DE102007010154A1 - Valve drive for internal-combustion engine, has actuator movable together with cam carrier to camshaft, and curve connecting unit fixedly arranged in housing of engine, where cam carrier is axially movably guided to camshaft - Google Patents
Valve drive for internal-combustion engine, has actuator movable together with cam carrier to camshaft, and curve connecting unit fixedly arranged in housing of engine, where cam carrier is axially movably guided to camshaft Download PDFInfo
- Publication number
- DE102007010154A1 DE102007010154A1 DE200710010154 DE102007010154A DE102007010154A1 DE 102007010154 A1 DE102007010154 A1 DE 102007010154A1 DE 200710010154 DE200710010154 DE 200710010154 DE 102007010154 A DE102007010154 A DE 102007010154A DE 102007010154 A1 DE102007010154 A1 DE 102007010154A1
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- Germany
- Prior art keywords
- cam
- cam carrier
- valve gear
- camshaft
- gear according
- 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
-
- 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
- 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
- F01L1/08—Shape of cams
-
- 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
- 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
- F01L13/0042—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 being 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
- 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 Device For Special Equipments (AREA)
Abstract
Description
Die Erfindung betrifft einen Ventiltrieb einer Brennkraftmaschine gemäß dem Oberbegriff des Anspruchs 1.The The invention relates to a valve train of an internal combustion engine 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 Hubs von Gaswechselventilen von Zylindern der Brennkraftmaschine 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 gas exchange valves of cylinders of the internal combustion engine enable.
Aus
der
Solange die beiden Nockenprofilgruppen auf dem Nockenträger jeweils nur zwei unterschiedliche Nockenprofile aufweisen, sind zum Verschieben des Nockenträgers zwei weitert werden sollen, muss der Nockenträger zwischen drei verschiedenen Verschiebestellungen hin und her bewegt werden, um die drei Nockenprofile wahlweise mit dem Schlepphebel in Anlagekontakt zu bringen. Dazu müsste die Anzahl der Stellorgane oder Aktuatoren im Zylinderkopf bzw. die Anzahl der Kurvenkulissen auf dem Nockenträger verdoppelt werden, was jedoch sowohl wegen des zur Unterbringung der Stellorgane oder Aktuatoren benötigten axialen Bauraums als auch wegen der verhältnismäßig hohen Kosten der Aktuatoren unerwünscht ist.So long the two cam profile groups on the cam carrier each only two different cam profiles are to be moved to move the cam carrier two, must the cam carrier moved back and forth between three different displacement positions be to the three cam profiles optional with the drag lever to bring into abutting contact. This would require the number of actuators or actuators in the cylinder head or the number of curve scenes on the cam carrier doubles, which is both because of the accommodation the actuators or actuators required axial space as also because of the relatively high Cost of actuators undesirable is.
Ausgehend hiervon liegt der Erfindung die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art dahingehend zu verbessern, dass sich die Anzahl der Nockenprofile jeder Nockenprofilgruppe ohne eine Vergrößerung der Anzahl der Stellorgane bzw. Aktuatoren vergrößern lässt.outgoing This is the object of the invention, a device of the type mentioned above to improve that the Number of cam profiles of each cam profile group without increasing the Increase the number of actuators or actuators.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass das Stellorgan mit dem Eingriffselement zusammen mit dem Nockenträger auf der Nockenwelle verschiebbar ist und dass sich das Eingriffselement mit einer ortsfesten Kurvenkulisse im Gehäuse der Brennkraftmaschine in Eingriff bringen lässt.These Task is inventively characterized solved, that the actuator with the engagement element together with the cam carrier on the camshaft is slidable and that the engagement element with a fixed curve backdrop in the housing of the internal combustion engine can be engaged.
