DE102011075537A1 - Reciprocating internal combustion engine with camshaft adjusting device - Google Patents
Reciprocating internal combustion engine with camshaft adjusting device Download PDFInfo
- Publication number
- DE102011075537A1 DE102011075537A1 DE201110075537 DE102011075537A DE102011075537A1 DE 102011075537 A1 DE102011075537 A1 DE 102011075537A1 DE 201110075537 DE201110075537 DE 201110075537 DE 102011075537 A DE102011075537 A DE 102011075537A DE 102011075537 A1 DE102011075537 A1 DE 102011075537A1
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- Germany
- Prior art keywords
- camshaft
- combustion engine
- internal combustion
- reciprocating internal
- pressure medium
- 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.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
- F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
- F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
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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
- 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
- F01L1/34—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
- F01L2001/34423—Details relating to the hydraulic feeding circuit
- F01L2001/34446—Fluid accumulators for the feeding circuit
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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
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Hubkolbenbrennkraftmaschine (1) nach dem Vier-Takt-Verfahren mit einem Kurbelgehäuse, in dem zumindest ein Zylinder (4) und ein Kolben (3) angeordnet sind, wobei der Kolben (3) mittels eines mit einer Kurbelwelle (2) verbundenen Pleuels geführt ist, mit zumindest einem den Zylinder (4) verschließenden Zylinderkopf, dessen Ein- und Auslasskanäle von zumindest je einem als Ein- (8) und Auslassventil (9) ausgebildeten Gaswechselventil beherrscht sind, die durch Nocken (22, 23) zumindest einer Nockenwelle (6, 7) und von diesen angetriebenen Übertragungselementen betätigbar sind, wobei im Antrieb zumindest einer der Nockenwellen (6 oder 7) eine Drehwinkelverstelleinrichtung (10) vorgesehen ist, die von einer Druckmittelquelle mittels eines Steuerventils mit Druckmittel beaufschlagt ist, und wobei die Druckmittelquelle mit einem in einem Hohlraum der Nockenwelle (6 oder 7) angeordneten Druckspeicher (19) in Wirkverbindung steht, der einen einerseits mit dem Druckmittel und andererseits mit einer gehäusefest abgestützten Druckfeder (13) in Wirkverbindung stehenden Speicherkolben (12) aufweist, wobei die Nocken (22, 23) als Schiebenocken mit zumindest zwei Nocken (22, 23) pro Schiebenockeneinheit (21) ausgebildet sind, die auf der Nockenwelle (6 oder 7) drehfest aber axial verschiebbar angeordnet sind, wobei zumindest eine, zumindest einen ausfahrbaren Aktorstift (27 oder 28) aufweisende elektromagnetisch betätigbare Vorrichtung zur Verstellung der Schiebenocken in unterschiedliche axiale Positionen mittels mit dem Aktorstift (27 oder 28) zusammenwirkenden Verschiebenuten (24) am Umfang der Schiebenockeneinheit (21) vorgesehen ist, wobei die Verstellvorrichtung (26) ortsfest an einem Bauteil der Brennkraftmaschine angeordnet ist, und dass eine Vorrichtung zur Fixierung der Schiebenocken in den unterschiedlichen Positionen vorgesehen ist.Reciprocating piston internal combustion engine (1) according to the four-stroke method with a crankcase in which at least one cylinder (4) and a piston (3) are arranged, the piston (3) being guided by means of a connecting rod connected to a crankshaft (2) , with at least one cylinder head that closes the cylinder (4), the inlet and outlet channels of which are controlled by at least one gas exchange valve designed as an inlet (8) and an outlet valve (9), which are controlled by cams (22, 23) of at least one camshaft (6 , 7) and driven by these transmission elements, wherein in the drive at least one of the camshafts (6 or 7) a rotation angle adjustment device (10) is provided, which is acted upon by a pressure medium source by means of a control valve with pressure medium, and wherein the pressure medium source with a a cavity of the camshaft (6 or 7) arranged pressure accumulator (19) is operatively connected, on the one hand with the pressure medium and on the other has a working piston (12) which is supported by a compression spring (13) fixed to the housing, the cams (22, 23) being designed as sliding cams with at least two cams (22, 23) per sliding cam unit (21), which are mounted on the camshaft (6 or 7) are arranged in a rotationally fixed but axially displaceable manner, at least one, at least one, extendable actuator pin (27 or 28) having electromagnetically actuated device for adjusting the sliding cams in different axial positions by means of sliding grooves (24) interacting with the actuator pin (27 or 28) The circumference of the sliding cam unit (21) is provided, the adjusting device (26) being arranged in a fixed position on a component of the internal combustion engine, and a device for fixing the sliding cam in the different positions being provided.
