EP2766581B1 - Camshaft and functional elements for a camshaft - Google Patents

Camshaft and functional elements for a camshaft Download PDF

Info

Publication number
EP2766581B1
EP2766581B1 EP12778262.1A EP12778262A EP2766581B1 EP 2766581 B1 EP2766581 B1 EP 2766581B1 EP 12778262 A EP12778262 A EP 12778262A EP 2766581 B1 EP2766581 B1 EP 2766581B1
Authority
EP
European Patent Office
Prior art keywords
inner shaft
functional
camshaft
shaft
functional elements
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP12778262.1A
Other languages
German (de)
French (fr)
Other versions
EP2766581A1 (en
Inventor
Michael Kunz
Bernd Mann
Markus Melzer
Jürgen MEUSEL
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.)
Thyssenkrupp Dynamic Components Teccenter AG
Original Assignee
ThyssenKrupp Presta TecCenter AG
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 ThyssenKrupp Presta TecCenter AG filed Critical ThyssenKrupp Presta TecCenter AG
Publication of EP2766581A1 publication Critical patent/EP2766581A1/en
Application granted granted Critical
Publication of EP2766581B1 publication Critical patent/EP2766581B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • F01L1/02—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
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/08—Shape of cams
    • 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
    • F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
    • 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
    • F01L2001/0471—Assembled camshafts
    • F01L2001/0473—Composite camshafts, e.g. with cams or cam sleeve being able to move relative to the inner camshaft or a cam adjusting rod
    • 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
    • F01L2303/00—Manufacturing of components used in valve arrangements
    • F01L2303/01—Tools for producing, mounting or adjusting, e.g. some part of the distribution
    • 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
    • F01L2303/00—Manufacturing of components used in valve arrangements
    • F01L2303/02—Initial camshaft settings
    • 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
    • F01L2800/00—Methods of operation using a variable valve timing mechanism
    • F01L2800/17—Maintenance; Servicing

Definitions

  • the invention relates to a camshaft, in particular for motor vehicle engines, with an outer shaft and a coaxially arranged in the outer shaft inner shaft, with first on the outer shaft fixedly arranged functional elements, with second functional elements which are rotatably mounted on the outer shaft and rotatably attached to the inner shaft and with a phase adjuster connected to the outer shaft and inner shaft for rotating the inner shaft relative to the outer shaft, wherein the phase adjuster is fastened with the application of a torque to the inner shaft.
  • a generic camshaft is from the DE 10 2010 036 145 A1 known. Opposite the phase adjuster, a recess is provided on an end face of the inner shaft, which allows a centering or holding during assembly.
  • the US 20070215075 A1 discloses an adjustment device located in the oil separator chamber, in this case a hexagon, which, however, can also be arranged in the valve chamber in this embodiment as well as in other embodiments.
  • At least part of the first functional elements as well as the second functional elements are cams which can control the inlet or outlet of an internal combustion engine.
  • cams By adjusting the cam attached to the inner shaft relative to the cam attached to the outer shaft, a variable control of the valves of the internal combustion engine is possible. For example, depending on load and speed, the ratio of inlet time and outlet time can be changed.
  • the rotation of the inner shaft and outer shaft is effected by a phaser, which is also referred to as a phaser.
  • the phase adjuster usually comprises a stator connected to the outer shaft and a rotor connected to the inner shaft.
  • the motor is rotatably connected via the inner shaft and the rotor is connected to the outer shaft.
  • positive, positive and / or cohesive connections are also known releasable connections by screwing.
  • the screwing is usually carried out by means of a central screw, which rests in the fixed state on an end face of the phaser and engages in a receptacle of the inner shaft.
  • a holding torque opposite to the tightening torque must be applied.
  • the inner shaft Since the inner shaft is disposed within the outer shaft, this is held in the tightening of the central screw at the opposite end of the shaft.
  • an assembly tool is provided in practice, which engages in an associated receptacle of the inner shaft.
  • this torsion can be so strong that the cams remote from the phaser or other functional elements which are fastened to the inner shaft strike at an end position.
  • the inner shaft associated functional elements are fastened by connecting elements which extend through slots of the outer shaft. The length of the slots is determined by the intended adjustment between the inner shaft and outer shaft.
  • the JP 2004 044 445 A relates to a generic, non-adjustable camshaft in which all cams are fixedly mounted on a solid rod. Accordingly, the camshaft includes no mutually movable parts or a phaser. In order to hold the entire shaft during assembly, a hexagonal structure is arranged independently of the individual cams on a separate end piece.
  • the invention has for its object to reduce the twisted length of the inner shaft in an attachment of the phaser on the inner shaft by applying a torque and thus to increase the accuracy and reproducibility.
  • the object is achieved in that one of the non-rotatably connected to the inner shaft second functional elements outside a functional surface has shell-side tool receiving surfaces.
  • the second functional element provided with the tool receiving surfaces may be one of the cams connected to the inner shaft, a sensor wheel, a bearing element or a bearing ring.
  • a second functional element is used, which is close to the phaser, so that the smallest possible toroidal length is achieved.
  • the functional elements connected to the inner shaft have on the one hand a functional surface and on the other hand an axially offset annular collar, wherein the fastening of the functional elements to the inner shaft by means of a connecting element, for example with a pen, done.
  • the tool receiving surfaces can then be generated in a particularly simple manner on the annular collar.
  • the tool receiving surfaces are formed as key surfaces for receiving a tool key.
  • key surfaces for receiving a tool key.
  • two circumferentially opposite surfaces, a polygon or a differently shaped profile shape with teeth, or polygonal shape or the like may be provided.
  • the phase adjuster has a component connected to the outer shaft and a component connected to the inner shaft, wherein the connection with the inner shaft is expediently effected by a central screw.
  • the component connected to the inner shaft is preferably the rotor of the phaser.
  • the subject matter of the invention is also a functional element for a camshaft, in particular a cam, with a hub, a shell-side functional surface and an annular collar offset from the functional surface along the axis of the hub, wherein the above-described tool receiving surfaces are formed on the annular collar.
  • the Fig. 1 shows the known from the prior art construction of an adjustable camshaft of an internal combustion engine with an outer shaft 1 and a coaxially arranged in the outer shaft 1 inner shaft 2.
  • first functional elements 3 are fixed in the form of cams.
  • second functional elements 4a, 4b are non-rotatably mounted in the form of cams and in the form of a sensor wheel.
  • a phase adjuster 5 is arranged on the front side.
  • the phaser 5 which is also referred to as a phaser, has a stator 6 connected to the outer shaft 1 and a rotor 7 connected to the inner shaft 2.
  • a rotation between the stator 6 and the rotor 7 can for example be done hydraulically, so that a controlled adjustment of the inner shaft 2 relative to the outer shaft 1 is possible by a corresponding control.
  • the rotor 7 is fastened with a central screw 8 by applying a tightening torque to the inner shaft 1.
  • the attachment of the second functional elements 4a, 4b on the inner shaft takes place in the embodiment by connecting elements 9 such as pins, which are pressed during assembly and are guided through not shown in the figures longitudinal slots of the outer shaft 1.
  • the inner shaft 2 In order to secure the rotor 7 by means of the central screw 8 on the inner shaft 2, the inner shaft 2 must be held in the tightening of the central screw 8.
  • a tool holder 10 is provided at the opposite end of the inner shaft 2.
  • the length of the inner shaft 2 necessary for the transmission is reduced by being able to be held against one of the second functional elements 4a, 4b during tightening. That's how it shows Fig. 2 an embodiment according to the invention, in which of the second, connected to the inner shaft 2 functional elements 4a, 4b, the first functional element 4a is provided in the form of a cam with shell-side tool receiving surfaces 11. These tool receiving surfaces 11 are located on an annular collar 13 outside the actual functional surface 12a, which has provided for controlling the valves cam shape.
  • the first of the second functional elements 4a, 4b is already equipped with tool receiving surfaces 11.
  • a cam but also another second functional element 4b in the form of a sensor wheel can be provided with tool receiving surfaces 11, whereby the arrangement of the tool receiving surfaces 11 outside of the functional surface 12b of the sensor wheel on an annular collar 13 takes place here as well.
  • Fig. 5 shows an alternative embodiment in which instead of two exactly opposite tool receiving surfaces 11, the shape of a polygon is realized. This results in the advantage that a tool for holding in different orientations can be applied.
  • FIG. 6 an embodiment in which two opposing tool receiving surfaces 11 are arranged on the second functional element 4b in the form of a sensor wheel.
  • the accuracy and reliability in the attachment of the phaser 5 on the inner shaft 2 by means of the central screw 8 can be increased.
  • the tool receiving surfaces 11 can also be otherwise used to hold the associated second functional elements 4a, 4b, for example, when the second functional elements 4a are ground in the form of cams before or after assembly to measure.
  • Fig. 7a and 7b show the section of a camshaft with an alternative embodiment of the second, connected to the inner shaft 2 functional elements 4a in the form of cams.
  • the cam has no annular collar 13.
  • the functional surface 12a is interrupted by a recess 14, wherein in the recess on the one hand the connecting element 9 is arranged in the form of a pin and the tool receiving surfaces 11 are provided.
  • the described alternative embodiment of the second functional elements 4a leads to a lower material and space requirement.

