US20080289592A1 - Cam shaft - Google Patents

Cam shaft Download PDF

Info

Publication number
US20080289592A1
US20080289592A1 US12/124,533 US12453308A US2008289592A1 US 20080289592 A1 US20080289592 A1 US 20080289592A1 US 12453308 A US12453308 A US 12453308A US 2008289592 A1 US2008289592 A1 US 2008289592A1
Authority
US
United States
Prior art keywords
cam shaft
bearing
shaft assembly
roller
cams
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.)
Abandoned
Application number
US12/124,533
Other languages
English (en)
Inventor
Thomas Flender
Michael Kreisig
Falk Schneider
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mahle International GmbH
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=39712327&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=US20080289592(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Mahle International GmbH filed Critical Mahle International GmbH
Assigned to MAHLE INTERNATIONAL GMBH reassignment MAHLE INTERNATIONAL GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: FLENDER, THOMAS, KREISIG, MICHAEL, SCHNEIDER, FALK
Publication of US20080289592A1 publication Critical patent/US20080289592A1/en
Priority to US13/494,740 priority Critical patent/US8720055B2/en
Abandoned legal-status Critical Current

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
    • F01L1/02—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
    • F16C35/00—Rigid support of bearing units; Housings, e.g. caps, covers
    • F16C35/04—Rigid support of bearing units; Housings, e.g. caps, covers in the case of ball or roller bearings
    • F16C35/06—Mounting or dismounting of ball or roller bearings; Fixing them onto shaft or in housing
    • F16C35/07—Fixing them on the shaft or housing with interposition of an element
    • F16C35/077—Fixing them on the shaft or housing with interposition of an element between housing and outer race ring
    • 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
    • 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
    • Y10T29/49636—Process for making bearing or component thereof
    • Y10T29/49696—Mounting
    • 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
    • Y10T29/49826—Assembling or joining
    • Y10T29/49863—Assembling or joining with prestressing of part
    • Y10T29/49865—Assembling or joining with prestressing of part by temperature differential [e.g., shrink fit]
    • 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
    • Y10T74/00—Machine element or mechanism
    • Y10T74/21—Elements
    • Y10T74/2101—Cams

