WO2007033737A1 - Camshaft adjusting device - Google Patents

Camshaft adjusting device Download PDF

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Publication number
WO2007033737A1
WO2007033737A1 PCT/EP2006/008188 EP2006008188W WO2007033737A1 WO 2007033737 A1 WO2007033737 A1 WO 2007033737A1 EP 2006008188 W EP2006008188 W EP 2006008188W WO 2007033737 A1 WO2007033737 A1 WO 2007033737A1
Authority
WO
WIPO (PCT)
Prior art keywords
locking
adjusting device
camshaft
camshaft adjusting
spring element
Prior art date
Application number
PCT/EP2006/008188
Other languages
German (de)
French (fr)
Inventor
Jens Meintschel
Thomas Stolk
Alexander Von Gaisberg-Helfenberg
Original Assignee
Daimlerchrysler 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 Daimlerchrysler Ag filed Critical Daimlerchrysler Ag
Publication of WO2007033737A1 publication Critical patent/WO2007033737A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/02—Valve drive
    • F01L1/022—Chain drive
    • 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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • 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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0063—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of cam contact point by displacing an intermediate lever or wedge-shaped intermediate element, e.g. Tourtelot
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F01L2001/3445—Details relating to the hydraulic means for changing the angular relationship
    • F01L2001/34453—Locking means between driving and driven members
    • F01L2001/34459—Locking in multiple positions
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • 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

Definitions

  • the invention relates to a camshaft adjusting device according to the preamble of patent claim 1.
  • the invention is in particular the object of providing a generic camshaft adjusting device with improved operating characteristics.
  • the object is solved by the features of patent claim 1, wherein further embodiments of the invention can be taken from the subclaims.
  • the invention is based on a camshaft adjusting device with a locking unit which has at least one first locking position associated with a first mode.
  • the locking unit has at least one second locking position assigned to a second mode.
  • the various locking positions can be advantageously adapted to the different modes, and improved operating parameters, such as start times, consumption values, exhaust gas values, etc., can be achieved.
  • At least one locking position is assigned to at least one start mode, so that advantageous operating parameters can be achieved, especially in an operating phase in which, in particular, there is still insufficient oil pressure for the hydraulic control of a camshaft phase angle.
  • a start operating phase in which all cylinders of an internal combustion engine are ignited for the first time be provided a first locking position in which an optimal, in particular maximum filling of the cylinder can be realized, resulting in very short start times and an advantageous starting behavior at low Temperatures can be reached.
  • one or more further locking positions can be provided, in which advantageous consumption values and / or exhaust gas values can be achieved.
  • At least one locking position can be assigned, which differs from an emergency mode associated locking position, so that in the emergency mode associated locking position in particular an operation over an entire speed range of the internal combustion engine and in the start mode associated locking position achieves an advantageous start of the internal combustion engine can be.
  • the locking unit is provided to passively activate at least one of the locking positions, in particular a locking position associated with a limp home mode.
  • the term "provided” should always be understood to mean in particular specially equipped, designed and / or possibly programmed, and in particular under a “passive activation”. were that an adjustment in the locked position is made possible in particular when the internal combustion engine and / or when power supply is interrupted, in particular by an energy storage.
  • the energy storage can be formed by various, the skilled person appear appropriate units, such as from a pressure accumulator and / or particularly advantageous of a spring element that can be integrated particularly cost-effective and space-saving.
  • the locking unit has at least one at least double-acting locking means, whereby additional components, space, weight, assembly costs and costs can be saved.
  • at least double acting is to be understood in particular that the locking means can be used at least for the realization of two locking positions, in particular by this can be moved in at least two different directions to achieve the locking positions.
  • the camshaft adjusting device has at least one electric actuator which is provided for actuating at least one locking means of the locking unit, an actuation of the locking means can advantageously be realized completely independently of an existing oil pressure.
  • both electromagnetic and electromotive actuators should be understood by an electric actuator.
  • the camshaft adjusting device has at least one coupling element formed by a spring element, which is provided for coupling the actuator with a locking means, so that at least one due to an elastic deformation of the spring element, advantageous movement decoupling between the actuator and the Realizes locking means and / or the spring element can also be used as energy storage.
  • the camshaft adjusting device has at least one decoupling means which is provided for decoupling the actuator from the locking means, the actuator can be energetically advantageous for another function independently of the locking means in at least one operating mode, in particular for a control and / or regulating function of the camshaft phase angle. be used.
  • the locking unit comprises a spring element formed by a disc spring, which is provided for loading at least one locking means.
  • a corresponding spring element can be integrated to save space and / or can advantageously be used as coupling means and / or advantageously for loading a plurality of locking means.
  • the camshaft adjusting device has at least one spring element which is provided to move at least one locking means with its spring force from at least one locking position into a release position, an advantageous, at least partially automatic unlocking can be achieved, in particular structurally simple can be a cancellation of a start mode assigned Arrested position can be achieved.
  • FIG. 1 shows a schematic longitudinal section through a camshaft adjusting device with the internal combustion engine switched off or an emergency mode
  • FIG. 3 the camshaft adjusting device of Figure 1 in a control mode.
  • Figure 1 shows a camshaft adjusting device with a rotor housing 17 which is rotatably connected via fastening means not shown in detail with a sprocket 18 and a cover 19.
  • the sprocket 18 When installed, the sprocket 18 is drivingly connected via a drive chain not shown in detail with a crankshaft.
  • a stator housing 20 divided into two in the axial direction is arranged, relative to which the rotor housing 17 can be driven hydraulically in the circumferential direction for setting a camshaft phase angle.
  • the stator housing 20 is rotatably connected to a camshaft 21, on which the sprocket 18 is rotatably mounted with its inner circumference.
  • the camshaft adjusting device has a locking unit 10 which has a first locking position 11 assigned to a first mode, specifically an emergency mode, and a second locking position 12 assigned to a second mode, specifically a start mode, (FIGS 2).
  • the locking unit 10 has a double-acting locking means 13 formed by a bolt, which is provided both for achieving the first locking position 11 and for achieving the second locking position 12.
