GB2410061B - Improvements to variable valve timing mechanisms - Google Patents

Improvements to variable valve timing mechanisms

Info

Publication number
GB2410061B
GB2410061B GB0413944A GB0413944A GB2410061B GB 2410061 B GB2410061 B GB 2410061B GB 0413944 A GB0413944 A GB 0413944A GB 0413944 A GB0413944 A GB 0413944A GB 2410061 B GB2410061 B GB 2410061B
Authority
GB
United Kingdom
Prior art keywords
variable valve
valve timing
timing mechanisms
mechanisms
variable
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.)
Expired - Fee Related
Application number
GB0413944A
Other versions
GB2410061A (en
GB0413944D0 (en
Inventor
Jean-Pierre Pirault
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.)
Individual
Original Assignee
Individual
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
Priority claimed from GB0400764A external-priority patent/GB0400764D0/en
Application filed by Individual filed Critical Individual
Priority to PCT/GB2004/002766 priority Critical patent/WO2005068788A1/en
Publication of GB0413944D0 publication Critical patent/GB0413944D0/en
Priority to PCT/GB2005/000095 priority patent/WO2005071233A2/en
Publication of GB2410061A publication Critical patent/GB2410061A/en
Application granted granted Critical
Publication of GB2410061B publication Critical patent/GB2410061B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • 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
    • F01L1/053—Camshafts overhead type
    • 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
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0063—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of cam contact point by displacing an intermediate lever or wedge-shaped intermediate element, e.g. Tourtelot
    • 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
    • F01L1/08—Shape of cams
    • 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
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • 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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0005—Deactivating valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L2301/00—Using particular materials
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
GB0413944A 2004-01-13 2004-05-24 Improvements to variable valve timing mechanisms Expired - Fee Related GB2410061B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/GB2004/002766 WO2005068788A1 (en) 2004-01-13 2004-06-28 Improvements to variable valve timing mechanisms
PCT/GB2005/000095 WO2005071233A2 (en) 2004-01-13 2005-01-13 Improvements to variable timing mechanisms

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0400764A GB0400764D0 (en) 2004-01-13 2004-01-13 Improvements to variable valve timing
GB0407213A GB0407213D0 (en) 2004-01-13 2004-03-30 Improvements to variable valve timing

Publications (3)

Publication Number Publication Date
GB0413944D0 GB0413944D0 (en) 2004-07-28
GB2410061A GB2410061A (en) 2005-07-20
GB2410061B true GB2410061B (en) 2006-03-08

Family

ID=32827059

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0413944A Expired - Fee Related GB2410061B (en) 2004-01-13 2004-05-24 Improvements to variable valve timing mechanisms

Country Status (1)

Country Link
GB (1) GB2410061B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2428274B (en) * 2005-07-14 2010-08-11 Powertrain Technology Ltd Improvements to internal combustion engine valve-actuation mechanisms
GB2428451B (en) * 2005-07-16 2010-07-14 Powertrain Technology Ltd Improvements to the adjustment of variable valve timing mechanisms of internal combustion engines
JP4293167B2 (en) * 2005-07-25 2009-07-08 三菱自動車工業株式会社 Variable valve operating device for internal combustion engine
US8459219B2 (en) * 2007-08-10 2013-06-11 Nissan Motor Co., Ltd. Variable valve device
JP5332148B2 (en) 2007-08-10 2013-11-06 日産自動車株式会社 Engine valve mechanism
CN102817660A (en) * 2012-09-11 2012-12-12 优华劳斯汽车***（上海）有限公司 Variable air valve structure of internal-combustion engine
EP3623592A1 (en) * 2018-09-17 2020-03-18 Uwe Eisenbeis Variable valvetrain having lubricant supply system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11210434A (en) * 1998-01-22 1999-08-03 Unisia Jecs Corp Variable valve system of internal combustion engine
US5937809A (en) * 1997-03-20 1999-08-17 General Motors Corporation Variable valve timing mechanisms
FR2849465A1 (en) * 2002-12-27 2004-07-02 Renault Sa Motor vehicle internal combustion engine poppet valve drive has camshaft with cam timing adjuster having adjuster cylinder and linkage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5937809A (en) * 1997-03-20 1999-08-17 General Motors Corporation Variable valve timing mechanisms
JPH11210434A (en) * 1998-01-22 1999-08-03 Unisia Jecs Corp Variable valve system of internal combustion engine
FR2849465A1 (en) * 2002-12-27 2004-07-02 Renault Sa Motor vehicle internal combustion engine poppet valve drive has camshaft with cam timing adjuster having adjuster cylinder and linkage

Also Published As

Publication number Publication date
GB2410061A (en) 2005-07-20
GB0413944D0 (en) 2004-07-28

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20110524