DE102009049217A1 - Internal combustion engine with at least one camshaft - Google Patents
Internal combustion engine with at least one camshaft Download PDFInfo
- Publication number
- DE102009049217A1 DE102009049217A1 DE102009049217A DE102009049217A DE102009049217A1 DE 102009049217 A1 DE102009049217 A1 DE 102009049217A1 DE 102009049217 A DE102009049217 A DE 102009049217A DE 102009049217 A DE102009049217 A DE 102009049217A DE 102009049217 A1 DE102009049217 A1 DE 102009049217A1
- Authority
- DE
- Germany
- Prior art keywords
- internal combustion
- combustion engine
- camshaft
- bearing
- bearing block
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
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
-
- 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
- F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C33/00—Parts of bearings; Special methods for making bearings or parts thereof
- F16C33/72—Sealings
- F16C33/74—Sealings of sliding-contact bearings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
- F01L2001/0476—Camshaft bearings
-
- 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
- F01L2001/34479—Sealing of phaser devices
-
- 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
- F01L2303/00—Manufacturing of components used in valve arrangements
-
- 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
- F01L2810/00—Arrangements solving specific problems in relation with valve gears
- F01L2810/02—Lubrication
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C2360/00—Engines or pumps
- F16C2360/18—Camshafts
Abstract
Die vorliegende Erfindung betrifft eine Brennkraftmaschine (1) mit wenigstens einer Nockenwelle (2), die über zumindest einen mit Lagerfluid (3) beaufschlagten Lagerbock (4) in Radialrichtung gelagert ist, wobei im Bereich des Lagerbocks (4) zwei axial zueinander beabstandete Dichtringe (7, 7') vorgesehen sind, die einen zwischen der Nockenwelle (2) und dem zugehörigen Lagerbock (4) gelegenen, Lagerfluid (3) beaufschlagten Ringraum (5) zumindest teilweise in Axialrichtung (9) abdichten. Durch die abgedichtete Lagerstelle sollen der Energieverbrauch und das Emissionsverhalten der Brennkraftmaschine (1) positiv beeinflusst werden.The invention relates to an internal combustion engine (1) with at least one camshaft (2), which is supported in the radial direction by means of at least one bearing block (4) loaded with bearing fluid (3), with two axially spaced sealing rings (4) in the area of the bearing block (4). 7, 7 ') are provided, which at least partially seal an annular space (5) located between the camshaft (2) and the associated bearing block (4) and bearing fluid (3) in the axial direction (9). The sealed bearing point should have a positive influence on the energy consumption and the emission behavior of the internal combustion engine (1).
Description
Die vorliegende Erfindung betrifft eine Brennkraftmaschine mit wenigstens einer Nockenwelle, die über zumindest einen mit Lagerfluid beaufschlagten Lagerbock in Radialrichtung gelagert ist.The present invention relates to an internal combustion engine with at least one camshaft, which is mounted in the radial direction via at least one bearing block acted on by bearing fluid.
Nockenwellen werden üblicherweise in Brennkraftmaschinen, d. h. insbesondere in einem Zylinderkurbelgehäuse (bei obenliegender Nockenwelle erfolgt die Lagerung im Zylinderkopf) derselben, mittels Lagerfluid beaufschlagter Lagerböcke gelagert. Hierbei weisen die Lagerböcke einen Lagerfluid, insbesondere Lageröl, transportierenden Lagerfluidzuführkanal auf, der einen, zwischen der Nockenwelle und dem zugehörigen Lagerbock gelegenen Ringraum mit Lagerfluid, d. h. bspw. mit Öl, beaufschlagt und dadurch die Nockenwelle in Radialrichtung lagert. Durch die Drehbewegung der Nockenwelle und durch die Druckdifferenz innerhalb des Ringraums wird das Lagerfluid in Axialrichtung transportiert und tritt an einem Axialende des Ringraumes in das Zylinderkurbelgehäuse/Ölraum des Zylinderkopfes aus. Nach dem Austreten sammelt es sich üblicherweise in einem Lagerfluidsumpf und wird von dort aus mittels einer Lagerfluidpumpe erneut dem Lagerbock bzw. dem Ringraum zugeführt. Eine derartige Ausbildung bietet jedoch prinzipiell den Nachteil, dass während des Betriebs der Nockenwelle relativ viel Lagerfluid durch den Ringraum gepumpt werden muss, wodurch eine nicht unerhebliche Leistung