veranschaulicht ist.The
Das Vorspannelement 10 weist eine innen liegende Anlagefläche 20 auf. Das Vorspannelement 10 ist an einer Außenfläche 21 des Befestigungskörpers 5 angeordnet. Hierbei liegt das Vorspannelement 10 mit seiner innen liegenden Anlagefläche 20 an der Außenfläche 21 des Befestigungskörpers 5 an. Bei der Montage ist das Vorspannelement 10 in und entgegen einer Vorspannrichtung 22 relativ zu dem Befestigungskörper 5 verschiebbar, wobei eine Führung an der Außenfläche 21 erfolgt. Die Vorspannrichtung 22 ist hierbei parallel zu einer Längsachse 23 des Befestigungsmittels 6 orientiert.The biasing
Der Halter 2 weist außerdem ein Stützelement 24 auf, das in diesem Ausführungsbeispiel von dem Befestigungskörper 5 umfasst ist. Bei einer abgewandelten Ausgestaltung kann das Stützelement 24 auch mit dem Befestigungskörper 5 verbunden sein. Die Unterseite 15 ist in diesem Ausführungsbeispiel zumindest teilweise an dem Stützelement 24 ausgebildet. Somit ist das Stützelement 24 an der Oberfläche 16 der Brennkraftmaschine 4 abgestützt.The
Das Vorspannelement 10 weist eine Ausformung 25 auf, die als Vertiefung ausgestaltet ist. Ferner weist das Entkoppelelement 8 eine Ausformung 26 auf, die als bauchförmige Ausformung 26 ausgestaltet ist. Mit der bauchförmigen Ausformung 26 ist das Entkoppelelement 8 in das Vorspannelement 10 eingefügt, so dass ein Formschluss gebildet ist. Die Ausformungen 25, 26 können auch auf andere Weise aneinander angepasst ausgeformt sein, um einen Formschluss zu bilden.The biasing
Das Stützelement 24 weist eine Ausformung 27 auf, die als Vertiefung ausgestaltet ist. Ferner weist das Entkoppelelement 9 eine Ausformung 28 auf, die bauchförmig ausgestaltet ist. Mit der bauchförmigen Ausformung 28 greift das Entkoppelelement 9 in die Ausformung 27 ein, so dass ein Formschluss gebildet ist. Das Haltelement 7 ist zwischen den Entkoppelelementen 8, 9 angeordnet, wobei in diesem Ausführungsbeispiel eine Oberseite 29 des Halters 7 zumindest näherungsweise eben ausgestaltet ist. Ferner ist auch eine Unterseite 30 des Halters 7 zumindest näherungsweise eben ausgestaltet. Zwischen dem Entkoppelelement 8, das an der Oberseite 29 anliegt, und dem Halteelement 7, ist somit in einer Richtung 31, die senkrecht zu der Vorspannrichtung 22 ist, ein Reibschluss gebildet. Entsprechend ist auch zwischen dem Entkoppelelement 9, das an der Unterseite 30 anliegt, und dem Halteelement 7 ein Reibschluss in der Richtung 31 gebildet. Über eine Vorspannung der Entkoppelelemente 8, 9 kann hierbei innerhalb gewisser Grenzen eine ausreichende Haltekraft in und entgegen der Richtung 31 erzeugt werden. Gegebenenfalls kann auch zwischen dem Halteelement 7 und zumindest einem der Entkoppelelemente 8, 9 ein Formschluss ausgebildet werden, wie es anhand der Ausformungen 25 bis 28 exemplarisch beschrieben ist.The
Bei der Montage wird das Vorspannelement 10 in der Vorspannrichtung 22 mit einer geeignet gewählten Montagekraft beaufschlagt. Dadurch werden die Entkoppelelement 8, 9 vorgespannt. Hierbei wird ausgenutzt, dass das Vorspannelement 10 relativ zu dem Befestigungskörper 5 verschiebbar ist, so dass die Anordnung des Vorspannelements 10 relativ zu dem Befestigungskörper 5 bei der Montage vorgebbar ist. In dieser vorgegebenen Anordnung beziehungsweise Position des Vorspannelements 10 relativ zu dem Befestigungskörper 5 erfolgt dann die Verbindung des Vorspannelements 10 mit dem Befestigungskörper 5. Dadurch ist die Vorspannung der Entkoppelelemente 8, 9 eingestellt. Auf diese Weise kann beispielsweise im Rahmen einer Serienproduktion eine vorgegebene