DE102004021375A1 - Valve operating mechanism of internal combustion engine has one cam shaft, on which axially adjustable cam carrier is arranged, whereby cam shaft is supported by bearing block, which has thrust bearing impact surfaces on both of its sides - Google Patents
Valve operating mechanism of internal combustion engine has one cam shaft, on which axially adjustable cam carrier is arranged, whereby cam shaft is supported by bearing block, which has thrust bearing impact surfaces on both of its sides Download PDFInfo
- Publication number
- DE102004021375A1 DE102004021375A1 DE200410021375 DE102004021375A DE102004021375A1 DE 102004021375 A1 DE102004021375 A1 DE 102004021375A1 DE 200410021375 DE200410021375 DE 200410021375 DE 102004021375 A DE102004021375 A DE 102004021375A DE 102004021375 A1 DE102004021375 A1 DE 102004021375A1
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- Germany
- Prior art keywords
- cam carrier
- internal combustion
- cam
- gear according
- combustion engine
- 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.)
- Granted
Links
- 238000002485 combustion reaction Methods 0.000 title claims description 23
- 239000000314 lubricant Substances 0.000 claims description 23
- 230000007704 transition Effects 0.000 claims description 8
- 230000013011 mating Effects 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 2
- 238000006073 displacement reaction Methods 0.000 description 6
- 239000000463 material Substances 0.000 description 5
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 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
- 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
- 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
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
Die Erfindung betrifft den Ventiltrieb einer Brennkraftmaschine mit mindestens einer Nockenwelle gemäß dem Oberbegriff des Patentanspruches 1.The Invention relates to the valve train of an internal combustion engine with at least one camshaft according to the preamble of claim 1.
Zur Verbesserung der thermodynamischen Eigenschaften von Brennkraftmaschinen sind mechanische Vorrichtungen bekannt, die das Arbeitsspiel des Ventiltriebes beeinflussen und beispielsweise eine drehzahlabhängige Veränderung der Öffnungszeiten oder des Hubes der Gaswechselventile ermöglichen.to Improvement of the thermodynamic properties of internal combustion engines are known mechanical devices that the working cycle of the Valve drive affect and, for example, a speed-dependent change the opening hours or the stroke of the gas exchange valves allow.
Aus
der Druckschrift
Aus
der Druckschrift
Zudem ist in der Druckschrift beschrieben, dass auf dem Nockenträger zum Betätigen zweier einlassseitigen Gaswechselventile eines Zylinders zwei Nocken angeordnet sind, wobei die zwei Nocken jeweils zwei Kurvenbahnen aufweisen. Die Nockenwelle und ein Nockenträger sind dabei durch einen Lagerblock gelagert, der den Nockenträger zwischen den zwei Nocken umfasst.moreover is described in the document that on the cam carrier to Actuate two inlet-side gas exchange valves of a cylinder two cams are arranged, wherein the two cams each have two curved paths exhibit. The camshaft and a cam carrier are by a Bearing block that supports the cam carrier between the two cams includes.
Der Erfindung liegt die Aufgabe zugrunde den Ventiltrieb einer Brennkraftmaschine gemäß dem Oberbegriff des Patentanspruches 1 anzugeben, bei dem die Lagerung der Nockenwelle und des Nockenträgers verbessert ausgebildet ist, wobei insbesondere Verschleißerscheinungen beim Betrieb des Ventiltriebes vermieden werden.Of the Invention is the object of the valve train of an internal combustion engine according to the generic term specify of the claim 1, wherein the storage of the camshaft and the cam carrier is formed improved, in particular wear and tear be avoided during operation of the valve train.
Diese Aufgabe wird erfindungsgemäß durch das Merkmal im Kennzeichen des Patentanspruchs 1 gelöst, wonach auf beiden Seiten des Lagerblocks eine ein Axiallager bildende Anschlagsfläche ausgebildet ist.These The object is achieved by the Feature solved in the characterizing part of claim 1, according to which on both sides formed of the bearing block a thrust bearing forming a thrust bearing is.
