GB201212683D0 - A concentric camshaft arrangement - Google Patents

A concentric camshaft arrangement

Info

Publication number
GB201212683D0
GB201212683D0 GBGB1212683.5A GB201212683A GB201212683D0 GB 201212683 D0 GB201212683 D0 GB 201212683D0 GB 201212683 A GB201212683 A GB 201212683A GB 201212683 D0 GB201212683 D0 GB 201212683D0
Authority
GB
United Kingdom
Prior art keywords
outer tube
camshaft
oil feed
inner shaft
radial clearance
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Withdrawn
Application number
GBGB1212683.5A
Other versions
GB2504100A (en
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.)
Mechadyne International Ltd
Original Assignee
MECHADYNE HOLDINGS Ltd
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 MECHADYNE HOLDINGS Ltd filed Critical MECHADYNE HOLDINGS Ltd
Priority to GB1212683.5A priority Critical patent/GB2504100A/en
Publication of GB201212683D0 publication Critical patent/GB201212683D0/en
Priority to CN201380036920.2A priority patent/CN104428497B/en
Priority to PCT/IB2013/055764 priority patent/WO2014013409A2/en
Priority to US14/412,716 priority patent/US20150192043A1/en
Priority to EP13779347.7A priority patent/EP2875217B1/en
Publication of GB2504100A publication Critical patent/GB2504100A/en
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
    • F01M9/10—Lubrication of valve gear or auxiliaries
    • F01M9/102—Lubrication of valve gear or auxiliaries of 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
    • 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
    • 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
    • F01L1/34413—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 composite camshafts, e.g. with cams being able to move relative to the camshaft
    • 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
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/047—Camshafts
    • F01L2001/0471—Assembled camshafts
    • F01L2001/0473—Composite camshafts, e.g. with cams or cam sleeve being able to move relative to the inner camshaft or a cam adjusting rod
    • 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
    • F01L2001/34423—Details relating to the hydraulic feeding circuit
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2810/00—Arrangements solving specific problems in relation with valve gears
    • F01L2810/02—Lubrication
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)

Abstract

A concentric camshaft arrangement comprises an inner shaft 112 and an outer tube 114, concentrically arranged with the inner shaft and operable to rotate relative to a cylinder head 121. A first set of lobes 116 is fixed to the outer tube for rotation therewith. A second set of lobes 118 is attached to the inner shaft for rotation therewith and relative to the outer tube. Rolling bearings 144 are arranged in a housing and have a radial clearance. A camshaft oil feed 122 for supplying oil for lubrication of the camshaft is defined by an oil feed clearance between the outer surface of the outer tube 114 and an inner surface of the cylinder head 121 and wherein the oil feed radial clearance is greater than the rolling bearing radial clearance. This arrangement ensures that all the camshaft loads are supported by the bearings and not shared by the oil feed.
GB1212683.5A 2012-07-17 2012-07-17 A concentric camshaft supported by roller bearings Withdrawn GB2504100A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB1212683.5A GB2504100A (en) 2012-07-17 2012-07-17 A concentric camshaft supported by roller bearings
CN201380036920.2A CN104428497B (en) 2012-07-17 2013-07-12 Concentric camshaft device
PCT/IB2013/055764 WO2014013409A2 (en) 2012-07-17 2013-07-12 A concentric camshaft arrangement
US14/412,716 US20150192043A1 (en) 2012-07-17 2013-07-12 Concentric camshaft arrangement
EP13779347.7A EP2875217B1 (en) 2012-07-17 2013-07-12 A concentric camshaft arrangement

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1212683.5A GB2504100A (en) 2012-07-17 2012-07-17 A concentric camshaft supported by roller bearings

Publications (2)

Publication Number Publication Date
GB201212683D0 true GB201212683D0 (en) 2012-08-29
GB2504100A GB2504100A (en) 2014-01-22

Family

ID=46799733

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1212683.5A Withdrawn GB2504100A (en) 2012-07-17 2012-07-17 A concentric camshaft supported by roller bearings

Country Status (5)