Description
Gebiet der ErfindungField of the invention
Hubkolbenbrennkraftmaschine nach dem Vier-Takt-Verfahren mit einem Kurbelgehäuse, in dem zumindest ein Zylinder und ein Kolben angeordnet sind, wobei der Kolben mittels eines mit einer Kurbelwelle verbundenen Pleuels geführt ist, mit zumindest einem den Zylinder verschließenden Zylinderkopf, dessen Ein- und Auslasskanäle von zumindest je einem als Ein- und Auslassventil ausgebildeten Gaswechselventil beherrscht sind, die durch Nocken zumindest einer Nockenwelle und von diesen angetriebenen Übertragungselementen betätigbar sind, wobei im Antrieb zumindest einer der Nockenwellen eine Drehwinkelverstelleinrichtung vorgesehen ist, die von einer Druckmittelquelle mittels eines Steuerventils mit Druckmittel beaufschlagbar ist, und wobei die Druckmittelquelle mit einem in einem Hohlraum der Nockenwelle angeordneten Druckspeicher in Wirkverbindung steht, der einen einerseits mit dem Druckmittel und andererseits mit einer gehäusefest abgestützten Druckfeder in Wirkverbindung stehenden Speicherkolben aufweist.Reciprocating internal combustion engine according to the four-stroke method with a crankcase, in which at least one cylinder and a piston are arranged, wherein the piston is guided by means of a connecting rod connected to a crankshaft, with at least one cylinder head closing the cylinder, the inlet and outlet ports of at least each designed as an inlet and outlet valve gas exchange valve are controlled by cams at least one camshaft and driven by these transmission elements, wherein in the drive at least one of the camshaft Drehwinkelverstelleinrichtung is provided, which is acted upon by a pressure medium source by means of a control valve with pressure medium , And wherein the pressure medium source is operatively connected to an arranged in a cavity of the camshaft pressure accumulator, which is connected on the one hand with the pressure medium and on the other hand with a housing fixedly supported spring in operative connection S having a poppet piston.
Hintergrund der ErfindungBackground of the invention
Eine derartige Hubkolbenbrennkraftmaschine mit Drehwinkelverstelleinrichtung ist aus der
Aufgabe der ErfindungObject of the invention
Aufgabe der Erfindung ist es daher, eine Hubkolbenbrennkraftmaschine und insbesondere den Ventiltrieb so zu verbessern, dass auch eine Verstellung des Hubes der Gaswechselventile während des Betriebs der Hubkolbenbrennkraftmaschine möglich und vorgesehen ist. Es soll daher eine Verbesserung dahingehend vorgenommen werden, dass mit einfachen Mitteln ein Ventiltrieb zur Verfügung gestellt wird, der einem voll variablem Ventiltriebsystem möglichst nahe kommt. The object of the invention is therefore to improve a reciprocating internal combustion engine and in particular the valve train so that an adjustment of the stroke of the gas exchange valves during operation of the reciprocating internal combustion engine is possible and provided. It is therefore an improvement be made to the effect that with simple means a valve train is provided, which comes as close as possible to a fully variable valve train system.
Zusammenfassung der ErfindungSummary of the invention
Die Aufgabe der Erfindung wird dadurch gelöst, dass die Nocken als Schiebenocken mit zumindest zwei Nocken pro Schiebenockeneinheit ausgebildet sind, die auf der Nockenwelle drehfest aber axial verschiebbar angeordnet sind, dass pro Schiebenockeneinheit eine, zumindest einen ausfahrbaren Aktorstift aufweisende elektromagnetisch betätigbare Vorrichtung zur Verstellung der Schiebenocken in unterschiedliche axiale Positionen mittels mit dem Aktorstift zusammenwirkenden Verschiebenuten am Umfang der Schiebenockeneinheit eingebaut ist, wobei die Verstellvorrichtung ortsfest an einem Bauteil der Brennkraftmaschine angeordnet ist, und dass eine Vorrichtung zur Fixierung der Schiebenocken in den unterschiedlichen Positionen vorgesehen ist, die zumindest je eine der axialen Position zugeordnete Ausnehmung aufweist.The object of the invention is achieved in that the cams are designed as sliding cam with at least two cams per sliding cam unit, which are arranged on the camshaft rotatably but axially displaceable, that per sliding cam unit, at least one extendable Aktorstift having electromagnetically actuated device for adjusting the sliding cam is installed in different axial positions by means of cooperating with the Aktorstift Verschiebenuten on the circumference of the sliding cam unit, wherein the adjusting device is fixedly arranged on a component of the internal combustion engine, and that a device for fixing the sliding cam in the different positions is provided, at least one of the axial Having position assigned recess.
