DE102008032028B4 - Camshaft adjuster for an internal combustion engine of a motor vehicle - Google Patents
Camshaft adjuster for an internal combustion engine of a motor vehicle Download PDFInfo
- Publication number
- DE102008032028B4 DE102008032028B4 DE102008032028.5A DE102008032028A DE102008032028B4 DE 102008032028 B4 DE102008032028 B4 DE 102008032028B4 DE 102008032028 A DE102008032028 A DE 102008032028A DE 102008032028 B4 DE102008032028 B4 DE 102008032028B4
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- Prior art keywords
- locking
- rotor
- stator
- pressure medium
- locking device
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- 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
- F01L1/34—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
- F01L2001/34463—Locking position intermediate between most retarded and most advanced 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
- 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
- F01L2001/34466—Locking means between driving and driven members with multiple locking devices
-
- 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
- F01L2001/34469—Lock movement parallel to camshaft axis
-
- 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
- F01L2001/34476—Restrict range locking means
-
- 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
-
- 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
- F01L2800/01—Starting
-
- 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
- F01L2800/03—Stopping; Stalling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Nockenwellenversteller für eine Brennkraftmaschine eines Kraftfahrzeuges mit- einem von einer Kurbelwelle antreibbaren ringförmigen einen Hohlraum aufweisenden Stator (16),- einem mit der Nockenwelle (17) drehfest verbundenen in dem Hohlraum angeordneten Rotor (1),- mehreren von dem Stator (16) radial nach innen ragenden und sich auf dem Rotor (1) abstützten Vorsprüngen (19), die den Hohlraum zwischen dem Stator (16) und dem Rotor (1) in mehrere Arbeitskammern unterteilen,- an dem Rotor (1) angeordneten die Arbeitskammern in zwei entgegengesetzt wirkende Druckräume (3, 4) unterteilenden Flügeln (2),- einem drehfest mit dem Stator (16) verbundenen Verriegelungsdeckel (9),- einer in dem Rotor (1) angeordneten, in einer an dem Verriegelungsdeckel (9) angeordneten Verriegelungskulisse (7, 8) verriegelbaren Verriegelungseinrichtung, gebildet aus einem in Verriegelungsrichtung federbelasteten und in Entriegelungsrichtung druckbeaufschlagbaren Kolben,- wobei die relative Drehlage zwischen dem Rotor (1) und dem Stator (16) durch Druckbeaufschlagung der Druckräume (3, 4) veränderbar ist, und durch Verriegelung der Verriegelungseinrichtung in der Verriegelungskulisse (7, 8) festlegbar ist,- eine Druckmittelverbindung zwischen wenigstens einem der Druckräume (3, 4) und der Verriegelungseinrichtung vorgesehen ist,- und die Verriegelungseinrichtung durch die Druckmittelverbindung in Verriegelungsrichtung druckbeaufschlagbar ist, dadurch gekennzeichnet, dass,- wenigstens eine zweite Druckmittelverbindung vorgesehen ist, mittels derer die Verriegelungseinrichtung an ihrer in Verriegelungsrichtung druckbeaufschlagbaren Seite mit einem Druckmittelreservoir verbindbar ist.Camshaft adjuster for an internal combustion engine of a motor vehicle with - an annular stator (16) that can be driven by a crankshaft, - a rotor (1) connected in a rotationally fixed manner to the camshaft (17) in the cavity, - several of the stator (16) radially inwardly protruding and on the rotor (1) supported projections (19), which divide the cavity between the stator (16) and the rotor (1) into several working chambers, - on the rotor (1) arranged the working chambers in two opposite Acting pressure chambers (3, 4) dividing wings (2), - a locking cover (9) non-rotatably connected to the stator (16), - a locking link (7) arranged in the rotor (1) in a locking link (7) arranged on the locking cover (9) , 8) lockable locking device, formed from a piston spring-loaded in the locking direction and pressurizable in the unlocking direction, - the relative rotational position between the The rotor (1) and the stator (16) can be changed by applying pressure to the pressure spaces (3, 4) and can be fixed by locking the locking device in the locking link (7, 8), - a pressure medium connection between at least one of the pressure spaces (3, 4) ) and the locking device is provided, and the locking device can be pressurized by the pressure medium connection in the locking direction, characterized in that at least one second pressure medium connection is provided, by means of which the locking device can be connected to a pressure medium reservoir on its side that can be pressurized in the locking direction.
