WO2010094598A1 - Internal combustion engine comprising at least one camshaft - Google Patents

Internal combustion engine comprising at least one camshaft Download PDF

Info

Publication number
WO2010094598A1
WO2010094598A1 PCT/EP2010/051610 EP2010051610W WO2010094598A1 WO 2010094598 A1 WO2010094598 A1 WO 2010094598A1 EP 2010051610 W EP2010051610 W EP 2010051610W WO 2010094598 A1 WO2010094598 A1 WO 2010094598A1
Authority
WO
WIPO (PCT)
Prior art keywords
bearings
camshaft
internal combustion
combustion engine
bearing
Prior art date
Application number
PCT/EP2010/051610
Other languages
German (de)
French (fr)
Inventor
Falk Schneider
Thomas Flender
Michael Kreisig
Markus Walch
Original Assignee
Mahle International Gmbh
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mahle International Gmbh filed Critical Mahle International Gmbh
Priority to JP2011550518A priority Critical patent/JP2012518121A/en
Priority to US13/202,237 priority patent/US20120012075A1/en
Publication of WO2010094598A1 publication Critical patent/WO2010094598A1/en

Links

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
    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/22—Bearings with rolling contact, for exclusively rotary movement with bearing rollers essentially of the same size in one or more circular rows, e.g. needle bearings
    • F16C19/44—Needle bearings
    • F16C19/46—Needle bearings with one row or needles
    • F16C19/466—Needle bearings with one row or needles comprising needle rollers and an outer ring, i.e. subunit without inner ring
    • 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
    • F16C19/00—Bearings with rolling contact, for exclusively rotary movement
    • F16C19/54—Systems consisting of a plurality of bearings with rolling friction
    • F16C19/56—Systems consisting of a plurality of bearings with rolling friction in which the rolling bodies of one bearing differ in diameter from those of another
    • 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
    • F16C41/00—Other accessories, e.g. devices integrated in the bearing not relating to the bearing function as such
    • F16C41/008—Identification means, e.g. markings, RFID-tags; Data transfer means
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49229—Prime mover or fluid pump making
    • Y10T29/49293—Camshaft making