Landscapes

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

Description

Die Erfindung betrifft eine Nockenwelle, insbesondere für Kraftfahrzeugmotoren, mit einer Außenwelle und einer koaxial in der Außenwelle angeordneten Innenwelle, mit ersten an der Außenwelle fest angeordneten Funktionselementen, mit zweiten Funktionselementen, die drehbar an der Außenwelle angeordnet und drehfest an der Innenwelle befestigt sind und mit einem an die Außenwelle und Innenwelle angeschlossenen Phasensteller zur Verdrehung der Innenwelle gegenüber der Außenwelle, wobei der Phasensteller unter Aufbringung eines Drehmomentes an der Innenwelle befestigt ist.The invention relates to a camshaft, in particular for motor vehicle engines, with an outer shaft and a coaxially arranged in the outer shaft inner shaft, with first on the outer shaft fixedly arranged functional elements, with second functional elements which are rotatably mounted on the outer shaft and rotatably attached to the inner shaft and with a phase adjuster connected to the outer shaft and inner shaft for rotating the inner shaft relative to the outer shaft, wherein the phase adjuster is fastened with the application of a torque to the inner shaft.

Eine gattungsgemäße Nockenwelle ist aus der DE 10 2010 036 145 A1 bekannt. Gegenüberliegend des Phasenstellers ist an einer Stirnseite der Innenwelle eine Einbuchtung vorgesehen, welche bei der Montage eine Zentrierung bzw. ein Festhalten ermöglicht.A generic camshaft is from the DE 10 2010 036 145 A1 known. Opposite the phase adjuster, a recess is provided on an end face of the inner shaft, which allows a centering or holding during assembly.

Dem US 20070215075 A1 offenbart einem im Ölabscheiderraum gelegene Einstelleinrichtung, hier einen Sechskant auf, welcher jedoch bei dieser sowie bei anderen Ausführungsformen auch im Ventilraum angeordnet sein kann.the US 20070215075 A1 discloses an adjustment device located in the oil separator chamber, in this case a hexagon, which, however, can also be arranged in the valve chamber in this embodiment as well as in other embodiments.