Description
Gebiet der ErfindungField of invention
Die Erfindung betrifft einen Nockenwellenversteller für eine Brennkraftmaschine eines Kraftfahrzeuges.The invention relates to a camshaft adjuster for an internal combustion engine of a motor vehicle.
Aus der
Für den Fall, dass der Nockenwellenversteller im kalten Zustand der Brennkraftmaschine entriegelt wurde und mit einer verstellten relativen Drehlage plötzlich abgestellt wird, besteht die Gefahr, dass der Rotor in dieser relativen Drehlage gegenüber dem Stator stehen bleibt und nicht in der Mittenstellung verriegelt. Beim Anlassen der Brennkraftmaschine ist die Temperatur des Druckmittels kalt und damit dessen Viskosität hoch. Dadurch besteht die Gefahr, dass die Verriegelungseinrichtung dann beim Starten der Brennkraftmaschine auch beim Überfahren der Verriegelungskulisse nicht verriegelt, da das in der Verriegelungskulisse befindliche Druckmittel wegen der hohen Viskosität nicht schnell genug in den Tank abfließt und dadurch die Verriegelung behindert. Die fehlende Verriegelung des Nockenwellenverstellers hat zur Folge, dass die Brennkraftmaschine mit einem schlechten Wirkungsgrad betrieben wird und die Emissionen verhältnismäßig hoch sind. Ferner besteht die Gefahr, dass die Brennkraftmaschine bei einer entsprechenden Auslegung der Brennkraftmaschine nicht startbar ist.In the event that the camshaft adjuster has been unlocked when the internal combustion engine is cold and is suddenly switched off with an adjusted relative rotational position, there is a risk that the rotor will stop in this relative rotational position with respect to the stator and not be locked in the central position. When the internal combustion engine is started, the temperature of the pressure medium is cold and therefore its viscosity is high. As a result, there is a risk that the locking device will not lock when the internal combustion engine is started, even when the locking link is driven over, since the pressure medium in the locking link does not flow quickly enough into the tank due to the high viscosity and thus hinders the locking. The lack of locking of the camshaft adjuster has the consequence that the internal combustion engine is operated with poor efficiency and the emissions are relatively high. Furthermore, there is the risk that the internal combustion engine cannot be started if the internal combustion engine is designed accordingly.
Die JP 2003 – 20 916 A zeigt eine Ventilsteuerung, die die Öffnungs- / Schließzeit eines Einlassventils oder eines Auslassventils, das eine Brennkammer eines Verbrennungsmotors öffnet / schließt, variabel steuert und eine Steuervorrichtung, insbesondere eine Ventilsteuerungs-Steuervorrichtung mit einem Sicherungsstift, der einen relativ drehbaren Gehäuserotor und einen Flügelrotor verriegelt.JP 2003-20 916 A shows a valve control that variably controls the opening / closing time of an intake valve or an exhaust valve that opens / closes a combustion chamber of an internal combustion engine, and a control device, in particular a valve control control device with a locking pin, the one relative rotatable housing rotor and a vane rotor locked.
Die
Aufgabe der Erfindung ist es, einen Nockenwellenversteller zur Überwindung der oben genannten Nachteile zu schaffen.The object of the invention is to create a camshaft adjuster to overcome the disadvantages mentioned above.
