DE102008049103A1 - Valve train device, particularly for internal combustion engine, has two cam elements which are axially adjusted by shifting gate, and sensor unit - Google Patents
Valve train device, particularly for internal combustion engine, has two cam elements which are axially adjusted by shifting gate, and sensor unit Download PDFInfo
- Publication number
- DE102008049103A1 DE102008049103A1 DE200810049103 DE102008049103A DE102008049103A1 DE 102008049103 A1 DE102008049103 A1 DE 102008049103A1 DE 200810049103 DE200810049103 DE 200810049103 DE 102008049103 A DE102008049103 A DE 102008049103A DE 102008049103 A1 DE102008049103 A1 DE 102008049103A1
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- sensor
- cam
- elements
- drive device
- valve drive
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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
- 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
- F01L13/0036—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 the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
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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
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
- F01L1/053—Camshafts overhead type
-
- 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
- F01L13/0036—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 the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
- F01L2013/0052—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 the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction with cams provided on an axially slidable sleeve
-
- 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
- F01L2820/00—Details on specific features characterising valve gear arrangements
- F01L2820/04—Sensors
- F01L2820/041—Camshafts position or phase sensors
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
Die Erfindung betrifft eine Ventiltriebvorrichtung nach dem Oberbegriff des Anspruchs 1.The The invention relates to a valve drive device according to the preamble of claim 1.
Es sind bereits Ventiltriebvorrichtungen, insbesondere einer Brennkraftmaschine, mit zumindest einem ersten Nockenelement und einem zweiten Nockenelement, die mittels einer Schaltkulisse axial verschiebbar sind und die dazu vorgesehen sind, einen schaltbaren Ventiltrieb bereitzustellen, und mit einer Sensoreinheit, die dazu vorgesehen ist, eine Drehlage und/oder eine Phasenlage zumindest eines Nockenelements zu bestimmen, bekannt.It are already valvetrain devices, in particular an internal combustion engine, with at least a first cam element and a second cam element, which are axially displaceable by means of a shift gate and the intended to provide a switchable valve train, and with a sensor unit which is provided, a rotational position and / or to determine a phase angle of at least one cam element, known.
Der Erfindung hegt insbesondere die Aufgabe zugrunde, eine konstruktiv einfache Ausgestaltung bereitzustellen, die es erlaubt, eine Schaltstellung und eine Phasenlage beider Nockenelemente zu bestimmen. Sie wird gemäß der Erfindung durch die Merkmale des Anspruchs 1 gelöst. Weitere Ausgestaltungen ergeben sich aus den Unteransprüchen.Of the Invention has the particular task of a constructive to provide a simple design that allows a switch position and to determine a phase angle of both cam elements. she will according to the invention solved by the features of claim 1. Further embodiments emerge from the dependent claims.
Die Erfindung geht aus von einer Ventiltriebvorrichtung, insbesondere einer Brennkraftmaschine, mit zumindest einem ersten Nockenelement und einem zweiten Nockenelement, die mittels einer Schaltkulisse axial verschiebbar sind und die dazu vorgesehen sind, einen schaltbaren Ventiltrieb bereitzustellen, und mit einer Sensoreinheit, die dazu vorgesehen ist, eine Drehlage und/oder eine Phasenlage zumindest eines Nockenelements zu bestimmen.The The invention is based on a valve drive device, in particular an internal combustion engine, with at least a first cam element and a second cam element, which by means of a shift gate are axially displaceable and which are intended to be a switchable Valve train provide, and with a sensor unit, the is provided, a rotational position and / or a phase position at least to determine a cam element.