Der Erfindung liegt der Gedanke zugrunde, das bisherige Prinzip eines zylinderkopffesten Stellorgans oder Aktuators mit einem in eine Kurvenkulisse des Nockenträgers einfahrbaren Eingriffselement umzukehren und ein zusammen mit dem Nockenträger auf der Nockenwelle verschiebbares Stellorgan zu verwenden, dessen Eingriffselement sich durch Betätigung des Stellorgans mit einer ortsfesten Kurvenkulisse im Gehäuse der Brennkraftmaschine in Eingriff bringen lässt, um den Nockenträger auf der Nockenwelle zu verschieben.Of the Invention is based on the idea, the previous principle of cylinder head fixed actuator or actuator with one in one Curve of the cam carrier inverted retractable engagement element and one together with the cam support to use on the camshaft sliding actuator whose Engagement element by actuation of the actuator with a fixed cam in the housing of Engage internal combustion engine to the cam carrier on to move the camshaft.
Durch diese Maßnahme wird es möglich, ohne eine Vergrößerung der Anzahl der Stellorgane und des benötigten axialen Bauraums eine axiale Verschiebung des Nockenträgers in drei verschiedene Stellungen zu erreichen.By This measure it becomes possible without an enlargement of the Number of actuators and the required axial space one axial displacement of the cam carrier to reach in three different positions.
Die Kurvenkulisse ist vorzugsweise auf einer zum Nockenträger benachbarten Innenseite von mindestens einem oberhalb der Nockenwelle ortsfest im Zylinderkopfgehäuse montierten Kulissenelement ausgebildet und umfasst vorzugsweise zwei in Umfangsrichtung und in axialer Richtung verlaufende Nuten, womit sich während einer Drehung der Nockenwelle durch den Eingriff von einem der Eingriffselemente in die zugehörige Kurvenkulisse eine axiale Verschiebung des Nockenträgers erreichen lässt. Die beiden Nuten erstrecken sich in einem axialen Abstand nebeneinander her und bilden vorzugsweise Teile oder Hälften von zwei gleichsinnigen Schraubenwindungen. Der Mittenabstand der beiden Nuten und deren axiale Erstreckung entlang des Eingriffswegs des Eingriffselements in jede der beiden Nuten entspricht dem axialen Abstand zwischen den Mitten zweier benachbarter Nockenprofile bzw. dem Verschiebeweg des Nockenträgers zwischen zwei benachbarten Verschiebestellungen.The Curve scenery is preferably on a cam carrier adjacent Inside of at least one above the camshaft stationary mounted in the cylinder head housing Slotted element formed and preferably comprises two in the circumferential direction and in the axial direction grooves, which during a Rotation of the camshaft by the engagement of one of the engagement elements in the associated Curve scenery reach an axial displacement of the cam carrier leaves. The Both grooves extend at an axial distance next to each other and preferably form parts or halves of two same direction Screw threads. The center distance of the two grooves and their axial extent along the engagement path of the engagement member in each of the two grooves corresponds to the axial distance between the centers of two adjacent cam profiles or the displacement of the cam carrier between two adjacent displacement positions.
Die Verschiebung des Nockenträgers erfolgt jeweils während eines Zeitraums, in dem die mit der Nockenwelle gesteuerten Gaswechselventile nicht betätigt werden, das heißt in einem Zeitraum, in dem die Schlepphebel der Ventile gegen einen Grundkreisabschnitt der Nockenprofile anliegen, dessen Umfangswinkel etwa 180 Grad beträgt.The displacement of the cam carrier takes place each during a period in which the camshaft-controlled gas exchange valves are not actuated, that is, in a period in which the cam followers of the valves abut against a base circle portion of the cam profiles whose circumferential angle is about 180 degrees.
Um einen Nockenträger aus einer ersten äußeren Verschiebestellung in eine zweite mittlere Verschiebestellung und dann in eine dritte äußere Verschiebestellung zu bewegen, in denen jeweils ein anderes Nockenprofil mit den Schlepphebeln der Gaswechselventile in Anlagekontakt gebracht wird, wird eines der beiden Stellorganen jedes Nockenträgers aktiviert, um das zugehörige Eingriffselement auszufahren und über zwei Umdrehungen der Nockenwelle nacheinander mit jeder der beiden Nuten in Eingriff zu bringen und über einen Drehwinkel von etwa 180 Grad im Eingriff zu halten, um den Nockenträger jeweils während des Eingriffs um den Mittenabstand zwischen zwei benachbarten Nockenprofilen zu verschieben. Dabei tritt das in der ersten Verschiebestellung ausgefahrene, radial nach außen über den Nockenträger überstehende Eingriffselement infolge der Drehung der Nockenwelle und des Nockenträgers mit dem Beginn der ersten Nut der Kurvenkulisse in Eingriff, mit der es über einen Drehwinkel von vorzugsweise 180 Grad im Eingriff bleibt. Da das Kulissenelement ortsfest ist und die axiale Erstreckung der ersten Nut entlang der Innenseite des Eingriffselements dem Mittenabstand der benachbarten Nockenprofile entspricht, wird der Nockenträger mit dem Stellorgan und dem Eingriffselement entlang der Nockenwelle in die benachbarte zweite Verschiebestellung bewegt. In der zweiten Verschiebestellung tritt das Eingriffselement am Ende der ersten Nut aus dieser aus und dreht sich zusammen mit dem Nockenträger um weitere 180 Grad, wobei es nicht mit der Kurvenkulisse im Eingriff steht. Nach einer vollen Umdrehung der Nockenwelle liegt daher das Eingriffselement dem Beginn der zweiten Nut gegenüber, so dass es während einer anschließenden Drehung der Nockenwelle um 180 Grad durch die zweite Nut hindurch bewegt wird. Deren axiale Erstreckung entspricht ebenfalls dem Mittenabstand der benachbarten Nockenprofile, so dass der Nockenträger während des Eingriffs in die benachbarte dritte Verschiebestellung bewegt wird. Bei Erreichen dieser Verschiebestellung wird das Eingriffselement eingezogen, so dass der Nockenträger in der dritten Verschiebestellung bleibt.Around a cam carrier from a first outer displacement position in a second middle displacement position and then in a third outer displacement position to move, in each case a different cam profile with the finger levers the gas exchange valves is placed in abutting contact becomes one the two actuators of each cam carrier activated to the associated engagement element drive out and over two revolutions of the camshaft in succession with each of the two To engage grooves and about a rotation angle of about 180 degrees to engage the cam carrier during each of the Engagement by the center distance between two adjacent cam profiles to move. This occurs in the first displacement position extended, radially outward over the Cam carrier protruding Engagement element due to the rotation of the camshaft and the cam carrier with the beginning of the first groove of the curve backdrop in engagement with the it over a rotation angle of preferably 180 degrees remains engaged. There the link element is stationary and the axial extent of the first groove along the inside of the engagement member the center distance corresponds to the adjacent cam profiles, the cam carrier with the Actuator and the engagement element along the camshaft in the moved adjacent second displacement position. In the second shift position occurs the engagement element at the end of the first groove from this and turns together with the cam carrier by another 180 degrees, whereby it does not engage with the curve scenery stands. After a full revolution of the camshaft is therefore the Engagement element opposite to the beginning of the second groove, so that it while a subsequent Rotation of the camshaft 180 degrees through the second groove is moved. Their axial extent also corresponds to the center distance the adjacent cam profiles so that the cam carrier during the Engaged in the adjacent third shift position is moved. Upon reaching this displacement position, the engagement element retracted so that the cam carrier remains in the third shift position.
Wenn der Nockenträger in der zweiten Verschiebestellung bleiben soll, wird das Eingriffselement bereits nach einer einzigen Drehung der Nockenwelle um etwa 180 Grad wieder eingezogen, das heißt nachdem es sich durch die erste Nut hindurch bewegt hat.If the cam carrier should remain in the second displacement position, the engagement element after only a single turn of the camshaft by about 180 Grad retracted, that is after it has moved through the first groove.
Die Rückstellung des Nockenträgers erfolgt in analoger Weise wie beim eingangs genannten Stand der Technik mit Hilfe einer weiteren ortsfesten Kurvenkulisse, mit der sich das Eingriffselement eines weiteren Stellorgans auf dem Nockenträger in Eingriff bringen lässt. Diese Kurvenkulisse weist ebenfalls zwei in Umfangsrichtung und in axialer Richtung verlaufende Nuten auf, die sich in einem axialen Abstand nebeneinander her erstrecken und vorzugsweise Teile oder Hälften von zwei Schraubenwindungen bilden, jedoch mit gegensinniger Richtung wie bei der anderen Kurvenkulisse.The provision of the cam carrier takes place in an analogous manner as in the aforementioned state of Technology with the help of another stationary curve scenery, with the engage the engagement element of another actuator on the cam carrier in engagement bring. This curve backdrop also has two circumferentially and in the axial direction extending grooves, which in an axial Extend distance side by side and preferably parts or halves form of two helical turns, but in the opposite direction as with the other curve scenery.
Die Betätigung eines Stellorgans zum Ausfahren seines Eingriffselements erfolgt bevorzugt hydraulisch, indem eine Zylinder-/Kolben-Anordnung des Stellorgans mit Motoröl unter Druck beaufschlagt wird, um das Eingriffselement mit der zugehörigen Kurvenkulisse in Eingriff zu bringen. Das Ausfahren des Eingriffselements kann dabei entgegen der Kraft einer Rückstellfeder erfolgen, die für seine Rückstellung sorgt, wenn der Druck des Motoröls entlastet wird. Alternativ können jedoch auch Stellorgane mit einer doppeltwirkenden Zylinder-/Kolben-Anordnung oder mit einem mit Strom beaufschlagbaren Elektromagneten verwendet werden.The activity an actuator for extending its engagement element takes place preferably hydraulically by a cylinder / piston arrangement of Actuator with engine oil pressurized to the engagement element with the associated curve backdrop to engage. The extension of the engagement element can while against the force of a return spring done for his provision ensures when the pressure of the engine oil is relieved. Alternatively you can but also actuators with a double-acting cylinder / piston arrangement or be used with a current-acting electromagnet.
Das im Nockenträger montierte Stellorgan kann darüber hinaus gemäß einer weiteren vorteilhaften Ausgestaltung der Erfindung auch genutzt werden, um den Nockenträger in der gewünschten Verschiebestellung festzuhalten, zum Beispiel indem ein zusammen mit dem Eingriffselement bewegliches Verriegelungselement beim Einziehen des Eingriffselements radial nach innen in eine entsprechende Ausnehmung der Nockenwelle eingefahren wird, so dass sich der Nockenträger bei eingezogenem Eingriffselement nicht mehr auf der Nockenwelle verschieben kann. Beim Ausfahren des Eingriffsele ments wird die Verriegelung automatisch aufgehoben, so dass sich der Nockenträger wieder verschieben kann.The in the cam carrier mounted actuator can about it in addition to a further advantageous embodiment of the invention also be used around the cam carrier in the desired displacement position to hold on, for example by putting one together with the engaging element movable locking element when retracting the engagement element radially inwardly into a corresponding recess of the camshaft is retracted so that the cam carrier with retracted engagement element can not move on the camshaft anymore. When extending the locking element is automatically unlocked, so that the cam carrier can move again.
Im folgenden wird die Erfindung anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Es zeigen:in the The following is the invention with reference to an illustrated in the drawing embodiment explained in more detail. It demonstrate:
Bei
dem in der Zeichnung nur teilweise dargestellten Ventiltrieb für eine Mehrzahl
von Einlassventilen
Wie
am besten in
Wie
am besten in
Wie
am besten in den
Jede
der beiden Nockenprofilgruppen
Von
den drei Nockenprofilen
Die
axiale Verschiebung der Nockenträger
Wie
am besten in
Um
die axiale Verschiebung der Nockenträger
Wie
am besten in
Die
zwei halbringförmigen
Kulissenelemente
Wie
am besten in
Wenn
das Stellorgan
Durch
den Eingriff des Bolzens
Die
eintrittsseitigen Stirnenden der Nuten
- 11
- Einlassventilintake valve
- 22
- Einlassventilintake valve
- 33
- Einlassventilintake valve
- 44
- Einlassventilintake valve
- 55
- Nockenwellecamshaft
- 66
- Nockenträgercam support
- 77
- Nockenträgercam support
- 88th
- NockenprofilgruppeCam profile group
- 99
- NockenprofilgruppeCam profile group
- 1010
- RollenschlepphebelRoller cam
- 1111
- Rollerole
- 1212
- Ventiltellervalve disc
- 1313
- Ventilgliedvalve member
- 1414
- Ventilfedervalve spring
- 1515
- VentilspielausgleichselementLash adjuster
- 1616
- Lagercamp
- 1717
- Lagerbockbearing block
- 1818
- Nockenprofilcam profile
- 1919
- Nockenprofilcam profile
- 2020
- GrundkreisprofilBase circle profile
- 2121
- Drehachse Nockenwelleaxis of rotation camshaft
- 2222
- GrundkreisabschnittBase circle portion
- 2323
- Innenverzahnung Nockenträgerinternal gearing cam support
- 2424
- Außenverzahnung Nockenwelleexternal teeth camshaft
- 2525
- erweitertes Stirnende Nockenträgerexpanded Frontal cam carrier
- 2626
- erweitertes Stirnende Nockenträgerexpanded Frontal cam carrier
- 2727
- Eingriffsbolzenengagement pin
- 2828
- Kurvenkulissecurve backdrop
- 2929
- Kulissenelementlink element
- 3030
- Kulissenelementlink element
- 3131
- Stellorganactuator
- 3232
- Kolbenpiston
- 3333
- Zylindercylinder
- 3434
- Austrittsöffnungoutlet opening
- 3535
- Ölleitungoil line
- 3636
- Ölleitungoil line
- 3737
- Ölbohrungoil well
- 3838
- Ölbohrungoil well
- 3939
- Nutgroove
- 4040
- Nutgroove
- 4141
- Trennwandpartition wall
Claims (22)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200710010154 DE102007010154A1 (en) | 2007-03-02 | 2007-03-02 | Valve drive for internal-combustion engine, has actuator movable together with cam carrier to camshaft, and curve connecting unit fixedly arranged in housing of engine, where cam carrier is axially movably guided to camshaft |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200710010154 DE102007010154A1 (en) | 2007-03-02 | 2007-03-02 | Valve drive for internal-combustion engine, has actuator movable together with cam carrier to camshaft, and curve connecting unit fixedly arranged in housing of engine, where cam carrier is axially movably guided to camshaft |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102007010154A1 true DE102007010154A1 (en) | 2008-06-26 |
Family
ID=39431917
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200710010154 Withdrawn DE102007010154A1 (en) | 2007-03-02 | 2007-03-02 | Valve drive for internal-combustion engine, has actuator movable together with cam carrier to camshaft, and curve connecting unit fixedly arranged in housing of engine, where cam carrier is axially movably guided to camshaft |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102007010154A1 (en) |
Cited By (8)
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WO2010040439A1 (en) | 2008-10-08 | 2010-04-15 | Daimler Ag | Valve train device |
EP2325444A1 (en) * | 2008-08-13 | 2011-05-25 | Chery Automobile Co., Ltd. | A hydraulic camshaft and a hydraulic controlling system thereof |
JP2013234600A (en) * | 2012-05-08 | 2013-11-21 | Toyota Motor Corp | Variable valve device |
US8863714B1 (en) | 2013-08-15 | 2014-10-21 | GM Global Technology Operations LLC | Camshaft assembly |
US9032922B2 (en) | 2013-10-21 | 2015-05-19 | GM Global Technology Operations LLC | Camshaft assembly |
DE102016012048A1 (en) * | 2016-10-07 | 2018-04-12 | Promescon Gmbh | Sliding cam valve drive for variable-stroke actuation of the gas exchange valves of an internal combustion engine |
DE102011002142B4 (en) | 2011-04-18 | 2022-07-28 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Gate circuit for a camshaft |
US20230304423A1 (en) * | 2020-08-12 | 2023-09-28 | Thyssenkrupp Dynamic Components Gmbh | Sliding cam system for an internal combustion engine, comprising an integrated locking element |
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DE10054623A1 (en) * | 2000-11-03 | 2002-05-08 | Audi Ag | Device for changeover of cam pack on camshaft to operate gas exchange valves has actuating element in form of pin movable radially outwards and in extended state interacting with slide tracks in guide section |
DE10148177A1 (en) * | 2001-09-28 | 2003-04-17 | Ina Schaeffler Kg | Valve drive with valve stroke reversal for gas exchange valves of 4-stroke IC engines has slide grooves extending across each other due to location at small relative distance, to reduce axial space requirement |
EP1503048A1 (en) * | 2003-07-19 | 2005-02-02 | Dr.Ing. h.c.F. Porsche Aktiengesellschaft | Valve drive for an internal combustion engine |
-
2007
- 2007-03-02 DE DE200710010154 patent/DE102007010154A1/en not_active Withdrawn
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10054623A1 (en) * | 2000-11-03 | 2002-05-08 | Audi Ag | Device for changeover of cam pack on camshaft to operate gas exchange valves has actuating element in form of pin movable radially outwards and in extended state interacting with slide tracks in guide section |
DE10148177A1 (en) * | 2001-09-28 | 2003-04-17 | Ina Schaeffler Kg | Valve drive with valve stroke reversal for gas exchange valves of 4-stroke IC engines has slide grooves extending across each other due to location at small relative distance, to reduce axial space requirement |
EP1503048A1 (en) * | 2003-07-19 | 2005-02-02 | Dr.Ing. h.c.F. Porsche Aktiengesellschaft | Valve drive for an internal combustion engine |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2325444A1 (en) * | 2008-08-13 | 2011-05-25 | Chery Automobile Co., Ltd. | A hydraulic camshaft and a hydraulic controlling system thereof |
EP2325444A4 (en) * | 2008-08-13 | 2012-01-11 | Chery Automobile Co Ltd | A hydraulic camshaft and a hydraulic controlling system thereof |
US8960143B2 (en) | 2008-10-08 | 2015-02-24 | Daimler Ag | Valve drive train arrangement |
WO2010040439A1 (en) | 2008-10-08 | 2010-04-15 | Daimler Ag | Valve train device |
DE102011002142B4 (en) | 2011-04-18 | 2022-07-28 | Dr. Ing. H.C. F. Porsche Aktiengesellschaft | Gate circuit for a camshaft |
JP2013234600A (en) * | 2012-05-08 | 2013-11-21 | Toyota Motor Corp | Variable valve device |
US9464545B2 (en) | 2013-08-15 | 2016-10-11 | GM Global Technology Operations LLC | Camshaft assembly |
US8863714B1 (en) | 2013-08-15 | 2014-10-21 | GM Global Technology Operations LLC | Camshaft assembly |
DE102014111411B4 (en) | 2013-08-15 | 2023-02-02 | GM Global Technology Operations LLC (n. d. Gesetzen des Staates Delaware) | CAMSHAFT ASSEMBLY |
US9032922B2 (en) | 2013-10-21 | 2015-05-19 | GM Global Technology Operations LLC | Camshaft assembly |
DE102016012048A1 (en) * | 2016-10-07 | 2018-04-12 | Promescon Gmbh | Sliding cam valve drive for variable-stroke actuation of the gas exchange valves of an internal combustion engine |
DE102016012048B4 (en) | 2016-10-07 | 2024-08-22 | Promescon Gmbh | Sliding cam valve train for variable stroke actuation of the gas exchange valves of an internal combustion engine |
US20230304423A1 (en) * | 2020-08-12 | 2023-09-28 | Thyssenkrupp Dynamic Components Gmbh | Sliding cam system for an internal combustion engine, comprising an integrated locking element |
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