Zur Lösung der Aufgabe wird erfindungsgemäß nach Anspruch 1 vorgeschlagen, dass eine Druckmittelverbindung zwischen den Druckräumen und der Verriegelungseinrichtung vorgesehen ist, und die Verriegelungseinrichtung durch die Druckmittelverbindung in Verriegelungsrichtung druckbeaufschlagbar ist. Hierdurch wird eine Möglichkeit geschaffen, die Verriegelungseinrichtung zusätzlich zu der Federbelastung mit einem Druckmittel in Verriegelungsrichtung zu belasten, so dass die in Verriegelungsrichtung wirkende Kraft entsprechend erhöht werden kann, und die Verriegelung beim Abstellen der Brennkraftmaschine aktiv herbeigeführt werden kann. Damit befindet sich der Nockenwellenversteller der Brennkraftmaschine beim Neustart sicher in der verriegelten Position, bzw. kann auch bei nicht verriegeltem Nockenwellenversteller trotz des kalten hochviskosen Druckmittels beim Neustart der Brennkraftmaschine in der Verriegelungskulisse sicher verriegelt werden. Im Allgemeinen sei hier angemerkt, dass unter Verriegelung im Sinne der Erfindung keine ausschließlich starre Verbindung zwischen Rotor und Stator in Umfangsrichtung zu verstehen ist, sondern lediglich das Eingreifen der Verriegelungseinrichtung in die Verriegelungskulisse. Sofern die Verriegelungskulisse durch ihre Formgebung eine begrenzte Drehwinkeländerung zulässt soll dieser Zustand trotz der Drehbeweglichkeit hier auch als verriegelt angesehen werden.To achieve the object, the invention proposes that a pressure medium connection is provided between the pressure chambers and the locking device, and the locking device can be pressurized in the locking direction by the pressure medium connection. This creates the possibility of loading the locking device with a pressure medium in the locking direction in addition to the spring loading so that the force acting in the locking direction can be increased accordingly and the locking can be actively brought about when the internal combustion engine is switched off. The camshaft adjuster of the internal combustion engine is thus safely in the locked position when the engine is restarted, or can be safely locked in the locking link when the internal combustion engine is restarted, even if the camshaft adjuster is not locked, despite the cold, highly viscous pressure medium. In general, it should be noted here that locking in the sense of the invention is not to be understood as an exclusively rigid connection between the rotor and stator in the circumferential direction, but merely the engagement of the locking device in the locking link. Insofar as the shape of the locking link permits a limited change in the angle of rotation, this state should also be viewed as locked despite the rotational mobility.
Es wird weiter erfindungsgemäß vorgeschlagen, dass wenigstens eine zweite Druckmittelverbindung vorgesehen ist, mittels derer die Verriegelungseinrichtung an ihrer in Verriegelungsrichtung druckbeaufschlagbaren Seite mit einem Druckmittelreservoir verbindbar ist. Dadurch kann das Druckmittel nach der Druckbeaufschlagung der Verriegelungseinrichtung in das Reservoir abfließen, und kann dadurch eine mögliche nachfolgende Entriegelung nicht stören.It is further proposed according to the invention that at least one second pressure medium connection is provided, by means of which the locking device can be connected to a pressure medium reservoir on its side that can be pressurized in the locking direction. As a result, the pressure medium can flow off into the reservoir after the locking device has been pressurized, and thus cannot interfere with a possible subsequent unlocking.
Ein besonders einfacher Aufbau ergibt sich dadurch, dass der Verriegelungsdeckel an einer ersten Seite des Rotors angeordnet ist, und die Druckmittelverbindung in einem drehfest mit dem Stator verbundenen an einer zweiten Seite des Rotors angeordneten Dichtdeckel angeordnet ist, und der Verriegelungsdeckel und der Dichtdeckel den Rotor zwischen sich einschließen. Somit werden für die Ver- und Entriegelung gegenüberliegende Deckel verwendet, so dass der Rotor selbst nicht verändert werden muss, und die Deckel neben der Bildung der Führungskanäle für das Druckmittel gleichzeitig die Aufgabe haben, die Reaktionskräfte während des Ver- und Entriegelns gegenseitig aufzunehmen.A particularly simple structure results from the fact that the locking cover is arranged on a first side of the rotor, and the pressure medium connection is arranged in a sealing cover connected to the stator in a rotationally fixed manner on a second side of the rotor, and the locking cover and the sealing cover between the rotor to lock myself in. Opposing covers are thus used for locking and unlocking, so that the rotor itself does not have to be changed, and the covers, in addition to forming the guide channels for the pressure medium, simultaneously have the task of mutually absorbing the reaction forces during locking and unlocking.