Definitions

  • the present invention relates to an internal combustion engine with at least one camshaft.
  • Camshafts are part of a so-called valve train in internal combustion engines and are usually used to open and close intake and exhaust valves according to design-related timing.
  • Such camshafts are usually stored on so-called rolling bearings, which consist of at least one ring with rotatably mounted therein rolling elements.
  • rolling bearings which consist of at least one ring with rotatably mounted therein rolling elements.
  • usually identical bearings are used at all bearings of the camshaft, but this is disadvantageous in terms of weight and cost, since in this case all bearings must be designed for the maximum loads occurring.
  • the present invention is concerned with the problem of providing for an internal combustion engine with a camshaft an improved embodiment, which is to be realized in particular less expensive and with less weight.
  • the present invention is based on the general idea not to use identical bearings for storing a camshaft in an internal combustion engine, as was customary at all bearings, but rather the individual bearings individually form and in particular with regard to their load capacity to adapt to the loads actually occurring at the respective bearing point during operation of the internal combustion engine.
  • the loads for a bearing on a sprocket of the camshaft are comparatively high, while they are often comparatively low in a central region of the camshaft.
  • a more stable or load bearing must now be used in the area of the sprocket, while in the less loaded area a comparatively lighter and in particular more cost-effective bearing can be used.
  • the individual adaptation of the individual bearings makes it possible, in particular, to reduce a total weight of all the bearings used, which has a favorable effect on fuel consumption and thus also on a CO 2 emission of the internal combustion engine. At the same time, the lighter bearings can be produced more cheaply, whereby a reduction in manufacturing costs can be achieved.
  • a color marking is attached to the camshaft and to a respective bearing, which allows or simplifies an assignment of the respective bearing to an installation location on the camshaft. Since in contrast to the previously used and identically constructed bearing now for trouble-free operation of the camshaft a proper, especially correct position, installing the respective bearing is absolutely necessary, must be reliably excluded in the production that, for example, a light bearing in the range of high Load, eg. In the range of the sprocket, is installed and there due to the high loads wear comparatively quickly and must be replaced accordingly quickly.
  • the color markings on the camshaft and on the associated bearings thereby facilitate an assembly worker the correct insertion or the correct arrangement of the respective bearing on the camshaft, so that this example. Only one red installed bearing must also be installed at a point marked red in the camshaft. By means of such a color marking, an error rate during installation of the bearings according to the invention can preferably be reduced to zero.
  • Fig. 2 is a sectional view through different embodiments of bearings according to the invention.
  • a camshaft 1 for an otherwise not shown internal combustion engine at least two bearings 2 and 2 ', which may be formed, for example, as a roller bearing, and via which the camshaft 1 is mounted in the internal combustion engine. Also indicated are an on the Camshaft 1 arranged cam 3 and a longitudinal end of the camshaft
  • the individual bearings 2, 2 ' of which according to FIG. 1, only two are shown, individually formed and adapted in terms of their load capacity to the actual occurring during operation of the internal combustion engine at the respective bearing loads.
  • the load of the camshaft 1 is significantly higher than, for example, in a central region, so that according to FIG. 1 and according to the invention, the bearing 2 'stronger, more resilient and heavier than the bearing 2.
  • the inventive individual and load-adapted design of the individual bearings 2, 2 'need not be designed as previously with the use of identical bearings all bearings to a maximum load, but it can be used in particular at low load points smaller, lighter and / or cheaper bearings 2.
  • the individual bearings 2, 2 ' may differ, for example, in a different number of rolling elements 5, as shown, for example, in the three bearings 2, 2' shown by way of example in FIG. 2.
  • the individual bearings 2, 2 ' can also differ with respect to the diameter of the individual rolling elements 5, wherein, according to FIG. 2, the rolling elements 5 of the bearing 2 drawn in the middle have a significantly smaller diameter than, for example, the rolling elements 5 of the one in the right Presentation drawn warehouse 2 '.
  • a different number of rolling elements 5 are provided, so that, for example, the bearing 2 in the left-hand illustration of FIG.

Abstract

The invention relates to an internal combustion engine comprising at least one camshaft (1) mounted by means of a plurality of bearings (2, 2'), especially roller bearings, the bearings (2, 2') being individually embodied and adapted, in terms of the bearing capacity thereof, to the loads actually created on the respective bearing site during the operation of the internal combustion engine. In this way, especially weight and thus fuel consumption and CO2 emissions can be reduced.