Es wird eine Sensoreinheit mit einem ersten Sensorelement, das mit dem ersten Nockenelement gekoppelt ist, und mit einem zu dem ersten Sensorelement korrespondierenden zweiten Sensorelement, das mit dem zweiten Nockenelement gekoppelt ist, vorgeschlagen. Dadurch kann eine konstruktiv einfache Ausgestaltung gefunden werden, die es er laubt, eine Schaltstellung und eine Phasenlage beider Nockenelemente zu bestimmen. Unter „korrespondierend” soll dabei insbesondere verstanden werden, dass die beiden Sensorelemente funktionell und/oder konstruktiv aufeinander abgestimmt und/oder sich ergänzend ausgeführt sind. Vorzugsweise sollen die korrespondierenden Sensorelemente dazu vorgesehen sein, miteinander kombiniert zu werden. Unter „gekoppelt” soll in diesem Zusammenhang insbesondere verstanden werden, dass das Nockenelement und das Sensorelement für einen Schaltvorgang des Nockenelements wirkungsmäßig miteinander verbunden sind. Insbesondere soll darunter verstanden werden, dass das Sensorelement an ein axiales Verschieben des Nockenelements gekoppelt ist. Unter „vorgesehen” soll insbesondere speziell ausgestattet, ausgelegt und/oder programmiert verstanden werden.It is a sensor unit with a first sensor element, with coupled to the first cam element, and with one to the first Sensor element corresponding second sensor element, with coupled to the second cam element proposed. Thereby can be found a structurally simple embodiment, the he allows it, a switching position and a phase angle of both cam elements to determine. Under "corresponding" should thereby In particular, it should be understood that the two sensor elements are functional and / or structurally coordinated and / or are complementary. The corresponding sensor elements should preferably be provided for this purpose to be combined with each other. Under "coupled" should in this context in particular, be understood that the cam member and the sensor element for one Switching operation of the cam element are operatively connected together. In particular, it should be understood that the sensor element is coupled to an axial displacement of the cam member. In particular, "provided" is intended specially equipped, designed and / or programmed to be understood.
Weiter wird vorgeschlagen, dass die Sensoreinheit zumindest ein drittes Sensorelement aufweist, das mit zumindest einem der Nockenelemente gekoppelt ist. Dadurch kann einfach eine weitere Kombination von Sensorelementen gebildet werden, die vorzugsweise eindeutig einer Schaltstellung zugeordnet ist. Insbesondere wird vorgeschlagen, dass die Sensoreinheit vier Sensorelemente aufweist. Vorzugsweise sind jeweils zwei Sensorelemente mit einem Nockenelement gekoppelt.Further It is proposed that the sensor unit at least a third Sensor element which is coupled to at least one of the cam elements is. This can easily be another combination of sensor elements are formed, which is preferably a unique switching position assigned. In particular, it is proposed that the sensor unit has four sensor elements. Preferably, two sensor elements each coupled with a cam element.
Ferner wird vorgeschlagen, dass das dritte Sensorelement korrespondierend zu dem ersten und/oder dem zweiten Nockenelement ausgeführt ist. Dadurch kann die weitere Kombination besonders einfach gebildet werden. Grundsätzlich wird insbesondere vorgeschlagen, dass die Sensorelemente des einen Nockenelements korrespondierend zu den Sensorelementen des zweiten Nockenelements ausgebildet sind. Vorteilhafterweise weist die Sensoreinheit vier Sensorelemente auf, die dazu vorgesehen sind, vier verschiedene Kombinationen zu bilden.Further It is proposed that the third sensor element correspond is designed to the first and / or the second cam member. This makes the further combination particularly easy become. in principle In particular, it is proposed that the sensor elements of the one Cam element corresponding to the sensor elements of the second Cam element are formed. Advantageously, the sensor unit four sensor elements, which are intended to four different To form combinations.
Vorzugsweise ist zumindest eines der Sensorelemente axial verschiebbar. Dadurch können die Kombinationen einfach gebildet werden. Insbesondere sollen das Nockenelement und das mit dem Nockenelement gekoppelte Sensorelement für eine axiale Verschiebung miteinander gekoppelt sein. Vorteilhafterweise ist das Sensorelement axial fest mit dem Nockenelement verbunden und wird mittels des Nockenelements in axialer Richtung verschoben. Dabei ist es vorteilhaft, das Sensorelement fest auf dem Nockenelement anzuordnen. Grundsätzlich kann das Sensorelement aber auch beabstandet zu dem Nockenelement angeordnet sein und mittels eines Koppelelements, wie beispielsweise eine in ei ner Grundnockenwelle verlaufenden Koppelstange, mit dem Nockenelement axial fest gekoppelt sein. Weiter ist es vorteilhaft, wenn das Nockenelement und das Sensorelement drehfest miteinander verbunden sind.Preferably At least one of the sensor elements is axially displaceable. Thereby can the combinations are made easy. In particular, that should Cam element and coupled to the cam element sensor element for one axial displacement be coupled together. advantageously, the sensor element is axially fixedly connected to the cam element and is displaced by means of the cam member in the axial direction. It is advantageous, the sensor element fixed to the cam member to arrange. in principle However, the sensor element can also be spaced from the cam element be arranged and by means of a coupling element, such as a running in egg ner basic camshaft coupling rod, with the cam element be axially fixed coupled. Further, it is advantageous if the cam element and the sensor element rotatably connected to each other.
Weiter wird vorgeschlagen, dass zumindest eines der Sensorelemente eine Detektionsschaltstellung und eine Neutralschaltstellung aufweist. Unter einer „Dektektionsschaltstellung” soll insbesondere eine Schaltstellung verstanden werden, in der das entsprechende Sensorelement in einem Detektionsbereich eines Sensormittels angeordnet ist. Unter einer „Neutralschaltstellung” soll insbesondere eine Schaltstellung verstanden werden, in der das Sensorelement außerhalb des Detektionsbereich des Sensormittels angeordnet ist. Durch eine entsprechende Ausgestaltung kann einfach eine Kombination mittels des Sensorelements geschalten werden. Vorzugsweise weisen sämtliche Sensorelemente eine Detektionssschaltstellung und eine Neutralschaltstellung auf, wodurch einfach verschiedene Kombinationen geschaltet werden können.Further It is proposed that at least one of the sensor elements a Detection switching position and a neutral switching position has. Under a "Dektektionsschaltstellung" should in particular a Switching be understood, in which the corresponding sensor element is arranged in a detection area of a sensor means. Under a "neutral switching position" should in particular a switching position are understood, in which the sensor element outside the detection area of the sensor means is arranged. By a appropriate design can simply be a combination of the Sensor element are switched. Preferably, all have Sensor elements on a detection switching position and a neutral switching position, whereby simply different combinations can be switched.
Vorzugsweise sind zumindest zwei der Sensorelemente dazu vorgesehen, zeitgleich in einer Detektionsschaltstellung angeordnet zu werden. Dadurch können die Kombinationen besonders einfach geschaltet werden.Preferably At least two of the sensor elements are provided for this purpose at the same time to be arranged in a detection switching position. Thereby can the combinations are particularly easy to be switched.
Ferner wird vorgeschlagen, dass in zumindest einem Betriebsmodus zumindest zwei der Sensorelemente dazu vorgesehen sind, in einer gemeinsamen radialen Querschnittsebene angeordnet zu werden. Dadurch können die Sensorelemente einfach zeitgleich in der Detekionsschaltstellung angeordnet werden. Unter einer „radialen Querschnittsebene” soll dabei insbesondere eine Querschnittsebene senkrecht zu einer Rotationsachse verstanden werden.Further It is proposed that in at least one operating mode at least two of the sensor elements are provided in a common radial cross-sectional plane to be arranged. This allows the Sensor elements simply at the same time in the Detekionsschaltstellung to be ordered. Under a "radial cross-sectional plane" is intended in particular a cross-sectional plane perpendicular to a rotation axis be understood.
In einer besonders vorteilhaften Ausgestaltung wird vorgeschlagen, dass zumindest eines der Sensorelemente zumindest teilweise ringsegmentförmig ausgebildet ist. Dadurch können besonders einfach korrespondierende Sensorelemente realisiert werden. Insbesondere können einfach mehrere ringsegmentförmige Sensorelemente gleichzeitig in einer radialen Querschnittsebene angeordnet werden.In a particularly advantageous embodiment is proposed that at least one of the sensor elements is at least partially ring-segment-shaped is. Thereby can particularly simple corresponding sensor elements can be realized. In particular, you can simply several ring segment-shaped Sensor elements simultaneously in a radial cross-sectional plane to be ordered.
