DE102007052251A1 - Valve drive device - Google Patents
Valve drive device Download PDFInfo
- Publication number
- DE102007052251A1 DE102007052251A1 DE200710052251 DE102007052251A DE102007052251A1 DE 102007052251 A1 DE102007052251 A1 DE 102007052251A1 DE 200710052251 DE200710052251 DE 200710052251 DE 102007052251 A DE102007052251 A DE 102007052251A DE 102007052251 A1 DE102007052251 A1 DE 102007052251A1
- Authority
- DE
- Germany
- Prior art keywords
- camshaft
- valve
- camshaft element
- drive device
- valve train
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 230000008878 coupling Effects 0.000 claims abstract description 11
- 238000010168 coupling process Methods 0.000 claims abstract description 11
- 238000005859 coupling reaction Methods 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000002485 combustion reaction Methods 0.000 description 2
- 241000209761 Avena Species 0.000 description 1
- 235000007319 Avena orientalis Nutrition 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
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
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D11/00—Clutches in which the members have interengaging parts
- F16D11/08—Clutches in which the members have interengaging parts actuated by moving a non-rotating part axially
- F16D11/10—Clutches in which the members have interengaging parts actuated by moving a non-rotating part axially with clutching members movable only axially
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D3/00—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive
- F16D3/02—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions
- F16D3/06—Yielding couplings, i.e. with means permitting movement between the connected parts during the drive adapted to specific functions specially adapted to allow axial displacement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
- F01L2001/0471—Assembled camshafts
- F01L2001/0473—Composite camshafts, e.g. with cams or cam sleeve being able to move relative to the inner camshaft or a cam adjusting rod
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
- F01L2001/0475—Hollow camshafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- 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
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D1/00—Couplings for rigidly connecting two coaxial shafts or other movable machine elements
- F16D1/10—Quick-acting couplings in which the parts are connected by simply bringing them together axially
- F16D2001/102—Quick-acting couplings in which the parts are connected by simply bringing them together axially the torque is transmitted via polygon shaped connections
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Die Erfindung geht aus von einer Ventiltriebvorrichtung mit zumindest einem ersten Nockenwellenelement (10) und einem zweiten Nockenwellenelement (11). Es wird vorgeschlagen, dass die Ventiltriebvorrichtung eine Kopplungsvorrichtung (12) umfasst, die dazu vorgesehen ist, ein Antriebsmoment von dem ersten Nockenwellenelement (10) auf das zweite Nockenwellenelement (11) zu übertragen.The invention is based on a valve drive device with at least one first camshaft element (10) and a second camshaft element (11). It is proposed that the valve drive device comprises a coupling device (12) which is provided to transmit a drive torque from the first camshaft element (10) to the second camshaft element (11).
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 einer Brennkraftmaschine mit zumindest einem ersten Nockenwellenelement und einem zweiten Nockenwellenelement bekannt.It are already valvetrain devices of an internal combustion engine with at least a first camshaft element and a second camshaft element known.
Der Erfindung liegt insbesondere die Aufgabe zugrunde, eine Ventiltriebvorrichtung bereitzustellen, die eine erhöhte Torsionssteifigkeit aufweist. Die Aufgabe wird jeweils gelöst durch die Merkmale der unabhängigen Patentansprüche, wobei weitere Ausgestaltungen der Erfindung den Unteransprüchen entnommen werden können.Of the The invention is in particular the object of a valve drive device to provide an increased Torsion stiffness has. The task is solved by the characteristics of the independent claims, wherein further embodiments of the invention taken from the dependent claims can be.
Die Erfindung geht aus von Ventiltriebvorrichtung mit zumindest einem ersten Nockenwellenelement und einem zweiten Nockenwellenelement.The Invention is based on valve train device with at least one first camshaft element and a second camshaft element.
Es wird vorgeschlagen, dass die Ventiltriebvorrichtung eine Kopplungsvorrichtung umfasst, die dazu vorgesehen ist, ein Antriebsmoment von dem ersten Nockenwellenelement auf das zweite Nockenwellenelement zu übertragen. Dadurch kann auf eine Nockenwelle, die das Antriebsmoment parallel auf das erste und zweite Nockenwellenelement überträgt, verzichtet werden, und das Antriebsmoment kann über die Nockenwellenele mente übertragen werden, die einen vorteilhaft großen Querschnitt aufweisen können. Dadurch kann eine besonders torsionssteife Ventiltriebvorrichtung realisiert werden. Unter „vorgesehen" soll dabei insbesondere speziell ausgestattet, ausgelegt und/oder programmiert verstanden werden.It It is proposed that the valve drive device is a coupling device which is intended to be a driving torque of the first To transfer camshaft element to the second camshaft element. This allows for a camshaft that drives the torque in parallel transmits to the first and second camshaft member, be waived, and the drive torque can over the camshaft elements are transmitted, the one big advantage Cross section may have. This can be a particularly torsionally rigid valve drive device will be realized. By "intended" is intended in particular specially equipped, designed and / or programmed understood become.