Description

Brennkraftmaschine mit wenigstens einer Nockenwelle Internal combustion engine with at least one camshaft
Die vorliegende Erfindung betrifft eine Brenn kraftmasch ine mit wenigstens einer Nockenwelle.The present invention relates to an internal combustion engine with at least one camshaft.
Nockenwellen sind in Brennkraftmaschinen Teil eines so genannten Ventiltriebes und werden üblicherweise dazu verwendet, Ein- und Auslassventile nach konstruktionsmäßigen Steuerzeiten zu öffnen bzw. zu schließen. Gelagert werden derartige Nockenwellen üblicherweise über so genannte Wälzlager, die aus zumindest einem Ring mit darin drehbar gelagerten Wälzkörpern bestehen. Um die Teilevielfalt dabei möglichst klein halten zu können, werden bisher an allen Lagerstellen der Nockenwelle üblicherweise identische Lager verwendet, was jedoch hinsichtlich des Gewichts und der Kosten von Nachteil ist, da in diesem Fall sämtliche Lager auf die maximal auftretenden Lasten ausgelegt werden müssen.Camshafts are part of a so-called valve train in internal combustion engines and are usually used to open and close intake and exhaust valves according to design-related timing. Such camshafts are usually stored on so-called rolling bearings, which consist of at least one ring with rotatably mounted therein rolling elements. In order to keep the variety of parts as small as possible, usually identical bearings are used at all bearings of the camshaft, but this is disadvantageous in terms of weight and cost, since in this case all bearings must be designed for the maximum loads occurring.
Die vorliegende Erfindung beschäftigt sich mit dem Problem, für eine Brennkraftmaschine mit einer Nockenwelle eine verbesserte Ausführungsform anzugeben, die insbesondere kostengünstiger und mit geringerem Gewicht zu realisieren ist.The present invention is concerned with the problem of providing for an internal combustion engine with a camshaft an improved embodiment, which is to be realized in particular less expensive and with less weight.
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 independent claim 1. Advantageous embodiments are the subject of the dependent claims.
Die vorliegende Erfindung beruht auf dem allgemeinen Gedanken, zur Lagerung einer Nockenwelle in einer Brennkraftmaschine nicht wie bisher üblich an allen Lagerstellen identische Lager zu verwenden, sondern die einzelnen Lager individuell auszubilden und insbesondere hinsichtlich ihrer Tragfähigkeit an die an der jeweiligen Lagerstelle beim Betrieb der Brennkraftmaschine tatsächlich auftretenden Belastungen anzupassen. Beispielsweise sind die Belastungen für ein Lager an einem Kettenrad der Nockenwelle vergleichsweise hoch, während sie in einem Mittelbereich der Nockenwelle oftmals vergleichsweise nieder sind. Gemäß der Erfindung muss nun im Bereich des Kettenrads ein tragfähigeres bzw. belastbareres Lager eingesetzt werden, während in dem geringer belasteten Bereich ein vergleichsweise dazu leichteres und insbesondere kostengünstigeres Lager eingesetzt werden kann. Durch die individuelle Anpassung der einzelnen Lager lässt sich insbesondere ein Gesamtgewicht sämtlicher verwendeter Lager reduzieren, was sich günstig auf einen Kraftstoffverbrauch und damit auch auf eine CO2-Emission der Brennkraftmaschine auswirkt. Zugleich können die leichteren Lager kostengünstiger hergestellt werden, wodurch eine Reduzierung der Fertigungskosten erreicht werden kann.The present invention is based on the general idea not to use identical bearings for storing a camshaft in an internal combustion engine, as was customary at all bearings, but rather the individual bearings individually form and in particular with regard to their load capacity to adapt to the loads actually occurring at the respective bearing point during operation of the internal combustion engine. For example, the loads for a bearing on a sprocket of the camshaft are comparatively high, while they are often comparatively low in a central region of the camshaft. According to the invention, a more stable or load bearing must now be used in the area of the sprocket, while in the less loaded area a comparatively lighter and in particular more cost-effective bearing can be used. The individual adaptation of the individual bearings makes it possible, in particular, to reduce a total weight of all the bearings used, which has a favorable effect on fuel consumption and thus also on a CO 2 emission of the internal combustion engine. At the same time, the lighter bearings can be produced more cheaply, whereby a reduction in manufacturing costs can be achieved.