Vorspannung der Entkoppelelemente 8, 9 unabhängig von auftretenden Bauteilstreuungen eingestellt werden. Zusätzlich kann auch in Bezug auf den jeweiligen Anwendungsfall individuell eine gewünschte Vorspannung eingestellt werden. Ferner kann auch ein modularer Aufbau realisiert werden, bei dem beispielsweise das Halteelement 7 und/oder die Entkoppelelemente 8, 9 in Bezug auf den jeweiligen Anwendungsfall unterschiedlich dimensioniert sind. Auch bei solch einem modularen Aufbau kann dann stets die gewünschte Vorspannung eingestellt werden.During assembly, the biasing
Der Kraftschluss von dem Vorspannelement 10 über das Entkoppelelement 8, das Halteelement 7 und das Entkoppelelement 9 auf das Stützelement 24 ist über den Befestigungskörper 5 geschlossen, wie es durch die geschlossene Kurve 32 veranschaulicht ist. Die Vorspannung der Entkoppelelemente 8, 9 und die Beaufschlagung der Entkoppelelemente 9, 9 im Betrieb bei einer Auslenkung des Halteelements 7 relativ zu dem Befestigungskörper 5 ist somit unabhängig von der Befestigung des Befestigungskörpers 5 an der Brennkraftmaschine 4, wie es durch die geschlossene Kurve 17 veranschaulicht ist.The adhesion of the biasing
Wenn die vorgegebene Vorspannung der Entkoppelelemente 8, 9 durch die Anordnung des Vorspannelements 10 eingestellt ist, dann wird das Vorspannelement 10 vorzugsweise in seiner Position fixiert. Dies kann durch einen Stoff- und/oder Formschluss erfolgen.If the predetermined bias of the
Bei einer abgewandelten Ausgestaltung kann zwischen dem Vorspannelement 10 und dem Befestigungskörper 5 auch ein Presssitz gebildet sein. Hierfür sind die innen liegende Anlagefläche 20 des Vorspannelements 10 und die Außenfläche 21 des Befestigungskörpers 5 so ausgestaltet, dass das Vorspannelement 10 durch den zwischen der innen liegenden Anlagefläche 20 des Vorspannelements 10 und der Außenfläche 21 des Befestigungskörpers 5 gebildeten Presssitz nach der Montage mit dem Befestigungskörper 5 verbunden ist. Dies kann je nach Anwendungsfall auch mit einer weiteren Verbindungsart kombiniert werden. Die Entkoppelelemente 8, 9 sind dann über die Betriebsdauer von dem Vorspannelement 10 gegen das Stützelement 24 vorgespannt.In a modified embodiment may be formed between the biasing
In diesem Ausführungsbeispiel umschließen die Entkoppelelemente 8, 9 den Befestigungskörper 5 umfänglich. Die Entkoppelelemente 8, 9 sind hierbei als ringförmige Entkoppelelemente 8, 9 ausgestaltet und vorzugsweise bezüglich der Längsachse 23 rotationssymmetrisch ausgestaltet. Zumindest ein Teil des Halteelements 7 im Bereich der Zusammenwirkung mit den Entkoppelelementen 8, 9 ist vorzugsweise ebenfalls ringförmig ausgestaltet. Entsprechend sind auch das Vorspannelement 10 und das Stützelement 24 vorzugsweise rotationssymmetrisch bezüglich der Längsachse 23 ausgestaltet.In this embodiment, the
Bei der Ausgestaltung der Verbindung zwischen dem Vorspannelement 10 und dem Befestigungskörper 5 ist es auch möglich, dass bei der Montage ein Abstand 33 zwischen dem Vorspannelement 10 und dem Stützelement 24 vorgegeben ist. Bei der Montage kann dann die Vorspannung eingestellt werden, indem die Montagevorrichtung das Vorspannelement 10 in die durch den Abstand 33 vorgegebene Anordnung (Position) relativ zu dem Befestigungskörper 5 verstellt. Bei dem Abstand 33 kann es sich insbesondere um ein festgelegtes Einpressmaß 33 handeln, wenn die Verbindung des Vorspannelements 10 mit dem Befestigungskörper 5 durch eine Presspassung erfolgt. Somit ist eine weggeregelte Einstellung der Vorspannung der Entkoppelelemente 8, 9 möglich.In the embodiment of the connection between the biasing