Country Link
US (1) US20150192043A1 (en)
EP (1) EP2875217B1 (en)
CN (1) CN104428497B (en)
GB (1) GB2504100A (en)
WO (1) WO2014013409A2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011070976A1 (en) * 2009-12-07 2011-06-16 三菱自動車工業株式会社 Variable valve gear for internal combustion engine
DE102012221876B4 (en) * 2012-11-29 2021-01-07 Schaeffler Technologies AG & Co. KG Camshaft adjustment device
DE102014104994A1 (en) * 2014-04-08 2015-10-08 Thyssenkrupp Presta Teccenter Ag adjustable camshaft
DE102014214125B4 (en) * 2014-07-21 2018-01-04 Schaeffler Technologies AG & Co. KG Adjusting device for adjusting the timing of an internal combustion engine
CN105351032A (en) * 2015-11-18 2016-02-24 重庆小康工业集团股份有限公司 Lubricating system for cam shaft
DE102016109444A1 (en) * 2016-05-23 2017-11-23 Thyssenkrupp Ag System of a camshaft and a camshaft sleeve
US10041384B2 (en) * 2016-05-31 2018-08-07 Gm Global Technology Operations Control valve
CN110848365B (en) * 2018-08-21 2022-03-11 上海汽车集团股份有限公司 Sliding cam mechanism
DE102021116598A1 (en) 2021-06-28 2022-12-29 Schaeffler Technologies AG & Co. KG camshaft adjuster

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2151834A (en) * 1936-04-18 1939-03-28 Bugatti Ettore Distribution control mechanism
DE19645688C2 (en) * 1996-11-06 2002-09-26 Ina Schaeffler Kg Device for changing the timing of an internal combustion engine
DE19802484C2 (en) * 1998-01-23 2000-06-08 Daimler Chrysler Ag Method and device for producing assembled camshafts
US6691656B1 (en) * 2002-11-27 2004-02-17 Delphi Technologies, Inc. Cam phaser hydraulic seal assembly
DE202005021715U1 (en) * 2005-02-03 2009-07-02 Mahle International Gmbh Camshaft with mutually rotatable cam for motor vehicles in particular
JP2006226183A (en) * 2005-02-17 2006-08-31 Jtekt Corp Camshaft device and its assembling method
GB2431977A (en) * 2005-11-02 2007-05-09 Mechadyne Plc Camshaft assembly
DE102006028611B4 (en) * 2006-06-22 2014-12-31 Mahle International Gmbh Adjustable camshaft
JP4747159B2 (en) * 2007-12-11 2011-08-17 本田技研工業株式会社 Valve operating apparatus provided with phase control means
DE102008039038B4 (en) * 2008-08-21 2021-01-28 Schaeffler Technologies AG & Co. KG Camshaft adjuster
JP2010196488A (en) * 2009-02-23 2010-09-09 Mitsubishi Motors Corp Engine with variable valve system
DE102009049217A1 (en) * 2009-10-13 2011-04-28 Mahle International Gmbh Internal combustion engine with at least one camshaft
DE102010019130B4 (en) * 2010-04-30 2021-02-04 Mahle International Gmbh Cylinder head
JP5488296B2 (en) * 2010-07-26 2014-05-14 株式会社ジェイテクト Rolling bearing and camshaft device
DE102011077563B4 (en) * 2011-06-15 2022-08-11 Mahle International Gmbh internal combustion engine
DE102012214963A1 (en) * 2012-08-23 2014-02-27 Schaeffler Technologies AG & Co. KG Radial camshaft pressure medium transmission

Also Published As

Publication number Publication date
EP2875217A2 (en) 2015-05-27
WO2014013409A2 (en) 2014-01-23
CN104428497A (en) 2015-03-18
EP2875217B1 (en) 2016-03-02
US20150192043A1 (en) 2015-07-09
CN104428497B (en) 2017-06-13
WO2014013409A3 (en) 2014-03-06
GB2504100A (en) 2014-01-22

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Legal Events

Date Code Title Description
COOA Change in applicant's name or ownership of the application

Owner name: MECHADYNE INTERNATIONAL LIMITED

Free format text: FORMER OWNER: MECHADYNE HOLDINGS LIMITED

WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)