Zumindest ein Teil der ersten Funktionselemente sowie der zweiten Funktionselemente sind Nocken, welche den Einlass bzw. Auslass eines Verbrennungsmotors steuern können. Durch eine Verstellung der an der Innenwelle befestigten Nocken gegenüber den an der Außenwelle befestigten Nocken ist eine variable Steuerung der Ventile des Verbrennungsmotors möglich. So kann beispielsweise last- und drehzahlabhängig das Verhältnis von Einlasszeit und Auslasszeit verändert werden. Die Verdrehung von Innenwelle und Außenwelle erfolgt durch einen Phasensteller, der auch als Phaser bezeichnet wird.At least part of the first functional elements as well as the second functional elements are cams which can control the inlet or outlet of an internal combustion engine. By adjusting the cam attached to the inner shaft relative to the cam attached to the outer shaft, a variable control of the valves of the internal combustion engine is possible. For example, depending on load and speed, the ratio of inlet time and outlet time can be changed. The rotation of the inner shaft and outer shaft is effected by a phaser, which is also referred to as a phaser.

Der Phasensteller umfasst üblicherweise einen mit der Außenwelle verbundenen Stator sowie einen mit der Innenwelle verbundenen Rotor. Möglich ist jedoch auch, dass der Motor drehfest über der Innenwelle und der Rotor mit der Außenwelle verbunden ist. Neben kraft-, form- und/oder stoffschlüssigen Verbindungen sind auch lösbare Verbindungen durch ein Verschrauben bekannt. Die Verschraubung erfolgt dabei üblicherweise mittels einer Zentralschraube, die im fixierten Zustand an einer Stirnseite des Phasenstellers anliegt und in eine Aufnahme der Innenwelle eingreift. Um den Rotor an der Innenwelle mittels der Zentralschraube mit einem vorgegebenen Anzugsmoment befestigen zu können, muss ein dem Anzugsmoment entgegengerichtetes Haltemoment aufgebracht werden. Da die Innenwelle innerhalb der Außenwelle angeordnet ist, wird diese bei dem Festziehen der Zentralschraube an dem gegenüberliegenden Wellenende festgehalten. Hierzu ist in der Praxis ein Montagewerkzeug vorgesehen, welches in eine zugeordnete Aufnahme der Innenwelle eingreift. Es ergibt sich dabei der Nachteil, dass das Anzugsmoment über die gesamte Länge der Innenwelle übertragen wird, die entsprechend in einem erheblichen Maße tordiert wird. Je nach Länge der Innenwelle kann diese Torsion so stark sein, dass die dem Phasensteller entfernt liegenden Nocken oder anderen Funktionselemente, welche an der Innenwelle befestigt sind, an einer Endposition anschlagen. Dabei ist zu berücksichtigen, dass die der Innenwelle zugeordneten Funktionselemente durch Verbindungselemente befestigt sind, welche sich durch Schlitze der Außenwelle hindurch erstrecken. Die Länge der Schlitze wird dabei von dem vorgesehenen Verstellweg zwischen Innenwelle und Außenwelle vorgegeben.The phase adjuster usually comprises a stator connected to the outer shaft and a rotor connected to the inner shaft. However, it is also possible that the motor is rotatably connected via the inner shaft and the rotor is connected to the outer shaft. In addition to positive, positive and / or cohesive connections are also known releasable connections by screwing. The screwing is usually carried out by means of a central screw, which rests in the fixed state on an end face of the phaser and engages in a receptacle of the inner shaft. In order to fasten the rotor to the inner shaft by means of the central screw with a predetermined tightening torque, a holding torque opposite to the tightening torque must be applied. Since the inner shaft is disposed within the outer shaft, this is held in the tightening of the central screw at the opposite end of the shaft. For this purpose, an assembly tool is provided in practice, which engages in an associated receptacle of the inner shaft. This results in the disadvantage that the tightening torque is transmitted over the entire length of the inner shaft, which is accordingly twisted to a considerable extent. Depending on the length of the inner shaft, this torsion can be so strong that the cams remote from the phaser or other functional elements which are fastened to the inner shaft strike at an end position. It should be noted that the inner shaft associated functional elements are fastened by connecting elements which extend through slots of the outer shaft. The length of the slots is determined by the intended adjustment between the inner shaft and outer shaft.

Grundsätzlich besteht das Problem, dass durch die Torsion der gesamten Innenwelle die Gefahr einer erhöhten Ungenauigkeit besteht. So kann Reibung oder ein Verklemmen dazu führen, dass nicht das gesamte aufgebrachte Drehmoment auch tatsächlich an der Schraubverbindung wirkt. Insbesondere hinsichtlich erhöhter Anforderungen an die Dokumentation des Produktionsprozesses sind die beschriebenen Unsicherheiten nachteilig. Zusätzlich führt die Torsion der gesamten Innenwelle auch zu einer Verlängerung des bei einem Festziehen zurückzulegenden Winkelbereichs.Basically there is the problem that the risk of increased inaccuracy due to the torsion of the entire inner shaft. Thus, friction or jamming can lead to the fact that not all the applied torque actually acts on the screw connection. In particular with regard to increased requirements for the documentation of the production process, the described uncertainties are disadvantageous. In addition, the torsion of the entire inner shaft also leads to an extension of the angle range to be covered during tightening.

Die JP 2004 044 445 A betrifft eine gattungsgemäße, nicht verstellbare Nockenwelle, bei der sämtliche Nocken fest auf einem massiven Stab angeordnet sind. Entsprechend umfasst die Nockenwelle auch keine zueinander beweglichen Teile oder einen Phasensteller. Um die gesamte Welle bei der Montage festhalten zu können, ist an einem separaten Endstück eine hexagonale Struktur unabhängig von den einzelnen Nocken angeordnet.The JP 2004 044 445 A relates to a generic, non-adjustable camshaft in which all cams are fixedly mounted on a solid rod. Accordingly, the camshaft includes no mutually movable parts or a phaser. In order to hold the entire shaft during assembly, a hexagonal structure is arranged independently of the individual cams on a separate end piece.

Vor diesem Hintergrund liegt der Erfindung die Aufgabe zugrunde, bei einer Befestigung des Phasenstellers an der Innenwelle durch das Aufbringen eines Drehmomentes die tordierte Länge der Innenwelle zu verringern und damit die Genauigkeit und Reproduzierbarkeit zu erhöhen.Against this background, the invention has for its object to reduce the twisted length of the inner shaft in an attachment of the phaser on the inner shaft by applying a torque and thus to increase the accuracy and reproducibility.