  • the locking means 13 is slidably mounted in the axial direction within the stator housing 20 and can both with a first, the sprocket 18 facing the end with an integrally formed on the sprocket 18 Arretierkontur 22 and with a second, the lid 19 end facing with a to the lid 19 molded locking contour 23 are brought into engagement.
  • the locking means 13 is coupled to a radially outer end of a coupling element formed by a spring element 15, namely the spring element 15 engages positively in a recess 31 of the locking means 13.
  • the spring element 15 formed by a plate spring is between a first part 26 and a second part 27 of the stator housing 20 and is pivotally mounted in the radially central region about an integrally formed on the second part 27 of the stator housing 20, axially in the direction of the first part 26 facing extension 28. With a radially inner end, the spring element 15 protrudes into an elongated hole 16 of the control valve 24 formed by an annular groove.
  • the camshaft actuating device For actuation of the control valve 24, the camshaft actuating device has an electromagnetic actuator 14 which has an actuator tappet 25 with an end of the control valve 24 remote from the camshaft 21 is coupled.
  • a spring element 29 formed by a helical compression spring, which is supported with a first end to the camshaft 21 and with a second end with a spring force on the control valve 24th acts in the axial direction to the electromagnetic actuator 14.
  • the electromagnetic actuator 14 is de-energized and the control valve 24 is displaced by the spring force of the spring element 29 formed by the helical compression spring in its camshaft 21 facing away from the end position ( Figure 1).
  • the spring element 15 formed by the plate spring is located in the region of its control valve 24 facing radially inner end with a camshaft 21 facing side on one of the camshaft 21 facing edge of the slot 16 of the control valve 24 and with a camshaft 21 side facing away from the first Part 26 of the stator 20 at.
  • the locking means 13 is in its first locking position 11. In the first locking position 11, the sprocket 18 and the camshaft 21 are fixed to each other in a rotational position in which operation over an entire speed range of the internal combustion engine and also starting the internal combustion engine are possible.
  • the control valve 24 by means of the electromagnetic actuator 14 or by means of the actuator ram 25 in its the camshaft 21 facing End position shifted ( Figure 2).
  • the spring element 15 formed by the disc spring comes with its radially inner end with a the electromagnetic actuator 14 facing edge of the slot 16 into engagement and is moved by the control valve 24, driven by the electromagnetic actuator 14 in the axial direction to the camshaft 21.
  • the radially outer end of the spring element 15 pivots in the direction of the locking contour 23 formed on the cover 19, takes the locking means 13 in the direction of the cover 19 and loads the locking means 13 with a spring force in the direction of the cover 19.
  • the stator housing 20 By means of camshaft alternating moments the stator housing 20 rotatably coupled to the camshaft 21 - and thus the locking means 13 - in the circumferential direction relative to the cover 19 to swing, so that the locking means 13 engage in the locking contour 23 formed on the cover 19 and occupy its second locking position 12 can.
  • the sprocket 18 and the camshaft 21 are fixed to each other in a different from the first rotational position second rotational position in which when starting the internal combustion engine, a maximum filling of cylinders of the internal combustion engine is made possible.
  • camshaft alternating torques it is also conceivable to use other forces and / or torques that appear appropriate to the person skilled in the art and / or to provide additional mechanisms in order to achieve a desired adjustment.
  • control valve 24 If the internal combustion engine is started and there is sufficient oil pressure for controlling the camshaft phase angle, the control valve 24 is guided into its control range, driven by the electromagnetic actuator 14, which lies between the end positions of the control valve 24 (FIG. 3). The load of the radially inner end of the spring element 15 formed by the plate spring by the control valve 24 in the direction of the camshaft 21 is released, so that the spring element 15 relaxes.
  • the control valve 24 For regulating an oil pressure in the pressure chambers between the rotor housing 17 and the stator housing 20 and thus for controlling the camshaft phase angle, the control valve 24 is moved in the axial direction, driven by the electromagnetic actuator 14, within the control range whose length is substantially determined by the axial Length of the slot 16 is defined.
  • the slot 16 thus serves as a decoupling means in the control mode for decoupling the control valve 24 and the electromagnetic actuator 14 from the locking means 13 and the electromagnetic actuator 14 serves as a Stellaktuator for setting a camshaft phase angle.
  • the first locking position 11 assigned to the emergency mode is activated passively.
  • the radially inner end of the Spring formed spring element 15 comes with the camshaft 21 facing edge of the slot 16 in abutment and is taken by the control valve 24 in the direction away from the camshaft 21 direction.

Abstract

The invention proceeds from a camshaft adjusting device having a locking unit (10) which has at least one first locking position (11) which is assigned to a first mode. It is proposed according to the invention that the locking unit (10) has, in addition to the first locking position (11) which is assigned to the first mode, at least one second locking position (12) which is assigned to a second mode.

Description

Nockenwellenstellvorrichtung Camshaft adjusting device
Die Erfindung betrifft eine Nockenwellenstellvorrichtung nach dem Oberbegriff des Patentanspruchs 1.The invention relates to a camshaft adjusting device according to the preamble of patent claim 1.
Aus der DE 100 06 349 C2 ist eine gattungsgemäße Nockenwellenstellvorrichtung mit einer Arretiereinheit bekannt, die eine einem Startmodus zugeordnete Arretierstellung aufweist.From DE 100 06 349 C2 a generic camshaft adjusting device with a locking unit is known, which has a start mode associated with a locking position.
Der Erfindung liegt insbesondere die Aufgabe zugrunde, eine gattungsgemäße Nockenwellenstellvorrichtung mit verbesserten Betriebskenngrößen bereitzustellen. Die Aufgabe wird gelöst durch die Merkmale des Patentanspruchs 1, wobei weitere Ausgestaltungen der Erfindung den Unteransprüchen entnommen werden können.The invention is in particular the object of providing a generic camshaft adjusting device with improved operating characteristics. The object is solved by the features of patent claim 1, wherein further embodiments of the invention can be taken from the subclaims.