Definitions

  • the invention relates to a cam shaft for internal combustion engines of motor vehicles, which is supported on a cylinder head housing via at least one roller bearing.
  • cam shafts are supported in cam shaft bearings, which are normally manufactured as bushings made from materials, such as aluminum alloys, for example, or as half bearings made of materials on the basis of copper alloys.
  • cam shaft bearings which are normally manufactured as bushings made from materials, such as aluminum alloys, for example, or as half bearings made of materials on the basis of copper alloys.
  • other types of bearings such as a roller bearing, for example, are also known from the state of the art.
  • a thrust bearing function for the cam shaft is normally taken over via a so-called washer disk, which is also known as “trust plate”.
  • washer disks have a considerably shorter life expectancy so that they must typically be replaced on a rotational basis.
  • the invention deals with the problem of specifying an improved embodiment for a cam shaft, where in particular a thrust bearing is improved.
  • the invention is based on the general idea of embodying a thrust bearing for a cam shaft for internal combustion engines of motor vehicles as ball bearings or as roller bearings and to thus on the one hand considerably extend the life expectancy of the thrust bearing and to thus on the other hand improve the thrust bearing as a whole.
  • the cam shaft supported in axial direction in such a manner can be supported on a cylinder head via further bearing devices, which are embodied as roller bearings, whereby the entire bearing of the cam shaft can be improved as compared to bearings known from the state of the art.
  • At least one thrust bearing which is embodied as a roller bearing, encompasses a roller, which runs directly on the cam shaft, wherein a region of the cam shaft, which comes into contact with the roller, is hardened.
  • a bushing which is arranged directly on the cam shaft and on which the roller of the roller bearing rolls.
  • a bushing can also be hardened, for example, and can thus encompass a considerably improved wear resistance as compared to an unhardened material.
  • such a bushing can be chosen in such a manner with reference to its material characteristics that particularly good bearing characteristics can be attained.
  • the cams and/or the roller bearing and/or the at least one thrust bearing are connected to the cam shaft by means of a thermal joining process, by means of an interference fit assembly or by means of adhesion, wherein only finished cams and/or roller bearings and/or thrust bearings are used for joining with the cam shaft. Due to the finished components, a machine finishing of the cams and of the cam shaft, respectively, is not necessary after connecting the afore-mentioned components to the cam shaft, whereby it can be prevented that swarf, for example, penetrates into the roller bearings and negatively impacts them during the future operation.
  • the at least one thrust bearing which is embodied as a ball or roller bearing, is arranged between two cams of the cam shaft and is directly supported thereon.
  • the thrust bearing is thus fixed between the two cams with reference to its axial direction, without requiring further fixing elements for this purpose, the production of which is extensive, for example.
  • the at least one thrust bearing, which is embodied as a ball or roller bearing to be indirectly supported on the two cams via two spacer elements, in particular via two spacer bushings.
  • spacer bushings provide the large advantage that the thrust bearing must not necessarily be arranged in the region directly next to the cams, but that, depending on the axial length of the chosen bushing, it can be arranged in a location, which is advantageous for the installation of the thrust bearing.
  • these spacer bushings can also be fixedly connected to the adjacent cams, which entails a shortened assembly time for the cam shaft.
  • FIG. 1 shows a cam shaft according to the invention
  • FIG. 2 a to d show different embodiments of thrust bearings, which are embodied as ball bearings,
  • FIG. 3 shows a possible embodiment of thrust bearings of a cam shaft when assembled
  • FIG. 4 shows a sectional view through a cam shaft comprising a thrust bearing according to the invention
  • FIG. 5 shows a detailed view of a thrust bearing according to the invention
  • FIG. 6 shows a view onto a cam shaft according to the invention
  • FIG. 7 shows a view onto a cam shaft according to the invention
  • FIG. 8 shows a radial bearing embodied as a roller bearing
  • FIG. 9 shows an illustration as in FIG. 8 , however in a different embodiment
  • FIG. 10 shows a thrust bearing (held in position by means of frictional connection) embodied as a roller bearing
  • FIG. 11 to 13 show a sectional view through a cam shaft according to the invention in a respective other embodiment.
  • a cam shaft 1 for internal combustion engines of motor vehicles encompasses at least one roller bearing 2 , via which the cam shaft 1 is supported on a non-illustrated cylinder head housing 15 . Furthermore, the cam shaft 1 encompasses at least one thrust bearing 3 , which supports the cam shaft 1 in axial direction 4 and which is embodied as a ball or as a roller bearing.
