GB2428451B - Improvements to the adjustment of variable valve timing mechanisms of internal combustion engines - Google Patents

Improvements to the adjustment of variable valve timing mechanisms of internal combustion engines

Info

Publication number
GB2428451B
GB2428451B GB0514666A GB0514666A GB2428451B GB 2428451 B GB2428451 B GB 2428451B GB 0514666 A GB0514666 A GB 0514666A GB 0514666 A GB0514666 A GB 0514666A GB 2428451 B GB2428451 B GB 2428451B
Authority
GB
United Kingdom
Prior art keywords
adjustment
internal combustion
combustion engines
variable valve
valve timing
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
GB0514666A
Other versions
GB0514666D0 (en
GB2428451A (en
Inventor
Jean-Pierre Pirault
Samuel Lesley
Martin Love
Riccardo Meldolesi
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 GB0514666A priority Critical patent/GB2428451B/en
Publication of GB0514666D0 publication Critical patent/GB0514666D0/en
Publication of GB2428451A publication Critical patent/GB2428451A/en
Application granted granted Critical
Publication of GB2428451B publication Critical patent/GB2428451B/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
    • F01L1/20—Adjusting or compensating clearance
    • 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
    • F01L13/0021—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 rocker arm ratio
    • F01L13/0026—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 rocker arm ratio by means of an eccentric
    • 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
    • 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
    • F01L1/185—Overhead end-pivot rocking arms
    • 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
    • F01L1/20—Adjusting or compensating clearance
    • F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • F01L1/2405—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means of a hydraulic adjusting device located between the cylinder head and rocker arm
    • 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
    • F01L2303/01—Tools for producing, mounting or adjusting, e.g. some part of the distribution
    • 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
    • F01L2305/00—Valve arrangements comprising rollers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
GB0514666A 2005-07-16 2005-07-16 Improvements to the adjustment of variable valve timing mechanisms of internal combustion engines Expired - Fee Related GB2428451B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0514666A GB2428451B (en) 2005-07-16 2005-07-16 Improvements to the adjustment of variable valve timing mechanisms of internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB0514666A GB2428451B (en) 2005-07-16 2005-07-16 Improvements to the adjustment of variable valve timing mechanisms of internal combustion engines

Publications (3)

Publication Number Publication Date
GB0514666D0 GB0514666D0 (en) 2005-08-24
GB2428451A GB2428451A (en) 2007-01-31
GB2428451B true GB2428451B (en) 2010-07-14

Family

ID=34897360

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0514666A Expired - Fee Related GB2428451B (en) 2005-07-16 2005-07-16 Improvements to the adjustment of variable valve timing mechanisms of internal combustion engines

Country Status (1)

Country Link
GB (1) GB2428451B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012001633A1 (en) * 2012-01-30 2013-08-01 Kolbenschmidt Pierburg Innovations Gmbh Mechanically controllable valve train arrangement

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2410061A (en) * 2004-01-13 2005-07-20 Jean-Pierre Pirault Variable Valve Timing Mechanism

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2410061A (en) * 2004-01-13 2005-07-20 Jean-Pierre Pirault Variable Valve Timing Mechanism

Also Published As

Publication number Publication date
GB0514666D0 (en) 2005-08-24
GB2428451A (en) 2007-01-31

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Legal Events

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

Effective date: 20110716