EP1880086B1 - Dispositif de reglage d'arbre a cames - Google Patents

Dispositif de reglage d'arbre a cames Download PDF

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Publication number
EP1880086B1
EP1880086B1 EP06724020A EP06724020A EP1880086B1 EP 1880086 B1 EP1880086 B1 EP 1880086B1 EP 06724020 A EP06724020 A EP 06724020A EP 06724020 A EP06724020 A EP 06724020A EP 1880086 B1 EP1880086 B1 EP 1880086B1
Authority
EP
European Patent Office
Prior art keywords
insert
locking
camshaft adjuster
plastic part
drive
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
EP06724020A
Other languages
German (de)
English (en)
Other versions
EP1880086A1 (fr
Inventor
Thomas Kleiber
Wolfram Kruhöffer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schaeffler Technologies AG and Co KG
Original Assignee
Schaeffler Technologies AG and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schaeffler Technologies AG and Co KG filed Critical Schaeffler Technologies AG and Co KG
Publication of EP1880086A1 publication Critical patent/EP1880086A1/fr
Application granted granted Critical
Publication of EP1880086B1 publication Critical patent/EP1880086B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F01L2001/3445—Details relating to the hydraulic means for changing the angular relationship
    • F01L2001/34453—Locking means between driving and driven members
    • F01L2001/34459—Locking in multiple positions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2301/00—Using particular materials