der Lagerfluidpumpe erforderlich ist. Gleichzeitig muss auch ein relativ großes Volumen an Lagerfluid vorgehalten werden. Aufgrund der immer strenger werdenden Emissionsauflagen ist jedoch die Automobilindustrie zunehmend angehalten, den Energieverbrauch von Brennkraftmaschinen zu reduzieren und dadurch die Emissionen zu verringern.Camshafts are commonly used in internal combustion engines, i. H. in particular, in a cylinder crankcase (with overhead camshaft, the storage in the cylinder head) is the same stored by bearing fluid bearing blocks. Here, the bearing blocks on a bearing fluid, in particular bearing oil, transporting Lagerfluidzuführkanal on, which is located between the camshaft and the associated bearing block annular space with bearing fluid, d. H. For example, with oil, applied and thereby supports the camshaft in the radial direction. Due to the rotational movement of the camshaft and the pressure difference within the annular space, the bearing fluid is transported in the axial direction and exits at an axial end of the annular space in the cylinder crankcase / oil chamber of the cylinder head. After leakage, it usually collects in a bearing fluid sump and is fed from there again by means of a bearing fluid pump to the bearing block or the annular space. However, such a design has the disadvantage that during operation of the camshaft relatively much storage fluid must be pumped through the annulus, whereby a significant performance of the bearing fluid pump is required in principle. At the same time, a relatively large volume of bearing fluid must be provided. However, due to increasingly stringent emission regulations, the automotive industry is increasingly required to reduce the energy consumption of internal combustion engines and thereby reduce emissions.
Die Erfindung beschäftigt sich mit dem Problem, eine verbesserte Ausführungsform einer Brennkraftmaschine anzubieten, mit welcher insbesondere ein Energieverbrauch reduziert werden kann.The invention is concerned with the problem of offering an improved embodiment of an internal combustion engine, with which, in particular, an energy consumption can be reduced.
Dieses Problem wird erfindungsgemäß durch den Gegenstand des unabhängigen Anspruchs 1 gelöst. Vorteilhafte Ausführungsformen sind Gegenstand der abhängigen Ansprüche.This problem is solved according to the invention by the subject matter of
Die Erfindung beruht auf dem allgemeinen Gedanken, einen bisher in Axialrichtung offenen Ringraum zwischen einer Nockenwelle und einem Lagerbock innerhalb einer Brennkraftmaschine zumindest teilweise abzudichten und dadurch einen Durchfluss an Lagerfluid durch die Lagerstelle zu reduzieren. Durch die Reduzierung des Lagerfluidstromes kann zum einen eine Lagerfluidpumpe mit deutlich verringerter Förderleistung eingesetzt werden und zum anderen kann eine erforderliche Lagerfluidmenge reduziert werden. Durch den insgesamt geringeren, durch die zumindest eine Lagerstelle fließenden Lagerfluidstrom, lässt sich somit der Energieverbrauch der Lagerfluidpumpe und damit der Energieverbrauch der gesamten Brennkraftmaschine reduzieren, wodurch diese weniger Kraftstoff verbraucht und dadurch weniger Emissionen produziert. Zum zumindest teilweisen Abdichten des Ringraumes zwischen der Nockenwelle und dem zugehörigen Lagerbock werden erfindungsgemäß zwei axial zueinander beabstandete Dichtringe vorgesehen.The invention is based on the general idea of at least partially sealing an annular space which has hitherto been open in the axial direction between a camshaft and a bearing block within an internal combustion engine and thereby reducing a flow of bearing fluid through the bearing point. By reducing the bearing fluid flow can be used on the one hand a bearing fluid pump with significantly reduced flow rate and on the other hand, a required amount of bearing fluid can be reduced. As a result of the overall lower bearing fluid flow flowing through the at least one bearing point, it is thus possible to reduce the energy consumption of the bearing fluid pump and thus the energy consumption of the entire internal combustion engine, thereby consuming less fuel and thereby producing fewer emissions. For at least partially sealing the annular space between the camshaft and the associated bearing block, two axially spaced sealing rings are provided according to the invention.