Die Erfindung geht aus von einer Nockenwellenstellvorrichtung mit einer Arretiereinheit, die zumindest eine einem ersten Modus zugeordnete erste Arretierstellung aufweist.The invention is based on a camshaft adjusting device with a locking unit which has at least one first locking position associated with a first mode.
Es wird vorgeschlagen, dass die Arretiereinheit neben der dem ersten Modus zugeordneten ersten Arretierstellung zumindest eine einem zweiten Modus zugeordnete zweite Arretierstellung aufweist. Die verschiedenen Arretierstellungen können vorteilhaft auf die unterschiedlichen Modi angepasst werden, und es können verbesserte Betriebkenngrößen, wie Startzeiten, Verbrauchswerte, Abgaswerte usw., erzielt werden.It is proposed that, in addition to the first locking position assigned to the first mode, the locking unit has at least one second locking position assigned to a second mode. The various locking positions can be advantageously adapted to the different modes, and improved operating parameters, such as start times, consumption values, exhaust gas values, etc., can be achieved.
Besonders vorteilhaft ist zumindest eine Arretierstellung wenigstens einem Startmodus zugeordnet, so dass speziell in einer Betriebsphase, in der insbesondere noch kein ausreichender Öldruck zur hydraulischen Regelung eines Nockenwellenpha- senwinkels vorliegt, vorteilhafte Betriebskenngrößen erzielt werden können. Dabei kann vorteilhaft für eine Startbetriebsphase, in der sämtliche Zylinder einer Brennkraftmaschine das erste Mal gezündet werden, vorzugsweise eine erste Arretierstellung vorgesehen sein, in der eine optimale, insbesondere maximale Befüllung der Zylinder realisierbar ist, wodurch besonders kurze Startzeiten und auch ein vorteilhaftes Startverhalten bei niedrigen Temperaturen erreicht werden können. Für daran anschließende Startbetriebsphasen können eine oder mehrere weitere Arretierstellungen vorgesehen sein, in denen vorteilhafte Verbrauchswerte und/oder Abgaswerte erzielt werden können. Ferner kann insbesondere einem Startmodus zumindest eine Arretierstellung zugeordnet werden, die von einer einem Notlaufmodus zugeordneten Arretierstellung abweicht, so dass in der dem Notlaufmodus zugeordneten Arretierstellung insbesondere ein Betrieb über einen gesamten Drehzahlbereich der Brennkraftmaschine und in der dem Startmodus zugeordneten Arretierstellung ein vorteilhafter Start der Brennkraftmaschine erreicht werden kann.Particularly advantageously, at least one locking position is assigned to at least one start mode, so that advantageous operating parameters can be achieved, especially in an operating phase in which, in particular, there is still insufficient oil pressure for the hydraulic control of a camshaft phase angle. It can be advantageous for a start operating phase in which all cylinders of an internal combustion engine are ignited for the first time be provided a first locking position in which an optimal, in particular maximum filling of the cylinder can be realized, resulting in very short start times and an advantageous starting behavior at low Temperatures can be reached. For subsequent starting operating phases, one or more further locking positions can be provided, in which advantageous consumption values and / or exhaust gas values can be achieved. Furthermore, in particular a start mode, at least one locking position can be assigned, which differs from an emergency mode associated locking position, so that in the emergency mode associated locking position in particular an operation over an entire speed range of the internal combustion engine and in the start mode associated locking position achieves an advantageous start of the internal combustion engine can be.
In einer weiteren Ausgestaltung wird vorgeschlagen, dass die Arretiereinheit dazu vorgesehen ist, zumindest eine der Arretierstellungen, insbesondere eine einem Notlaufmodus zugeordnete Arretierstellung, passiv zu aktivieren. Unter „vorgesehen" soll stets insbesondere speziell ausgestattet, ausgelegt und/oder gegebenenfalls programmiert verstanden werden. Ferner soll insbesondere unter einer „passiven Aktivierung" ver- standen werden, dass eine Verstellung in die Arretierstellung insbesondere bei abgeschalteter Brennkraftmaschine und/oder bei unterbrochener Stromversorgung ermöglicht wird, wie insbesondere durch einen Energiespeicher. Der Energiespeicher kann dabei von verschiedenen, dem Fachmann als sinnvoll erscheinenden Einheiten gebildet sein, wie beispielsweise von einem Druckspeicher und/oder besonders vorteilhaft von einem Federelement, das besonders kostengünstig und Platz sparend integriert werden kann.In a further embodiment, it is proposed that the locking unit is provided to passively activate at least one of the locking positions, in particular a locking position associated with a limp home mode. The term "provided" should always be understood to mean in particular specially equipped, designed and / or possibly programmed, and in particular under a "passive activation". were that an adjustment in the locked position is made possible in particular when the internal combustion engine and / or when power supply is interrupted, in particular by an energy storage. The energy storage can be formed by various, the skilled person appear appropriate units, such as from a pressure accumulator and / or particularly advantageous of a spring element that can be integrated particularly cost-effective and space-saving.
Ferner wird vorgeschlagen, dass die Arretiereinheit wenigstens ein zumindest doppelwirkendes Arretiermittel aufweist, wodurch zusätzliche Bauteile, Bauraum, Gewicht, Montageaufwand und Kosten eingespart werden können. Unter „zumindest doppelwirkend" soll dabei insbesondere verstanden werden, dass das Arretiermittel zumindest zur Realisierung von zwei Arretierstellungen genutzt werden kann, und zwar insbesondere, indem dieses in zumindest zwei unterschiedliche Richtungen zur Erzielung der Arretierstellungen bewegt werden kann.It is also proposed that the locking unit has at least one at least double-acting locking means, whereby additional components, space, weight, assembly costs and costs can be saved. By "at least double acting" is to be understood in particular that the locking means can be used at least for the realization of two locking positions, in particular by this can be moved in at least two different directions to achieve the locking positions.