  • the cam shaft 1 according to FIG. 1 is a cam shaft for engines comprising a so-called “tunnel bearing”. That is to say, the cam shaft 1 is inserted into the cam shaft bearing of the crank case in the direction of the cam shaft axis 4 .
  • FIG. 2 a to 2 d different embodiments of the thrust bearings 3 , which are embodied as ball bearings, are illustrated thereby.
  • FIG. 2 a shows a thrust bearing 3 embodied as a ball bearing, which is arranged in axial direction 4 between two cams 5 and 5 ′ and which is indirectly supported on the cams 5 , 5 ′ via two spacer bushings 6 , 6 ′.
  • the spacer bushings 6 , 6 ′ can thereby generally also be referred to as spacer elements.
  • FIG. 2 b shows a thrust bearing 3 , which is also arranged between two cams 5 and 5 ′, which, however, is directly supported on the adjacent cams 5 , 5 ′, namely in each case via a collar 7 , 7 ′, which is a component of the cams 5 , 5 ′.
  • the collar 7 , 7 ′ in FIG. 2 b thereby performs the task of the spacer bushings 6 , 6 ′ in FIG. 2 a.
  • a part 8 (bushing) of the thrust bearing 3 on the cam shaft side in axial direction is embodied in FIG. 2 c to be so wide that the thrust bearing 3 can also be directly supported on the adjacent cams 5 and 5 ′.
  • FIG. 2 d shows an embodiment, where the thrust bearing 3 , which is embodied as a ball bearing, is also located between two cams 5 and 5 ′ of the cam shaft 1 and is supported on a collar 7 a and 7 b of the cams 5 and 5 ′, wherein the respective collar 7 a and 7 b is not a component of the cam 5 and 5 ′, but is soldered, welded or adhered thereto.
  • the thrust bearing 3 which is embodied as a ball bearing
  • FIG. 4 illustrates a cam shaft 1 in a sectional view, wherein the roller bearings 2 as well as the at least one thrust bearing 3 can be identified well.
  • the thrust bearing 3 is embodied as a ball bearing and encompasses a bearing ring 9 , at the outer jacket surface 10 of which provision is made for a revolving groove 11 , which meshes with a connecting element 12 , in particular a stud screw or a pin, at the side of the cylinder head and thus fixes the cam shaft 1 in axial direction 4 .
  • a connecting element 12 in particular a stud screw or a pin
  • FIG. 5 This can be identified particularly well in FIG. 5 , wherein the connecting element 12 is embodied herein as a stud screw and meshes with the groove 11 of the bearing ring 9 .
  • FIG. 6 A particularly clear illustration of the groove 11 , which is arranged on the bearing ring 9 , is shown in FIG. 6 .
  • cam shaft 1 according to FIG. 7 does not encompass a thrust bearing 3 , which is embodied as a ball bearing, but a thrust bearing according to FIG. 8 to 10 , which is embodied as a roller bearing.
  • the at least one radial bearing which is embodied as a roller bearing, encompasses a roller 13 , which runs directly on the cam shaft 1 , wherein the region 14 of the cam shaft 1 , which comes into contact with the roller 13 , is hardened.
  • the thrust bearing 3 according to FIG. 9 in the region 14 of the thrust bearing 3 , which is embodied as roller bearing, for a bushing 8 , which is arranged directly on the cam shaft 1 , on which the roller 13 of the roller bearing, that is to say the radial bearing, rolls.
  • the bushing 8 can also be made of a particularly wear-resistant material or can be subjected to an aging process, which increases the wear-resistance.
  • FIG. 11 to 13 once again show the thrust bearings 3 from FIG. 2 b to 2 d , which are embodied as ball bearings, in their post-assembly position.
  • the cam shafts 1 according to FIG. 7 to 11 are cam shafts 1 for engines comprising a so-called “open bearing”. That is to say, the cam shaft 1 is held in position in the cam shaft bearing of the cylinder head 15 parallel to the cam shaft axis 4 and by means of bearing caps.
  • the cams 5 and/or the roller bearing 2 and/or the at least one thrust bearing 3 in the cam shaft 1 according to the invention are connected to the cam shaft 1 by means of a thermal joining process, by means of an interference fit assembly or by means of adhesion. It is thereby particularly advantageous that only finished cams 5 and/or roller bearings 2 and/or thrust bearings 3 are used for joining with the cam shaft 1 so that a finishing of the cam shaft 1 is no longer necessary after the application of the afore-mentioned components and that swarf and processing dust, respectively, can thus be prevented from reaching into the bearings and thus from damaging them in the long run.
  • the cam shaft 1 according to the invention makes it possible to replace a currently conventional washer disk, which is required for the thrust bearing of the cam shaft 1 , with the thrust bearing 3 according to the invention, which, on the one hand, encompasses a considerably higher life expectancy and which, on the other, helps to reduce maintenance costs in particular.
  • closed roller bearings 2 are applied to said cam shaft 1 during the cam shaft assembly.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Rolling Contact Bearings (AREA)
US12/124,533 2007-05-22 2008-05-21 Cam shaft Abandoned US20080289592A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US13/494,740 US8720055B2 (en) 2007-05-22 2012-06-12 Method of assembling a cam shaft that includes a thermal interference fit between the cam shaft and a bearing