In einer vorteilhaften Weiterbildung der Erfindung ist vorgesehen, dass auf dem mindestens einen Nockenträger mindestens zwei Nocken angeordnet sind, wobei der den Nockenträger umfassende Lagerblock vorteilhaft zwischen den zwei Nocken angeordnet ist. Dabei bilden die inneren Seitenflächen der zwei Nocken die Gegenflächen für die zwei Anschlagsflächen des Axiallagers.In an advantageous embodiment of the invention is provided that on the at least one cam carrier at least two cams are arranged, wherein the cam carrier comprehensive bearing block advantageous is arranged between the two cams. This form the inner faces the two cams the mating surfaces for the two stop surfaces of the thrust bearing.
Während ein Nockenträger vorzugsweise aus einer Stahllegierung gefertigt wird, wird der Lagerblock aus einem Gussmaterial, beispielsweise Aluminiumguss, gefertigt. Dadurch ist es notwendig, dass die zwei das weichere Material aufweisenden Anschlagsflächen des Axiallagers einen kleineren Durchmesser aufweisen als die das härtere Material aufweisenden inneren Seitenflächen der zwei Nocken des Nockenträgers. Somit wird ein Einschleifen des härteren Materials in das weichere Material mit der Folge einer Kontaktflächenzunahme vermieden, durch welche es zu einem verstärkten Reiben und sogar zu einem Kleben des Nockenträgers an dem Lagerblock kommen könnte.While a cam support is preferably made of a steel alloy, the bearing block made of a cast material, such as cast aluminum. This makes it necessary that the two stop surfaces of the softer material have the Axial bearings have a smaller diameter than those having the harder material inner side surfaces the two cams of the cam carrier. Thus, a grinding of the harder material into the softer Material with the consequence of a contact surface increase avoided by which strengthened it Rubbing and even sticking of the cam carrier come to the bearing block could.
Dabei ist vorgesehen, dass in den zwei Anschlagsflächen des Axiallagers jeweils mindestens eine Schmiermitteltasche ausgebildet ist, in der sich Schmiermittel sammeln kann.there is provided that in the two abutment surfaces of the thrust bearing respectively at least one lubricant pocket is formed, in which lubricant can collect.
Die jeweiligen Schmiermitteltaschen werden entsprechend der Einbaulage der Brennkraftmaschine in der höher gelegenen Hälfte der zwei Anschlagsflächen des Lagerblocks ausgebildet, wodurch ein Abfließen des Schmiermittels aus den Schmiermitteltaschen vermieden wird.The respective lubricant pockets are according to the installation position the internal combustion engine in the higher located halfway the two stop surfaces formed of the bearing block, whereby a flow of the lubricant from the lubricant pockets is avoided.
In einer besonders vorteilhaften Weiterbildung der Erfindung ist vorgesehen, dass in den zwei Anschlagsflächen eines Lagerblocks jeweils zwei Schmiermitteltaschen ausgebildet werden. Diese zwei Schmiermitteltaschen einer An schlagsflächen werden in der höher gelegenen Hälfte des Lagerblocks angeordnet. Dabei weisen die zwei Schmiermitteltaschen gegenüber einer Senkrechten zur Zylinderkopfebene, welche die Nockenwellen radial mittig schneidet, einen Winkel von etwa ±30 Grad bis etwa ±60 Grad auf. Beispielsweise weist die erste Schmiermitteltasche einen Winkel von –45 Grand, die zwei einen Winkel von +45Grad. Dadurch kann die Brennkraftmaschine auch geneigt verbaut werden, wodurch das Schmiermitte aus immer einer Schmiermitteltasche nicht ablaufen kann.In a particularly advantageous embodiment of the invention is provided that in the two stop surfaces a bearing block each formed two lubricant pockets become. These two lubricant pockets will be impact surfaces in the higher located halfway arranged the bearing block. Here are the two lubricant pockets across from a perpendicular to the cylinder head plane, which the camshafts radially centered, an angle of about ± 30 degrees to about ± 60 degrees on. For example, the first lubricant pocket has an angle from -45 Grand, the two an angle of + 45 degrees. This allows the internal combustion engine also be installed inclined, whereby the lubricant from getting out a lubricant bag can not drain.