Bei einer vorteilhaften Weiterbildung der erfindungsgemäßen Lösung, sind an der Nockenwelle und an einem jeweiligen Lager jeweils eine Farbmarkierung angebracht, die eine Zuordnung des jeweiligen Lagers zu einem Einbauort an der Nockenwelle erlaubt bzw. vereinfacht. Da im Unterschied zu dem bisher verwendeten und identisch aufgebauten Lager nunmehr für einen störungsfreien Betrieb der Nockenwelle ein richtiges, insbesondere lagerichtiges, Einbauen der jeweiligen Lager unbedingt erforderlich ist, muss in der Fertigung zuverlässig ausgeschlossen werden, dass bspw. ein leichtes Lager im Bereich einer hohen Belastung, bspw. im Bereich des Kettenrads, eingebaut wird und dort aufgrund der hohen Belastungen vergleichsweise schnell verschleißt und dementsprechend schnell ausgetauscht werden muss. Die Farbmarkierungen an der Nockenwelle und an den zugehörigen Lagern erleichtern dabei einem Montagearbeiter das richtige Einsetzen bzw. die richtige Anordnung des jeweiligen Lagers an der Nockenwelle, so dass dieser bspw. lediglich ein rot markiertes Lager an einer ebenfalls rot markierten Stelle der Nockenwelle einbauen muss. Durch eine derartige Farbmarkierung lässt sich eine Fehlerrate beim Einbau der erfindungsgemäßen Lager vorzugsweise auf Null reduzieren.In an advantageous development of the solution according to the invention, in each case a color marking is attached to the camshaft and to a respective bearing, which allows or simplifies an assignment of the respective bearing to an installation location on the camshaft. Since in contrast to the previously used and identically constructed bearing now for trouble-free operation of the camshaft a proper, especially correct position, installing the respective bearing is absolutely necessary, must be reliably excluded in the production that, for example, a light bearing in the range of high Load, eg. In the range of the sprocket, is installed and there due to the high loads wear comparatively quickly and must be replaced accordingly quickly. The color markings on the camshaft and on the associated bearings thereby facilitate an assembly worker the correct insertion or the correct arrangement of the respective bearing on the camshaft, so that this example. Only one red installed bearing must also be installed at a point marked red in the camshaft. By means of such a color marking, an error rate during installation of the bearings according to the invention can preferably be reduced to zero.
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.
Dabei zeigen, jeweils schematisch,Show, in each case schematically,
Fig. 1 eine Nockenwelle mit zwei unterschiedlichen Lagern,1 shows a camshaft with two different bearings,
Fig. 2 eine Schnittdarstellung durch unterschiedliche Ausführungsformen von erfindungsgemäßen Lagern.Fig. 2 is a sectional view through different embodiments of bearings according to the invention.
Entsprechend der Fig. 1 , weist eine Nockenwelle 1 für eine im Übrigen nicht gezeigte Brennkraftmaschine zumindest zwei Lager 2 und 2' auf, welche bspw. als Wälzlager ausgebildet sein können, und über welche die Nockenwelle 1 in der Brennkraftmaschine gelagert ist. Ebenfalls angedeutet sind ein an der Nockenwelle 1 angeordneter Nocken 3 sowie ein längsendseitig der Nockenwelle1, a camshaft 1 for an otherwise not shown internal combustion engine at least two bearings 2 and 2 ', which may be formed, for example, as a roller bearing, and via which the camshaft 1 is mounted in the internal combustion engine. Also indicated are an on the Camshaft 1 arranged cam 3 and a longitudinal end of the camshaft
1 angeordnetes Kettenrad 4. Erfindungsgemäß sind nun die einzelnen Lager 2, 2', von denen gemäß der Fig. 1 lediglich zwei dargestellt sind, individuell ausgebildet und hinsichtlich ihrer Tragfähigkeit an die jeweils beim Betrieb der Brennkraftmaschine an der jeweiligen Lagerstelle tatsächlich auftretenden Belastungen angepasst. Beispielsweise ist im Bereich des Kettenrads 4 die Belastung der Nockenwelle 1 deutlich höher als bspw. in einem Mittelbereich, so dass gemäß der Fig. 1 und gemäß der Erfindung das Lager 2' stärker, belastbarer und auch schwerer ausgebildet ist als das Lager 2. Durch die erfindungsgemäße individuelle und belastungsangepasste Ausbildung der einzelnen Lager 2, 2' müssen nicht wie bisher bei der Verwendung von identischen Lagern sämtliche Lager auf eine Maximalbelastung ausgelegt werden, sondern es können insbesondere an belastungsarmen Stellen kleinere, leichtere und/oder kostengünstigere Lager 2 eingesetzt werden.1 arranged sprocket 4. According to the invention, the individual bearings 2, 2 ', of which according to FIG. 1, only two are shown, individually formed and adapted in terms of their load capacity to the actual occurring during operation of the internal combustion engine at the respective bearing loads. For example, in the region of the sprocket 4, the load of the camshaft 1 is significantly higher than, for example, in a central region, so that according to FIG. 1 and according to the invention, the bearing 2 'stronger, more resilient and heavier than the bearing 2. By the inventive individual and load-adapted design of the individual bearings 2, 2 'need not be designed as previously with the use of identical bearings all bearings to a maximum load, but it can be used in particular at low load points smaller, lighter and / or cheaper bearings 2.