Ausgehend von einer Nockenwelle mit den eingangs beschriebenen Merkmalen wird die Aufgabe erfindungsgemäß dadurch gelöst, dass eines der drehfest mit der Innenwelle verbundenen zweiten Funktionselemente außerhalb einer Funktionsfläche mantelseitige Werkzeugaufnahmeflächen aufweist. Bei dem mit den Werkzeugaufnahmeflächen versehenen zweiten Funktionselement kann es sich um einen der mit der Innenwelle verbundenen Nocken, ein Sensorrad, ein Lagerelement oder ein Lagerring handeln. Grundsätzlich ist auch möglich, ein zusätzliches Teil vorzusehen, welches lediglich das Gegenhalten bei der Befestigung des Phasenstellers ermöglichen soll.Based on a camshaft with the features described above, the object is achieved in that one of the non-rotatably connected to the inner shaft second functional elements outside a functional surface has shell-side tool receiving surfaces. The second functional element provided with the tool receiving surfaces may be one of the cams connected to the inner shaft, a sensor wheel, a bearing element or a bearing ring. In principle, it is also possible to provide an additional part, which should only enable counteracting in the attachment of the phaser.

Zweckmäßigerweise wird ein zweites Funktionselement genutzt, welches nahe des Phasenstellers liegt, damit eine möglichst geringe toridale Länge erreicht wird. Grundsätzlich besteht aber auch die Möglichkeit, mehrere Funktionselemente mit Werkzeugaufnahmeflächen zu versehen. Wenn die Werkzeugaufnahmeflächen beispielsweise an einem Nocken gebildet sind, brauchen keine unterschiedlichen Nocken montiert werden, wenn alle mit Werkzeugaufnahmeflächen versehen sind.Appropriately, a second functional element is used, which is close to the phaser, so that the smallest possible toroidal length is achieved. In principle, however, it is also possible to provide several functional elements with tool receiving surfaces. For example, if the tool receiving surfaces are formed on a cam, different cams need not be mounted when all are provided with tool receiving surfaces.

Bei verstellbaren Nockenwellen mit einer Innenwelle und einer Außenwelle ist es bekannt, dass die mit der Innenwelle verbundenen Funktionselemente einerseits eine Funktionsfläche und andererseits einen axial dazu versetzten Ringbund aufweisen, wobei an dem Ringbund auch die Befestigung der Funktionselemente mit der Innenwelle mittels eines Verbindungselementes, beispielsweise mit einem Stift, erfolgt. Die Werkzeugaufnahmeflächen können dann auf besonders einfache Weise an dem Ringbund erzeugt werden.In the case of adjustable camshafts with an inner shaft and an outer shaft, it is known that the functional elements connected to the inner shaft have on the one hand a functional surface and on the other hand an axially offset annular collar, wherein the fastening of the functional elements to the inner shaft by means of a connecting element, for example with a pen, done. The tool receiving surfaces can then be generated in a particularly simple manner on the annular collar.

Gemäß einer bevorzugten Ausgestaltung der Erfindung sind die Werkzeugaufnahmeflächen als Schlüsselflächen zur Aufnahme eines Werkzeugschlüssels ausgebildet. Beispielsweise können zwei an dem Umfang gegenüberliegende Flächen, ein Vieleck oder auch eine anders gestaltete Profilform mit Zähnen, oder Polygonform oder dergleichen vorgesehen sein. Bei der Befestigung des Phasenstellers an der Innenwelle wird ein entsprechendes Montagewerkzeug mit den Werkzeugaufnahmeflächen in Eingriff gebracht und dort fixiert. Die bei dem Festziehen auftretenden Drehmomente werden so von dem Montagewerkzeug aufgenommen.According to a preferred embodiment of the invention, the tool receiving surfaces are formed as key surfaces for receiving a tool key. For example, two circumferentially opposite surfaces, a polygon or a differently shaped profile shape with teeth, or polygonal shape or the like may be provided. When attaching the phaser on the inner shaft, a corresponding mounting tool is brought into engagement with the tool receiving surfaces and fixed there. The torques occurring during tightening are thus absorbed by the mounting tool.

Insbesondere ist es möglich, dass bei dem Festhalten des mit den Werkzeugaufnahmeflächen versehenen Funktionselementes die auftretenden Drehmomente aufgenommen werden. Durch einen Vergleich mit den an dem Phasensteller aufgebrachten Anzugsmomenten kann so sichergestellt werden, dass die Befestigung nicht durch ein Klemmen oder dergleichen beeinträchtigt ist.In particular, it is possible for the torques occurring to be absorbed when holding the functional element provided with the tool receiving surfaces. By comparison with the tightening torques applied to the phase adjuster, it is thus possible to ensure that the fastening is not impaired by jamming or the like.

Der Phasensteller weist ein mit der Außenwelle verbundenes Bauteil und ein mit der Innenwelle verbundenes Bauteil auf, wobei die Verbindung mit der Innenwelle zweckmäßigerweise durch eine Zentralschraube erfolgt. Das mit der Innenwelle verbundene Bauteil ist bevorzugt der Rotor des Phasenstellers. Gegenstand der Erfindung ist auch ein Funktionselement für eine Nockenwelle, insbesondere ein Nocken, mit einer Nabe, einer mantelseitigen Funktionsfläche und einem gegenüber der Funktionsfläche entlang der Achse der Nabe versetzten Ringbund, wobei an dem Ringbund die zuvor beschriebenen Werkzeugaufnahmeflächen gebildet sind.The phase adjuster has a component connected to the outer shaft and a component connected to the inner shaft, wherein the connection with the inner shaft is expediently effected by a central screw. The component connected to the inner shaft is preferably the rotor of the phaser. The subject matter of the invention is also a functional element for a camshaft, in particular a cam, with a hub, a shell-side functional surface and an annular collar offset from the functional surface along the axis of the hub, wherein the above-described tool receiving surfaces are formed on the annular collar.