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007024092A DE102007024092A1 (de) 2007-05-22 2007-05-22 Nockenwelle
DE102007024092.0 2007-05-22

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US13/494,740 Division US8720055B2 (en) 2007-05-22 2012-06-12 Method of assembling a cam shaft that includes a thermal interference fit between the cam shaft and a bearing

Publications (1)

Publication Number Publication Date
US20080289592A1 true US20080289592A1 (en) 2008-11-27

Family

ID=39712327

Family Applications (2)

Application Number Title Priority Date Filing Date
US12/124,533 Abandoned US20080289592A1 (en) 2007-05-22 2008-05-21 Cam shaft
US13/494,740 Expired - Fee Related US8720055B2 (en) 2007-05-22 2012-06-12 Method of assembling a cam shaft that includes a thermal interference fit between the cam shaft and a bearing

Family Applications After (1)

Application Number Title Priority Date Filing Date
US13/494,740 Expired - Fee Related US8720055B2 (en) 2007-05-22 2012-06-12 Method of assembling a cam shaft that includes a thermal interference fit between the cam shaft and a bearing

Country Status (3)

Country Link
US (2) US20080289592A1 (de)
EP (1) EP1995417B1 (de)
DE (2) DE102007024092A1 (de)

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110197702A1 (en) * 2007-11-27 2011-08-18 Jtekt Corporation Shaft apparatus with bearing
US20110265756A1 (en) * 2010-04-30 2011-11-03 Thomas Flender Cylinder head
US20120012075A1 (en) * 2009-02-19 2012-01-19 Falk Schneider Internal combustion engine comprising at least one camshaft
US20120037103A1 (en) * 2009-02-19 2012-02-16 Falk Schneider Camshaft
WO2013081444A1 (en) * 2011-11-28 2013-06-06 CHEN, Kon Fook Double-top camshaft
US20140196552A1 (en) * 2013-01-17 2014-07-17 Mahle International Gmbh Device for positioning multiple function elements
US20140251257A1 (en) * 2013-03-06 2014-09-11 Mahle International Gmbh Bearing arrangement
US20150027270A1 (en) * 2013-07-26 2015-01-29 Mahle International Gmbh Roller bearing mounted shaft
JP2016518547A (ja) * 2013-04-29 2016-06-23 マーレ インターナショナル ゲゼルシャフト ミット ベシュレンクテル ハフツングＭＡＨＬＥ Ｉｎｔｅｒｎａｔｉｏｎａｌ ＧｍｂＨ シャフト及び関連実装の複数のエレメントが装備された複合的なハウジングを組み立てる方法
US9598984B2 (en) 2012-11-29 2017-03-21 Schaeffler Technologies AG & Co. KG Camshaft adjusting device
US10480570B2 (en) 2016-03-07 2019-11-19 Mahle International Gmbh Method for producing a bearing assembly
USD902252S1 (en) * 2018-06-04 2020-11-17 Transportation IP Holdings, LLP Modular cam shaft
CN113187575A (zh) * 2020-01-29 2021-07-30 马勒国际有限公司 凸轮轴总成

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006200619A (ja) * 2005-01-20 2006-08-03 Otics Corp 回転組立体とその製造方法
DE102010005874A1 (de) * 2010-01-27 2011-07-28 Daimler AG, 70327 Nockenwelle mit Wälzlager, Montageanordnung für eine Nockenwelle mit Wälzlager und Verfahren zur Fertigung
DE102010060686B4 (de) * 2010-11-19 2015-02-26 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. (FHG) Verfahren und Komponentensatz zur Herstellung eines rohrförmigen Bauteils, insbesondere einer gebauten Nockenwelle
DE102010056111A1 (de) * 2010-12-23 2012-06-28 Neumayer Tekfor Holding Gmbh Lagerung von Nockenwellen
DE102011081486A1 (de) * 2011-08-24 2013-02-28 Mahle International Gmbh Kurbelgehäuse
DE102011088603A1 (de) 2011-12-14 2013-06-20 Mahle International Gmbh Welle-/Lageranordnung
DE102012220210A1 (de) * 2012-11-07 2014-05-08 Schaeffler Technologies Gmbh & Co. Kg Nockenwelle eines hubvariablen Gaswechselventiltriebs
DE102013003294B4 (de) * 2013-02-26 2020-04-23 Thyssenkrupp Presta Teccenter Ag Welle mit zwei Sicherungsringen zur axialen Fixierung eines Lagers
DE102013205129A1 (de) 2013-03-22 2014-09-25 Mahle International Gmbh Lagerrahmen oder Zylinderkopfhaube einer Brennkraftmaschine
DE102013207200A1 (de) * 2013-04-22 2014-11-06 Mahle International Gmbh Brennkraftmaschine
DE102013207573A1 (de) 2013-04-25 2014-10-30 Mahle International Gmbh Lagerrahmen oder Zylinderkopfhaube
DE102013208609A1 (de) * 2013-05-10 2014-11-13 Mahle International Gmbh Nockenwelle
CN104141516B (zh) * 2013-11-22 2016-04-13 泰州市宏祥动力机械有限公司 凸轮轴结构
DE102019103591A1 (de) * 2019-02-13 2020-08-13 Thyssenkrupp Ag Nockenwelle, Verbrennungsmotor und Verfahren zur Montage einer Nockenwelle
US11261954B2 (en) * 2019-02-19 2022-03-01 Mid-States Oilfield Machine LLC Gearbox case with wear sleeve
DE102020121608A1 (de) 2020-08-18 2022-02-24 Schaeffler Technologies AG & Co. KG Nockenwellenverstelleinheit und Verfahren zum Betrieb der Nockenwellenverstelleinheit