Die einzelnen Lager 2, 2' können sich bspw. in einer unterschiedlichen Anzahl an Wälzkörpern 5 unterscheiden, wie dies bspw. bei den drei beispielhaft dargestellten Lagern 2, 2' in der Fig. 2 dargestellt ist. Ebenfalls unterscheiden können sich die einzelnen Lager 2, 2' hinsichtlich der Durchmesser der einzelnen Wälzkörper 5, wobei gemäß der Fig. 2 die Wälzkörper 5 des in der Mitte gezeichneten Lagers 2 einen deutlich geringeren Durchmesser aufweisen als bspw. die Wälzkörper 5 des in der rechten Darstellung gezeichneten Lagers 2'. Darüber hinaus kann je nach erwarteter Belastung des einzelnen Lager 2, 2' - wie oben erwähnt - auch eine unterschiedliche Anzahl an Wälzkörpern 5 vorgesehen werden, so dass bspw. das Lager 2 in der linken Darstellung der Fig.The individual bearings 2, 2 'may differ, for example, in a different number of rolling elements 5, as shown, for example, in the three bearings 2, 2' shown by way of example in FIG. 2. The individual bearings 2, 2 'can also differ with respect to the diameter of the individual rolling elements 5, wherein, according to FIG. 2, the rolling elements 5 of the bearing 2 drawn in the middle have a significantly smaller diameter than, for example, the rolling elements 5 of the one in the right Presentation drawn warehouse 2 '. In addition, depending on the expected load of the individual bearing 2, 2 '- as mentioned above - also a different number of rolling elements 5 are provided, so that, for example, the bearing 2 in the left-hand illustration of FIG.
2 deutlich weniger Wälzkörper aufweist als das in der Mitte dargestellte Lager 2 gemäß der Fig. 2. Da bisher identische Lager an der Nockenwelle 1 eingebaut wurden, musste auf eine lagerichtige Zuordnung der einzelnen Lager an einem Einbauort an der Nockenwelle 1 nicht geachtet werden. Mit dem erfindungsgemäß individuell ausgestalteten Lagern 2, 2', ist es für einen störungsfreien Betrieb der Nockenwelle 1 jedoch erforderlich, die unterschiedlichen Lager 2, 2' entsprechend ihrer Tragfähigkeit lagerichtig an der Nockenwelle 1 anzuordnen. Helfen können hierbei erfindungsgemäß an der Nockenwelle 1 und an einem jeweiligen Lager 2, 2' angeordnete Farbmarkierungen 6, 6', die eine Zuordnung des jeweiligen Lagers 2, 2' zum Einbauort an der Nockenwelle 1 erleichtern. So kann bspw. ein rot markiertes Lager 2 einfach einem ebenfalls rot markierten Einbauort an der Nockenwelle 1 zugeordnet werden, so dass eine Fehlerquote beim An- bzw. Einbau der jeweiligen Lager 2, 2' zumindest stark reduziert, vorzugsweise gänzlich vermieden werden kann.2 has significantly fewer rolling elements than the bearing 2 shown in the middle according to FIG. 2. Since previously identical bearings were installed on the camshaft 1, had to be paid to a correct position assignment of the individual bearings at a location on the camshaft 1 not. However, with the inventively designed individually bearings 2, 2 ', it is necessary for trouble-free operation of the camshaft 1, the different bearings 2, 2' according to their load capacity in the correct position to be arranged on the camshaft 1. According to the invention, color marks 6, 6 'arranged on the camshaft 1 and on a respective bearing 2, 2', which facilitate an assignment of the respective bearing 2, 2 'to the installation location on the camshaft 1, can help. Thus, for example, a bearing 2 marked in red can simply be assigned to a likewise marked red installation location on the camshaft 1, so that an error rate when attaching or installing the respective bearings 2, 2 'can at least greatly reduced, preferably completely avoided.
Mit dem erfindungsgemäß individuell und hinsichtlich ihrer Tragfähigkeit an die Belastungen der Nockenwelle 1 angepassten Lagern 2, 2', lassen sich nicht nur vergleichsweise kostengünstigere Lager 2 einsetzen, sondern es kann zudem auch ein Gesamtgewicht der Lager 2, 2' reduziert werden, was sich positiv auf einen Kraftstoffverbrauch und eine CO2-Emission der Brennkraftmaschine auswirkt. With the according to the invention individually and in terms of their capacity to the loads of the camshaft 1 matched bearings 2, 2 ', not only relatively cheaper bearings 2 can be used, but it can also be a total weight of the bearing 2, 2' are reduced, which is positive on a fuel consumption and CO 2 emissions of the internal combustion engine.