Die Erfindung wird im Folgenden anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung erläutert. Es zeigen in einer schematischen Darstellung:

Fig. 1
eine verstellbare Nockenwelle, mit einem lösbar befestigten Phasensteller gemäß dem Stand der Technik in einem Längsschnitt,
Fig. 2
eine erfindungsgemäße Nockenwelle in einer perspektivischen Ansicht,
Fig. 3
einen Teilbereich der in Fig. 2 dargestellten Nockenwelle in einem Längsschnitt entlang der Linie A-A der Fig. 2,
Fig. 4a und 4b
ein mit einer Innenwelle verbundener Nocken in einer Detailansicht von der Seite bzw. in einer Perspektive,
Fig. 5
eine alternative Ausgestaltung eines mit der Innenwelle verbundenen Nockens,
Fig. 6
ein mit der Innenwelle verbundenes Sensorrad,
Fig. 7a und 7b
einen Ausschnitt einer verstellbaren Nockenwelle mit einer alternativen Ausgestaltung eines mit der Innenwelle verbundenen Nockens in einer Perspektive bzw. einer Seitenansicht.
The invention will be explained in the following with reference to a drawing showing only one exemplary embodiment. They show in a schematic representation:
Fig. 1
an adjustable camshaft, with a detachably mounted phaser according to the prior art in a longitudinal section,
Fig. 2
a camshaft according to the invention in a perspective view,
Fig. 3
a subarea of in Fig. 2 shown camshaft in a longitudinal section along the line AA Fig. 2 .
Fig. 4a and 4b
a cam connected to an inner shaft in a detail view from the side or in a perspective,
Fig. 5
an alternative embodiment of a cam connected to the inner shaft,
Fig. 6
a sensor wheel connected to the inner shaft,
Fig. 7a and 7b
a section of an adjustable camshaft with an alternative embodiment of a cam connected to the inner shaft in a perspective or a side view.

Die Fig. 1 zeigt den aus dem Stand der Technik bekannten Aufbau einer verstellbaren Nockenwelle eines Verbrennungsmotors mit einer Außenwelle 1 und eine koaxial in der Außenwelle 1 angeordneten Innenwelle 2. An der Außenwelle 1 sind erste Funktionselemente 3 in Form von Nocken befestigt. An der Innenwelle 2 sind drehfest zweite Funktionselemente 4a, 4b in Form von Nocken sowie in Form eines Sensorrades befestigt. Um die ersten Funktionselemente 3 gegenüber den zweiten Funktionselementen 4a, 4b zu verdrehen, ist stirnseitig ein Phasensteller 5 angeordnet.The Fig. 1 shows the known from the prior art construction of an adjustable camshaft of an internal combustion engine with an outer shaft 1 and a coaxially arranged in the outer shaft 1 inner shaft 2. On the outer shaft 1, first functional elements 3 are fixed in the form of cams. On the inner shaft 2, second functional elements 4a, 4b are non-rotatably mounted in the form of cams and in the form of a sensor wheel. In order to rotate the first functional elements 3 relative to the second functional elements 4a, 4b, a phase adjuster 5 is arranged on the front side.

Der Phasensteller 5, der auch als Phaser bezeichnet wird, weist einen mit der Außenwelle 1 verbundenen Stator 6 sowie einen mit der Innenwelle 2 verbundenen Rotor 7 auf. Eine Verdrehung zwischen Stator 6 und Rotor 7 kann beispielsweise hydraulisch erfolgen, so dass durch eine entsprechende Ansteuerung eine kontrollierte Verstellung der Innenwelle 2 gegenüber der Außenwelle 1 möglich ist.The phaser 5, which is also referred to as a phaser, has a stator 6 connected to the outer shaft 1 and a rotor 7 connected to the inner shaft 2. A rotation between the stator 6 and the rotor 7 can for example be done hydraulically, so that a controlled adjustment of the inner shaft 2 relative to the outer shaft 1 is possible by a corresponding control.

Der Rotor 7 ist mit einer Zentralschraube 8 unter Aufbringung eines Anzugsmomentes an der Innenwelle 1 befestigt. Die Befestigung der zweiten Funktionselemente 4a, 4b an der Innenwelle erfolgt in dem Ausführungsbeispiel durch Verbindungselemente 9 wie beispielsweise Stifte, die bei der Montage eingepresst werden und durch in den Figuren nicht dargestellte Längsschlitze der Außenwelle 1 hindurchgeführt sind. Um den Rotor 7 mittels der Zentralschraube 8 an der Innenwelle 2 befestigen zu können, muss die Innenwelle 2 bei dem Anziehen der Zentralschraube 8 festgehalten werden. Gemäß den aus dem Stand der Technik bekannten Ausführungen ist dazu an dem gegenüberliegenden Ende der Innenwelle 2 eine Werkzeugaufnahme 10 vorgesehen.The rotor 7 is fastened with a central screw 8 by applying a tightening torque to the inner shaft 1. The attachment of the second functional elements 4a, 4b on the inner shaft takes place in the embodiment by connecting elements 9 such as pins, which are pressed during assembly and are guided through not shown in the figures longitudinal slots of the outer shaft 1. In order to secure the rotor 7 by means of the central screw 8 on the inner shaft 2, the inner shaft 2 must be held in the tightening of the central screw 8. According to the known in the prior art embodiments, a tool holder 10 is provided at the opposite end of the inner shaft 2.

Dabei ergibt sich der Nachteil, dass bei dem Festziehen die gesamte Innenwelle 2 tordiert wird. Auch wenn die Innenwelle 2 an sich den Beanspruchungen standhalten kann, führt der geringe Durchmesser zu einer erhöhten Torsionsempfindlichkeit.This results in the disadvantage that when tightening the entire inner shaft 2 is twisted. Even if the inner shaft 2 can withstand the stresses per se, the small diameter leads to an increased torsional sensitivity.