Bei der Montage wird das Vorspannelement 10 zunächst in der Vorspannrichtung 22 von einer Montagevorrichtung beaufschlagt. Dies kann kraftgeregelt erfolgen. Über einen festgelegten Abstand 33 kann auch eine weggeregelte Einstellung der Vorspannung der Entkoppelelemente 8, 9 erzielt werden. In der vorgegebenen Anordnung des Vorspannelements 10 relativ zu dem Befestigungskörper 5 wird der verformbare Ansatz 41 bei der Montage durch ein Bördelwerkzeug 42, das im Bereich der Vertiefung 40 angesetzt und in einer Richtung 43 mit einer Bördelkraft beaufschlagt wird, etwas in die Vertiefung 40 verformt. Somit ist ein Formschluss durch Bördeln realisiert. In der vorgegebenen Anordnung des Vorspannelements 10 relativ zu dem Befestigungskörper 5, in dem die Verbindung des Vorspannelements 10 mit dem Befestigungskörper 5 durch Bördeln erfolgt, ist nach der Montage die Vorspannung der Entkoppelelemente 8, 9 eingestellt.During assembly, the biasing
Durch eine entsprechende Ausformung zumindest eines Entkoppelelements 8, 9 kann insbesondere entlang der Vorspannrichtung 22 eine nicht lineare Federkennlinie vorgegeben sein, die eine Abhängigkeit einer auf das Halteelement 7 wirkenden Rückstellkraft von einer Auslenkung des Haltelements 7 relativ zu dem Befestigungskörper 5 beschreibt. Beispielsweise ist bei dem anhand der
Die Erfindung ist nicht auf die beschriebenen Ausführungsbeispiele beschränkt.The invention is not limited to the described embodiments.
Claims (4)
- Holder (2) for fastening a component (3), in particular a fuel distributor, to an internal combustion engine (4) via a holding element (7), wherein the holder has at least one decoupling element (8, 9), a fastening body (5), and a fastening means (6), wherein the fastening body (5) is able to be fastened to the internal combustion engine (4) by means of the fastening means (6), and wherein the holding element (7) is able to be fastened to the fastening body (5) via the decoupling element (8, 9), and wherein a preload element (10) is provided, wherein the preload element (10) is able to be connected to the fastening body (5), and wherein preloading of the decoupling element (8, 9) is able to be set by way of a predefinable arrangement of the preload element (10) relative to the fastening body (5), in which arrangement the connection of the preload element (10) to the fastening body (5) is realized, wherein the connection of the preload element (10) to the fastening body (5) is realized in said predefined arrangement or position of the preload element (10) relative to the fastening body (5), and wherein a support element (24) is provided such that the decoupling element (8, 9) is able to be preloaded at least indirectly against the support element (24) by the preload element (10),
characterized
in that the preload element (10) and the support element (24) are arranged spaced apart from one another, and are passed through by the fastening body (5) to which they are each connected, such that mutual abutment of the preload element (10) and the support element (24) is excluded, wherein the preload element (10) has an inner bearing surface (20) by way of which the preload element (10) bears against an outer surface (21) of the fastening body (5),
and
in that the fastening body (5) has at least one depression (40) on the outer surface (21) of the fastening body (5), in that the preload element (10) has a deformable shoulder (41), and in that the deformable shoulder (41) and the depression (40) of the fastening body (5) are formed such that the preload element (10) is able to be connected to the fastening body (5) by way of flanging,