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3869938A (en) * 1972-07-01 1975-03-11 Kloeckner Humboldt Deutz Ag Cam shaft for reciprocable piston internal combustion engines
US4277984A (en) * 1979-02-26 1981-07-14 Toyota Jidosha Kogyo Kabushiki Kaisha Steering shaft support device
US4509871A (en) * 1982-11-30 1985-04-09 Carl-Zeiss-Stiftung, Heidenheim/Brenz Play-free anti-friction bearing construction
US4696266A (en) * 1985-05-14 1987-09-29 Fuji Jukogyo Kabushiki Kaisha Decompression apparatus for engines
US5037490A (en) * 1988-12-17 1991-08-06 Emitec Gesellschaft Fur Emissionstechnologie Mbh Process for allowing pretreatment of assembled camshaft components
US5211073A (en) * 1988-07-01 1993-05-18 Volkswagen Ag Apparatus for generating a preferably controllable axial counterforce in a rotating shaft that is axially displaceable by an axial force
US20040003791A1 (en) * 2002-07-08 2004-01-08 Giuseppe Ghelfi Compression release mechanism
US20040187825A1 (en) * 2003-03-17 2004-09-30 Honda Motor Co., Ltd. Cam mechanism with decompression device
US20080115620A1 (en) * 2005-02-17 2008-05-22 Hiroshi Ueno Shaft Assembly
US20080173128A1 (en) * 2005-08-05 2008-07-24 Neumayer Tekfor Holding Gmbh Shaft with Functional Bodies Such as Camshafts for Internal Combustion Engines, Method of Producing Them and Engines Equipped Therewith
US7513232B2 (en) * 2005-02-03 2009-04-07 Mahle International Gmbh Adjustable camshaft, in particular for internal combustion engines for motor vehicles having a hydraulic adjusting device
US7707983B2 (en) * 2005-03-11 2010-05-04 Jtekt Corporation Rolling bearing, cam shaft assembly and cam shaft supporting apparatus
US20100147104A1 (en) * 2005-02-17 2010-06-17 Hiroshi Ueno Cam Shaft Assembly and Assembly Method Thereof