Die Brennkraftmaschine ist mit einem einen Leiterrahmen tragenden Zylinderkopf ausgebildet. Dadurch wird eine Hälfte des Lagerblocks von dem Zylinderkopf gebildet, während die andere Hälfte des Lagerblocks von dem Leiterrahmen gebildet wird.The internal combustion engine is formed with a cylinder head carrying a ladder frame. As a result, one half of the bearing block is formed by the cylinder head, while the other half of the bearing block is formed by the lead frame.
Dabei sind die zwei Anschlagsflächen des Axiallagers des Lagerblocks an dem Übergang zwischen dem Zylinderkopf und dem Leiterrahmen axial abgeflacht, wodurch das Entstehen eines Vorsprungs zwischen dem Zylinderkopf oder dem Leiterrahmen in der Anschlagsfläche vermieden wird, an dem die inneren Seitenflächen der Nocken des Nockenträgers reiben könnten.there are the two stop surfaces the thrust bearing of the bearing block at the transition between the cylinder head and axially flattened the lead frame, whereby the emergence of a Projection between the cylinder head or the lead frame in the stop surface is avoided, rub against the inner side surfaces of the cam of the cam carrier could.
Entsprechend der Drehrichtung der Nockenwelle braucht nur die Seite der Anschlagsflächenhälfte des Lagerblocks am Übergang zwischen dem Zylinderkopf und dem Leiterrahmen axial abgeflacht werden, auf die sich die Nockenwelle beim Betrieb der Brennkraftmaschine zudreht.Corresponding the direction of rotation of the camshaft needs only the side of the stop surface half of the Storage blocks at the transition be flattened axially between the cylinder head and the lead frame, on which the camshaft during operation of the internal combustion engine missile?.
Für die mindestens zwei Nocken des Nockenträgers ist vorgesehen, dass jeder Nocken mindestens zwei unterschiedliche Nockenlaufbahnen aufweist, wodurch ein Gaswechselventil durch das axiale verschieben des Nockenträgers unterschiedlich betätigt wird.For the least two cams of the cam carrier It is envisaged that each cam at least two different Has cam tracks, whereby a gas exchange valve by the axial move the cam carrier operated differently becomes.
Durch den erfindungsgemäßen Ventiltrieb einer Brennkraftmaschine, bei dem der Lagerblock die Funktion eines Radiallager und eines Axiallagers übernimmt, ist eine zuverlässige Schmiermittelversorgung gewährleistet, wodurch Verschleißerscheinungen durch das axiale verschieben der Nockenträger beim Betrieb der Ventiltriebs vermieden werden.By the valve gear according to the invention an internal combustion engine, wherein the bearing block has the function of a Radial bearing and a thrust bearing takes over, is a reliable lubricant supply guaranteed causing signs of wear by the axial displacement of the cam carrier during operation of the valve train be avoided.
Im folgenden ist ein erfindungsgemäßer Ventiltrieb einer Brennkraftmaschine anhand von einem Ausführungsbeispiel im Zusammenhang mit zwei Figuren dargestellt und erläutert.in the The following is an inventive valve train an internal combustion engine based on an embodiment in connection illustrated and explained with two figures.
Es zeigen:It demonstrate:
Eine vierzylindrige Brennkraftmaschine mit zwei obenliegenden Nockenwellen zum Antrieb eines Kraftfahrzeuges ist mit einer Vorrichtung zum Verstellen des Hubes und der Öffnungszeiten der einlassseitigen Gaswechselventile ausgestattet. Die Vorrichtung besteht aus vier Nockenträgern, die auf der die einlassseitigen Gaswechselventile betätigenden Nockenwelle drehfest und axial verschiebbar angeordnet sind. Dabei ist jedem Nockenträger genau einem Zylinder zugeordnet, wobei jeder Zylinder der Brennkraftmaschine einlassseitig zwei Gaswechselventile aufweist. Entsprechend sind auf jedem Nockenträger zwei Nocken ausgebildet, wobei jeder Nocken ein einlassseitiges Gaswechselventil betätigt. Jeder der zwei Nocken weist jeweils zwei sich unterscheidende Nockenlaufbahnen auf, die aus einem gemeinsamen Grundkreis axial versetzt aus dem Nocken hervorgehen.A four-cylinder internal combustion engine with two overhead camshafts to drive a motor vehicle is equipped with a device for adjusting the stroke and the opening times the inlet-side gas exchange valves equipped. The device consists of four cam carriers, acting on the inlet side gas exchange valves Camshaft rotationally fixed and are arranged axially displaceable. there is every cam carrier assigned to exactly one cylinder, each cylinder of the internal combustion engine On the inlet side has two gas exchange valves. Corresponding on each cam carrier formed two cams, each cam is an inlet side Gas exchange valve actuated. Everyone the two cams each have two differing cam tracks on, the axially offset from a common base circle from the Cams emerge.
Die die Drehfestigkeit bei gleichzeitiger axialer Verschiebbarkeit ermöglichende Verbindung zwischen der Nockenwelle und dem Nockenträger besteht in einer Verzahnung, die auf der Nockenwelle als Außenverzahnung und in dem Nockenträger als Innenverzahnung ausgebildet ist.The the torsional strength with simultaneous axial displacement enabled There is a connection between the camshaft and the cam carrier in a gearing on the camshaft as external gearing and in the cam carrier is designed as internal toothing.
Zum axialen Verschieben ist an beiden Seiten der Nockenträger jeweils ein Schneckentrieb ausgebildet, in dem als Vertiefung eine Kurvenbahn ausgebildet ist. Die Kurvenbahnen der zwei Schneckentriebe eines Nockenträgers sind dabei zueinander spiegelbildlich ausgebildet, wodurch das axiale Verschieben des Nockenträgers in beide Richtung möglich ist.To the axial displacement is on both sides of the cam carrier respectively formed a worm drive, formed in the recess as a curved path is. The cam tracks of the two worm gears of a cam carrier are thereby mirror images of each other, whereby the axial displacement of the cam carrier possible in both directions is.
Das axiale Verschieben der Nockenträger erfolgt durch radial zur Nockenwelle angeordnete Stellglieder, die als elektromagnetische Ventile ausgebildet sind, und die jeweils aus einem Betätigungsstift und aus zwei Elektromagneten bestehen. Die Stellglieder sind fest mit dem Zylinderkopf der Brennkraftmaschine verbunden. Durch die Elektromagneten kann der Betätigungsstift ausgefahren und zurückgezogen werden. Im ausgefahrenen Zustand greift der Betätigungsstift in die die Kurvenbahn bildende Vertiefung eines Schneckentriebes, wobei der Nockenträger durch die Drehung der Nockenwelle beim Betrieb der Brennkraftmaschine axial verschoben wird.The axial displacement of the cam carrier takes place by radially arranged to the camshaft actuators, the are designed as electromagnetic valves, and each from an actuating pin and consist of two electromagnets. The actuators are fixed with connected to the cylinder head of the internal combustion engine. Through the electromagnet can the actuating pin extended and withdrawn become. In the extended state, the actuating pin engages in the curved path forming depression of a worm drive, wherein the cam carrier through the rotation of the camshaft during operation of the internal combustion engine is moved axially.
Die jeweils zwei Nockenlaufbahnen der zwei Nocken eines Nockenträgers sind in der Form unterschiedlich ausgebildet, dass eine Nockenlaufbahn eine kleine Hubhöhe des Gaswechselventils und die andere Nockenlaufbahn eine große Hubhöhe des Gaswechselventils bewirkt. Die Nockenlaufbahn mit der kleinen Hubhöhe wird bei Motordrehzahlen unterhalb 2500 Umdrehungen pro Minute geschaltet, die Nockenlaufbahn mit der großen Hubhöhe wird bei Motordrehzahlen oberhalb 2500 Umdrehungen pro Minute geschaltet.The each two cam tracks of the two cams of a cam carrier are formed differently in the form that a cam track a small lifting height the gas exchange valve and the other cam track a large lifting height of the gas exchange valve causes. The cam track with the small lift height becomes at engine speeds switched below 2500 revolutions per minute, the cam track with the big one Lifting height is switched at engine speeds above 2500 revolutions per minute.
Die
Der
Lagerblock
Der
Nockenträger
Bei
der Brennkraftmaschine bestehen die Lagerblöcke
Dabei
sind die zwei Anschlagsflächen
Entsprechend
der Drehrichtung der Nockenwelle ist jeweils nur die Seite einer
Anschlagsflächenhälfte
Durch den erfindungsgemäßen Ventiltrieb der Brennkraftmaschine mit den als Axiallager ausgebildeten Anschlagsflächen ist ein verschleißarmer Betrieb der Brennkraftmaschine gegeben.By the valve gear of the invention Internal combustion engine with the stop surfaces designed as thrust bearing a low-wear operation given the internal combustion engine.
Claims (11)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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DE200410021375 DE102004021375B4 (en) | 2004-04-30 | 2004-04-30 | Valve gear of an internal combustion engine with at least one camshaft |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200410021375 DE102004021375B4 (en) | 2004-04-30 | 2004-04-30 | Valve gear of an internal combustion engine with at least one camshaft |
Publications (2)
Publication Number | Publication Date |
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DE102004021375A1 true DE102004021375A1 (en) | 2006-01-26 |
DE102004021375B4 DE102004021375B4 (en) | 2015-05-13 |
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DE200410021375 Expired - Lifetime DE102004021375B4 (en) | 2004-04-30 | 2004-04-30 | Valve gear of an internal combustion engine with at least one camshaft |
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DE (1) | DE102004021375B4 (en) |
Cited By (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007010156A1 (en) | 2007-03-02 | 2008-09-04 | Audi Ag | Valve drive unit for a combustion engine comprises an adjusting unit having interacting elements which interact alternately with a curved connecting part |
DE102007010155A1 (en) | 2007-03-02 | 2008-09-04 | Audi Ag | Camshaft for IC engine has two cam followers plus a circular cam which slides axially into the cam bearing for the non operating valve setting |
DE102007042932A1 (en) | 2007-09-08 | 2009-03-12 | Daimler Ag | Brennkraftmotorenventiltriebumschaltvorrichtung |
DE102007052249A1 (en) | 2007-11-02 | 2009-05-07 | Daimler Ag | Brennkraftmotorenventiltriebumschaltvorrichtung |
DE102008024877A1 (en) | 2008-05-23 | 2009-11-26 | Audi Ag | Composite cam shaft for controlling gas shuttle valves of internal-combustion engine, has shaft and multiple torque proof cam elements mounted on shaft |
DE102010022709A1 (en) * | 2010-06-04 | 2011-12-08 | Audi Ag | Valve train for internal combustion engine, has cam carriers and/or cam shaft supported in bearing, and end stop provided for limiting axial shifting of carriers, where end stop is formed as damping element and/or comprises damping element |
WO2012110070A1 (en) | 2011-02-17 | 2012-08-23 | Daimler Ag | Internal combustion engine valve train device |
WO2012110069A1 (en) | 2011-02-17 | 2012-08-23 | Daimler Ag | Camshaft with axially movable cam elements |
DE102011076726A1 (en) | 2011-05-30 | 2012-12-06 | Schaeffler Technologies AG & Co. KG | Valve train for combustion piston engine, has actuating device with rocker arm, which is arranged adjacent to control body in radial manner with axial alignment, where rocker arm is pivoted around tangential axis |
DE102012002893A1 (en) | 2012-02-14 | 2013-08-14 | Daimler Ag | Kraftfahrzeugventiltriebverstellvorrichtung |
CN104847429A (en) * | 2014-02-14 | 2015-08-19 | 通用汽车环球科技运作有限责任公司 | Bi-directional control groove design for engine rotation reversal on engine with sliding camshaft |
US10006319B2 (en) | 2014-10-08 | 2018-06-26 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Cylinder head of an internal combustion engine with at least one camshaft |
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Cited By (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007010155A1 (en) | 2007-03-02 | 2008-09-04 | Audi Ag | Camshaft for IC engine has two cam followers plus a circular cam which slides axially into the cam bearing for the non operating valve setting |
DE102007010156A1 (en) | 2007-03-02 | 2008-09-04 | Audi Ag | Valve drive unit for a combustion engine comprises an adjusting unit having interacting elements which interact alternately with a curved connecting part |
US8307795B2 (en) | 2007-09-08 | 2012-11-13 | Daimler Ag | Internal combustion engine valve drive train switching device |
DE102007042932A1 (en) | 2007-09-08 | 2009-03-12 | Daimler Ag | Brennkraftmotorenventiltriebumschaltvorrichtung |
WO2009030434A1 (en) | 2007-09-08 | 2009-03-12 | Daimler Ag | Internal combustion engine valve train switching device |
DE102007042932B4 (en) | 2007-09-08 | 2022-11-10 | Mercedes-Benz Group AG | Internal combustion engine valve train switching device |
DE102007052249A1 (en) | 2007-11-02 | 2009-05-07 | Daimler Ag | Brennkraftmotorenventiltriebumschaltvorrichtung |
DE102007052249B4 (en) | 2007-11-02 | 2023-12-14 | Mercedes-Benz Group AG | Internal combustion engine valve train switching device |
US8307797B2 (en) | 2007-11-02 | 2012-11-13 | Daimler Ag | Internal combustion engine valve drive train shifting device |
DE102008024877A1 (en) | 2008-05-23 | 2009-11-26 | Audi Ag | Composite cam shaft for controlling gas shuttle valves of internal-combustion engine, has shaft and multiple torque proof cam elements mounted on shaft |
DE102010022709A1 (en) * | 2010-06-04 | 2011-12-08 | Audi Ag | Valve train for internal combustion engine, has cam carriers and/or cam shaft supported in bearing, and end stop provided for limiting axial shifting of carriers, where end stop is formed as damping element and/or comprises damping element |
CN103370502B (en) * | 2011-02-17 | 2015-11-25 | 戴姆勒股份公司 | There is the camshaft of the cam member that can move axially |
CN103380273B (en) * | 2011-02-17 | 2016-01-13 | 戴姆勒股份公司 | Internal combustion valve mechanism |
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US9038583B2 (en) | 2011-02-17 | 2015-05-26 | Daimler Ag | Internal combustion engine valve drive arrangement |
CN103370502A (en) * | 2011-02-17 | 2013-10-23 | 戴姆勒股份公司 | Camshaft with axially movable cam elements |
DE102011011457A1 (en) | 2011-02-17 | 2012-08-23 | Daimler Ag | Internal combustion engine valve train device |
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 |
DE102011011456A1 (en) | 2011-02-17 | 2012-08-23 | Daimler Ag | Internal combustion engine valve train device |
DE102011076726A1 (en) | 2011-05-30 | 2012-12-06 | Schaeffler Technologies AG & Co. KG | Valve train for combustion piston engine, has actuating device with rocker arm, which is arranged adjacent to control body in radial manner with axial alignment, where rocker arm is pivoted around tangential axis |
WO2013120567A1 (en) | 2012-02-14 | 2013-08-22 | Daimler Ag | Device for adjusting the valve train of a motor vehicle |
DE102012002893A1 (en) | 2012-02-14 | 2013-08-14 | Daimler Ag | Kraftfahrzeugventiltriebverstellvorrichtung |
CN104847429B (en) * | 2014-02-14 | 2017-07-07 | 通用汽车环球科技运作有限责任公司 | For the double-direction control groove of the engine with sliding cam axle |
CN104847429A (en) * | 2014-02-14 | 2015-08-19 | 通用汽车环球科技运作有限责任公司 | Bi-directional control groove design for engine rotation reversal on engine with sliding camshaft |
US10006319B2 (en) | 2014-10-08 | 2018-06-26 | Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr | Cylinder head of an internal combustion engine with at least one camshaft |
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