or
in that the preload element (10) is connected to the fastening body (5) by way of welding,
or
in that the preload element (10) is screwed by way of an inner thread (46) of the preload element (10) onto an outer thread (45) of the fastening body (5), or
in that the inner bearing surface (20) of the preload element (10) and the outer surface (21) of the fastening body (5) are formed such that the preload element (10) is able to be connected to the fastening body (5) by way of an interference fit formed between the inner bearing surface (20) of the preload element (10) and the outer surface (21) of the fastening body (5). - Holder according to Claim 1,
characterized
in that the decoupling element (8, 9) surrounds the fastening body (5) and/or in that the decoupling element (8, 9) is formed as a ring-shaped decoupling element (8, 9) which is bent in at least approximately rectangular form. - System (1) having a component (3) and having a holder (2) which serves for fastening the component (3) to an internal combustion engine (4), wherein the holder (2) has a decoupling element (8, 9), a fastening body (5), a fastening means (6) and a holding element (7), wherein the fastening body (5) is able to be fastened to the internal combustion engine (4) by means of the fastening means (6), wherein the holding element (7) is fastened to the fastening body (5) via the decoupling element (8, 9), and wherein the holding element (7) is connected at least indirectly to the component (3) or is a constituent part of the component (3), and wherein the holder (2) has a preload element (10), wherein the preload element (10) is connected to the fastening body (5), and preloading of the decoupling element (8, 9) is set by way of an arrangement of the preload element (10) relative to the fastening body (5), in which arrangement the preload element (10) is connected to the fastening body (5), wherein the connection of the preload element (10) to the fastening body (5) is realized in said predefined arrangement or position of the preload element (10) relative to the fastening body (5), and wherein a support element (24) is provided such that the decoupling element (8, 9) is able to be preloaded at least indirectly against the support element (24) by the preload element (10),
characterized
in that the preload element (10) and the support element (24) are arranged spaced apart from one another, and are passed through by the fastening body (5) to which they are each connected, such that mutual abutment of the preload element (10) and the support element (24) is excluded, wherein the preload element (10) has an inner bearing surface (20) by way of which the preload element (10) bears against an outer surface (21) of the fastening body (5), wherein the preload element (10) is connected to the fastening body (5) by way of welding and/or flanging and/or an interference fit, or the preload element (10) is screwed by way of an inner thread (46) of the preload element (10) onto an outer thread (45) of the fastening body (5). - System according to Claim 3,
characterized
in that the decoupling element (8, 9) is formed such that, at least along a preloading direction (22) in which the decoupling element (8, 9) is preloaded by way of the arrangement of the preload element (10) relative to the fastening body (5), a non-linear spring characteristic is predefined, which describes a dependence of a restoring force acting on the holding element (7) on a deflection of the holding element (7) relative to the fastening body (5) .