Es wird weiter vorgeschlagen, dass die Verriegelungseinrichtung in Abhängigkeit von der relativen Drehlage des Rotors zu dem Stator druckmittelbeaufschlagbar ist. Hierdurch wird der Vorteil erreicht, dass die Druckmittelverbindung und damit die Verriegelung der Verriegelungseinrichtung grundsätzlich nur in bestimmten Winkeln der relativen Drehlage des Rotors zu dem Stator herbeigeführt wird, so dass in bestimmten Drehlagen, in denen eine Entriegelung der Verriegelungseinrichtung erfolgen soll, diese nicht gegen die Druckbeaufschlagung in Verriegelungsrichtung vorgenommen werden muss. Die Verriegelung der Verriegelungseinrichtung kann in diesem Fall weiter erleichtert werden, indem die der Verriegelungseinrichtung gegenüberliegende Verriegelungskulisse eine Druckmittelverbindung zu einem Druckmittelreservoir aufweist. Das Druckmittel kann dann durch die Verriegelungseinrichtung in das Druckmittelreservoir, welches einen geringeren Druck, insbesondere Umgebungsdruck, aufweist, ohne die Erzeugung einer Gegenkraft verdrängt werden. Insbesondere wird durch den geringeren Druck des Druckmittels in dem Druckmittelreservoir die an dem Kolben anliegende und die Verriegelung bewirkende treibende Druckdifferenz erhöht.It is further proposed that the locking device can be acted upon by pressure medium as a function of the rotational position of the rotor relative to the stator. This has the advantage that the pressure medium connection and thus the locking of the locking device is basically only brought about at certain angles of the relative rotational position of the rotor to the stator, so that in certain rotational positions in which the locking device is to be unlocked, this does not counteract the Pressurization must be carried out in the locking direction. In this case, the locking of the locking device can be further facilitated by the locking link opposite the locking device having a pressure medium connection to a pressure medium reservoir. The pressure medium can then be displaced by the locking device into the pressure medium reservoir, which has a lower pressure, in particular ambient pressure, without generating a counterforce. In particular, the lower pressure of the pressure medium in the pressure medium reservoir increases the driving pressure difference applied to the piston and causing the locking.
Ferner wird vorgeschlagen, dass die Verriegelungseinrichtung durch wenigstens zwei Feststelleinrichtungen gebildet ist, und die Druckmittelverbindung zu wenigstens einer Feststelleinrichtung durch Veränderung der relativen Drehlage von dem Rotor zu dem Stator in einer ersten Richtung herstellbar ist, und die Druckmittelverbindung zu wenigstens einer weiteren Feststelleinrichtung durch Veränderung der relativen Drehlage von dem Rotor zu dem Stator in eine zu der ersten Richtung entgegen gesetzten Richtung herstellbar ist. Die vorgeschlagene Verriegelungseinrichtung bietet den Vorteil, dass sie eine Verriegelung des Nockenwellenverstellers sowohl aus der Verstellrichtung „Früh“ als auch aus der Verstellrichtung „Spät“ des Rotors zu dem Stator ermöglicht.It is also proposed that the locking device is formed by at least two locking devices, and the pressure medium connection to at least one locking device can be established by changing the relative rotational position of the rotor to the stator in a first direction, and the pressure medium connection to at least one further locking device by changing the relative rotational position of the rotor to the stator can be produced in a direction opposite to the first direction. The proposed locking device offers the advantage that it enables the camshaft adjuster to be locked both from the “advance” adjustment direction and from the “late” adjustment direction of the rotor to the stator.