Vorteilhafterweise sind die Sensorelemente dazu vorgesehen, zumindest zwei voneinander unterscheidbare Sensorräder zu bilden. Mittels eines Sensorrads kann einfach eine Drehbewegung detektiert werden. Mittels unterschiedlicher Sensorräder kann einfach ei ne Schalstellung detektiert werden. Unter „unterschiedlich” soll dabei insbesondere verstanden werden, dass Signale der Sensorräder voneinander unterscheidbar sind. Unter einem „Sensorrad” soll dabei insbesondere eine in einer Querschnittsebene angeordnete Vorrichtung verstanden werden, die dazu vorgesehen ist, bei einer Drehbewegung der Nockenelemente einen mittels eines Sensormittels auswertbaren Parameter bereitzustellen. Unter „gekoppelt” soll insbesondere verstanden werden, dass eine Bewegung des Nockenelements wirkungsmäßig mit dem Sensorrad gekoppelt ist. Insbesondere soll darunter verstanden werden, dass eine axiale Bewegung des Nockenelements wirkungsmäßig mit dem Sensorrad gekoppelt ist.advantageously, the sensor elements are provided to at least two from each other distinguishable sensor wheels to build. By means of a sensor wheel can easily rotate be detected. By means of different sensor wheels can simply a switching position can be detected. Under "different" should thereby in particular, be understood that signals from the sensor wheels from each other are distinguishable. Under a "sensor wheel" is intended in particular a understood in a cross-sectional plane device, which is intended, upon a rotational movement of the cam elements to provide a parameter that can be evaluated by means of a sensor. Under "coupled" in particular be understood that a movement of the cam member with effect coupled to the sensor wheel. In particular, it should be understood be that an axial movement of the cam member with effect coupled to the sensor wheel.
Weiter wird vorgeschlagen, dass zumindest zwei der Sensorelemente eine unterscheidbare Topographie aufweisen. Dadurch können unterschiedliche Sensorräder besonders einfach bereitgestellt werden. Vorzugsweise wird die unterschiedliche Topographie mittels unterschiedlicher Sensorelemente erzeugt. Es ist grundsätzlich aber auch möglich, in Abhängigkeit von einer Schalstellung der Nockenelemente eine Topographie der Sensorelemente zu verändern, wie beispielsweise ein radial beweglicher Sensorradzahn, der an eine axiale Bewegung des Nockenelements gekoppelt ist und der mittels der axialen Bewegung des Nockenelements ein- bzw. ausgefahren wird.Further It is proposed that at least two of the sensor elements a have distinguishable topography. This allows different sensor wheels especially simply be provided. Preferably, the different Topography generated by means of different sensor elements. It is basically but also possible dependent on from a switching position of the cam elements a topography of To change sensor elements, such as a radially movable sensor gear tooth an axial movement of the cam member is coupled and the means the axial movement of the cam member is retracted or extended.
In einer vorteilhaften Ausgestaltung der Erfindung wird vorgeschlagen, dass die Sensoreinheit ein Sensormittel aufweist, das für eine Auswertung der Sensorelemente vorgesehen ist. Durch die Verwendung eines Sensormittels kann eine einfache und kostengünstige Sensoreinheit bereitgestellt werden. Insbesondere soll die Sensoreinheit lediglich ein einziges Sensormittel zur Auswertung aller Sensorelemente aufweisen.In an advantageous embodiment of the invention is proposed in that the sensor unit has a sensor means which is suitable for an evaluation of the Sensor elements is provided. By using a sensor means can be a simple and inexpensive Sensor unit can be provided. In particular, the sensor unit only a single sensor means for evaluating all sensor elements exhibit.
Vorteilhafterweise ist das Sensormittel für eine berührungslose Auswertung vorgesehen. Dadurch kann eine einfache und verschleißarme Sensoreinheit realisiert werden.advantageously, is the sensor means for a contactless Evaluation provided. This allows a simple and low-wear sensor unit will be realized.