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013207368.2A DE102013207368A1 (en) | 2013-04-23 | 2013-04-23 | Holder for mounting a fuel distributor to an internal combustion engine and system with such a holder |
PCT/EP2014/053701 WO2014173561A1 (en) | 2013-04-23 | 2014-02-26 | Holder for fastening a fuel distributor to an internal combustion engine, and system having a holder of this type |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2989318A1 EP2989318A1 (en) | 2016-03-02 |
EP2989318B1 true EP2989318B1 (en) | 2019-05-01 |
Family
ID=50179637
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14706620.3A Active EP2989318B1 (en) | 2013-04-23 | 2014-02-26 | Holder for fastening a fuel distributor to an internal combustion engine, and system having a holder of this type |
Country Status (6)
Country | Link |
---|---|
US (1) | US9835125B2 (en) |
EP (1) | EP2989318B1 (en) |
KR (1) | KR102179625B1 (en) |
CN (1) | CN105143660B (en) |
DE (1) | DE102013207368A1 (en) |
WO (1) | WO2014173561A1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10746145B1 (en) * | 2019-05-08 | 2020-08-18 | Delphi Technologies Ip Limited | Isolator for fuel injector |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010088471A1 (en) * | 2009-01-29 | 2010-08-05 | Hitachi Construction Machinery Co., Ltd. | Track rod |
EP2495427A1 (en) * | 2011-03-04 | 2012-09-05 | Continental Automotive GmbH | Coupling device |
WO2013189637A1 (en) * | 2012-06-20 | 2013-12-27 | Robert Bosch Gmbh | Retainer for mounting a fuel distributor on an internal combustion engine and fuel injection system with such a retainer |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
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US4975008A (en) * | 1989-03-31 | 1990-12-04 | Illinois Tool Works, Inc. | Fastener assembly with sealing grommet |
US5044338A (en) * | 1990-01-23 | 1991-09-03 | Siemens Automotive L.P. | Fuel rail vibration damper |
US5871319A (en) * | 1995-12-23 | 1999-02-16 | Richard Bergner Gmbh & Co. | Assembly arrangement including cuff with radially inwardly protruding fastening region |
DE10145035A1 (en) * | 2001-09-13 | 2003-04-10 | Bosch Gmbh Robert | fuel injection system |
US6591801B1 (en) * | 2002-06-11 | 2003-07-15 | General Motors Corporation | Engine cover balanced isolated support and seal |
EP1859160B1 (en) * | 2005-03-03 | 2010-02-10 | Robert Bosch GmbH | Fuel injection device |
US7591246B2 (en) | 2006-01-17 | 2009-09-22 | Gm Global Technology Operations, Inc. | Isolated fuel delivery system |
DE102007049357A1 (en) * | 2007-10-15 | 2009-04-16 | Robert Bosch Gmbh | Fuel injection device |
DE102008002654A1 (en) * | 2008-06-26 | 2009-12-31 | Robert Bosch Gmbh | Decoupling element for a fuel injection device |
US7942132B2 (en) * | 2008-07-17 | 2011-05-17 | Robert Bosch Gmbh | In-line noise filtering device for fuel system |
US8307809B2 (en) * | 2009-09-29 | 2012-11-13 | GM Global Technology Operations LLC | Engine assembly including cam cover mounted fuel rail |
US8875681B2 (en) | 2011-10-28 | 2014-11-04 | Robert Bosch Gmbh | Fuel rail mounting arrangement |
US8800534B2 (en) * | 2011-11-18 | 2014-08-12 | Robert Bosch Gmbh | Fuel rail mounting arrangement |
-
2013
- 2013-04-23 DE DE102013207368.2A patent/DE102013207368A1/en not_active Withdrawn
-
2014
- 2014-02-26 CN CN201480023002.0A patent/CN105143660B/en active Active
- 2014-02-26 US US14/785,958 patent/US9835125B2/en active Active
- 2014-02-26 WO PCT/EP2014/053701 patent/WO2014173561A1/en active Application Filing
- 2014-02-26 EP EP14706620.3A patent/EP2989318B1/en active Active
- 2014-02-26 KR KR1020157030459A patent/KR102179625B1/en active IP Right Grant
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010088471A1 (en) * | 2009-01-29 | 2010-08-05 | Hitachi Construction Machinery Co., Ltd. | Track rod |
EP2495427A1 (en) * | 2011-03-04 | 2012-09-05 | Continental Automotive GmbH | Coupling device |
WO2013189637A1 (en) * | 2012-06-20 | 2013-12-27 | Robert Bosch Gmbh | Retainer for mounting a fuel distributor on an internal combustion engine and fuel injection system with such a retainer |
Also Published As
Publication number | Publication date |
---|---|
KR20160002816A (en) | 2016-01-08 |
US9835125B2 (en) | 2017-12-05 |
KR102179625B1 (en) | 2020-11-18 |
WO2014173561A1 (en) | 2014-10-30 |
CN105143660B (en) | 2019-01-01 |
DE102013207368A1 (en) | 2014-10-23 |
EP2989318A1 (en) | 2016-03-02 |
US20160069314A1 (en) | 2016-03-10 |
CN105143660A (en) | 2015-12-09 |
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