Claims

Ansprüche claims
1. Brennkraftmaschine mit wenigstens einer Nockenwelle (1 ), die über mehrere Lager (2,2'), insbesondere über Wälzlager, gelagert ist, wobei die Lager (2,2') individuell ausgebildet und hinsichtlich ihrer Tragfähigkeit an die beim Betrieb der Brennkraftmaschine an der jeweiligen Lagerstelle tatsächlich auftretenden Belastungen angepasst sind.1. Internal combustion engine with at least one camshaft (1), which is mounted on a plurality of bearings (2,2 '), in particular via roller bearings, wherein the bearings (2,2') formed individually and in terms of their carrying capacity to the operation of the internal combustion engine at the respective storage site actually occurring loads are adjusted.
2. Brennkraftmaschine nach Anspruch 1 , dadurch gekennzeichnet, dass zumindest zwei Lager (2,2') eine unterschiedliche Anzahl an Wälzkörpern (5) aufweisen.2. Internal combustion engine according to claim 1, characterized in that at least two bearings (2,2 ') have a different number of rolling elements (5).
3. Brennkraftmaschine nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass zumindest zwei Lager (2,2') hinsichtlich ihres Durchmessers unterschiedliche Wälzkörper (5) aufweisen.3. Internal combustion engine according to claim 1 or 2, characterized in that at least two bearings (2,2 ') with respect to their diameter different rolling elements (5).
4. Brennkraftmaschine nach Anspruch 2 oder3, dadurch gekennzeichnet, dass die Wälzkörper (5) als Nadeln ausgebildet sind.4. Internal combustion engine according to claim 2 or 3, characterized in that the rolling bodies (5) are formed as needles.
5. Brennkraftmaschine nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass an der Nockenwelle (1 ) und an einem jeweiligen Lager (2,2') jeweils eine Farbmarkierung (6,6') angebracht ist, die eine Zuordnung des jeweiligen Lagers (2,2') zu einem Einbauort an der Nockenwelle (1 ) erlaubt. 5. Internal combustion engine according to one of claims 1 to 4, characterized a color marking (6, 6 ') is mounted on the camshaft (1) and on a respective bearing (2, 2'), which indicates that the respective bearing (2, 2 ') is assigned to an installation location on the camshaft (1 ) allowed.
PCT/EP2010/051610 2009-02-19 2010-02-10 Internal combustion engine comprising at least one camshaft WO2010094598A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2011550518A JP2012518121A (en) 2009-02-19 2010-02-10 Internal combustion engine having at least one camshaft
US13/202,237 US20120012075A1 (en) 2009-02-19 2010-02-10 Internal combustion engine comprising at least one camshaft

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102009009665.5 2009-02-19
DE102009009665A DE102009009665A1 (en) 2009-02-19 2009-02-19 Internal combustion engine with at least one camshaft

Publications (1)

Publication Number Publication Date
WO2010094598A1 true WO2010094598A1 (en) 2010-08-26