Ausgehend von der bekannten Ausgestaltung gemäß der Fig. 1 ist erfindungsgemäß vorgesehen, dass die zur Übertragung notwendige Länge der Innenwelle 2 dadurch verringert wird, dass an einem der zweiten Funktionselemente 4a, 4b bei dem Festziehen gegengehalten werden kann. So zeigt die Fig. 2 eine erfindungsgemäße Ausgestaltung, bei der von den zweiten, mit der Innenwelle 2 verbundenen Funktionselementen 4a, 4b das erste Funktionselement 4a in Form eines Nockens mit mantelseitigen Werkzeugaufnahmeflächen 11 versehen ist. Diese Werkzeugaufnahmeflächen 11 befinden sich an einem Ringbund 13 außerhalb der eigentlichen Funktionsfläche 12a, welche die zur Steuerung der Ventile vorgesehene Nockenform aufweist.Starting from the known embodiment according to the Fig. 1 According to the invention, it is provided that the length of the inner shaft 2 necessary for the transmission is reduced by being able to be held against one of the second functional elements 4a, 4b during tightening. That's how it shows Fig. 2 an embodiment according to the invention, in which of the second, connected to the inner shaft 2 functional elements 4a, 4b, the first functional element 4a is provided in the form of a cam with shell-side tool receiving surfaces 11. These tool receiving surfaces 11 are located on an annular collar 13 outside the actual functional surface 12a, which has provided for controlling the valves cam shape.

Besonders vorteilhaft ist es, wenn ausgehend von dem Phasensteller 5 bereits das erste der zweiten Funktionselemente 4a, 4b mit Werkzeugaufnahmeflächen 11 ausgerüstet ist.It is particularly advantageous if, starting from the phase adjuster 5, the first of the second functional elements 4a, 4b is already equipped with tool receiving surfaces 11.

Der Fig. 2 ist des Weiteren zu entnehmen, dass nicht nur ein Nocken, sondern auch ein anderes zweites Funktionselement 4b in Form eines Sensorrades mit Werkzeugaufnahmeflächen 11 versehen werden kann, wobei auch hier die Anordnung der Werkzeugaufnahmeflächen 11 außerhalb der Funktionsfläche 12b des Sensorrades an einem Ringbund 13 erfolgt.Of the Fig. 2 Furthermore, it can be seen that not only a cam, but also another second functional element 4b in the form of a sensor wheel can be provided with tool receiving surfaces 11, whereby the arrangement of the tool receiving surfaces 11 outside of the functional surface 12b of the sensor wheel on an annular collar 13 takes place here as well.

In der Fig. 2 sind lediglich zur Verdeutlichung zwei der zweiten Funktionselemente 4a, 4b mit Werkzeugaufnahmeflächen 11 ausgerüstet. Grundsätzlich ist es ausreichend, wenn lediglich eines der zweiten Funktionselemente 4a, 4b entsprechende Werkzeugaufnahmeflächen 11 aufweist.In the Fig. 2 only two of the second functional elements 4a, 4b are equipped with tool receiving surfaces 11 for clarity. In principle, it is sufficient if only one of the second functional elements 4a, 4b has corresponding tool receiving surfaces 11.

Die Details des in der Fig. 2 dargestellten zweiten Funktionselementes 4a in Form eines Nockens sind in den Fig. 3, 4a und 4b dargestellt. In der Fig. 3 ist zu erkennen, dass der Ringbund 13 durch die Einbringung der Werkzeugaufnahmeflächen 11 in einem gewissen Maße geschwächt ist. Vor diesem Hintergrund ist es zweckmäßig, wenn gemäß dem Ausführungsbeispiel die Werkzeugaufnahmeflächen 11 gegenüber dem Stift an dem Umfang des Ringbundes 13 um 90° versetzt angeordnet sind.The details of in the Fig. 2 shown second functional element 4a in the form of a cam are in the Fig. 3 . 4a and 4b shown. In the Fig. 3 It can be seen that the annular collar 13 is weakened by the introduction of the tool receiving surfaces 11 to some extent. Against this background, it is expedient if, according to the embodiment, the tool receiving surfaces 11 are arranged offset relative to the pin on the circumference of the annular collar 13 by 90 °.

Fig. 5 zeigt eine alternative Ausgestaltung, bei der anstelle von zwei genau gegenüberliegenden Werkzeugaufnahmeflächen 11 die Form eines Vielecks realisiert ist. Es ergibt sich der Vorteil, dass ein Werkzeug zum Gegenhalten in verschiedenen Ausrichtungen angesetzt werden kann. Fig. 5 shows an alternative embodiment in which instead of two exactly opposite tool receiving surfaces 11, the shape of a polygon is realized. This results in the advantage that a tool for holding in different orientations can be applied.

Schließlich zeigt die Fig. 6 eine Ausgestaltung, bei der zwei gegenüberliegende Werkzeugaufnahmeflächen 11 an dem zweiten Funktionselement 4b in Form eines Sensorrades angeordnet sind.Finally, the shows Fig. 6 an embodiment in which two opposing tool receiving surfaces 11 are arranged on the second functional element 4b in the form of a sensor wheel.

Durch die beschriebene Ausgestaltung der Nockenwelle können die Genauigkeit und Zuverlässigkeit bei der Befestigung des Phasenstellers 5 an der Innenwelle 2 mittels der Zentralschraube 8 erhöht werden. Darüber hinaus können die Werkzeugaufnahmeflächen 11 aber auch noch anderweitig genutzt werden, um die zugeordneten zweiten Funktionselemente 4a, 4b festzuhalten, beispielsweise wenn die zweiten Funktionselemente 4a in Form von Nocken vor oder nach der Montage auf Maß geschliffen werden.The described embodiment of the camshaft, the accuracy and reliability in the attachment of the phaser 5 on the inner shaft 2 by means of the central screw 8 can be increased. In addition, however, the tool receiving surfaces 11 can also be otherwise used to hold the associated second functional elements 4a, 4b, for example, when the second functional elements 4a are ground in the form of cams before or after assembly to measure.

Die Fig. 7a und 7b zeigen den Ausschnitt einer Nockenwelle mit einer alternativen Ausgestaltung der zweiten, mit der Innenwelle 2 verbundenen Funktionselemente 4a in Form von Nocken. Im Gegensatz zu den zuvor beschriebenen Ausführungsformen weist der Nocken keinen Ringbund 13 auf. Statt dessen ist an einem Teil der Mantelfläche des Nockens die Funktionsfläche 12a durch eine Aussparung 14 unterbrochen, wobei in der Aussparung einerseits das Verbindungselement 9 in Form eines Stiftes angeordnet ist und die Werkzeugaufnahmeflächen 11 vorgesehen sind. Die beschriebene alternative Ausgestaltung der zweiten Funktionselemente 4a führt zu einem geringeren Material- und Platzbedarf.The Fig. 7a and 7b show the section of a camshaft with an alternative embodiment of the second, connected to the inner shaft 2 functional elements 4a in the form of cams. In contrast to the previously described embodiments, the cam has no annular collar 13. Instead, at a part of the lateral surface of the cam, the functional surface 12a is interrupted by a recess 14, wherein in the recess on the one hand the connecting element 9 is arranged in the form of a pin and the tool receiving surfaces 11 are provided. The described alternative embodiment of the second functional elements 4a leads to a lower material and space requirement.

Claims (7)

  1. A camshaft, in particular for motor vehicle engines,
    having an outer shaft (1) and an inner shaft (2) arranged coaxially in the outer shaft (1),
    having first functional elements (3) arranged fixedly on the outer shaft (1),
    having second functional elements (4a, 4b), which are arranged rotatably on the outer shaft (1) and are fastened in a rotationally fixed manner to the inner shaft (2),
    and having a phase adjuster (5), which is connected to the outer shaft (1) and the inner shaft (2), for rotating the inner shaft (2) in relation to the outer shaft (1), the phase adjuster (5) being fastened to the inner shaft (2) with application of a torque,
    characterised in that
    one of the functional elements (4a, 4b) connected in a rotationally fixed manner to the inner shaft (2) has tool-receiving faces (11) on the lateral surface side outside a functional face (12a, 12b).
  2. The camshaft according to Claim 1, characterised in that the phase adjuster (5) has a stator (6), which is connected to the outer shaft (1), and a rotor (7), which is connected to the inner shaft (2) by means of a screw-fastening.
  3. The camshaft according to Claim 1 or 2, characterised in that the phase adjuster (5) and the inner shaft (2) are connected by a central screw-fastening (8).
  4. The camshaft according to any one of Claims 1 to 3, characterised in that the tool-receiving faces (11) are formed as wrench faces for receiving a wrench.
  5. The camshaft according to any one of Claims 1 to 4, characterised in that the functional element (4a, 4b) that is provided with the tool-receiving faces (11) has an annular collar (13), which is arranged offset in relation to the functional faces (12a, 12b) in the axial direction of the camshaft and at which the functional element (4a, 4b) is fastened to the inner shaft (2) with a connecting element (9) and on which the tool-receiving faces (11) are formed.
  6. The camshaft according to any one of Claims 1 to 5, characterised in that the first of the second functional elements (4a), starting from the phase adjuster (5), is provided with tool-receiving faces (11).
  7. A functional element (4a, 4b) for a camshaft according to any one of Claims 1 to 6, in particular cam, having a hub, a functional face (12a, 12b) on the lateral surface side and an annular collar (13), which is offset along the axis of the hub in relation to the functional face (12a, 12b), tool-receiving faces (11) being formed on the annular collar (13).
EP12778262.1A 2011-10-10 2012-10-08 Camshaft and functional elements for a camshaft Active EP2766581B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011054350A DE102011054350A1 (en) 2011-10-10 2011-10-10 Camshaft and functional elements for a camshaft
PCT/EP2012/069866 WO2013053669A1 (en) 2011-10-10 2012-10-08 Camshaft and functional elements for a camshaft

Publications (2)

Publication Number Publication Date
EP2766581A1 EP2766581A1 (en) 2014-08-20
EP2766581B1 true EP2766581B1 (en) 2015-09-09

Family

ID=47076169

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12778262.1A Active EP2766581B1 (en) 2011-10-10 2012-10-08 Camshaft and functional elements for a camshaft

Country Status (5)

Country Link
US (1) US9200544B2 (en)
EP (1) EP2766581B1 (en)
CN (1) CN103987927B (en)
DE (1) DE102011054350A1 (en)
WO (1) WO2013053669A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016206674A1 (en) 2016-04-20 2017-10-26 Mahle International Gmbh Method for gripping and holding an adjustable camshaft
DE102016206672A1 (en) 2016-04-20 2017-10-26 Mahle International Gmbh Method for gripping and holding an adjustable camshaft

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011052822A1 (en) * 2011-08-18 2013-02-21 Thyssenkrupp Presta Teccenter Ag Camshaft, in particular for motor vehicle engines
DE102013216567A1 (en) * 2013-08-21 2015-02-26 Mahle International Gmbh alignment
DE102013113444A1 (en) 2013-12-04 2015-06-11 Thyssenkrupp Presta Teccenter Ag Receiving assembly for grinding a camshaft and method for grinding the camshaft
KR101427904B1 (en) * 2014-07-10 2014-08-08 주식회사 미보 Concentric cam shaft and manufacturing method of rotation cam and fixed cam for concentric cam shaft
DE102015200139B4 (en) * 2015-01-08 2021-07-08 Schaeffler Technologies AG & Co. KG Camshaft adjuster connection to a double camshaft
DE102015113356A1 (en) 2015-08-13 2017-02-16 Thyssenkrupp Ag Adjustable camshaft with a phase plate
DE102015113520A1 (en) * 2015-08-17 2017-02-23 Thyssenkrupp Presta Teccenter Ag module assembly
FR3043716B1 (en) * 2015-11-12 2019-10-11 Psa Automobiles Sa. VARIABLE DISTRIBUTION ASSEMBLY FOR AN INTERNAL COMBUSTION ENGINE
GB2556921B (en) * 2016-11-25 2019-03-13 Ford Global Tech Llc A method of adaptively controlling a motor vehicle engine system
DE102021213496A1 (en) 2021-11-30 2023-06-01 Thyssenkrupp Ag Method for assembling a functional element on a sliding camshaft with the aid of an assembly tool and using external teeth or a non-round section of a sliding camshaft