Definitions

  • the invention relates to a camshaft adjuster for an internal combustion engine.
  • camshaft adjusters are used to adjust the relative angular position between a drive element such as a drive wheel, which is connected via a traction means such as a chain or a belt in drive connection with a crankshaft of the internal combustion engine, and an output member driving a camshaft.
  • a drive element such as a drive wheel
  • a traction means such as a chain or a belt in drive connection with a crankshaft of the internal combustion engine
  • control times of valve movements of the internal combustion engine can be changed.
  • Such camshaft adjusters have a locking unit with a locking element, which produces a positive connection between the drive element and the output element in an interlocking operating position.
  • an adjustment angle of the camshaft adjuster can be defined in partial operating ranges of the internal combustion engine, for example during a start of the internal combustion engine or a hydraulic pressure drop or constant power requirement.
  • a lock is not between the drive wheel and camshaft, but rather between the aforementioned actuator, which forms the output element in this case in the context of the invention, and the rotationally fixed to the drive wheel connected drive element.
  • the actuating element has a radially hydraulically displaceable projection which can enter into a corresponding recess of the drive element.
  • the present invention is based on the finding that - for example, according to the document WO 03/076771 A1 -
  • the use of a plastic part for the drive element and / or the output element is advantageous.
  • plastic parts are used exclusively for camshaft adjusters which have no locking unit.
  • Such known non-lockable camshaft adjusters with plastic parts are based on the prejudice of the experts that the forces occurring in the region of a locking unit can not be absorbed by a plastic part, as these, for example due to excessive surface pressures or stresses, to cracks in the plastic part or a failure of the same being able to lead.
  • the plastic parts must have the required mechanical properties in a wide temperature range.
  • a locking unit For a locking unit is a reduction occurring stresses and surface pressures not or only made possible by the fact that the contact surfaces between locking element and drive element or driven element are increased, since the locking unit and the locking element should have relatively small dimensions, thus resulting in a compact-build camshaft adjuster.
  • the solution on which the invention is based is based on the use of at least one insert, on which the locking element comes into positive contact with the locking operating position at least in a direction of adjustment.
  • a suitable material can be selected, for example an iron, steel, aluminum or a high-strength plastic.
  • the insert can be prepared for the required stress in the area of the mentioned contact surfaces with suitable machining methods.
  • the insert can be optimally prepared for the contact and the transmission of the locking force between locking element and insert.
  • the locking force can be transmitted to the plastic part.
  • the outer surface of the insert can be designed arbitrarily in order to ensure optimum transmission of the locking force.
  • the outer surface can be increased almost arbitrarily, so that increases a contact area between the insert and plastic part.
  • the contour of the outer surface can be made suitable for the transmission of the locking force.
  • the drive element according to the invention is a component of the camshaft adjuster whose movement correlates with the drive movement of the crankshaft of the internal combustion engine, while the movement of the output element correlates with the movement of the camshaft of the internal combustion engine.
  • drive and / or output element can be firmly connected to the drive wheel or the camshaft of the camshaft adjuster and thus perform the same rotational angular movements as the drive wheel or the camshaft.
  • drive and / or Output element to be connected to the drive wheel or the camshaft via a geared connection with a suitable transmission or reduction. In the course of an adjusting movement of the camshaft adjuster, the relative angular position between the drive element and output element is changed.
  • the locking unit according to the invention can completely set in its locking operating position drive and driven element in both directions, specify a game, accomplish a determination only in a direction of adjustment or represent a stop for limiting an actuating movement.
  • an improved connection and transmission of the locking force results according to a further embodiment of the camshaft adjuster according to the invention, when the insert has an enlarged extension in the direction of the locking force, which may be a rectilinear extent or an extension in a circumferential direction of the camshaft adjuster.
  • the transmission length and the transfer surface of the locking force can be increased without requiring a special installation space is required transversely to the locking force.
  • an enlarged extent for example, an extension is understood in this sense, which is longer than the diameter or a transverse extent of the locking element or a dimension of a contact surface between locking element and insert.
  • the enlarged extent is in particular at least twice, three times or four times the transverse extent of the locking element or its diameter.
  • the insert transmits the locking force at least partially frictionally on the plastic part.
  • a normal force for such a frictional connection can be achieved, for example, by pressing the insert into the plastic part, in particular under radial compression, via a cross-sectional widening as a result of the locking force occurring, an elastic deformation of insert or plastic part for insertion of the insert into the plastic part and / or movement of the camshaft adjuster be generated.
  • the insert via a clamping or fastening element, such as the central screw for producing a compound of the camshaft adjuster with the camshaft, is clamped against the plastic part, whereby the normal force of the frictional engagement is specified.
  • Such a friction for example, has advantages in a mounting, since the locking position is sensitively adjustable during assembly.
  • the insert transmits the locking force at least partially positively to the plastic part.
  • the relative position of the insert with respect to the plastic part can first of all be determined constructively, whereby sensitive adjustments during assembly can be avoided.
  • a positive transmission of the locking force between the insert and plastic part a particularly stiff, u. U. safe and reliable transmission of the locking force safe.
  • the insert may be releasably connected to the plastic part to a drive or driven element.
  • An integral drive or driven element can be formed in that the insert and the plastic part are materially connected to one another.
  • the material bond can be produced in the form of an adhesive.
  • the plastic part can be sprayed onto the insert, whereby a cost-effective and simple manufacturing process is given at the same time good connection between the insert and plastic part.
  • the insert has outer teeth, projections, ribs or recesses, which positively enter into corresponding counter teeth, projections, ribs or recesses of the plastic part.
  • power transmission surfaces are created, which are preferably oriented transversely to the direction of the locking force and ensure good power transmission with low surface pressures.
  • the insert has a large extension in the direction of the locking force or circumferential direction, in a compact design several Teeth of the teeth, projections, ribs or recesses are arranged in the direction of the locking force connected in series.
  • the insert extends over a circumferential angle of 50 ° to 300 °.
  • the active surfaces of positive connections can be further increased and / or the surface of frictional contacts can be extended over the circumferential angle.
  • a design of the insert and the plastic part with corresponding teeth is in principle a toothing of the insert initially due to the finite manufacturing accuracies only in the range of one tooth or fewer teeth on the corresponding counter-toothing of the plastic part.
  • the invention is in this respect based on the finding that plastic has a relatively low modulus of elasticity, so that with a small locking force, the number of contacting teeth increases, so that the force is divided over a large contact area and many teeth, which increases the life expectancy the teeth of plastic can be significantly increased.
  • the transmittable frictional force can be significantly increased in accordance with the angle of wrap and the elastic deformation of the insert.
  • the insert is formed as a circular disk, which in itself is already a rigid, closed ring structure.
  • the annular disc has an axial or radial projection, a toothing o. ⁇ . Or a recess which cooperates positively at least in a circumferential direction with a projection or a corresponding recess of the plastic part. Due to the positive connection, firstly the assembly of the insert with respect to the plastic part can be predetermined, so that incorrect assembly is ruled out. Furthermore, a reliable transmission of the locking force is ensured by the contact between the projection and the recess.
  • this embodiment is also a non-circular outer geometry of the annular disc-shaped Inserts, which can be used in a corresponding internal geometry of the plastic part.
  • the plastic may be, for example, a thermoset. However, the use of other types of plastic is also conceivable.
  • the invention relates to a camshaft adjuster of any type, for example in vane type, axial piston or with a three-shaft or as an eccentric, wherein the adjusting movement is preferably brought about on the basis of a hydraulic actuator or an electric actuator.
  • a camshaft adjuster in vane-type construction is shown by way of example only.
  • a camshaft adjuster 1 has a drive wheel 2, which is connected via a traction means in drive connection with a crankshaft of an internal combustion engine.
  • a housing 3 of the camshaft adjuster 1 is firmly connected to the drive wheel 2 and has a substantially U-shaped half cross section with a base leg 4, which forms a radially outwardly closed lateral surface and two parallel, extending from the base leg 4 radially inwardly extending side legs. 5 6.
  • the side legs 5 or the housing 3 with the rigidly connected to this drive wheel 2 forms a drive element.
  • an output element 11 is rotatably mounted in the housing 3 so as to be limited in terms of rotation about a longitudinal axis 10-10.
  • the output member 11 is connected through a central, axially oriented bore 12 with a camshaft associated with intake and / or exhaust valves.
  • the output element 11 has a cylindrical base body 13, from which radially outwardly into the chambers 7 wings 14 extend.
  • pressure chambers 15, 16 are formed, which are each assigned to different actuating directions of the camshaft adjuster.
  • the pressure chambers 15, 16 are closed in the axial direction by the side legs 5, 6 and in the in FIG.
  • the volume of the pressure chambers 15, 16 is characterized in the course of the adjusting movement of the camshaft adjuster 1 characterized variable that the distance the wings 8, 14 changed in the circumferential direction.
  • FIG. 1 shows a locking unit 17 which locks in the illustrated locking operating position, the relative rotational angular position between the drive element 9 and driven element 11 about the longitudinal axis 10-10 or sets.
  • the locking unit 17 has a locking element 18, which is designed as a pin 19 in the present case.
  • the pin 19 is guided along an axis which is oriented parallel to the longitudinal axis 10-10, displaceably in a bore 20 of the driven element 11.
  • the pin While in the unlocked operating position of the locking unit 17, the pin is arranged completely in the driven element, in the in FIG. 1 illustrated locking operating position of the pin 19 is extended in the axial direction of the output member 11 so that it extends with a front portion 21 in a corresponding blind hole 22 of the drive element 9, in particular of the side leg 5.
  • the bore 20 is closed in the blind hole 22 opposite end region.
  • the pin 19 has a central bore 23 which extends from the blind hole 22 opposite end of the pin 19 centrally in this.
  • a pressure chamber 16 is hydraulically connected to the end face of the front portion 21 of the pin 19, so that a hydraulic pressure in the pressure chamber 16 acts on the pin 19 in the direction of the non-locking operating position.
  • a compression spring 25 which is supported in an end region on the pin 19 and is supported in the opposite end region at the bottom of the bore 20.
  • an insert 26 is arranged in the drive element 9, inserted or inserted into this, which in detail in FIG. 3 is shown.
  • the insert 26 has an approximately annular segment-shaped geometry with a circular segment-shaped or partially cylindrical inner contour 27, a concentric part-circular or partially cylindrical outer contour 28 and radially oriented or transverse to the contours 27, 28 oriented end faces 29, 30.
  • the outer contour 28 is with a toothing 31 provided with teeth with any of the known tooth geometries, here Trapezzähnen provided.
  • the insert 26 is in the viewing direction according to FIG. 2 inserted into the output element 11 and extends in the circumferential direction about the longitudinal axis 10-10.
  • the output element 11 has a recess 33, whose cross section is formed corresponding to the inner contour 27, outer contour 28 and end face 30.
  • the toothing 31 is in engagement with a corresponding toothing of the output element 11.
  • the locking element 18 is supported on the end face 29 of the insert 26, wherein the lateral surface of the front portion 21 of the pin 19 comes to rest against the end face 30.
  • the end face 29 can be designed to increase the contact surface with the front region 21 in accordance with the locking element, for example, curved.
  • the insert in the area of the end face via a bore vertically to the plane according to FIG. 3 such that an "eye" is formed into which the pin 19 enters, so that the bore completely surrounds the pin 19 and provides a contact surface in several directions.
  • the insert 26 is arranged in the circumferential direction opposite to the hydraulic connection 24.
  • FIG. 4 shows an alternative embodiment of the insert 26a, for which the inner contour 27 is also provided with a toothing 32 which can come into engagement with a suitable counter-toothing of the output element 11.
  • the insert 26, 26a extends over a circumferential angle of between 45 ° and 90 °, in particular between 50 ° and 70 °.
  • FIGS. 5 and 6 An alternative embodiment of the insert 26b is in the FIGS. 5 and 6 shown.
  • the insert 26b extends in this case over a circumferential angle of about 270 °.
  • Such an insert 26b may also have a toothing 31b, 32b in the area of the inner and / or outer contour 27b, 28b.
  • an insert 26b is formed without such a toothing.
  • a radial recess 34 into which a corresponding projection of the output element 11 enters to secure the insert 26b against displacement in the circumferential direction.
  • the insert 26b may in an elastic embodiment of the insert 26b and / or the output element 11 to a conditioning of the insert 26b in the area the outer contour 28b and / or come in the region of the inner contour 27b to the boundary of the recess 33, whereby the backup of the insert 26 is supported by frictional forces occurring.
  • FIGS. 7 to 9 show an insert 26c, which is formed substantially in the form of a circular disk with an approximately rectangular half-section 35.
  • the insert 26c has the hydraulic connection 24c, which opens into the pressure chamber 16 and acts on the pin 19 in the opposite end region.
  • the insert 26c completely surrounds the front portion 21 of the pin 19 in the locking operative position.
  • the insert 26c may have a depression or recess 37 in the region of the outer circumferential surface 36, which engages in a corresponding lug of the driven element 11 for preventing rotation of the insert 26c and / or for guaranteeing faultless installation of the insert 26c.
  • FIGS. 10 and 11 show the application of the pin 19 with a hydraulic means via a central bore 38 of the camshaft adjuster 1 and a radially oriented side channel 39 which connects the bore 38 hydraulically with the end face of the pin 19.
  • the output element 11 is preferably a metal component. It is beneficial to use a material which has a lower coefficient of expansion than the plastic used. By means of such a material, in particular in the case of a plastic unit consisting of a drive wheel, a stator, a cover in the shape of the lateral leg 5, favorable compressive internal stresses are obtained at higher operating temperatures in the transition region between the stator and the cover. This is important because plastics allow only very low tensile strength compared to compressive strength, especially when using a thermoset. You can feel that way make use of apparently negative coefficients of expansion.
  • the compressive residual stresses can be generated by a distortion of the components during assembly.
  • the insert is preferably made of a steel part, a sintered part, a hard metal part or a ceramic component.
  • the insert is formed as a circular disk, it is possible that this is pulled over the central screw of the camshaft adjuster or via another connecting element such as a screw on the plastic part.
  • This application is suitable for high loads and uses for uniform load application of the locking element, the contact surface and the coefficient of friction between plastic and insert. The efficiency of this combination is enhanced by the bond between screw plug and connector and insert, in which the plastic is sandwiched between the two friction partners.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

L'invention concerne une unité de verrouillage d'un dispositif de réglage d'arbre à cames (1) pour un moteur à combustion interne, dans laquelle une broche de verrouillage (19) établit une liaison de forme entre un élément d'entrée et un élément de sortie du dispositif de réglage d'arbre à cames (1). Selon l'invention, l'élément d'entrée et/ou l'élément de sortie sont formés par une pièce en plastique. Dans la pièce en plastique est inséré un prisonnier (26) sur lequel vient s'appuyer la broche de verrouillage (19) et qui est supporté par rapport à la pièce en plastique dans la zone d'un contour intérieur ou d'un contour extérieur. Le support à grande surface des contours permet d'utiliser du plastique comme matériau malgré les contraintes existantes élevées, une bonne transmission de force dans la pièce en plastique faisant l'objet d'une attention particulière.

Claims (4)

  1. Dispositif de réglage d'arbre à cames (1) pour un moteur à combustion interne comprenant une unité de verrouillage (17), qui, dans sa position fonctionnelle de verrouillage, fixe un angle de réglage du dispositif de réglage d'arbre à cames (1) par le fait qu'un élément de verrouillage (18) établit, au moins dans une direction de réglage, une connexion par engagement par coopération de forme entre un élément d'entraînement (9), qui est en liaison d'entraînement avec un vilebrequin du moteur à combustion interne, et un élément de sortie (11), qui est en liaison d'entraînement avec un arbre à cames du moteur à combustion interne, caractérisé en ce que l'élément d'entraînement (9) et/ou l'élément de sortie (11) sont formés d'une pièce en plastique et présentent un insert (26) sur lequel vient s'appuyer l'élément de verrouillage (18) dans la position fonctionnelle de verrouillage, au moins dans une direction de réglage, et dont la surface extérieure (contour extérieur 28, contour intérieur 27) transmet la force de verrouillage à la pièce en plastique, l'insert (26) transmet la force de verrouillage au moins en partie par engagement par friction ou au moins en partie par engagement par coopération de forme à la pièce en plastique, l'insert (26) s'étendant sur un angle circonférentiel compris entre 50° et 300°.
  2. Dispositif de réglage d'arbre à cames (1) selon la revendication 1, caractérisé en ce que l'insert (26) possède une plus grande étendue dans la direction de la force de verrouillage.
  3. Dispositif de réglage d'arbre à cames (1) selon l'une quelconque des revendications 1 ou 2, caractérisé en ce que l'insert (26) présente des dentures extérieures (31 ; 32), des saillies, des nervures ou des évidements, qui s'engagent par engagement par coopération de forme dans des dentures conjuguées, des saillies, des nervures ou des évidements correspondants de la pièce en plastique.
  4. Dispositif de réglage d'arbre à cames selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'insert (26) est réalisé sous forme de disque annulaire circulaire avec une saillie ou un évidement (37), qui coopère dans au moins une direction circonférentielle par engagement par coopération de forme avec une saillie ou un renfoncement de la pièce en plastique.
EP06724020A 2005-05-03 2006-04-05 Dispositif de reglage d'arbre a cames Expired - Fee Related EP1880086B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005020529A DE102005020529A1 (de) 2005-05-03 2005-05-03 Nockenwellenversteller
PCT/EP2006/003065 WO2006117049A1 (fr) 2005-05-03 2006-04-05 Dispositif de reglage d'arbre a cames

Publications (2)

Publication Number Publication Date
EP1880086A1 EP1880086A1 (fr) 2008-01-23
EP1880086B1 true EP1880086B1 (fr) 2011-02-16

Family

ID=36616882

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06724020A Expired - Fee Related EP1880086B1 (fr) 2005-05-03 2006-04-05 Dispositif de reglage d'arbre a cames

Country Status (6)

Country Link
US (1) US7578274B2 (fr)
EP (1) EP1880086B1 (fr)
JP (1) JP4982681B2 (fr)
KR (1) KR100940476B1 (fr)
DE (2) DE102005020529A1 (fr)
WO (1) WO2006117049A1 (fr)

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DE102008023151B4 (de) 2007-08-29 2021-08-05 Bayerische Motoren Werke Aktiengesellschaft Stelleinrichtung zur relativen Winkelverstellung

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DE102008032031A1 (de) * 2008-07-07 2010-01-14 Schaeffler Kg Nockenwellenversteller
DE102008032030A1 (de) 2008-07-07 2010-01-14 Schaeffler Kg Nockenwellenversteller und Tiefziehverfahren zur Herstellung eines Dichtdeckels für einen Nockenwellenversteller
US8171903B2 (en) 2008-12-03 2012-05-08 Hyundai Motor Company Intermediate lock pin type variable valve timing unit for vehicle and continuously variable valve timing device using the same
DE102010006415A1 (de) * 2010-02-01 2011-08-04 Schaeffler Technologies GmbH & Co. KG, 91074 Vorrichtung zum Verändern der Steuerzeiten von Gaswechselventilen einer Brennkraftmaschine
DE102011008524A1 (de) * 2011-01-13 2012-07-19 Rainer Domin Nockenwellenversteller
DE102014208601B4 (de) 2014-05-08 2022-09-29 Schaeffler Technologies AG & Co. KG Nockenwellenversteller mit längenveränderlichem Einlegeteil
DE102014213118A1 (de) 2014-07-07 2015-08-06 Schaeffler Technologies AG & Co. KG Nockenwellenversteller

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US7578274B2 (en) 2009-08-25
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KR100940476B1 (ko) 2010-02-04
EP1880086A1 (fr) 2008-01-23
DE502006008910D1 (de) 2011-03-31
WO2006117049A1 (fr) 2006-11-09
DE102005020529A1 (de) 2006-11-09
JP4982681B2 (ja) 2012-07-25

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