Weist die Nockenwellenstellvorrichtung zumindest einen elektrischen Aktuator auf, der zum Betätigen zumindest eines Arretiermittels der Arretiereinheit vorgesehen ist, kann eine Betätigung des Arretiermittels vorteilhaft vollständig unabhängig von einem vorliegenden Öldruck realisiert werden. Dabei sollen unter einem elektrischen Aktuator insbesondere sowohl elektromagnetische als auch elektromotorische Aktuatoren verstanden werden.If the camshaft adjusting device has at least one electric actuator which is provided for actuating at least one locking means of the locking unit, an actuation of the locking means can advantageously be realized completely independently of an existing oil pressure. In this case, in particular, both electromagnetic and electromotive actuators should be understood by an electric actuator.
Ist der elektrische Aktuator einstückig mit einem Stellaktua- tor zur Einstellung, insbesondere zur Regelung, eines Nocken- wellenphasenwinkels ausgeführt, können wiederum zusätzliche Bauteile, Bauraum, Gewicht, Montageaufwand und Kosten eingespart werden. In einer weiteren erfindungsgemäßen Ausgestaltung wird vorgeschlagen, dass die Nockenwellenstellvorrichtung wenigstens ein von einem Federelement gebildetes Koppelmittel aufweist, das zur Kopplung des Aktuators mit einem Arretiermittel vorgesehen ist, so dass zumindest eine durch eine elastische Verformung des Federelements bedingte, vorteilhafte Bewegungsentkopplung zwischen dem Aktuator und dem Arretiermittel realisiert und/oder das Federelement zusätzlich als Energiespeicher genutzt werden kann.If the electric actuator is designed in one piece with a setting actuator for setting, in particular for regulating, a camshaft phase angle, additional components, installation space, weight, assembly costs and costs can again be saved. In a further embodiment of the invention it is proposed that the camshaft adjusting device has at least one coupling element formed by a spring element, which is provided for coupling the actuator with a locking means, so that at least one due to an elastic deformation of the spring element, advantageous movement decoupling between the actuator and the Realizes locking means and / or the spring element can also be used as energy storage.
Weist die Nockenwellenstellvorrichtung wenigstens ein Entkopplungsmittel auf, das zur Entkopplung des Aktuators vom Arretiermittel vorgesehen ist, kann der Aktuator in zumindest einem Betriebsmodus unabhängig vom Arretiermittel energetisch vorteilhaft für eine andere Funktion, wie insbesondere für eine Steuer- und/oder Regelfunktion des Nockenwellenphasen- winkels, genutzt werden.If the camshaft adjusting device has at least one decoupling means which is provided for decoupling the actuator from the locking means, the actuator can be energetically advantageous for another function independently of the locking means in at least one operating mode, in particular for a control and / or regulating function of the camshaft phase angle. be used.
Ferner wird vorgeschlagen, dass die Arretiereinheit ein von einer Tellerfeder gebildetes Federelement aufweist, das zur Belastung wenigstens eines Arretiermittels vorgesehen ist. Ein entsprechendes Federelement kann Platz sparend integriert und/oder kann vorteilhaft als Koppelmittel und/oder vorteilhaft zur Belastung mehrerer Arretiermittel genutzt werden.It is also proposed that the locking unit comprises a spring element formed by a disc spring, which is provided for loading at least one locking means. A corresponding spring element can be integrated to save space and / or can advantageously be used as coupling means and / or advantageously for loading a plurality of locking means.
Weist die Nockenwellenstellvorrichtung wenigstens ein Federelement auf, das dazu vorgesehen ist, wenigstens ein Arretiermittel mit seiner Federkraft aus wenigstens einer Arretierstellung in eine Freigabestellung zu bewegen, kann eine vorteilhafte, zumindest teilweise selbsttätige Entriegelung erzielt werden, insbesondere kann konstruktiv einfach eine Aufhebung einer einem Startmodus zugeordneten Arretierstellung erreicht werden. Weitere Vorteile ergeben sich aus der folgenden Zeichnungsbeschreibung. In der Zeichnung ist ein Ausführungsbeispiel der Erfindung dargestellt. Die Beschreibung und die Ansprüche enthalten zahlreiche Merkmale in Kombination. Der Fachmann wird die Merkmale zweckmäßigerweise auch einzeln betrachten und zu sinnvollen weiteren Kombinationen zusammenfassen.If the camshaft adjusting device has at least one spring element which is provided to move at least one locking means with its spring force from at least one locking position into a release position, an advantageous, at least partially automatic unlocking can be achieved, in particular structurally simple can be a cancellation of a start mode assigned Arrested position can be achieved. Further advantages emerge from the following description of the drawing. In the drawing, an embodiment of the invention is shown. The description and claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.
Dabei zeigen:Showing:
Fig. 1 einen schematisiert dargestellten Längsschnitt durch eine Nockenwellenstellvorrichtung bei abgeschalteter Brennkraftmaschine bzw. einem Notlaufmodus,1 shows a schematic longitudinal section through a camshaft adjusting device with the internal combustion engine switched off or an emergency mode,
Fig. 2 die Nockenwellenstellvorrichtung aus Figur 1 in einem Startmodus undFig. 2, the camshaft adjusting device of Figure 1 in a start mode and
Fig. 3 die Nockenwellenstellvorrichtung aus Figur 1 in einem Regelmodus .Fig. 3, the camshaft adjusting device of Figure 1 in a control mode.