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2277361B (en) * 1993-04-21 1995-11-08 T & N Technology Ltd Manufacture of camshafts
JP4082109B2 (en) * 2002-07-10 2008-04-30 日産自動車株式会社 Assembled camshaft for internal combustion engine
DE102005040934A1 (en) * 2005-02-03 2006-08-17 Mahle International Gmbh Adjustable camshaft, in particular for internal combustion engines of motor vehicles, with a hydraulic adjusting device
DE102006012611A1 (en) * 2006-03-20 2007-09-27 Mahle International Gmbh Cylinder head of an internal combustion engine
DE102007017094A1 (en) * 2007-04-10 2008-10-16 Mahle International Gmbh Cam for a cam or control shaft
DE102007027979B4 (en) * 2007-06-19 2015-07-23 Audi Ag Valve train for gas exchange valves of an internal combustion engine with camshaft tunnel bearings
US8096275B2 (en) * 2009-09-15 2012-01-17 GM Global Technology Operations LLC Camshaft having a tuned mass damper
DE102010024721A1 (en) * 2010-06-23 2012-03-29 Mahle International Gmbh Cam and associated camshaft
CN102686911B (en) * 2010-12-28 2015-03-11 丰田自动车株式会社 Dual camshaft structure and method for assembling dual camshaft structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016206674A1 (en) 2016-04-20 2017-10-26 Mahle International Gmbh Method for gripping and holding an adjustable camshaft
DE102016206672A1 (en) 2016-04-20 2017-10-26 Mahle International Gmbh Method for gripping and holding an adjustable camshaft

Also Published As

Publication number Publication date
US20140245980A1 (en) 2014-09-04
CN103987927B (en) 2016-10-26
CN103987927A (en) 2014-08-13
US9200544B2 (en) 2015-12-01
DE102011054350A1 (en) 2013-04-11
EP2766581A1 (en) 2014-08-20
WO2013053669A1 (en) 2013-04-18

Similar Documents

Publication Publication Date Title
EP2766581B1 (en) Camshaft and functional elements for a camshaft
EP0254058B1 (en) Camshaft for controlling the gas inlet and exhaust valves of an internal-combustion engine
EP2494219B1 (en) Connecting arrangement of a camshaft phaser
DE19645726A1 (en) Vehicle steering
EP2744986B1 (en) Adjustable camshaft arrangement
DE10161701A1 (en) Control time altering device has sheet component with friction-enhancing coating between camshaft-facing endface of driven unit and endface of camshaft
DE102004051424B4 (en) Device for adjusting the camshaft of an internal combustion engine and assembly tool
DE10141457A1 (en) Adjustment arrangement for axial play and preload on bearings
EP3199769B1 (en) Camshaft adjustment tool
WO2018095475A1 (en) Actuating gear mechanism
EP2340361B1 (en) Arrangement for mounting and attaching a planetary gear to a camshaft and method for mounting the planetary gear
DE102006019743B4 (en) Powered tool and method for moving elements relative to an object
DE102014209312B4 (en) Camshaft adjusting arrangement, comprising an axial securing means by means of a clamping sleeve
DE102009038662B4 (en) Valve train of an internal combustion engine
EP3322641B1 (en) Control bar for adjusting a rotor blade of a helicopter
DE102005011441B4 (en) Camshaft adjuster for internal combustion engines
DE102018131572A1 (en) Arrangement for fastening an electric camshaft adjuster for variable valve control of an internal combustion engine on a camshaft
DE102008058384A1 (en) Toothed wheel arrangement for internal combustion engine, particularly for cam shaft of internal combustion engine, has two toothed wheels which are coaxially arranged to each other and are rotated around central axis
DE10013877A1 (en) Valve timing altering device for internal combustion engine has pressure adapter with expanded connecting flange on end facing away from camshaft
WO2014029515A1 (en) Fixing arrangement for connecting a camshaft adjuster to a camshaft end of a camshaft
DE19709656A1 (en) Device for adjustment of basic position of camshaft adjustment accessory on internal combustion engine
EP2597283B1 (en) Variable turbine geometry
EP3379042B1 (en) Camshaft device and camshaft adjuster for a camshaft device
EP2194242A1 (en) Device for phase shifting the rotation angle of a drive wheel relative to a driven shaft
DE10154069A1 (en) Spur gear camshaft drive for an internal combustion engine comprises a gear wheel having an axis of rotation connected with an arm end via an eccentric to a cylinder head

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20140317

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DAX Request for extension of the european patent (deleted)
GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

INTG Intention to grant announced

Effective date: 20150409

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: AT

Ref legal event code: REF

Ref document number: 748307

Country of ref document: AT

Kind code of ref document: T

Effective date: 20150915

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502012004506

Country of ref document: DE

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 4

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20150909

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151209

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20151210

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160109

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20160111

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502012004506

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151031

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151031

26N No opposition filed

Effective date: 20160610

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 5

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151008

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO

Effective date: 20121008

Ref country code: SM

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151031

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 6

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151008

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

REG Reference to a national code

Ref country code: FR

Ref legal event code: PLFP

Year of fee payment: 7

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

Ref country code: AL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20150909

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 748307

Country of ref document: AT

Kind code of ref document: T

Effective date: 20171008

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20171008

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SK

Payment date: 20181018

Year of fee payment: 15

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191009

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20191008

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230530

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20231020

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20231025

Year of fee payment: 12

Ref country code: DE

Payment date: 20231020

Year of fee payment: 12