GB2434404B - Improvements to variable valve actuation using slideable, latching cam lobes - Google Patents

Improvements to variable valve actuation using slideable, latching cam lobes

Info

Publication number
GB2434404B
GB2434404B GB0600939A GB0600939A GB2434404B GB 2434404 B GB2434404 B GB 2434404B GB 0600939 A GB0600939 A GB 0600939A GB 0600939 A GB0600939 A GB 0600939A GB 2434404 B GB2434404 B GB 2434404B
Authority
GB
United Kingdom
Prior art keywords
slideable
variable valve
valve actuation
cam lobes
latching cam
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
GB0600939A
Other versions
GB0600939D0 (en
GB2434404A (en
Inventor
Jean-Pierre Pirault
Samuel Lesley
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.)
Powertrain Technology Ltd
Original Assignee
Powertrain Technology 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 Powertrain Technology Ltd filed Critical Powertrain Technology Ltd
Priority to GB0600939A priority Critical patent/GB2434404B/en
Publication of GB0600939D0 publication Critical patent/GB0600939D0/en
Publication of GB2434404A publication Critical patent/GB2434404A/en
Application granted granted Critical
Publication of GB2434404B publication Critical patent/GB2434404B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • 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
    • 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
    • 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
    • F16H—GEARING
    • F16H53/00—Cams ; Non-rotary cams; or cam-followers, e.g. rollers for gearing mechanisms
    • F16H53/02—Single-track cams for single-revolution cycles; Camshafts with such cams
    • F16H53/04—Adjustable 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
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/08—Shape of cams

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Valve Device For Special Equipments (AREA)
GB0600939A 2006-01-18 2006-01-18 Improvements to variable valve actuation using slideable, latching cam lobes Expired - Fee Related GB2434404B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0600939A GB2434404B (en) 2006-01-18 2006-01-18 Improvements to variable valve actuation using slideable, latching cam lobes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0600939A GB2434404B (en) 2006-01-18 2006-01-18 Improvements to variable valve actuation using slideable, latching cam lobes

Publications (3)

Publication Number Publication Date
GB0600939D0 GB0600939D0 (en) 2006-02-22
GB2434404A GB2434404A (en) 2007-07-25
GB2434404B true GB2434404B (en) 2010-11-03

Family

ID=35998198

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0600939A Expired - Fee Related GB2434404B (en) 2006-01-18 2006-01-18 Improvements to variable valve actuation using slideable, latching cam lobes

Country Status (1)

Country Link
GB (1) GB2434404B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009055868A1 (en) * 2009-11-26 2011-06-01 Neumayer Tekfor Holding Gmbh camshaft
ITRM20100155A1 (en) * 2010-04-02 2011-10-03 Matteo Nargiso INTERNAL COMBUSTION ENGINE WITH CRANKSHAFT WITH VARIABLE ECCENTRICITY

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2385888A (en) * 2002-06-21 2003-09-03 Jean-Pierre Pirault Variable lift i.c. engine camshaft assembly with selectively slideable camlobes
WO2004109068A1 (en) * 2003-06-02 2004-12-16 Mahle Ventiltrieb Gmbh Camshaft, especially for an internal combustion engine of a motor vehicle, comprising shiftable cams

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2385888A (en) * 2002-06-21 2003-09-03 Jean-Pierre Pirault Variable lift i.c. engine camshaft assembly with selectively slideable camlobes
WO2004109068A1 (en) * 2003-06-02 2004-12-16 Mahle Ventiltrieb Gmbh Camshaft, especially for an internal combustion engine of a motor vehicle, comprising shiftable cams

Also Published As

Publication number Publication date
GB0600939D0 (en) 2006-02-22
GB2434404A (en) 2007-07-25

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Legal Events

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

Effective date: 20210118