Family Cites Families (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2584740A (en) * 1946-09-12 1952-02-05 Fafnir Bearing Co Self-locking bearing collar
US3516136A (en) * 1968-06-28 1970-06-23 Kahr Bearing Corp Self-aligning bearing and method of forming and mounting thereof
US3999277A (en) * 1974-07-02 1976-12-28 Hiroshi Hamada Method of manufacturing assembly-type camshaft
GB8409771D0 (en) * 1984-04-14 1984-05-23 Ae Plc Manufacture of camshafts
AT382334B (de) * 1985-04-30 1987-02-10 Miba Sintermetall Ag Nocken zum aufschrumpfen auf einer nockenwelle und verfahren zur herstellung eines solchen nockens durch sintern
JPS61266132A (ja) * 1985-05-21 1986-11-25 Musashi Seimitsu Ind Co Ltd 組立カムシヤフトの製造方法
US4872257A (en) * 1985-10-04 1989-10-10 Honda Giken Kogyo Kabushiki Kaisha Apparatus for installing bearings on engine components
US4763503A (en) * 1985-12-31 1988-08-16 Hughes Robert W Apparatus for making a cam shaft
US4738012A (en) * 1985-12-31 1988-04-19 Hughes Robert W Method of making a cam shaft
US5101554A (en) * 1986-10-01 1992-04-07 Emitec Gesellschaft Fur Emissionstechnologie Mbh Process for producing an assembled camshaft as well as assembled camshaft consisting of a shaft tube and slid-on elements
DE3803682A1 (de) * 1988-02-07 1989-08-17 Emitec Emissionstechnologie Verfahren zur herstellung einer gebauten welle
US5187866A (en) * 1991-09-03 1993-02-23 Copperweld Corporation Method of making a cam shaft
SE502137C2 (sv) * 1992-04-10 1995-08-28 Skf Mekanprodukter Ab Anordning för montering och demontering av ett lager på en axel
US5664463A (en) * 1993-03-03 1997-09-09 Amborn; Peter Camshaft assembly with shaft elements positioned one inside the other and method of producing same
DE4408572C1 (de) * 1994-03-14 1995-10-05 Hanspeter Bolanz Verbrennungsmotor für Modellflugzeuge
JP3572715B2 (ja) * 1995-04-18 2004-10-06 スズキ株式会社 多気筒４サイクルエンジンのカムシャフト軸受構造
DE19807675A1 (de) * 1998-02-25 1999-08-26 Schaeffler Waelzlager Ohg Zylinderkopf einer Brennkraftmaschine mit wenigstens einer Nockenwelle
DE19831333A1 (de) * 1998-07-13 2000-01-27 Neumayer Erich Gmbh Co Kg Verfahren zum Befestigen von Bauteilen auf einer Hohlwelle
DE19844203A1 (de) * 1998-09-26 2000-03-30 Schaeffler Waelzlager Ohg Lagerung einer Welle einer Brennkraftmaschine mit geteilten Wälzlagern
US6473964B1 (en) * 2000-01-12 2002-11-05 Keystone Investment Corporation Method of fabricating camshafts
DE10024894C1 (de) 2000-05-19 2002-07-04 Skf Gmbh Mehrreihiges Wälzlager
JP2002349388A (ja) * 2001-05-24 2002-12-04 Yanmar Diesel Engine Co Ltd 燃料噴射ポンプ
SE0102081L (sv) * 2001-06-12 2002-08-27 Skf Ab Monteringsorgan
US6939053B2 (en) * 2001-08-24 2005-09-06 Reliance Electric Technologies, Llc System and method for mounting a shaft within a hollow member
JP4014037B2 (ja) * 2002-09-24 2007-11-28 本田技研工業株式会社 Ｏｈｃ型内燃機関
JP4197309B2 (ja) * 2004-04-21 2008-12-17 ヤマハ発動機株式会社 エンジン
DE102004032587A1 (de) * 2004-07-06 2006-02-09 Daimlerchrysler Ag Verfahren und Montagesystem zur Herstellung einer gebauten Nockenwelle
JP2006097485A (ja) * 2004-09-28 2006-04-13 Musashi Seimitsu Ind Co Ltd カムシャフト及びその組み立て方法
EP1878881A4 (de) 2005-02-17 2011-03-09 Jtekt Corp Nockenwellenvorrichtung und verfahren zur montage der nockenwellenvorrichtung
JP2006226184A (ja) 2005-02-17 2006-08-31 Jtekt Corp カムシャフト装置及びその組立方法
US8381615B2 (en) * 2005-08-05 2013-02-26 Neumayer Tekfor Holding Gmbh Shaft such as a camshaft for internal combustion engines
FR2891035B1 (fr) * 2005-09-22 2008-12-05 Skf Ab Dispositif de palier lisse pour arbre, et arbre et moteur associes.
GB2431977A (en) * 2005-11-02 2007-05-09 Mechadyne Plc Camshaft assembly
DE102006008532A1 (de) * 2006-02-22 2007-08-30 Thyssenkrupp Automotive Ag Verfahren und Vorrichtung zur Fertigbearbeitung von gebauten Nocken- und Exzenterwellen
DE102006013813B4 (de) * 2006-03-23 2011-05-12 Mahle International Gmbh Nockenwelle von insbesondere Kraftfahrzeugverbrennungsmotoren
JP2008157062A (ja) * 2006-12-21 2008-07-10 Otics Corp カムシャフトの支持構造、カムシャフトの取付け方法及びカムシャフトの製造方法