Figur 1 zeigt eine Nockenwellenstellvorrichtung mit einem Rotorgehäuse 17, das über nicht näher dargestellte Befestigungsmittel drehfest mit einem Kettenrad 18 und einem Deckel 19 verbunden ist. Im eingebauten Zustand ist das Kettenrad 18 über eine nicht näher dargestellte Antriebskette mit einer Kurbelwelle antriebstechnisch verbunden. Zwischen dem Deckel 19 und dem Kettenrad 18 ist ein in axialer Richtung zweigeteiltes Statorgehäuse 20 angeordnet, relativ zu dem das Rotorgehäuse 17 hydraulisch in Umfangsrichtung zur Einstellung eines Nockenwellenphasenwinkels antreibbar ist. Das Statorgehäuse 20 ist drehfest mit einer Nockenwelle 21 verbunden, auf der das Kettenrad 18 mit seinem Innenumfang drehbar gelagert ist . Ferner weist die Nockenwellenstellvorrichtung eine Arretiereinheit 10 auf, die eine einem ersten Modus, und zwar einem Notlaufmodus, zugeordnete erste Arretierstellung 11 und eine einem zweiten Modus, und zwar einem Startmodus, zugeordnete zweite, sich von der ersten unterscheidende Arretierstellung 12 aufweist (Figuren 1 und 2) .Figure 1 shows a camshaft adjusting device with a rotor housing 17 which is rotatably connected via fastening means not shown in detail with a sprocket 18 and a cover 19. When installed, the sprocket 18 is drivingly connected via a drive chain not shown in detail with a crankshaft. Between the lid 19 and the sprocket 18, a stator housing 20 divided into two in the axial direction is arranged, relative to which the rotor housing 17 can be driven hydraulically in the circumferential direction for setting a camshaft phase angle. The stator housing 20 is rotatably connected to a camshaft 21, on which the sprocket 18 is rotatably mounted with its inner circumference. Furthermore, the camshaft adjusting device has a locking unit 10 which has a first locking position 11 assigned to a first mode, specifically an emergency mode, and a second locking position 12 assigned to a second mode, specifically a start mode, (FIGS 2).
Die Arretiereinheit 10 weist hierfür ein von einem Bolzen gebildetes doppelwirkendes Arretiermittel 13 auf, das sowohl zur Erzielung der ersten Arretierstellung 11 als auch zur Erzielung der zweiten Arretierstellung 12 vorgesehen ist. Das Arretiermittel 13 ist in axialer Richtung innerhalb des Statorgehäuses 20 verschiebbar gelagert und kann sowohl mit einem ersten, dem Kettenrad 18 zugewandten Ende mit einer an das Kettenrad 18 angeformten Arretierkontur 22 als auch mit einem zweiten, dem Deckel 19 zugewandten Ende mit einer an den Deckel 19 angeformten Arretierkontur 23 in Eingriff gebracht werden.For this purpose, the locking unit 10 has a double-acting locking means 13 formed by a bolt, which is provided both for achieving the first locking position 11 and for achieving the second locking position 12. The locking means 13 is slidably mounted in the axial direction within the stator housing 20 and can both with a first, the sprocket 18 facing the end with an integrally formed on the sprocket 18 Arretierkontur 22 and with a second, the lid 19 end facing with a to the lid 19 molded locking contour 23 are brought into engagement.
Das Arretiermittel 13 ist mit einem radial äußeren Ende eines von einem Federelement 15 gebildeten Koppelmittels gekoppelt, und zwar greift das Federelement 15 formschlüssig in eine Ausnehmung 31 des Arretiermittels 13. Das von einer Tellerfeder gebildete Federelement 15 ist zwischen einem ersten Teil 26 und einem zweiten Teil 27 des Statorgehäuses 20 angeordnet und ist im radial mittleren Bereich um einen an das zweite Teil 27 des Statorgehäuses 20 angeformten, axial in Richtung des ersten Teils 26 weisenden Fortsatz 28 schwenkbar gelagert. Mit einem radial inneren Ende ragt das Federelement 15 in ein von einer Ringnut gebildetes Langloch 16 des Regelventils 24. Zur Betätigung des Regelventils 24 weist die Nockenwellenstellvorrichtung einen elektromagnetischen Aktuator 14 auf, der mit einem Aktuatorstößel 25 mit einem der Nockenwelle 21 abgewandten Ende des Regelventils 24 gekoppelt ist. Auf einer dem elektromagnetischen Aktuator 14 bzw. dem Aktua- torstößel 25 abgewandten Seite des Regelventils 24 ist ein von einer Schraubendruckfeder gebildetes Federelement 29 angeordnet, das mit einem ersten Ende an der Nockenwelle 21 abgestützt ist und mit einem zweiten Ende mit einer Federkraft auf das Regelventil 24 in axialer Richtung zum elektromagnetischen Aktuator 14 wirkt.The locking means 13 is coupled to a radially outer end of a coupling element formed by a spring element 15, namely the spring element 15 engages positively in a recess 31 of the locking means 13. The spring element 15 formed by a plate spring is between a first part 26 and a second part 27 of the stator housing 20 and is pivotally mounted in the radially central region about an integrally formed on the second part 27 of the stator housing 20, axially in the direction of the first part 26 facing extension 28. With a radially inner end, the spring element 15 protrudes into an elongated hole 16 of the control valve 24 formed by an annular groove. For actuation of the control valve 24, the camshaft actuating device has an electromagnetic actuator 14 which has an actuator tappet 25 with an end of the control valve 24 remote from the camshaft 21 is coupled. On A side facing away from the electromagnetic actuator 14 and the Aktua- tappet 25 side of the control valve 24 is a spring element 29 formed by a helical compression spring, which is supported with a first end to the camshaft 21 and with a second end with a spring force on the control valve 24th acts in the axial direction to the electromagnetic actuator 14.
Bei einer abgeschalteten Brennkraftmaschine mit einer entsprechenden Nockenwellenstellvorrichtung ist der elektromagnetische Aktuator 14 stromlos geschaltet und das Regelventil 24 ist durch die Federkraft des von der Schraubendruckfeder gebildeten Federelements 29 in seine der Nockenwelle 21 abgewandte Endstellung verschoben (Figur 1) . Das von der Tellerfeder gebildete Federelement 15 liegt im Bereich seines dem Regelventil 24 zugewandten, radial inneren Endes mit einer der Nockenwelle 21 zugewandten Seite an einem der Nockenwelle 21 zugewandten Rand des Langlochs 16 des Regelventils 24 und mit einer der Nockenwelle 21 abgewandten Seite an dem ersten Teil 26 des Statorgehäuses 20 an. Mit dem dem Regelventil 24 abgewandten radial äußeren Ende ist das Federelement 15 in axialer Richtung zur Nockenwelle 21 bzw. zum Kettenrad 18 ausgelenkt und damit auch das Arretiermittel 13, das in die an das Kettenrad 18 angeformte Arretierkontur 22 eingerastet ist. Das Arretiermittel 13 befindet sich in seiner ersten Arretierstellung 11. In der ersten Arretierstellung 11 sind das Kettenrad 18 und die Nockenwelle 21 in einer Drehstellung zueinander fixiert, in der ein Betrieb über einen gesamten Drehzahlbereich der Brennkraftmaschine und auch ein Starten der Brennkraftmaschine möglich sind.In a switched-off internal combustion engine with a corresponding camshaft adjusting device, the electromagnetic actuator 14 is de-energized and the control valve 24 is displaced by the spring force of the spring element 29 formed by the helical compression spring in its camshaft 21 facing away from the end position (Figure 1). The spring element 15 formed by the plate spring is located in the region of its control valve 24 facing radially inner end with a camshaft 21 facing side on one of the camshaft 21 facing edge of the slot 16 of the control valve 24 and with a camshaft 21 side facing away from the first Part 26 of the stator 20 at. With the control valve 24 remote from the radially outer end of the spring element 15 is deflected in the axial direction to the camshaft 21 and the sprocket 18 and thus also the locking means 13 which is engaged in the integrally formed on the sprocket 18 locking contour 22. The locking means 13 is in its first locking position 11. In the first locking position 11, the sprocket 18 and the camshaft 21 are fixed to each other in a rotational position in which operation over an entire speed range of the internal combustion engine and also starting the internal combustion engine are possible.
Wird die Brennkraftmaschine gestartet, wird das Regelventil 24 mittels des elektromagnetischen Aktuators 14 bzw. mittels des Aktuatorstößels 25 in seine der Nockenwelle 21 zugewandte Endstellung verschoben (Figur 2) . Dabei kommt das von der Tellerfeder gebildete Federelement 15 mit seinem radial inneren Ende mit einem dem elektromagnetischen Aktuator 14 zugewandten Rand des Langlochs 16 in Anlage und wird vom Regelventil 24, angetrieben durch den elektromagnetischen Aktuator 14, in axialer Richtung zur Nockenwelle 21 bewegt. Dadurch bedingt schwenkt das radial äußere Ende des Federelements 15 in Richtung der an den Deckel 19 angeformten Arretierkontur 23, nimmt dabei das Arretiermittel 13 in Richtung des Deckels 19 mit und belastet das Arretiermittel 13 mit einer Federkraft in Richtung des Deckels 19. Durch Nockenwellenwechsel- momente fängt das drehfest mit der Nockenwelle 21 gekoppelte Statorgehäuse 20 - und damit auch das Arretiermittel 13 - in Umfangsrichtung relativ zum Deckel 19 an, zu schwingen, so dass das Arretiermittel 13 in die an den Deckel 19 angeformte Arretierkontur 23 einrasten und seine zweite Arretierstellung 12 einnehmen kann. In der zweiten Arretierstellung 12 sind das Kettenrad 18 und die Nockenwelle 21 in einer von der ersten Drehstellung differierenden zweiten Drehstellung zueinander fixiert, in der beim Starten der Brennkraftmaschine eine maximale Füllung von Zylindern der Brennkraftmaschine ermöglicht wird. Alternativ oder zusätzlich zu der Ausnutzung von Nockenwellenwechselmomenten ist es auch denkbar, andere, dem Fachmann als sinnvoll erscheinende Kräfte und/oder Momente zu nutzen und/oder zusätzliche Mechanismen vorzusehen, um eine gewünschte Verstellung zu erreichen.If the internal combustion engine is started, the control valve 24 by means of the electromagnetic actuator 14 or by means of the actuator ram 25 in its the camshaft 21 facing End position shifted (Figure 2). In this case, the spring element 15 formed by the disc spring comes with its radially inner end with a the electromagnetic actuator 14 facing edge of the slot 16 into engagement and is moved by the control valve 24, driven by the electromagnetic actuator 14 in the axial direction to the camshaft 21. As a result, the radially outer end of the spring element 15 pivots in the direction of the locking contour 23 formed on the cover 19, takes the locking means 13 in the direction of the cover 19 and loads the locking means 13 with a spring force in the direction of the cover 19. By means of camshaft alternating moments the stator housing 20 rotatably coupled to the camshaft 21 - and thus the locking means 13 - in the circumferential direction relative to the cover 19 to swing, so that the locking means 13 engage in the locking contour 23 formed on the cover 19 and occupy its second locking position 12 can. In the second locking position 12, the sprocket 18 and the camshaft 21 are fixed to each other in a different from the first rotational position second rotational position in which when starting the internal combustion engine, a maximum filling of cylinders of the internal combustion engine is made possible. Alternatively or in addition to the utilization of camshaft alternating torques, it is also conceivable to use other forces and / or torques that appear appropriate to the person skilled in the art and / or to provide additional mechanisms in order to achieve a desired adjustment.
Ist die Brennkraftmaschine gestartet und liegt ein ausreichender Öldruck zur Regelung des Nockenwellenphasenwinkels vor, wird das Regelventil 24 in seinen Regelbereich, angetrieben durch den elektromagnetischen Aktuator 14, geführt, der zwischen den Endstellungen des Regelventils 24 liegt (Figur 3) . Die Belastung des radial inneren Endes des von der Tellerfeder gebildeten Federelements 15 durch das Regelventil 24 in Richtung der Nockenwelle 21 wird aufgehoben, so dass sich das Federelement 15 entspannt. Dabei schwenkt das radial innere Ende des Federelements 15, angetrieben durch eine im Federelement 15 gespeicherte Federkraft, in die von der Nockenwelle 21 abgewandte Richtung, und das radial äußere Ende des Federelements 15 schwenkt in Richtung des Kettenrads 18, wodurch das Arretiermittel 13 aus seiner zweiten Arretierstellung 12 in seine Freigabestellung 30 zwischen den Arretierstellungen 11, 12 bewegt wird. Das Rotorgehäuse 17 und das Statorgehäuse 20 sind entriegelt.If the internal combustion engine is started and there is sufficient oil pressure for controlling the camshaft phase angle, the control valve 24 is guided into its control range, driven by the electromagnetic actuator 14, which lies between the end positions of the control valve 24 (FIG. 3). The load of the radially inner end of the spring element 15 formed by the plate spring by the control valve 24 in the direction of the camshaft 21 is released, so that the spring element 15 relaxes. In this case, the radially inner end of the spring element 15, driven by a spring force stored in the spring element 15, pivots in the direction away from the camshaft 21, and the radially outer end of the spring element 15 pivots in the direction of the sprocket 18, whereby the locking means 13 from its second Arresting position 12 is moved to its release position 30 between the locking positions 11, 12. The rotor housing 17 and the stator housing 20 are unlocked.
Zum Regeln eines Öldrucks in den Druckkammern zwischen dem Rotorgehäuse 17 und dem Statorgehäuse 20 und damit zum Regeln des Nockenwellenphasenwinkels wird das Regelventil 24 in axialer Richtung, angetrieben durch den elektromagnetischen Ak- tuator 14, innerhalb des Regelbereichs bewegt, dessen Länge im Wesentlichen durch die axiale Länge des Langlochs 16 definiert ist. Das Langloch 16 dient damit als Entkopplungsmittel im Regelbetrieb zur Entkopplung des Regelventils 24 und des elektromagnetischen Aktuators 14 vom Arretiermittel 13 und der elektromagnetischen Aktuator 14 dient als Stellaktuator zur Einstellung eines Nockenwellenphasenwinkels.For regulating an oil pressure in the pressure chambers between the rotor housing 17 and the stator housing 20 and thus for controlling the camshaft phase angle, the control valve 24 is moved in the axial direction, driven by the electromagnetic actuator 14, within the control range whose length is substantially determined by the axial Length of the slot 16 is defined. The slot 16 thus serves as a decoupling means in the control mode for decoupling the control valve 24 and the electromagnetic actuator 14 from the locking means 13 and the electromagnetic actuator 14 serves as a Stellaktuator for setting a camshaft phase angle.
Wird während des Betriebs eine Stromversorgung des elektromagnetischen Aktuators 14 unterbrochen, beispielsweise aufgrund eines Kabelbruchs oder möglicherweise aktiviert durch eine Steuer- und/oder Regeleinheit nach Erkennen eines zu geringen Öldruckniveaus zur Regelung des Nockenwellenphasenwinkels, wird die dem Notlaufmodus zugeordnete erste Arretierstellung 11 passiv aktiviert. Dabei wird das Regelventil 24, angetrieben durch die Federkraft des von der Schraubendruckfeder gebildeten, als Energiespeicher fungierenden Federelements 29, in seine der Nockenwelle 21 abgewandte Endstellung verschoben (Figur 1) . Das radial innere Ende des von der Tel- lerfeder gebildeten Federelements 15 kommt mit dem der Nockenwelle 21 zugewandten Rand des Langlochs 16 in Anlage und wird vom Regelventil 24 in die von der Nockenwelle 21 abgewandte Richtung mitgenommen. Dadurch bedingt schwenkt das radial äußere Ende des Federelements 15 in Richtung der an das Kettenrad 18 angeformten Arretierkontur 22, nimmt dabei das Arretiermittel 13 in Richtung des Kettenrads 18 mit und belastet das Arretiermittel 13 mit einer Federkraft in Richtung des Kettenrads 18. Durch Nockenwellenwechselmomente fängt das Statorgehäuse 20 - und damit auch das Arretiermittel 13 - in Umfangsrichtung relativ zum Kettenrad 18 an, zu schwingen, so dass das Arretiermittel 13 in die an das Kettenrad 18 angeformte Arretierkontur 22 einrasten und seine, einem Notlaufmodus zugeordnete erste Arretierstellung 11 einnehmen kann. Derselbe Vorgang findet auch beim Abschalten der Brennkraftmaschine statt. If a power supply of the electromagnetic actuator 14 is interrupted during operation, for example due to a cable break or possibly activated by a control and / or regulating unit after detecting a too low oil pressure level for controlling the camshaft phase angle, the first locking position 11 assigned to the emergency mode is activated passively. In this case, the control valve 24, driven by the spring force of the spring formed by the helical compression spring acting as an energy storage spring element 29, in its camshaft 21 facing away from the end position moved (Figure 1). The radially inner end of the Spring formed spring element 15 comes with the camshaft 21 facing edge of the slot 16 in abutment and is taken by the control valve 24 in the direction away from the camshaft 21 direction. As a result, pivots the radially outer end of the spring element 15 in the direction of the integrally formed on the sprocket 18 Arretierkontur 22, thereby takes the locking means 13 in the direction of the sprocket 18 and loaded the locking means 13 with a spring force in the direction of the sprocket 18. By camshaft alternating moments starts Stator housing 20 - and thus the locking means 13 - in the circumferential direction relative to the sprocket 18 to swing, so that the locking means 13 engage in the integrally formed on the sprocket 18 Arretierkontur 22 and his, a runflat mode associated first locking position 11 can take. The same process also takes place when switching off the internal combustion engine.
Bezugszeichenreference numeral
10 Arretiereinheit10 locking unit
11 ArretierStellung11 locking position
12 ArretierStellung12 locking position
13 Arretiermittel13 locking means
14 Aktuator14 actuator
15 Federelement15 spring element
16 Langloch16 long hole
17 Rotorgehäuse17 rotor housing
18 Kettenrad18 sprocket
19 Deckel19 lids
20 Statorgehäuse20 stator housing
21 Nockenwelle21 camshaft
22 Arretierkontur 3 Arretierkontur 4 Regelventil22 Arretierkontur 3 Arretierkontur 4 control valve
25 AktuatorStößel 6 Teil 7 Teil 8 Fortsatz 9 Federelement 0 Freigabesteilung 1 Ausnehmung 25 Actuator tappet 6 Part 7 Part 8 Extension 9 Spring element 0 Release graduation 1 Recess

Claims

Patentansprüche claims
1. Nockenwellenstellvorrichtung mit einer Arretiereinheit1. Camshaft adjusting device with a locking unit
(10), die zumindest eine einem ersten Modus zugeordnete erste Arretierstellung (11) aufweist, dadurch gekennzeichnet, dass die Arretiereinheit (10) neben der dem ersten Modus zugeordneten ersten Arretierstellung (11) zumindest eine einem zweiten Modus zugeordnete zweite Arretierstellung (12) aufweist.(10), which has at least one first mode associated with a first locking position (11), characterized in that the locking unit (10) in addition to the first mode associated first locking position (11) has at least one second mode associated second locking position (12) ,
2. Nockenwellenstellvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass zumindest eine der Arretierstellungen (12) einem Startmodus zugeordnet ist.2. camshaft adjusting device according to claim 1, characterized in that at least one of the locking positions (12) is associated with a start mode.
3. Nockenwellenstellvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Arretiereinheit (10) dazu vorgesehen ist, zumindest eine der Arretierstellungen (11) passiv zu aktivieren. 3. camshaft adjusting device according to claim 1 or 2, characterized in that the locking unit (10) is provided to passively activate at least one of the locking positions (11).
4. Nockenwellenstellvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Arretiereinheit (10) wenigstens ein zumindest doppelwirkendes Arretiermittel (13) aufweist.4. Camshaft adjusting device according to one of the preceding claims, characterized in that the locking unit (10) has at least one at least double-acting locking means (13).
5. Nockenwellenstellvorrichtung nach einem der vorhergehenden Ansprüche, gekennzeichnet durch zumindest einen elektrischen Aktuator (14), der zum Betätigen zumindest eines Arretiermittels (13) der Arretiereinheit (10) vorgesehen ist.5. Camshaft adjusting device according to one of the preceding claims, characterized by at least one electric actuator (14) which is provided for actuating at least one locking means (13) of the locking unit (10).
6. Nockenwellenstellvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der elektrische Aktuator (14) einstückig mit einem Stel- laktuator zur Einstellung eines Nockenwellenphasenwinkels ausgeführt ist.6. Camshaft adjusting device according to one of the preceding claims, characterized in that the electric actuator (14) is designed in one piece with a Stel laktuator for setting a camshaft phase angle.
7. Nockenwellenstellvorrichtung nach Anspruch 5 oder 6, gekennzeichnet durch wenigstens ein von einem Federelement (15) gebildetes Koppelmittel, das zur Kopplung des Aktuators (14) mit einem Arretiermittel (13) vorgesehen ist.7. camshaft adjusting device according to claim 5 or 6, characterized by at least one of a spring element (15) formed coupling means which is provided for coupling the actuator (14) with a locking means (13).
8. Nockenwellenstellvorrichtung zumindest nach Anspruch 5, gekennzeichnet durch wenigstens ein Entkopplungsmittel, das zur Entkopplung des Aktuators (14) vom Arretiermittel (13) vorgesehen ist . 8. camshaft adjusting device at least according to claim 5, characterized by at least one decoupling means, which is provided for decoupling of the actuator (14) from the locking means (13).
9. Nockenwellenstellvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Arretiereinheit (10) ein von einer Tellerfeder gebildetes Federelement (15) aufweist, das zur Belastung wenigstens eines Arretiermittels (13) vorgesehen ist.9. Camshaft adjusting device according to one of the preceding claims, characterized in that the locking unit (10) has a spring element formed by a plate spring element (15) which is provided for loading at least one locking means (13).
10. Nockenwellenstellvorrichtung nach einem der vorhergehenden Ansprüche, gekennzeichnet durch wenigstens ein Federelement (15), das dazu vorgesehen ist, wenigstens ein Arretiermittel (13) mit seiner Federkraft aus wenigstens einer Arretierstellung (12) in eine Freigabestellung (30) zu bewegen. 10. Camshaft adjusting device according to one of the preceding claims, characterized by at least one spring element (15) which is provided to move at least one locking means (13) with its spring force from at least one locking position (12) in a release position (30).
PCT/EP2006/008188 2005-09-20 2006-08-19 Camshaft adjusting device WO2007033737A1 (en)

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WO2010116532A1 (en) * 2009-04-10 2010-10-14 トヨタ自動車 株式会社 Variable valve timing mechanism with intermediate locking mechanism and fabrication method thereof
EP2520772B1 (en) * 2011-05-02 2016-06-29 MAGNA Powertrain GmbH & Co KG Camshaft adjuster with emergency operation device

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4858572A (en) * 1987-09-30 1989-08-22 Aisin Seiki Kabushiki Kaisha Device for adjusting an angular phase difference between two elements
DE3937644A1 (en) * 1989-11-11 1991-05-16 Bayerische Motoren Werke Ag IC engine camshaft hydraulic rotary angle adjuster - has locking device securing vaned wheel in initial angular position w.r.t. sliding vane wheel
DE19756015A1 (en) * 1997-12-17 1999-06-24 Porsche Ag Device for the hydraulic rotation angle adjustment of a shaft to a drive wheel
US6332439B2 (en) * 1998-12-07 2001-12-25 Mitsubishi Denki Kabushiki Kaisha Vane type hydraulic actuator
EP1065348A2 (en) * 1999-06-30 2001-01-03 BorgWarner Inc. Variable valve timing with actuator locking for internal combustion engine
US6338323B1 (en) * 1999-09-28 2002-01-15 Unisia Jecs Corporation Vane type variable valve timing control apparatus and control method
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DE10220687A1 (en) * 2002-05-10 2003-11-20 Ina Schaeffler Kg Camshaft adjuster with electric drive
DE102004002395A1 (en) * 2003-01-17 2004-08-05 Hitachi Unisia Automotive, Ltd., Atsugi Valve timing system for an internal combustion engine
DE10330449B3 (en) * 2003-07-05 2005-02-24 Daimlerchrysler Ag Camshaft adjuster for internal combustion engine has stator and first thrust washer bounding adjuster towards cam frictionally joined to camshaft by cylindrical surface

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