Bei einer vorteilhaften Weiterbildung der erfindungsgemäßen Lösung, ist zumindest einer der Dichtringe als in Umfangsrichtung geschlossener oder als offener Dichtring ausgebildet. Ein geschlossener Dichtring kann bspw. aus Kunststoff oder aus Metall ausgebildet sein und bei der Herstellung der Brennkraftmaschine mittels eines insbesondere thermischen Fügeverfahrens oder bei einer Ausführungsform aus Kunststoff mittels einer elastischen Dehnung/Stauchung eingebaut werden. In Umfangsrichtung offene Ringe, bspw. in der Art eines VESPEL®-Ringes können dagegen günstig bei Reparatur- und Wartungsarbeiten eingesetzt werden. Derartige VESPEL®-Ringe weisen dabei in Umfangsrichtung eine ineinander eingreifende Verzahnung auf, die einen derartigen Dichtring in Axialrichtung trotz seiner in Umfangsrichtung offenen Ausführungsform dichtend wirken lässt. Bei einer Ausbildung derartiger Dichtringe aus Kunststoff können diese bspw. in einem kostengünstigen Kunststoff-Spritzgußverfahren hergestellt werden, sodass der zusätzliche Kostenaufwand zur Realisierung der Erfindung vergleichsweise gering ausfällt.In an advantageous development of the solution according to the invention, at least one of the sealing rings is designed as a closed or as an open sealing ring in the circumferential direction. A closed sealing ring can be formed, for example, from plastic or metal and be incorporated in the manufacture of the internal combustion engine by means of a particular thermal joining method or in one embodiment of plastic by means of an elastic stretching / compression. In the circumferential direction open rings, for example. In the manner of a VESPEL ® ring, however, can be used favorably for repair and maintenance. Such VESPEL ® rings in this case have a circumferential interlocking toothing which allows such a sealing ring in the axial direction act sealingly despite its open in the circumferential direction embodiment. In an embodiment of such sealing rings made of plastic, these can be produced, for example, in a cost-effective plastic injection molding process, so that the additional cost of implementing the invention is comparatively low.
Zweckmäßig weist zumindest einer der Dichtringe eine reibungs- und/oder eine verschleißreduzierende Beschichtung auf. Da die Dichtringe in erster Linie eine dichtende Funktion erfüllen sollen, gleichzeitig aber den Betrieb der Brennkraftmaschine nicht negativ beeinflussen sollen, ist eine derartige reibungsreduzierende Beschichtung von besonderem Vorteil, da diese keinen ungünstigen Einfluss auf Reibungsverluste der Brennkraftmaschine erzeugen. Eine verschleißreduzierende Beschichtung hingegen erhöht die Lebensdauer derartiger Dichtringe, wodurch die Qualität der Brennkraftmaschine sowie deren Zuverlässigkeit gesteigert werden kann.Suitably, at least one of the sealing rings on a friction and / or a wear-reducing coating. Since the sealing rings should fulfill a sealing function in the first place, but at the same time should not adversely affect the operation of the internal combustion engine, such a friction-reducing coating is of particular advantage, since they do not produce an unfavorable influence on friction losses of the internal combustion engine. By contrast, a wear-reducing coating increases the service life of such sealing rings, as a result of which the quality of the internal combustion engine and its reliability can be increased.
Bei einer weiteren vorteilhaften Ausführungsform der erfindungsgemäßen Lösung, ist an der Nockenwelle und/oder am Lagerbock eine Nut vorgesehen, in welche ein zugehöriger Dichtring eingreift. Eine derartige Nut bildet dabei eine Führung für den zugehörigen Dichtring, sodass dieser insbesondere bezüglich seiner Axialrichtung lagefixiert werden kann. Ist dabei sowohl am Lagerbock als auch an der Nockenwelle eine gegenüberliegende Nut vorgesehen, kann ein darin eingreifender Dichtring zugleich zumindest geringe Axialkräfte aufnehmen und dient in diesem Fall zumindest zur Unterstützung eines üblicherweise ohnehin vorhandenen Axiallagers.In a further advantageous embodiment of the solution according to the invention, a groove is provided on the camshaft and / or on the bearing block, in which engages an associated sealing ring. Such a groove forms a guide for the associated sealing ring, so that it can be fixed in position, in particular with respect to its axial direction. If an opposing groove is provided both on the bearing block and on the camshaft, a sealing ring engaging therein can simultaneously absorb at least low axial forces and serves in this case, at least to support a usually already existing thrust bearing.
Weitere wichtige Merkmale und Vorteile der Erfindung ergeben sich aus den Unteransprüchen, aus den Zeichnungen und aus der zugehörigen Figurenbeschreibung anhand der Zeichnungen.Other important features and advantages of the invention will become apparent from the dependent claims, from the drawings and from the associated figure description with reference to the drawings.
Es versteht sich, dass die vorstehend genannten und die nachstehend noch zu erläuternden Merkmale nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen.It is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination given, but also in other combinations or in isolation, without departing from the scope of the present invention.
Bevorzugte Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden in der nachfolgenden Beschreibung näher erläutert, wobei sich gleiche Bezugszeichen auf gleiche oder ähnliche oder funktional gleiche Bauteile beziehen.Preferred embodiments of the invention are illustrated in the drawings and will be described in more detail in the following description, wherein like reference numerals refer to the same or similar or functionally identical components.
Es zeigen, jeweils schematisch,Show, in each case schematically,
Entsprechend den
Die Dichtringe
Bei den gemäß den
Generell soll hierbei der Begriff „Dichtring” derart verstanden werden, dass diese den Ringraum
Darüber hinaus kann vorgesehen sein, dass an der Nockenwelle
Bei geschlossenen Dichtringen
Generell kann mit den erfindungsgemäßen Dichtringen
Claims (9)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009049217A DE102009049217A1 (en) | 2009-10-13 | 2009-10-13 | Internal combustion engine with at least one camshaft |
US12/902,557 US20110114046A1 (en) | 2009-10-13 | 2010-10-12 | Internal combustion engine comprising at least one camshaft |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009049217A DE102009049217A1 (en) | 2009-10-13 | 2009-10-13 | Internal combustion engine with at least one camshaft |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102009049217A1 true DE102009049217A1 (en) | 2011-04-28 |
Family
ID=43796686
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102009049217A Withdrawn DE102009049217A1 (en) | 2009-10-13 | 2009-10-13 | Internal combustion engine with at least one camshaft |
Country Status (2)
Country | Link |
---|---|
US (1) | US20110114046A1 (en) |
DE (1) | DE102009049217A1 (en) |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102012203145A1 (en) * | 2012-02-29 | 2013-08-29 | Mahle International Gmbh | Adjustable camshaft |
DE102012016672A1 (en) * | 2012-08-23 | 2014-02-27 | Audi Ag | Internal combustion engine has recess engaged in shaft along radial direction of basic camshaft and in bearing recess of bearing, and bearing seats that are arranged between cylinders of engine main portion along axial direction |
DE102012016674A1 (en) * | 2012-08-23 | 2014-02-27 | Audi Ag | Valve drive for internal combustion engine, has base camshaft formed as hollow shaft, on which cam carrier displaceable rotationally and axially is provided, where base camshaft has bearing shaft |
WO2014013409A3 (en) * | 2012-07-17 | 2014-03-06 | Mechadyne International Limited | A concentric camshaft arrangement |
EP2877715B1 (en) | 2012-07-27 | 2016-11-30 | Thyssenkrupp Presta Teccenter Ag | Adjustable camshaft |
WO2018099885A1 (en) * | 2016-12-02 | 2018-06-07 | Thyssenkrupp Presta Teccenter Ag | Method for mounting at least one sealing ring on a camshaft in a bearing line of an internal combustion engine, and camshaft having at least one sealing ring mounted in such a way |
DE102021205753A1 (en) | 2021-06-08 | 2022-12-08 | Mahle International Gmbh | cylinder head cover |
Families Citing this family (4)
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JP2013245612A (en) * | 2012-05-25 | 2013-12-09 | Aisin Seiki Co Ltd | Valve opening and closing timing control apparatus |
DE102012220652A1 (en) * | 2012-11-13 | 2014-05-15 | Mahle International Gmbh | camshaft |
CN105673110B (en) * | 2016-01-20 | 2018-02-02 | 宝鸡吉利发动机有限公司 | Camshaft VVT oil channel sealing structures |
DE102020208231A1 (en) * | 2020-07-01 | 2022-01-05 | Volkswagen Aktiengesellschaft | Plain bearings with a lubricant channel and at least three axial slide positions |
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DE102004024983A1 (en) * | 2004-05-21 | 2005-12-08 | Daimlerchrysler Ag | Internal combustion engine has sealing ring at least partially encompassing crankshaft journal and installed in bearing block, bearing cap, and/or in crankshaft journal in direct proximity to bearing shells |
EP2048385A1 (en) * | 2007-10-11 | 2009-04-15 | Carl Freudenberg KG | Bearing assembly |
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DE102006024793A1 (en) * | 2006-05-27 | 2007-11-29 | Mahle International Gmbh | camshaft |
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- 2009-10-13 DE DE102009049217A patent/DE102009049217A1/en not_active Withdrawn
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2010
- 2010-10-12 US US12/902,557 patent/US20110114046A1/en not_active Abandoned
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DE102004024983A1 (en) * | 2004-05-21 | 2005-12-08 | Daimlerchrysler Ag | Internal combustion engine has sealing ring at least partially encompassing crankshaft journal and installed in bearing block, bearing cap, and/or in crankshaft journal in direct proximity to bearing shells |
EP2048385A1 (en) * | 2007-10-11 | 2009-04-15 | Carl Freudenberg KG | Bearing assembly |
Cited By (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2634385A1 (en) * | 2012-02-29 | 2013-09-04 | MAHLE International GmbH | Adjustable Camshaft |
CN103291393A (en) * | 2012-02-29 | 2013-09-11 | 马勒国际有限公司 | Adjustable camshaft |
JP2013181539A (en) * | 2012-02-29 | 2013-09-12 | Mahle Internatl Gmbh | Adjustable camshaft |
DE102012203145A1 (en) * | 2012-02-29 | 2013-08-29 | Mahle International Gmbh | Adjustable camshaft |
US8851039B2 (en) | 2012-02-29 | 2014-10-07 | Mahle International Gmbh | Adjustable camshaft |
EP2634385B1 (en) | 2012-02-29 | 2016-05-25 | MAHLE International GmbH | Adjustable Camshaft |
CN104428497B (en) * | 2012-07-17 | 2017-06-13 | 麦加戴恩国际有限公司 | Concentric camshaft device |
WO2014013409A3 (en) * | 2012-07-17 | 2014-03-06 | Mechadyne International Limited | A concentric camshaft arrangement |
CN104428497A (en) * | 2012-07-17 | 2015-03-18 | 麦加戴恩国际有限公司 | A concentric camshaft arrangement |
EP2877715B1 (en) | 2012-07-27 | 2016-11-30 | Thyssenkrupp Presta Teccenter Ag | Adjustable camshaft |
DE102012016672A1 (en) * | 2012-08-23 | 2014-02-27 | Audi Ag | Internal combustion engine has recess engaged in shaft along radial direction of basic camshaft and in bearing recess of bearing, and bearing seats that are arranged between cylinders of engine main portion along axial direction |
DE102012016674A1 (en) * | 2012-08-23 | 2014-02-27 | Audi Ag | Valve drive for internal combustion engine, has base camshaft formed as hollow shaft, on which cam carrier displaceable rotationally and axially is provided, where base camshaft has bearing shaft |
WO2018099885A1 (en) * | 2016-12-02 | 2018-06-07 | Thyssenkrupp Presta Teccenter Ag | Method for mounting at least one sealing ring on a camshaft in a bearing line of an internal combustion engine, and camshaft having at least one sealing ring mounted in such a way |
CN110088429A (en) * | 2016-12-02 | 2019-08-02 | 蒂森克虏伯普利斯坦技术中心股份公司 | Method at least one sealing ring to be mounted on the camshaft in internal combustion engine bearing and the camshaft at least one sealing ring installed in this way |
US10815836B2 (en) | 2016-12-02 | 2020-10-27 | Thyssenkrupp Presta Teccenter Ag | Method for mounting at least one sealing ring on a camshaft in a bearing line of an internal combustion engine, and camshaft having at least one sealing ring mounted in such a way |
CN110088429B (en) * | 2016-12-02 | 2021-07-27 | 蒂森克虏伯普利斯坦技术中心股份公司 | Method for mounting a camshaft in a bearing shell and camshaft |
DE102021205753A1 (en) | 2021-06-08 | 2022-12-08 | Mahle International Gmbh | cylinder head cover |
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US20110114046A1 (en) | 2011-05-19 |
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