Ferner wird vorgeschlagen, dass die Verriegelungseinrichtung wenigstens zwei Feststelleinrichtungen aufweist, und die Verriegelungskulissen derart an dem Verriegelungsdeckel ausgeformt sind, dass eine vorgegebene Mittenverriegelungsposition definiert ist, in der wenigstens zwei Feststelleinrichtungen in den Verriegelungskulissen gleichzeitig verriegelbar sind und den Rotor und den Stator drehfest verbinden. Eine Verstellung des Rotors in eine Drehrichtung kann dann dadurch bewirkt werden, indem nur eine Feststelleinrichtung entriegelt wird, und die jeweils andere Feststelleinrichtung in der verriegelten Position bleibt, sofern die Verriegelungskulisse in welche die verriegelte Feststelleinrichtung eingreift eine Verdrehung zulässt. Dadurch kann zusätzlich aufgrund der Verriegelungszustände der beiden Feststelleinrichtungen auf die Verdrehrichtung des Rotors gegenüber dem Stator geschlossen werden und beim Start der Brennkraftmaschine eine bestimmte Strategie eingeleitet werden, durch die der Nockenwellenversteller wieder in die Mittenverriegelungsposition gebracht wird. Die noch verriegelte Feststelleinrichtung kann dann nach dem Entriegeln der anderen Feststelleinrichtung und beim Zurückdrehen des Rotors in Richtung Mittenverriegelungsposition als Anschlag genutzt werden, so dass die Mittenverriegelungsposition nicht überfahren wird.It is also proposed that the locking device have at least two locking devices, and the locking links are formed on the locking cover in such a way that a predetermined central locking position is defined in which at least two locking devices can be locked in the locking links at the same time and connect the rotor and the stator in a rotationally fixed manner. An adjustment of the rotor in one direction of rotation can then be effected by only unlocking one locking device and the other locking device remaining in the locked position, provided that the locking link in which the locked locking device engages allows rotation. As a result, based on the locking states of the two locking devices, the direction of rotation of the rotor relative to the stator can also be deduced and a certain strategy can be initiated when the internal combustion engine is started, by means of which the camshaft adjuster is brought back into the central locking position. The still locked locking device can then be used as a stop after the other locking device is unlocked and when the rotor is turned back towards the central locking position, so that the central locking position is not exceeded.
Nachfolgend wird die Erfindung anhand eines bevorzugten Ausführungsbeispieles näher erläutert, wobei in den Figuren im Einzelnen zu erkennen ist:
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1 Nockenwellenversteller in Schnittdarstellung; -
2 Nockenwellenversteller von der Stirnseite ohne Dichtdeckel; -
3 Nockenwellenversteller in Abwicklung mit Rotor in relativer Drehlage zu dem Stator in Mittenverriegelungsposition (MVP); -
4 Nockenwellenversteller in Abwicklung mit Rotor in relativer Drehlage zu dem Stator zwischen MVP und Grenzwinkel „Spät“; -
5 Nockenwellenversteller in Abwicklung mit Rotor in relativer Drehlage zu dem Stator größer als der Grenzwinkel „Spät“.
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1 Camshaft adjuster in sectional view; -
2 Camshaft adjuster from the front without sealing cover; -
3 Camshaft adjuster in development with rotor in relative rotational position to the stator in central locking position (MVP); -
4th Camshaft adjuster in development with rotor in relative rotational position to the stator between MVP and critical angle “late”; -
5 Camshaft adjuster developed with the rotor in the relative rotational position to the stator greater than the "late" limit angle.
In den
In der
In der
Aufgrund der erfindungsgemäß unterstützten Verriegelung der Feststelleinrichtung
Wird eine Stellung der relativen Drehlage des Rotors
Zur Einleitung der oben beschriebenen Strategien zur Rückführung des Rotors
Claims (6)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008032028.5A DE102008032028B4 (en) | 2008-07-07 | 2008-07-07 | Camshaft adjuster for an internal combustion engine of a motor vehicle |
PCT/EP2009/056961 WO2010003744A1 (en) | 2008-07-07 | 2009-06-05 | Camshaft adjuster for an internal combustion engine of a motor vehicle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008032028.5A DE102008032028B4 (en) | 2008-07-07 | 2008-07-07 | Camshaft adjuster for an internal combustion engine of a motor vehicle |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102008032028A1 DE102008032028A1 (en) | 2010-01-14 |