Family

ID=42126086

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/051610 WO2010094598A1 (en) 2009-02-19 2010-02-10 Internal combustion engine comprising at least one camshaft

Country Status (4)

Country Link
US (1) US20120012075A1 (en)
JP (1) JP2012518121A (en)
DE (1) DE102009009665A1 (en)
WO (1) WO2010094598A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012217456A1 (en) * 2012-09-26 2014-03-27 Mahle International Gmbh Camshaft for an internal combustion engine
DE102012221876B4 (en) * 2012-11-29 2021-01-07 Schaeffler Technologies AG & Co. KG Camshaft adjustment device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR887207A (en) * 1941-07-24 1943-11-08 Gnome Et Rhone Moteurs Improvements to multi-bend crankshafts for engines
US5934234A (en) * 1996-10-24 1999-08-10 Honda Giken Kogyo Kabushiki Kaisha Assembly structure of a shaft having a fixed sprocket
DE102006036851A1 (en) * 2005-08-05 2007-06-28 Neumayer Tekfor Holding Gmbh Cam shaft for internal combustion engine, has base bodies separately manufactured and axially engaged on shaft through sliding, and fixation formed by using ball bearing and provided on bodies
EP1860338A1 (en) * 2005-03-11 2007-11-28 JTEKT Corporation Rolling bearing, camshaft device, and camshaft supporting device
JP2009030468A (en) * 2007-07-25 2009-02-12 Jtekt Corp Camshaft unit

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3567877A (en) * 1969-07-03 1971-03-02 Herbert Y Awaya Improved adjustment means for distributor contacts and bearings
US4388897A (en) * 1980-09-22 1983-06-21 Bernard Rosa Variable camshaft assembly
JPS59124468A (en) * 1982-12-28 1984-07-18 Nissan Motor Co Ltd Work instruction method in car assembling process
JP3058078B2 (en) * 1996-02-22 2000-07-04 トヨタ自動車株式会社 Internal combustion engine with variable valve timing mechanism
JP3811232B2 (en) * 1996-10-23 2006-08-16 本田技研工業株式会社 Assembly structure of shaft with sprocket
DE19807675A1 (en) * 1998-02-25 1999-08-26 Schaeffler Waelzlager Ohg Cylinder head for IC engine with camshaft
JP2001151234A (en) * 1999-11-29 2001-06-05 Ricoh Co Ltd Article transporting and keeping apparatus
JP4002108B2 (en) * 2002-01-18 2007-10-31 ヤマハ発動機株式会社 Rolling bearings and crankshaft bearings
WO2006088149A1 (en) * 2005-02-17 2006-08-24 Jtekt Corporation Camshaft device and method of assembling camshaft device
JP2006226183A (en) * 2005-02-17 2006-08-31 Jtekt Corp Camshaft device and its assembling method
JP4400484B2 (en) * 2005-03-11 2010-01-20 株式会社ジェイテクト Camshaft support device
JP4382010B2 (en) * 2005-06-23 2009-12-09 本田技研工業株式会社 Engine valve gear
CN101949312B (en) * 2005-08-05 2012-06-13 诺伊曼尔·泰克福尔控股有限公司 Compensating shaft for internal combustion engine
JP2007192103A (en) * 2006-01-19 2007-08-02 Toyota Motor Corp Camshaft support structure for internal combustion engine
EP2060808B1 (en) * 2006-09-04 2012-10-10 NTN Corporation Roller bearing, cam shaft support structure, internal combustion engine, and method of assembling roller bearing
JP5112830B2 (en) * 2006-12-28 2013-01-09 Ｎｔｎ株式会社 Tapered roller bearings
DE102007024092A1 (en) * 2007-05-22 2008-11-27 Mahle International Gmbh camshaft
US20090133528A1 (en) * 2007-11-27 2009-05-28 Jtekt Corporation Shaft apparatus with bearing
JP5145953B2 (en) * 2008-01-10 2013-02-20 株式会社ジェイテクト Camshaft device
US8727105B2 (en) * 2011-05-13 2014-05-20 Sst Bearing Corporation Roller inserts for conveyor rollers and roller assemblies including the same
US9249692B2 (en) * 2011-07-21 2016-02-02 Mahle International Gmbh Camshaft and associate manufacturing method
DE102011081486A1 (en) * 2011-08-24 2013-02-28 Mahle International Gmbh crankcase

