DE102012025791B3 - Arrangement of a volume memory in the camshaft adjuster - Google Patents
Arrangement of a volume memory in the camshaft adjuster Download PDFInfo
- Publication number
- DE102012025791B3 DE102012025791B3 DE102012025791.0A DE102012025791A DE102012025791B3 DE 102012025791 B3 DE102012025791 B3 DE 102012025791B3 DE 102012025791 A DE102012025791 A DE 102012025791A DE 102012025791 B3 DE102012025791 B3 DE 102012025791B3
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- Germany
- Prior art keywords
- stator
- cavity
- hydraulic fluid
- pressure
- cover
- 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
- F01L1/34—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
-
- 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
-
- 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
- F01L2001/34426—Oil control valves
- F01L2001/34433—Location oil control valves
-
- 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
-
- 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
- F01L2001/3445—Details relating to the hydraulic means for changing the angular relationship
- F01L2001/34483—Phaser return springs
-
- 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
- F01L2250/00—Camshaft drives characterised by their transmission means
- F01L2250/02—Camshaft drives characterised by their transmission means the camshaft being driven by chains
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Stator (20) für einen Nockenwellenversteller (4) umfassend ein ringförmiges Außenteil (50) zur konzentrischen Aufnahme eines Rotors (22) mit am Rotor (22) angeordneten Flügeln (34) und ein vom ringförmigen Außenteil (50) abragendes Segment (52) zum Eingriff zwischen zwei Flügel (34) des Rotors (22), um gemeinsam mit den beiden Flügeln (34) Druckkammern (44) des Nockenwellenverstellers (4) auszubilden, wobei mindestens ein mit dem Stator (20) drehfest verbundener Deckel (54, 56) vorhanden ist, wobei der Deckel (54, 56) einen Hohlraum (70) zur Aufnahme einer Hydraulikflüssigkeit aus den Druckkammern (44) aufweist, wobei der Hohlraum (70) über Rückschlagventile (72) zu den Druckkammern (44) des Nockenwellenverstellers (4) derart geöffnet ist, dass der Fluss der Hydraulikflüssigkeit ausschließlich vom Hohlraum (70) zur Druckkammer (44) möglich ist, so dass die Druckkammer (44) im Falle eines Unterdruckes die im Hohlraum (70) gespeicherte Hydraulikflüssigkeit ansaugen kann.Stator (20) for a camshaft adjuster (4) comprising an annular outer part (50) for concentrically receiving a rotor (22) with vanes (34) arranged on the rotor (22) and a segment (52) protruding from the annular outer part (50) for Interaction between two vanes (34) of the rotor (22) in order, together with the two vanes (34), to form pressure chambers (44) of the camshaft adjuster (4), with at least one cover (54, 56) connected to the stator (20) in a rotationally fixed manner. is present, the cover (54, 56) having a cavity (70) for receiving a hydraulic fluid from the pressure chambers (44), the cavity (70) via check valves (72) to the pressure chambers (44) of the camshaft adjuster (4) is opened in such a way that the flow of hydraulic fluid is only possible from the cavity (70) to the pressure chamber (44), so that the pressure chamber (44) can suck in the hydraulic fluid stored in the cavity (70) in the event of a negative pressure.
Description
Gebiet der ErfindungField of the invention
Die Erfindung betrifft einen Stator für einen Nockenwellenversteller, den Nockenwellenversteller und einen Verbrennungsmotor mit dem Nockenwellenversteller.The invention relates to a stator for a camshaft adjuster, the camshaft adjuster and an internal combustion engine with the camshaft adjuster.
Hintergrund der ErfindungBackground of the invention
Nockenwellenversteller sind technische Baugruppen zum Verstellen der Phasenlagen zwischen einer Kurbelwelle und einer Nockenwelle in einem Verbrennungsmotor.Camshaft adjusters are technical assemblies for adjusting the phase positions between a crankshaft and a camshaft in an internal combustion engine.