Die Betätigung der Verstellvorrichtung kann entweder elektromagnetisch oder pneumatisch oder hydraulisch oder auch kombiniert, z. B. elektrohydraulisch vorgenommen werden.The actuation of the adjusting device can either electromagnetic or pneumatic or hydraulic or combined, for. B. be made electro-hydraulically.
Ein derartiges Schiebenockensystem ist aus der
Bei diesem Schiebenockensystem wird davon ausgegangen, dass sowohl unterschiedliche Hübe für die Gaswechselventile als auch unterschiedliche Lagen der Nocken bezüglich der Nockenwelle zur Verstellung der Steuerzeiten durch die Schiebenockeneinheiten zur Verfügung stehen. Dies führt jedoch zu kaum mehr zu beherrschenden Einzelnocken und deren Verschiebung.In this sliding cam system it is assumed that different strokes for the gas exchange valves as well as different positions of the cam with respect to the camshaft are available for adjusting the timing by the shift cam units. However, this leads to hardly more dominant individual cams and their displacement.
Erfindungsgemäß wird daher zur Erreichung einer einem voll variablen Ventiltriebsystem möglichst nahekommenden Gaswechselventilverstellung eine getrennte Drehwinkelverstellung als Steuerzeitenvariation und eine getrennte Hubverstellung vorgenommen.According to the invention, therefore, a separate rotational angle adjustment as a timing variation and a separate stroke adjustment are made in order to achieve a gas exchange valve adjustment which is as close as possible to a fully variable valve train system.
In weiterer Ausgestaltung der Erfindung wird vorgeschlagen, dass die Ausnehmungen zur Arretierung der Schiebenockeneinheit in den unterschiedlichen Positionen als Arretiernuten am Umfang der Schiebenocken ausgebildet sind und der Ein- und der Ausfahrbereich der Verschiebenuten in den Ebenen zweier benachbarter Arretiernuten liegen. Dadurch kann die Arretiereinrichtung mit federbelasteten Arretierkörpern entfallen.In a further embodiment of the invention, it is proposed that the recesses for locking the sliding cam unit are formed in the different positions as locking grooves on the circumference of the sliding cam and the input and the extension of the sliding grooves lie in the planes of two adjacent locking grooves. As a result, the locking device can be omitted with spring-loaded locking bodies.
Dabei sind die Verschiebenuten in einem gegenüber den Arretiernuten tiefer liegenden Umfangsbereich der Verschiebenuten angeordnet, was zu einer optimalen Raumausnutzung führt. Die Aktorstifte stehen dabei in einer Basisstellung mit den Arretiernuten in Wirkverbindung und in einer Ausfahrstufe mit den Verschiebenuten, so dass die Arretier- und die Verschiebenuten in dergleichen Radialebene der Nockenwelle liegen. Die Arretiernuten sind dabei durch scheibenförmige Führungskonturen gebildet. Dadurch kann die Verstelleinrichtung Arretierelemente aufweisen, die als Hülsen ausgebildet und feststehenden ausgeführt sind, wobei die Arretierelemente die Aktorstifte umschließen. In this case, the displacement grooves are arranged in a relation to the locking grooves deeper peripheral region of the sliding grooves, resulting in an optimal use of space. The Aktorstifte stand in a basic position with the locking grooves in operative connection and in a Ausfahrstufe with the sliding grooves, so that the locking and the sliding grooves lie in the same radial plane of the camshaft. The locking grooves are formed by disc-shaped guide contours. As a result, the adjusting device may comprise locking elements, which are designed as sleeves and fixed, wherein the locking elements enclose the Aktorstifte.
In weiterer Ausgestaltung der Erfindung wird vorgeschlagen, dass der Druckspeicher ein Kartuschengehäuse aufweist, das mittels zumindest einer dem Druckmittelzu- und -abfluss benachbarten Konusabstützung am Hohlraum der Nockenwelle geführt ist. Dadurch ergibt sich trotz Mantelführung des Kartuschengehäuses in dem zylindrischen Hohlraum der Nockenwelle, die als zentrale Bohrung ausgeführt sein kann, eine optimale Zentrierung, die sowohl an dem Ende zum Druckmittelzu- und -abfluss, als auch an dem anderen Ende des Kartuschengehäuses ausgeführt sein kann. In a further embodiment of the invention it is proposed that the pressure accumulator has a cartridge housing, which is guided by means of at least one of the Druckmittelzu- and adjacent flow cone support on the cavity of the camshaft. This results in spite of jacket guide of the cartridge housing in the cylindrical cavity of the camshaft, which can be designed as a central bore, an optimal centering, which can be performed both at the end to Druckmittelzu- and outflow, as well as at the other end of the cartridge housing.
Der Druckspeicher ist an dem der Konusabstützung abgewandten Ende an einem Verschlussstopfen abgestützt, der im Hohlraum der Nockenwelle fixiert ist. Diese Fixierung kann beispielsweise über eine Presspassung des Verschlussstopfens im Hohlraum erfolgen. Der Verschlussstopfen kann dabei dem Druckspeicher bzw. Kartuschengehäuse zugewandten Ende ebenfalls eine Konusabstützung aufweisen. The pressure accumulator is supported at the end remote from the cone support on a sealing plug, which is fixed in the cavity of the camshaft. This fixation can be done for example via a press fit of the sealing plug in the cavity. The closure plug can also have a cone support for the pressure reservoir or cartridge housing end.
Da verschiedene Bauarten von Drehwinkelverstelleinrichtungen, z.B. mittels einer innen und außen schräg verzahnten Hülse, bekannt sind, wird vorgeschlagen, dass die Drehwinkelverstelleinrichtung eine Flügelzellennabe aufweist, die mit der Nockenwelle fest verbunden ist und von einem mit der Kurbelwelle drehverbundenen Gehäuse umschlossen ist und mit diesem Kammern bildet, deren durch das Druckmittel verursachten Volumenänderungen eine Drehwinkelverstellung der Nockenwellen bewirkt.Since various types of rotational angle adjusting devices, e.g. are known by means of an internally and externally helical sleeve, it is proposed that the Drehwinkelverstelleinrichtung has a vane cell hub which is fixedly connected to the camshaft and is surrounded by a rotatably connected to the crankshaft housing and forms with this chambers, which caused by the pressure medium Volume changes causes a rotational angle adjustment of the camshafts.
Das die Drehwinkelverstelleinrichtung beherrschende Steuerventil ist als Zentralventil ausgebildet und in einer zentrischen Öffnung der Nockenwelle und/oder der Drehwinkelverstelleinrichtung angeordnet.The control valve controlling the rotational angle adjustment device is designed as a central valve and arranged in a centric opening of the camshaft and / or the rotational angle adjustment device.
Kurze Beschreibung der ZeichnungenBrief description of the drawings
Zur weiteren Erläuterung der Erfindung wird auf die Zeichnungen verwiesen, in denen ein Ausführungsbeispiel der Erfindung vereinfacht dargestellt ist.For further explanation of the invention reference is made to the drawings, in which an embodiment of the invention is shown in simplified form.
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Detaillierte Beschreibung der ZeichnungenDetailed description of the drawings
In
In den
Die Verschiebe-
Durch Aktivieren der Verstelleinrichtungen
Zwischen den Außenverzahnungen
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Hubkolbenbrennkraftmaschine reciprocating internal combustion engine
- 22
- Kurbelwelle crankshaft
- 33
- Kolben piston
- 44
- Zylinder cylinder
- 55
- Zugmitteltriebe flexible drives
- 66
- Einlassnockenwelle intake camshaft
- 77
- Auslassnockenwelle exhaust
- 88th
- Einlassventil intake valve
- 99
- Auslassventil outlet valve
- 1010
- Drehwinkelverstelleinrichtungen Drehwinkelverstelleinrichtungen
- 1111
- Kartuschengehäuse cartridge housing
- 1212
- Speicherkolben accumulator piston
- 1313
- Druckfeder compression spring
- 1414
- Konusabstützung cone support
- 1515
- Verschlussstopfen sealing plug
- 1616
- zentrale Bohrung central hole
- 1717
- Anschlagflansche stop flanges
- 1818
- Radialbohrungen radial bores
- 1919
- Druckspeicher accumulator
- 2020
- Außenverzahnung external teeth
- 2121
- Schiebenockeneinheiten Sliding cam units
- 22, 2322, 23
- Nocken cam
- 2424
- Verschiebenuten displacement grooves
- 2525
- Arretiernuten locking grooves
- 2626
- Verstelleinrichtungen adjustment
- 27, 2827, 28
- Aktorstifte Aktorstifte
- 2929
- Lagerstellen bearings
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- DE 102009034804 A1 [0002] DE 102009034804 A1 [0002]
- EP 0798451 A1 [0006] EP 0798451 A1 [0006]
Claims (10)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
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DE201110075537 DE102011075537A1 (en) | 2011-05-10 | 2011-05-10 | Reciprocating internal combustion engine with camshaft adjusting device |
PCT/EP2012/052182 WO2012152456A1 (en) | 2011-05-10 | 2012-02-09 | Reciprocating internal combustion engine with camshaft adjusting device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201110075537 DE102011075537A1 (en) | 2011-05-10 | 2011-05-10 | Reciprocating internal combustion engine with camshaft adjusting device |
Publications (1)
Publication Number | Publication Date |
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DE102011075537A1 true DE102011075537A1 (en) | 2012-11-15 |
Family
ID=45614832
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE201110075537 Withdrawn DE102011075537A1 (en) | 2011-05-10 | 2011-05-10 | Reciprocating internal combustion engine with camshaft adjusting device |
Country Status (2)
Country | Link |
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DE (1) | DE102011075537A1 (en) |
WO (1) | WO2012152456A1 (en) |
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CN108843421A (en) * | 2018-06-19 | 2018-11-20 | 浙江吉利控股集团有限公司 | Variable air valve lift apparatus and its control method |
DE102017004782A1 (en) * | 2017-05-18 | 2018-11-22 | Man Truck & Bus Ag | Method for operating an internal combustion engine and device for this purpose |
DE102017004819A1 (en) * | 2017-05-18 | 2018-11-22 | Man Truck & Bus Ag | Operating method for a driver assistance system and motor vehicle |
CN108868946A (en) * | 2018-06-19 | 2018-11-23 | 浙江吉利控股集团有限公司 | Lift range variable regulating device |
CN108894846A (en) * | 2018-06-19 | 2018-11-27 | 浙江吉利控股集团有限公司 | Displaceable member and variable air valve lift apparatus |
CN108894845A (en) * | 2018-06-19 | 2018-11-27 | 浙江吉利控股集团有限公司 | Four valve variable air valve lift range mechanisms and its control method |
DE102017120145A1 (en) * | 2017-09-01 | 2019-03-07 | Man Truck & Bus Ag | Sliding cam system |
CN110374711A (en) * | 2019-05-09 | 2019-10-25 | 杰锋汽车动力系统股份有限公司 | A kind of three-level variable air valve lift range mechanism for internal combustion engine |
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DE102013018263A1 (en) * | 2013-10-30 | 2015-04-30 | Avl Deutschland Gmbh | Method and arrangement for monitoring an actuator device |
DE102014108927A1 (en) * | 2014-06-25 | 2015-12-31 | Eto Magnetic Gmbh | Device for adjusting the camshaft of an internal combustion engine |
DE102016200325A1 (en) * | 2016-01-14 | 2017-07-20 | Bayerische Motoren Werke Aktiengesellschaft | Valve train for an internal combustion engine |
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EP0798451A1 (en) | 1996-03-25 | 1997-10-01 | Dr.Ing.h.c. F. Porsche Aktiengesellschaft | Valve control of an internal combustion engine |
DE102009034804A1 (en) | 2009-07-25 | 2011-01-27 | Schaeffler Technologies Gmbh & Co. Kg | Accumulator i.e. spring accumulator, for supporting pressuring agent supply of cam shaft adjuster of internal-combustion engine, has spring supported at stop and at piston, and stop formed to guiding section and connected with section |
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