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR887207A (en) * 1941-07-24 1943-11-08 Gnome Et Rhone Moteurs Improvements to multi-bend crankshafts for engines
US5934234A (en) * 1996-10-24 1999-08-10 Honda Giken Kogyo Kabushiki Kaisha Assembly structure of a shaft having a fixed sprocket
EP1860338A1 (en) * 2005-03-11 2007-11-28 JTEKT Corporation Rolling bearing, camshaft device, and camshaft supporting device
DE102006036851A1 (en) * 2005-08-05 2007-06-28 Neumayer Tekfor Holding Gmbh Cam shaft for internal combustion engine, has base bodies separately manufactured and axially engaged on shaft through sliding, and fixation formed by using ball bearing and provided on bodies
JP2009030468A (en) * 2007-07-25 2009-02-12 Jtekt Corp Camshaft unit

Also Published As

Publication number Publication date
US20120012075A1 (en) 2012-01-19
DE102009009665A1 (en) 2010-08-26
JP2012518121A (en) 2012-08-09

Similar Documents

Publication Publication Date Title
DE102011054218B4 (en) Internal combustion engine and valve train for an internal combustion engine
EP2513434B1 (en) Cam unit for a constructed camshaft
DE102007010148A1 (en) Valve gear for internal combustion engine, includes bearing which can be slid along cam shaft with cam carriers, relative to engine casing
DE102011018503A1 (en) Valve gear for gas exchange valves of an internal combustion engine with a basic camshaft and between pivot bearings of the basic camshaft in two or more discrete shift positions displaceable cam carriers
DE102012109689A1 (en) Valve train arrangement for actuating gas exchange valves of an internal combustion engine
DE102010019130A1 (en) cylinder head
DE3540899A1 (en) TRAINING OF A V-ENGINE, WITH TWO OVERHEAD INTERCHANGEABLE SUCTION AND EXHAUST CAMSHAFTS
DE102011079742B4 (en) Control device, in particular for exhaust gas recirculation in internal combustion engines
DE102014225054A1 (en) Adjustable camshaft
DE102011000510B4 (en) Sliding cam system with linear bearing
WO2010094598A1 (en) Internal combustion engine comprising at least one camshaft
DE102011077563B4 (en) internal combustion engine
DE102010024722A1 (en) camshaft
DE102007047582A1 (en) Device for controlling the residual gas content of cylinders of an internal combustion engine
DE102009004228A1 (en) Multifunction camshaft cap for combustion engine
DE112013005497T5 (en) turbocharger
DE102012016674A1 (en) 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
DE102017210661A1 (en) Valve train device for a multi-cylinder internal combustion engine
WO2017055489A1 (en) Internal combustion engine
DE102011053333A1 (en) Multicylinder internal combustion engine e.g. petrol engine has groups of cylinders comprising individual cylinders which are actuated variably by adjusting units of inlet and outlet valves
DE102007054977A1 (en) Valve drive device
DE102013222820B4 (en) Variable lift valve train of an internal combustion engine
DE102018112815A1 (en) Variable valve train of a reciprocating internal combustion engine
DE102014104994A1 (en) adjustable camshaft
DE102012109202A1 (en) Valve train for combustion engine, has ball thrust piece whose spherical end is co-acted with locking adjustable socket over locking lath that is arranged axially parallel to camshaft, where socket is slidably connected to sliding piece

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10703850

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 2011550518

Country of ref document: JP

NENP Non-entry into the national phase

Ref country code: DE

WWE Wipo information: entry into national phase

Ref document number: 13202237

Country of ref document: US

122 Ep: pct application non-entry in european phase

Ref document number: 10703850

Country of ref document: EP

Kind code of ref document: A1