Aus der WO 2011/ 032 805 A1 ist es bekannt in einem Nockenwellenversteller einen Volumenspeicher anzuordnen, aus dem von den Druckkammern im Falle eines Unterdruckes Hydraulikflüssigkeit angesaugt werden kann.From WO 2011/032 805 A1 it is known to arrange a volume accumulator in a camshaft adjuster, from which hydraulic fluid can be sucked in by the pressure chambers in the event of a negative pressure.
Aufgabe der ErfindungObject of the invention
Es ist Aufgabe der Erfindung den bekannten Nockenwellenversteller zu verbessern.It is the object of the invention to improve the known camshaft adjuster.
Lösung der AufgabeSolution of the task
Die Aufgabe wird durch die Merkmale der unabhängigen Ansprüche gelöst. Bevorzugte Weiterbildungen sind Gegenstand der abhängigen Ansprüche.The object is achieved by the features of the independent claims. Preferred developments are the subject of the dependent claims.
Die Erfindung schlägt vor, den Volumenspeicher im Deckel des Stators des Nockenwellenverstellers auszubilden.The invention proposes forming the volume storage in the cover of the stator of the camshaft adjuster.
Der den Volumenspeicher ausbildende Hohlraum ist erfindungsgemäß in einem der beiden oder in beiden Deckeln des Stators ausgebildet sein.According to the invention, the cavity forming the volume storage device can be formed in one of the two or in both covers of the stator.
Die Erfindung gibt einen Stator für einen Nockenwellenversteller an, der ein Außenteil zur konzentrischen Aufnahme eines Rotors mit am Rotor angeordneten Flügeln und ein vom Außenteil abragendes Segment zum Eingriff zwischen zwei Flügel des Rotors umfasst, um gemeinsam mit den beiden Flügeln Druckkammern des Nockenwellenverstellers auszubilden. Dabei weist der Deckel des Stators einen Hohlraum zur Aufnahme einer Hydraulikflüssigkeit aus den Druckkammern auf. Das Außenteil kann insbesondere ringförmig sein, wobei die Segmente radial nach innen abragen. Die Flügel können um den Rotor angeordnet sein und radial und/oder axial von diesem abragen. Der Hohlraum im Deckel kann damit als Volumenspeicher eingesetzt werden, der über einen entsprechenden Zulauf aus der Druckkammer ablaufende Hydraulikflüssigkeit aufnimmt, wobei die Druckkammer im Falle eines Unterdruckes die abgelaufene Hydraulikflüssigkeit über einen mit der Druckkammer verbundenen Ablauf ansaugen kann.The invention specifies a stator for a camshaft adjuster, which comprises an outer part for concentrically receiving a rotor with vanes arranged on the rotor and a segment protruding from the outer part for engagement between two vanes of the rotor in order to form pressure chambers of the camshaft adjuster together with the two vanes. The cover of the stator has a cavity for receiving a hydraulic fluid from the pressure chambers. The outer part can in particular be ring-shaped, with the segments protruding radially inward. The blades can be arranged around the rotor and protrude radially and / or axially therefrom. The cavity in the cover can thus be used as a volume accumulator which receives hydraulic fluid draining from the pressure chamber via a corresponding inlet, the pressure chamber being able to suck in the drained hydraulic fluid via a drain connected to the pressure chamber in the event of a negative pressure.
In einer Weiterbildung der Erfindung umfasst der Stator einen axial auf das ringförmige Außenteil aufgesetzten Frontdeckel und/oder einen axial auf das ringförmige Außenteil aufgesetzten Rückdeckel. Diese Deckel verschließen einen Innenraum des ringförmigen Außenteils des Stators und erlauben es so, die Druckkammern mit den Flügeln des Rotors zu definieren.In a further development of the invention, the stator comprises a front cover axially placed on the annular outer part and / or a rear cover axially placed on the annular outer part. These covers close an interior of the annular outer part of the stator and thus allow the pressure chambers to be defined with the blades of the rotor.
In einer zusätzlichen Weiterbildung ist eine Versorgungsleitung zur Versorgung des Hohlraumes mit Hydraulikflüssigkeit aus den Druckkammern durch Frontdeckel und/oder durch den Rückdeckel geführt. Da die Deckel bereits drehfest mit dem Stator verbunden sind, ist die Versorgung des Hohlraumes mit der Hydraulikflüssigkeit technisch besonders günstig umsetzbar.In an additional development, a supply line for supplying the cavity with hydraulic fluid from the pressure chambers is passed through the front cover and / or through the rear cover. Since the covers are already connected non-rotatably to the stator, the supply of the cavity with the hydraulic fluid can be implemented in a technically particularly advantageous manner.
In einer alternativen oder zusätzlichen Weiterbildung der Erfindung ist eine Entsorgungsleitung zum Ablassen der Hydraulikflüssigkeit aus dem Hohlraum durch den Frontdeckel und/oder durch den Rückdeckel geführt. Auf diese Weise kann der durch den Hohlraum ausgebildete Volumenspeicher über die Entsorgungsleitung direkt an den Tankanschluss des Nockenwellenverstellers angeschlossen werden.In an alternative or additional development of the invention, a disposal line for draining the hydraulic fluid from the cavity is guided through the front cover and / or through the rear cover. In this way, the volume reservoir formed by the cavity can be connected directly to the tank connection of the camshaft adjuster via the disposal line.
In einer anderen Weiterbildung der Erfindung umfasst der angegebene Stator eine Druckausgleichsleitung zwischen dem Hohlraum und einer in Umfangsrichtung gerichteten Außenseite des Segments zur Versorgung der Druckkammer mit der Hydraulikflüssigkeit, so dass die Druckkammer Hydraulikflüssigkeit aus der Druckkammer ansaugen kann.In another development of the invention, the specified stator comprises a pressure equalization line between the cavity and a circumferentially directed outer side of the segment for supplying the pressure chamber with the hydraulic fluid, so that the pressure chamber can suck in hydraulic fluid from the pressure chamber.
In einer besonderen Weiterbildung der Erfindung umfasst der angegebene Stator ein Rückschlagventil in der Druckausgleichsleitung, das einen Hydraulikflüssigkeitsfluss aus dem Hohlraum heraus zulässt, um einen Unterdruck in einer der Druckkammern auszugleichen. Auf diese Weise wird ein Fluss an Hydraulikflüssigkeit von der Druckkammer in den Volumenspeicher verhindert, wenn der Druck in der Druckkammer höher ist, als im Volumenspeicher. Das Rückschlagventil sorgt somit dafür, dass der Volumenspeicher ausschließlich zum Ausgleich eines Unterdruckes in der Druckkammer herangezogen wird.In a particular development of the invention, the specified stator comprises a check valve in the pressure equalization line, which allows hydraulic fluid to flow out of the cavity in order to equalize a negative pressure in one of the pressure chambers. In this way, a flow of hydraulic fluid from the pressure chamber into the volume accumulator is prevented when the pressure in the pressure chamber is higher than in the volume accumulator. The check valve thus ensures that the volume accumulator is only used to compensate for a negative pressure in the pressure chamber.
Die Erfindung gibt auch einen Nockenwellenversteller zum Einstellen einer Phasenverschiebung zwischen einer durch einen Verbrennungsmotor angetriebenen Kurbelwelle und einer den Verbrennungsmotor steuernden Nockenwelle an. Der angegebene Nockenwellenversteller umfasst einen angegebenen Stator zum Aufnehmen einer Rotationsenergie von der Kurbelwelle und einen konzentrisch im Stator aufgenommenen Rotor zum Abgeben der aufgenommenen Rotationsenergie an die Nockenwelle. Durch den angegebenen Stator kann der angegebene Nockenwellenversteller mit einem vergleichsweise geringen Zuwachs an Bauraum funktionell vielfältiger ausgebildet werden.The invention also provides a camshaft adjuster for setting a phase shift between a crankshaft driven by an internal combustion engine and a camshaft that controls the internal combustion engine. The specified camshaft adjuster includes a specified stator for receiving rotational energy from the crankshaft and a Rotor housed concentrically in the stator for releasing the absorbed rotational energy to the camshaft. Due to the specified stator, the specified camshaft adjuster can be designed to be functionally more diverse with a comparatively small increase in installation space.
In einer Weiterbildung der Erfindung umfasst der angegebene Nockenwellenversteller ein Zentralventil zum Verbinden wenigstens einer zwischen dem Rotor und dem Stator ausgebildeten Druckkammer mit dem Hohlraum im Deckel des Stators. Das Zentralventil sorgt damit dafür, dass die Druckkammer entweder aus einem Druckanschluss mit Hydraulikflüssigkeit gefüllt oder über den Volumenspeicher entleert wird.In a further development of the invention, the specified camshaft adjuster comprises a central valve for connecting at least one pressure chamber formed between the rotor and the stator to the cavity in the cover of the stator. The central valve ensures that the pressure chamber is either filled with hydraulic fluid from a pressure connection or emptied via the volume accumulator.
Die Erfindung gibt auch einen Verbrennungsmotor an, der eine Brennkammer, eine durch die Brennkammer angetriebene Kurbelwelle, eine Nockenwelle zum Steuern der Brennkammer und einen angegebenen Nockenwellenversteller zum Übertragen einer Rotationsenergie von der Kurbelwelle auf die Nockenwelle umfasst.The invention also provides an internal combustion engine that includes a combustion chamber, a crankshaft driven by the combustion chamber, a camshaft for controlling the combustion chamber, and a specified cam phaser for transferring rotational energy from the crankshaft to the camshaft.
FigurenlisteFigure list
Ausführungsbeispiele der Erfindung werden nachstehend anhand einer Zeichnung näher erläutert, in der
-
1 eine schematische Darstellung eines Verbrennungsmotors mit Nockenwellenverstellern ; -
2 eine Schnittansicht eines Nockenwellenverstellers aus1 mit einem Stator; -
3 eine Schnittansicht eines Beispiels für den Stator aus2 ; -
4 eine Schnittansicht eines weiteren Beispiels für den Stator aus2 ; und -
5 eine Schnittansicht eines noch weiteren Beispiels für den Stator aus2 zeigen.
-
1 a schematic representation of an internal combustion engine with camshaft adjusters; -
2 a sectional view of a camshaft adjuster from1 with a stator; -
3 Fig. 3 is a sectional view of an example of the stator2 ; -
4th FIG. 3 is a sectional view of another example of the stator2 ; and -
5 Fig. 3 is a sectional view of yet another example of the stator2 demonstrate.
Ausführliche Beschreibung der ZeichnungDetailed description of the drawing
In den Figuren werden gleiche Elemente mit gleichen Bezugszeichen versehen und nur einmal beschrieben.In the figures, the same elements are provided with the same reference symbols and are only described once.
Es wird auf
Der Verbrennungsmotor
Die Nockenwellenversteller
Es wird auf
Neben dem Stator
Der Rotor
Der Rotor
Der Stator
Die Zentralschraube
Die Kanäle
Es wird auf
Wie aus
Es wird auf
Wie aus
Es wird auf
Wie aus
Zusätzlich zu Hohlraum
BezugszeichenlisteList of reference symbols
- 22
- VerbrennungsmotorInternal combustion engine
- 44th
- NockenwellenverstellerCamshaft adjuster
- 66th
- BrennraumCombustion chamber
- 88th
- VentilValve
- 1010
- Nockencam
- 1212th
- Nockenwellecamshaft
- 1414th
- HubkolbenReciprocating piston
- 1616
- Kurbelwellecrankshaft
- 1818th
- TriebmittelPropellants
- 2020th
- Statorstator
- 2222nd
- Rotorrotor
- 2424
- SpiralfederCoil spring
- 2626th
- FederdeckelSpring cover
- 2828
- ZentralventilCentral valve
- 3030th
- ZentralmagnetCentral magnet
- 3232
- Nabehub
- 3434
- Flügelwing
- 3636
- ZentralschraubeCentral screw
- 3838
- SteuerkolbenControl piston
- 4040
- StößelPlunger
- 4242
- Federfeather
- 4444
- DruckkammerPressure chamber
- 4646
- DruckanschlussPressure connection
- 4848
- VolumenspeicheranschlussVolume storage connection
- 5050
- ringförmiges Außenteilannular outer part
- 5252
- Segmentsegment
- 5454
- FrontdeckelFront cover
- 5656
- RückdeckelBack cover
- 5858
- Schraubescrew
- 6060
- axiale Verlängerungaxial extension
- 6262
- NutGroove
- 6464
- Zahntooth
- 6666
- radiale Bohrungradial bore
- 6868
- Kanalchannel
- 7070
- Hohlraumcavity
- 7171
- umfängliche Nutextensive groove
- 7272
- Rückschlagventilcheck valve
- 7474
- TankanschlussTank connection
Claims (10)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012025791.0A DE102012025791B3 (en) | 2012-02-02 | 2012-02-02 | Arrangement of a volume memory in the camshaft adjuster |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102012025791.0A DE102012025791B3 (en) | 2012-02-02 | 2012-02-02 | Arrangement of a volume memory in the camshaft adjuster |
Publications (1)
Publication Number | Publication Date |
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DE102012025791B3 true DE102012025791B3 (en) | 2021-03-25 |
Family
ID=74845885
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE102012025791.0A Active DE102012025791B3 (en) | 2012-02-02 | 2012-02-02 | Arrangement of a volume memory in the camshaft adjuster |
Country Status (1)
Country | Link |
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DE (1) | DE102012025791B3 (en) |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19756016A1 (en) * | 1997-12-17 | 1999-06-24 | Porsche Ag | Device for the hydraulic rotation angle adjustment of a shaft to a drive wheel |
DE69702633T2 (en) * | 1996-04-09 | 2001-04-05 | Toyota Motor Co Ltd | Variable valve control device for internal combustion engine |
DE102006031594A1 (en) * | 2006-07-08 | 2008-01-10 | Schaeffler Kg | Device for the variable adjustment of the timing of gas exchange valves of an internal combustion engine |
DE102007037827A1 (en) * | 2006-08-23 | 2008-03-13 | Aisin Seiki K.K., Kariya | Valve timing control apparatus |
WO2011032805A1 (en) * | 2009-09-18 | 2011-03-24 | Schaeffler Technologies Gmbh & Co. Kg | Device for variably adjusting the control times of gas exchange valves of an internal combustion engine |
DE102011077586A1 (en) * | 2011-06-16 | 2012-12-20 | Schaeffler Technologies AG & Co. KG | Phaser |
-
2012
- 2012-02-02 DE DE102012025791.0A patent/DE102012025791B3/en active Active
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69702633T2 (en) * | 1996-04-09 | 2001-04-05 | Toyota Motor Co Ltd | Variable valve control device for internal combustion engine |
DE19756016A1 (en) * | 1997-12-17 | 1999-06-24 | Porsche Ag | Device for the hydraulic rotation angle adjustment of a shaft to a drive wheel |
DE102006031594A1 (en) * | 2006-07-08 | 2008-01-10 | Schaeffler Kg | Device for the variable adjustment of the timing of gas exchange valves of an internal combustion engine |
DE102007037827A1 (en) * | 2006-08-23 | 2008-03-13 | Aisin Seiki K.K., Kariya | Valve timing control apparatus |
WO2011032805A1 (en) * | 2009-09-18 | 2011-03-24 | Schaeffler Technologies Gmbh & Co. Kg | Device for variably adjusting the control times of gas exchange valves of an internal combustion engine |
DE102011077586A1 (en) * | 2011-06-16 | 2012-12-20 | Schaeffler Technologies AG & Co. KG | Phaser |
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