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3869938A (en) * 1972-07-01 1975-03-11 Kloeckner Humboldt Deutz Ag Cam shaft for reciprocable piston internal combustion engines
US4277984A (en) * 1979-02-26 1981-07-14 Toyota Jidosha Kogyo Kabushiki Kaisha Steering shaft support device
US4509871A (en) * 1982-11-30 1985-04-09 Carl-Zeiss-Stiftung, Heidenheim/Brenz Play-free anti-friction bearing construction
US4696266A (en) * 1985-05-14 1987-09-29 Fuji Jukogyo Kabushiki Kaisha Decompression apparatus for engines
US5211073A (en) * 1988-07-01 1993-05-18 Volkswagen Ag Apparatus for generating a preferably controllable axial counterforce in a rotating shaft that is axially displaceable by an axial force
US5037490A (en) * 1988-12-17 1991-08-06 Emitec Gesellschaft Fur Emissionstechnologie Mbh Process for allowing pretreatment of assembled camshaft components
US20040003791A1 (en) * 2002-07-08 2004-01-08 Giuseppe Ghelfi Compression release mechanism
US20040187825A1 (en) * 2003-03-17 2004-09-30 Honda Motor Co., Ltd. Cam mechanism with decompression device
US7513232B2 (en) * 2005-02-03 2009-04-07 Mahle International Gmbh Adjustable camshaft, in particular for internal combustion engines for motor vehicles having a hydraulic adjusting device
US20080115620A1 (en) * 2005-02-17 2008-05-22 Hiroshi Ueno Shaft Assembly
US20100147104A1 (en) * 2005-02-17 2010-06-17 Hiroshi Ueno Cam Shaft Assembly and Assembly Method Thereof
US7707983B2 (en) * 2005-03-11 2010-05-04 Jtekt Corporation Rolling bearing, cam shaft assembly and cam shaft supporting apparatus
US20080173128A1 (en) * 2005-08-05 2008-07-24 Neumayer Tekfor Holding Gmbh Shaft with Functional Bodies Such as Camshafts for Internal Combustion Engines, Method of Producing Them and Engines Equipped Therewith