DE102008032028B4 true DE102008032028B4 (en) | 2021-02-11 |
Family
ID=40983462
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102008032028.5A Expired - Fee Related DE102008032028B4 (en) | 2008-07-07 | 2008-07-07 | Camshaft adjuster for an internal combustion engine of a motor vehicle |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102008032028B4 (en) |
WO (1) | WO2010003744A1 (en) |
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JP5739305B2 (en) * | 2011-10-26 | 2015-06-24 | 日立オートモティブシステムズ株式会社 | Valve timing control device for internal combustion engine |
DE102012218405B4 (en) * | 2012-10-10 | 2014-08-21 | Schaeffler Technologies Gmbh & Co. Kg | Camshaft adjuster with rolled connection |
DE112015002518B4 (en) * | 2014-06-25 | 2017-11-16 | Borgwarner Inc. | Camshaft adjuster systems and associated adjuster with lock |
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JP2000145414A (en) * | 1998-11-13 | 2000-05-26 | Unisia Jecs Corp | Valve timing control system for internal combustion engine |
DE10162553A1 (en) * | 2000-12-25 | 2002-08-14 | Mitsubishi Electric Corp | Valve timing controller for internal combustion engine, has advance side and retardation side hydraulic chambers provided for causing locking or unlocking of rotors provided with purge path communicating with atmosphere |
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DE102004024830A1 (en) * | 2003-05-21 | 2005-02-17 | Mitsubishi Denki K.K. | Valve timing control |
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US20070056538A1 (en) * | 2005-09-13 | 2007-03-15 | Borgwarner Inc. | Electronic lock for VCT phaser |
DE102008021270A1 (en) * | 2008-04-29 | 2009-11-05 | GM Global Technology Operations, Inc., Detroit | Camshaft adjuster for adjusting camshaft relative to crankshaft of vehicle, comprises rotor for connecting with camshaft and stator for connecting with crankshaft, where pressure chamber is formed between rotor and stator |
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US5836277A (en) * | 1996-12-24 | 1998-11-17 | Aisin Seiki Kabushiki Kaisha | Valve timing control device |
US6460496B2 (en) * | 2000-12-25 | 2002-10-08 | Mitsubishi Denki Kabushiki Kaisha | Valve timing control device |
US6439184B1 (en) * | 2001-01-31 | 2002-08-27 | Denso Corporation | Valve timing adjusting system of internal combustion engine |
JP4000522B2 (en) * | 2003-02-26 | 2007-10-31 | アイシン精機株式会社 | Valve timing control device |
JP4177297B2 (en) * | 2004-06-25 | 2008-11-05 | 株式会社日立製作所 | Valve timing control device for internal combustion engine |
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2008
- 2008-07-07 DE DE102008032028.5A patent/DE102008032028B4/en not_active Expired - Fee Related
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2009
- 2009-06-05 WO PCT/EP2009/056961 patent/WO2010003744A1/en active Application Filing
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JP2000145414A (en) * | 1998-11-13 | 2000-05-26 | Unisia Jecs Corp | Valve timing control system for internal combustion engine |
DE10162553A1 (en) * | 2000-12-25 | 2002-08-14 | Mitsubishi Electric Corp | Valve timing controller for internal combustion engine, has advance side and retardation side hydraulic chambers provided for causing locking or unlocking of rotors provided with purge path communicating with atmosphere |
JP2003020916A (en) * | 2001-07-03 | 2003-01-24 | Mikuni Corp | Valve timing control device |
DE102004024830A1 (en) * | 2003-05-21 | 2005-02-17 | Mitsubishi Denki K.K. | Valve timing control |
JP2005016445A (en) * | 2003-06-26 | 2005-01-20 | Toyota Motor Corp | Valve timing control device of internal combustion engine |
DE202005008264U1 (en) * | 2005-05-23 | 2005-08-25 | Ina-Schaeffler Kg | Device for variable adjustment of gas exchange valve timing in IC engines has housing projecting into radial profile of on outer stator jacket surface for positive connection |
US20070056538A1 (en) * | 2005-09-13 | 2007-03-15 | Borgwarner Inc. | Electronic lock for VCT phaser |
DE102008021270A1 (en) * | 2008-04-29 | 2009-11-05 | GM Global Technology Operations, Inc., Detroit | Camshaft adjuster for adjusting camshaft relative to crankshaft of vehicle, comprises rotor for connecting with camshaft and stator for connecting with crankshaft, where pressure chamber is formed between rotor and stator |
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WO2010003744A1 (en) | 2010-01-14 |
DE102008032028A1 (en) | 2010-01-14 |
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