Weitere Vorteile ergeben sich aus der folgenden Zeichnungsbeschreibung. In den Zeichnungen ist ein Ausführungsbeispiel der Erfindung dargestellt. Die Zeichnungen, 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.Further Advantages are shown in the following description of the drawing. In the drawings is an embodiment represented the invention. The drawings, the description and the requirements contain numerous features in combination. The specialist will the features expediently also consider individually and to meaningful further combinations sum up.
Dabei zeigen:there demonstrate:
Zum
Verschieben der Nockenelemente
Die
Kulissenbahnen sind S-förmig
ausgeführt.
Um die Nockenelemente
Die
Nockenelemente
Die
Nockenelemente
In
einem Bereich, in dem die Nockenelemente
In
dem Bereich, in dem die Nockenelemente
Die
Sensoreinheit
Die
Sensorelemente
Die
Sensorelemente
Die
Sensorelemente
Das
Sensormittel
Die
Topographie des ersten Sensorelements
Die
Sensorelemente
Die
Sensorelemente
Ist
das erste Nockenelement
Ist
das zweite Nockenelement
Durch
obige Zuordnung sind stets zwei der Sensorelemente
Die
Sensorelemente
Aufgrund
der möglichen
Kombinationen der Schaltstellung der Nockenelemente
Mittels
der Sensorräder
Claims (12)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE200810049103 DE102008049103A1 (en) | 2008-09-26 | 2008-09-26 | Valve train device, particularly for internal combustion engine, has two cam elements which are axially adjusted by shifting gate, and sensor unit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE200810049103 DE102008049103A1 (en) | 2008-09-26 | 2008-09-26 | Valve train device, particularly for internal combustion engine, has two cam elements which are axially adjusted by shifting gate, and sensor unit |
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DE200810049103 Withdrawn DE102008049103A1 (en) | 2008-09-26 | 2008-09-26 | Valve train device, particularly for internal combustion engine, has two cam elements which are axially adjusted by shifting gate, and sensor unit |
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Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010035186A1 (en) | 2010-08-24 | 2012-03-01 | Schaeffler Technologies Gmbh & Co. Kg | Valve train for use in internal combustion engine, has actuator associated to sensors and arranged on axial region for detecting instantaneous axial positions, where actuator is exactly assigned to cam pieces |
DE102011011455A1 (en) * | 2011-02-17 | 2012-08-23 | Daimler Ag | Device for valve train device to operate valve train of motor car, has sensor unit with sensor element to detect parameter depending on force acting on switching elements, where parameter is designed as axial movement of switching elements |
DE102011001125A1 (en) * | 2011-03-07 | 2012-09-13 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Valve train for an internal combustion engine |
CN103174486A (en) * | 2011-12-21 | 2013-06-26 | Dr.Ing.h.c.F.保时捷股份公司 | Valve drive device used in internal combustion engine |
DE102012006820A1 (en) * | 2012-04-04 | 2013-10-10 | Audi Ag | Method for operating valve drive of internal combustion engine, involves activating cam actuator to renewed displacement of cam support into same target position if actual position is not target position |
WO2013186296A1 (en) * | 2012-06-15 | 2013-12-19 | Avl Deutschland Gmbh | Guiding groove arrangement on a shaft and method for axially displacing a shaft having a guiding groove arrangement |
DE102013210487A1 (en) * | 2013-06-06 | 2014-12-24 | Schaeffler Technologies Gmbh & Co. Kg | Sliding cam system with position detection |
DE102014001568B3 (en) * | 2014-02-05 | 2015-03-26 | Audi Ag | Method for operating an internal combustion engine and corresponding internal combustion engine |
WO2015058953A1 (en) * | 2013-10-24 | 2015-04-30 | Volkswagen Aktiengesellschaft | Camshaft arrangement of a reciprocating piston internal combustion engine and a reciprocating piston internal combustion engine having such a camshaft arrangement |
WO2015067269A3 (en) * | 2013-11-11 | 2015-06-25 | Schaeffler Technologies AG & Co. KG | Variable-stroke valve train of an internal combustion engine |
DE102014212997A1 (en) | 2014-07-04 | 2015-11-05 | Schaeffler Technologies AG & Co. KG | Valve drive for an internal combustion engine, and method for determining a current axial position of a cam carrier on a base camshaft of a valve train |
CN107283267A (en) * | 2016-03-23 | 2017-10-24 | 株式会社捷太格特 | Cam ground device and cam ground method |
DE102009014517B4 (en) | 2009-03-23 | 2020-01-09 | Audi Ag | Valve train for gas exchange valves of an internal combustion engine with a displaceable camshaft sensor wheel |
WO2020182400A1 (en) * | 2019-03-13 | 2020-09-17 | Eto Magnetic Gmbh | Electromagnetic actuator arrangement |
DE102021214169A1 (en) | 2021-12-11 | 2023-06-15 | Volkswagen Aktiengesellschaft | Slider cam assembly with sensor for detecting the position of the slide cams |
WO2024088965A1 (en) | 2022-10-26 | 2024-05-02 | Volkswagen Ag | Method for determining a cam piece position of a valve train for an internal combustion engine, and valve train |
-
2008
- 2008-09-26 DE DE200810049103 patent/DE102008049103A1/en not_active Withdrawn
Cited By (31)
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DE102009014517B4 (en) | 2009-03-23 | 2020-01-09 | Audi Ag | Valve train for gas exchange valves of an internal combustion engine with a displaceable camshaft sensor wheel |
DE102010035186A1 (en) | 2010-08-24 | 2012-03-01 | Schaeffler Technologies Gmbh & Co. Kg | Valve train for use in internal combustion engine, has actuator associated to sensors and arranged on axial region for detecting instantaneous axial positions, where actuator is exactly assigned to cam pieces |
DE102011011455A1 (en) * | 2011-02-17 | 2012-08-23 | Daimler Ag | Device for valve train device to operate valve train of motor car, has sensor unit with sensor element to detect parameter depending on force acting on switching elements, where parameter is designed as axial movement of switching elements |
CN102678211B (en) * | 2011-03-07 | 2015-04-29 | Dr.Ing.h.c.F.保时捷股份公司 | Valve drive for an internal combustion engine |
DE102011001125A1 (en) * | 2011-03-07 | 2012-09-13 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Valve train for an internal combustion engine |
CN102678211A (en) * | 2011-03-07 | 2012-09-19 | Dr.Ing.h.c.F.保时捷股份公司 | Valve drive for an internal combustion engine |
DE102011001125B4 (en) | 2011-03-07 | 2023-06-01 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Valve train for an internal combustion engine |
US8567361B2 (en) | 2011-03-07 | 2013-10-29 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Valve drive for an internal combustion engine |
CN103174486A (en) * | 2011-12-21 | 2013-06-26 | Dr.Ing.h.c.F.保时捷股份公司 | Valve drive device used in internal combustion engine |
DE102011056833A1 (en) | 2011-12-21 | 2013-06-27 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Valve train device for internal combustion engine, has cam elements that are provided with first and second transmitter wheels, and third torque-proof and axially fixed transmitter wheel which is located on basic camshaft |
DE102011056833B4 (en) | 2011-12-21 | 2023-03-23 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Valve train device for an internal combustion engine |
RU2526145C2 (en) * | 2011-12-21 | 2014-08-20 | Др. Инг. Х.Ц. Ф. Порше Акциенгезелльшафт | Ice valve gear drive |
DE102012006820B4 (en) * | 2012-04-04 | 2019-08-22 | Audi Ag | Method for operating a valve train of an internal combustion engine |
DE102012006820A1 (en) * | 2012-04-04 | 2013-10-10 | Audi Ag | Method for operating valve drive of internal combustion engine, involves activating cam actuator to renewed displacement of cam support into same target position if actual position is not target position |
WO2013186296A1 (en) * | 2012-06-15 | 2013-12-19 | Avl Deutschland Gmbh | Guiding groove arrangement on a shaft and method for axially displacing a shaft having a guiding groove arrangement |
DE102013210487A1 (en) * | 2013-06-06 | 2014-12-24 | Schaeffler Technologies Gmbh & Co. Kg | Sliding cam system with position detection |
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