Weiter wird vorgeschlagen, dass zumindest eines der Nockenwellenelemente einen Nockenträger aufweist. Dadurch kann das Antriebsmoment vorteilhaft direkt an eine Ventilbetätigungsvorrichtung, wie beispielsweise einen Kipphebel, weitergeleitet werden. Vorteilhafterweise sind der Nockenträger und das Nockenwellenelement einteilig ausgeführt.Further It is proposed that at least one of the camshaft elements a cam carrier having. This allows the drive torque advantageous directly a valve actuator, such as For example, a rocker arm to be forwarded. advantageously, are the cam carrier and the camshaft element made in one piece.
Vorzugsweise weist der Nockenträger zumindest ein Nockenpaar auf, das dazu vorgesehen ist, in zumindest einem Betriebsmodus eine Hubumschaltung bereitzustellen. Dadurch kann die Ventiltriebvorrichtung unterschiedlichen Betriebsmodi angepasst werden. Vorteilhafterweise sind der Nockenträger und das Nockenpaar einteilig ausgeführt.Preferably has the cam carrier at least one cam pair, which is provided in at least provide a Hubumschaltung an operating mode. Thereby For example, the valve train device can be adapted to different operating modes become. Advantageously, the cam carrier and the cam pair are in one piece executed.
Ferner wird vorgeschlagen, dass zumindest ein Nockenwellenelement axial verschiebbar angeordnet ist. Dadurch lässt sich einfach eine Hubumschaltung realisieren. Die Richtungsangabe „axial" soll hier und im Folgenden, soweit nicht anders explizit genannt, insbesondere in Bezug auf eine Rotationsachse der Ventiltriebvorrichtung bzw. des Nockenwellenelements, d. h. parallel zu der Rotationsachse verstanden werden.Further It is proposed that at least one camshaft element axially slidably arranged. This makes it easy to change the stroke realize. The direction "axial" is here and below, as far as not explicitly stated otherwise, in particular with respect to a rotation axis the valve drive device or the camshaft element, d. H. be understood parallel to the axis of rotation.
Weiter wird vorgeschlagen, dass die Ventiltriebvorrichtung eine Verstellvorrichtung mit zumindest einer Kulissenbahn aufweist, die dazu vorgesehen ist, das Nockenwellenelement axial zu verschieben. Mittels einer Kulissenbahn kann eine einfache Verstellvorrichtung für die axiale Verschiebung der Nockenwellenelemente bereitgestellt werden.Further It is proposed that the valve drive device an adjusting device having at least one slide track, which is intended to move the camshaft element axially. By means of a slide track can be a simple adjustment for the axial displacement of the camshaft elements to be provided.
Vorteilhaferweise sind beide Nockenwellenelemente verschiebbar angeordnet, wodurch eine besonders vorteilhafte Hubumschaltung aller Zylinder erreicht werden kann. Besonders vorteilhaft ist es, wenn die Verstellvorrichtung dazu vorgesehen ist, beide Nockenwellenelemente zu verschieben.Advantage oats way Both camshaft elements are slidably disposed, whereby achieved a particularly advantageous Hubumschaltung all cylinders can be. It is particularly advantageous if the adjusting device is provided to move both camshaft elements.
In einer besonders vorteilhaften Ausgestaltung der Erfindung wird vorgeschlagen, dass die Ventiltriebvorrichtung zumindest eine Querschnittsebene aufweist, die beide Nockenwellenelemente und die Kulissenbahn umfasst. Unter einer Querschnittsebene soll insbesondere eine Ebene senkrecht zur Rotationsachse der Ventiltriebvorrichtung verstanden werden. Dadurch kann eine Verstellvorrichtung für beide Nockenwellenelemente besonders einfach realisiert werden.In A particularly advantageous embodiment of the invention is proposed the valve drive device has at least one cross-sectional plane, comprising both camshaft elements and the slide track. Under a cross-sectional plane is intended in particular a plane perpendicular to Rotation axis of the valve drive device to be understood. Thereby can be an adjusting device for both Camshaft elements are particularly easy to implement.
Ferner wird vorgeschlagen, dass die Kopplungsvorrichtung ein Verbindungselement aufweist, das dazu vorgesehen ist, das Antriebsmoment weiterzuleiten. Dadurch kann der erste Nockenträger vorteilhaft mit dem zweiten Nockenträger verbunden werden.Further It is proposed that the coupling device is a connecting element has, which is intended to forward the drive torque. As a result, the first cam carrier can be advantageous with the second cam carrier get connected.
Vorzugsweise weist zumindest eines der Nockenwellenelemente zumindest einen Schiebesitz auf, der dazu vorgesehen ist, die axial verschiebbare drehfeste Kopplung bereitzustellen. Dadurch kann einfach eine axiale Verschiebung der Nockenträger realisiert werden und das Nockenwellenelement einfach mit der Antriebswelle bzw. dem Verbindungselement verbunden werden, wobei die Antriebswelle bzw. das Verbindungselement vorzugsweise komplementär zu dem Schiebesitz des Nockenwellenelements ausgeführt sind.Preferably at least one of the camshaft elements has at least one sliding fit, which is intended to, the axially displaceable rotationally fixed coupling provide. This can simply axial displacement of the Cam carrier realized and the camshaft member easily with the drive shaft or the connecting element to be connected, wherein the drive shaft or the connecting element preferably complementary to the sliding seat of the camshaft member accomplished are.
Ist der Schiebesitz profiliert ausgeführt, kann einfach eine axial verschiebbare, drehfeste Verbindung realisiert werden.is The sliding seat profiled executed, can easily be an axial slidable, non-rotatable connection can be realized.
Als profilierte Schiebesitze sind beispielsweise Schiebesitze mit einem Keilprofil, einem Vielzahlprofil oder einem Polygonprofil denkbar.When profiled sliding seats are for example sliding seats with a Wedge profile, a multi-profile or a polygon profile conceivable.
Vorteilhafterweise nimmt der Schiebesitz in axialer Richtung maximal 50% des Nockenwellenelements ein. Dadurch kann eine Klemmneigung für die axiale Verschiebung reduziert werden, insbesondere in Verbindung mit der hohen Torsionssteifigkeit der Ventiltriebvorrichtung.Advantageously, the sliding seat occupies a maximum of 50% of the camshaft element in the axial direction. As a result, a clamping tendency for the axial displacement can be reduced, in particular in conjunction with the high torsional stiffness of the valve drive device.
Ferner wird vorgeschlagen, dass die Ventiltriebvorrichtung eine Antriebswelle aufweist, die axial verschiebbar drehfest mit dem ersten Nockenwellenelement verbunden ist. Dadurch kann das Antriebsmoment einfach in die Ventiltriebvorrichtung eingeleitet werden.Further It is proposed that the valve drive device a drive shaft has, the axially displaceable rotationally fixed to the first camshaft member connected is. This allows the drive torque in the valve drive device easily be initiated.
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:
Das
erste Nockenwellenelement
Die
Nockenpaare
Jedes
Nockenpaar
Um
zwischen den beiden Betriebsmodi zu wechseln, sind die beiden Nockenwellenelemente
Das
Verbindungselement
Um
die Nockenwellenelemente
Um
die axial verschiebbare drehfeste Kopplung bereitzustellen, sind
die Schiebesitze
Die
Antriebswelle
Claims (13)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200710052251 DE102007052251A1 (en) | 2007-11-02 | 2007-11-02 | Valve drive device |
| PCT/EP2008/008784 WO2009056237A1 (en) | 2007-11-02 | 2008-10-16 | Valve driving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE200710052251 DE102007052251A1 (en) | 2007-11-02 | 2007-11-02 | Valve drive device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE102007052251A1 true DE102007052251A1 (en) | 2009-05-07 |
Family
ID=40383680
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE200710052251 Withdrawn DE102007052251A1 (en) | 2007-11-02 | 2007-11-02 | Valve drive device |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE102007052251A1 (en) |
| WO (1) | WO2009056237A1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012110069A1 (en) * | 2011-02-17 | 2012-08-23 | Daimler Ag | Camshaft with axially movable cam elements |
| DE102015122051A1 (en) | 2015-12-17 | 2017-06-22 | Thyssenkrupp Ag | camshafts module |
| DE102016007886A1 (en) * | 2016-06-29 | 2018-01-04 | Audi Ag | Valve train for an internal combustion engine and method for producing a valve train |
| DE102019101518A1 (en) | 2019-01-22 | 2020-07-23 | Thyssenkrupp Ag | Camshaft, internal combustion engine and motor vehicle |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BR112012001247A2 (en) | 2009-07-21 | 2016-02-10 | Neumayer Tekfor Holding Gmbh | camshaft and corresponding production process |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1512034A (en) * | 1923-07-09 | 1924-10-21 | Samuel W Luitwieler | Cam and spindle construction |
| DE647163C (en) * | 1936-05-23 | 1937-07-05 | Fried Krupp Germaniawerft Akt | Divided control camshaft |
| CH443785A (en) * | 1966-09-13 | 1967-09-15 | Motosacoche Sa | Camshaft |
| DE2300827A1 (en) * | 1973-01-09 | 1974-07-11 | Keller Edmund | VALVE ACTUATION SYSTEM OF A PISTON INTERNAL ENGINE |
| AT382933B (en) * | 1984-03-14 | 1987-04-27 | Weichsler Hermann | VALVE ACTUATION FOR LIFTING PISTON - INTERNAL COMBUSTION ENGINES |
| JPS612970A (en) * | 1984-06-18 | 1986-01-08 | Ngk Insulators Ltd | Engine camshaft |
| DE19618189A1 (en) * | 1995-05-12 | 1996-11-14 | Volkswagen Ag | Gas valve cut=off system via camshaft and coupling |
| DE19544412C1 (en) * | 1995-08-09 | 1997-04-10 | Erwin Korostenski | Valve actuation, especially by camshaft, in internal combustion engine |
| DE10148177B4 (en) * | 2001-09-28 | 2015-05-13 | Schaeffler Technologies AG & Co. KG | Valve train with valve lift switching for the gas exchange valves of a 4-stroke internal combustion engine |
| DE102004011586A1 (en) * | 2003-03-21 | 2004-10-07 | Audi Ag | Valve train of an internal combustion engine having a cylinder head |
| DE102004002301A1 (en) * | 2004-01-16 | 2005-08-11 | Audi Ag | Process to manufacture an automotive camshaft by application of a sleeve-fit extension to main camshaft section |
| DE202005021511U1 (en) * | 2005-06-06 | 2008-07-10 | Siemens Aktiengesellschaft | Shaft, in particular camshaft |
-
2007
- 2007-11-02 DE DE200710052251 patent/DE102007052251A1/en not_active Withdrawn
-
2008
- 2008-10-16 WO PCT/EP2008/008784 patent/WO2009056237A1/en not_active Ceased
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012110069A1 (en) * | 2011-02-17 | 2012-08-23 | Daimler Ag | Camshaft with axially movable cam elements |
| US8997706B2 (en) | 2011-02-17 | 2015-04-07 | Daimler Ag | Internal combustion engine valve actuation control arrangement |
| DE102015122051A1 (en) | 2015-12-17 | 2017-06-22 | Thyssenkrupp Ag | camshafts module |
| DE102016007886A1 (en) * | 2016-06-29 | 2018-01-04 | Audi Ag | Valve train for an internal combustion engine and method for producing a valve train |
| WO2018001867A1 (en) | 2016-06-29 | 2018-01-04 | Audi Ag | Valve train for an internal combustion engine, and method for producing a valve train |
| DE102016007886B4 (en) | 2016-06-29 | 2020-01-09 | Audi Ag | Valve train for an internal combustion engine and method for producing a valve train |
| DE102019101518A1 (en) | 2019-01-22 | 2020-07-23 | Thyssenkrupp Ag | Camshaft, internal combustion engine and motor vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009056237A1 (en) | 2009-05-07 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| R012 | Request for examination validly filed |
Effective date: 20140625 |
|
| R081 | Change of applicant/patentee |
Owner name: MERCEDES-BENZ GROUP AG, DE Free format text: FORMER OWNER: DAIMLER AG, 70327 STUTTGART, DE Owner name: DAIMLER AG, DE Free format text: FORMER OWNER: DAIMLER AG, 70327 STUTTGART, DE |
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| R081 | Change of applicant/patentee |
Owner name: MERCEDES-BENZ GROUP AG, DE Free format text: FORMER OWNER: DAIMLER AG, STUTTGART, DE |
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| R120 | Application withdrawn or ip right abandoned |