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8539860B2 (en) 2007-11-27 2013-09-24 Jtekt Corporation Shaft apparatus with bearing
US20110197702A1 (en) * 2007-11-27 2011-08-18 Jtekt Corporation Shaft apparatus with bearing
US20120012075A1 (en) * 2009-02-19 2012-01-19 Falk Schneider Internal combustion engine comprising at least one camshaft
US20120037103A1 (en) * 2009-02-19 2012-02-16 Falk Schneider Camshaft
US8573172B2 (en) * 2009-02-19 2013-11-05 Mahle International Gmbh Camshaft
US20110265756A1 (en) * 2010-04-30 2011-11-03 Thomas Flender Cylinder head
US8936002B2 (en) * 2010-04-30 2015-01-20 Mahle International Gmbh Cylinder head
WO2013081444A1 (en) * 2011-11-28 2013-06-06 CHEN, Kon Fook Double-top camshaft
US9598984B2 (en) 2012-11-29 2017-03-21 Schaeffler Technologies AG & Co. KG Camshaft adjusting device
US9492896B2 (en) * 2013-01-17 2016-11-15 Mahle International Gmbh Device for positioning multiple function elements
US20140196552A1 (en) * 2013-01-17 2014-07-17 Mahle International Gmbh Device for positioning multiple function elements
US9790987B2 (en) * 2013-03-06 2017-10-17 Mahle International Gmbh Bearing arrangement
US20140251257A1 (en) * 2013-03-06 2014-09-11 Mahle International Gmbh Bearing arrangement
JP2016518547A (ja) * 2013-04-29 2016-06-23 マーレ インターナショナル ゲゼルシャフト ミット ベシュレンクテル ハフツングＭＡＨＬＥ Ｉｎｔｅｒｎａｔｉｏｎａｌ ＧｍｂＨ シャフト及び関連実装の複数のエレメントが装備された複合的なハウジングを組み立てる方法
CN104343806A (zh) * 2013-07-26 2015-02-11 马勒国际有限公司 安装滚动轴承的轴
US20150027270A1 (en) * 2013-07-26 2015-01-29 Mahle International Gmbh Roller bearing mounted shaft
US9982705B2 (en) * 2013-07-26 2018-05-29 Mahle International Gmbh Roller bearing mounted shaft
US10480570B2 (en) 2016-03-07 2019-11-19 Mahle International Gmbh Method for producing a bearing assembly
USD902252S1 (en) * 2018-06-04 2020-11-17 Transportation IP Holdings, LLP Modular cam shaft
USD913336S1 (en) * 2018-06-04 2021-03-16 Transportation Ip Holdings, Llc Modular cam shaft
CN113187575A (zh) * 2020-01-29 2021-07-30 马勒国际有限公司 凸轮轴总成

Also Published As

Publication number Publication date
US8720055B2 (en) 2014-05-13
DE502008000295D1 (de) 2010-02-25
US20120255170A1 (en) 2012-10-11
DE102007024092A1 (de) 2008-11-27
EP1995417A1 (de) 2008-11-26
EP1995417B1 (de) 2010-01-06

Similar Documents

Publication Publication Date Title
US8720055B2 (en) Method of assembling a cam shaft that includes a thermal interference fit between the cam shaft and a bearing
JP5234191B2 (ja) 二重カム軸構造及び二重カム軸構造の組み立て方法
CN106812561B (zh) 可调节凸轮轴
US20150308299A1 (en) Bearing frame or cylinder head cover
US20060064872A1 (en) Camshaft and assembling method thereof
US10981212B2 (en) Method for joining a functional module, and functional module
US20140023496A1 (en) Bearing housing of an exhaust-gas turbocharger
US8028666B2 (en) Concentric camshaft with bearing sleeve and method of debris removal
US20140083382A1 (en) Camshaft for an internal combustion engine
JP2019507853A (ja) ターボチャージャー用密封装置
US20130047951A1 (en) Crankcase
JP2017101661A (ja) 可変カムシャフト
US20110083626A1 (en) Camshaft for an internal combustion engine
JP6514779B2 (ja) モジュール本体内でカムシャフトを組み立てる方法
JP3906754B2 (ja) クランク軸受
US7299777B2 (en) Fastening of a bearing bolt to a roller tappet
KR102510202B1 (ko) 유체 역학적으로 축선 방향으로 고정부를 갖는 플레인 베어링
US20060027193A1 (en) Switchable valve drive element of an internal combustion engine
US11267086B2 (en) Method for producing a constructed camshaft of an internal combustion engine
US10156281B2 (en) Assembly of a crankshaft end portion with a flywheel and a guide bearing, and related engine assembly
US10961875B2 (en) Bearing frame or cylinder head cover of an internal combustion engine
RU2276000C1 (ru) Способ ремонта подшипникового узла
CN101716714A (zh) 在受拉状态使球元件穿过孔口的凸轮轴组件加工方法
US8418666B2 (en) Multipiece camshaft assembly
JP2011149316A (ja) カムハウジングの組み付け方法

Legal Events

Date Code Title Description
AS Assignment

Owner name: MAHLE INTERNATIONAL GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:FLENDER, THOMAS;KREISIG, MICHAEL;SCHNEIDER, FALK;REEL/FRAME:021107/0594

Effective date: 20080526

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION