GB2402708B - Selectable 2-stroke/4-stroke valve actuation system - Google Patents

Selectable 2-stroke/4-stroke valve actuation system

Info

Publication number
GB2402708B
GB2402708B GB0314906A GB0314906A GB2402708B GB 2402708 B GB2402708 B GB 2402708B GB 0314906 A GB0314906 A GB 0314906A GB 0314906 A GB0314906 A GB 0314906A GB 2402708 B GB2402708 B GB 2402708B
Authority
GB
United Kingdom
Prior art keywords
stroke
selectable
actuation system
valve actuation
stroke valve
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
GB0314906A
Other versions
GB0314906D0 (en
GB2402708A (en
Inventor
Thomas Tsoi Hei Ma
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
Application filed by Individual filed Critical Individual
Publication of GB0314906D0 publication Critical patent/GB0314906D0/en
Publication of GB2402708A publication Critical patent/GB2402708A/en
Application granted granted Critical
Publication of GB2402708B publication Critical patent/GB2402708B/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
    • 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
    • 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
    • F01L1/20—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
    • 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
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/36—Valve-gear or valve arrangements, e.g. lift-valve gear peculiar to machines or engines of specific type other than four-stroke cycle
    • F01L1/38—Valve-gear or valve arrangements, e.g. lift-valve gear peculiar to machines or engines of specific type other than four-stroke cycle for engines with other than four-stroke cycle, e.g. with two-stroke cycle
    • 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
    • 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
    • F01L9/02—
    • 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
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B69/00—Internal-combustion engines convertible into other combustion-engine type, not provided for in F02B11/00; Internal-combustion engines of different types characterised by constructions facilitating use of same main engine-parts in different types
    • F02B69/06—Internal-combustion engines convertible into other combustion-engine type, not provided for in F02B11/00; Internal-combustion engines of different types characterised by constructions facilitating use of same main engine-parts in different types for different cycles, e.g. convertible from two-stroke to four stroke
    • 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
    • F01L1/14—Tappets; Push rods
    • F01L1/16—Silencing impact; Reducing wear
    • 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
    • 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
    • F01L2820/00—Details on specific features characterising valve gear arrangements
    • F01L2820/03—Auxiliary actuators
    • F01L2820/031—Electromagnets

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Valve Device For Special Equipments (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)
GB0314906A 2003-06-11 2003-06-26 Selectable 2-stroke/4-stroke valve actuation system Expired - Fee Related GB2402708B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB0313435.0A GB0313435D0 (en) 2003-06-11 2003-06-11 Selectable 2-stroke/4-stroke valve actuation system

Publications (3)

Publication Number Publication Date
GB0314906D0 GB0314906D0 (en) 2003-07-30
GB2402708A GB2402708A (en) 2004-12-15
GB2402708B true GB2402708B (en) 2006-04-26

Family

ID=27589843

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB0313435.0A Ceased GB0313435D0 (en) 2003-06-11 2003-06-11 Selectable 2-stroke/4-stroke valve actuation system
GB0314906A Expired - Fee Related GB2402708B (en) 2003-06-11 2003-06-26 Selectable 2-stroke/4-stroke valve actuation system

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB0313435.0A Ceased GB0313435D0 (en) 2003-06-11 2003-06-11 Selectable 2-stroke/4-stroke valve actuation system

Country Status (1)

Country Link
GB (2) GB0313435D0 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006011981A1 (en) * 2006-03-16 2007-09-20 Schaeffler Kg Gas exchanging valves controlling device for reciprocating internal-combustion engine, has cam stroke reducing unit variably reducing stroke of set of cams, and hydrostatic transmission unit varying volume in hydraulic pressure chamber
GB2443690B (en) * 2006-11-09 2011-10-12 Anthony Edgar Blackburn Retractable cam
CN101743384B (en) * 2007-06-01 2012-09-05 雅各布斯车辆系统公司 Variabale valve actuation system
GB2470025A (en) * 2009-05-06 2010-11-10 Thomas Tsoi Hei Ma Switchable valve actuation system for a selectable 2-stroke/ 4-stroke i.c engine
US8215276B2 (en) * 2009-09-02 2012-07-10 Delphi Technologies, Inc. Compact switchable hydraulic lash adjuster with hydraulic lost motion assist
EP3184779B1 (en) * 2015-12-24 2018-02-14 C.R.F. Società Consortile per Azioni System for variable actuation of a valve of an internal-combustion engine
SE541503C2 (en) * 2016-06-07 2019-10-22 Scania Cv Ab Four Stroke Internal Combustion Engine and thereto-related Method
SE541922C2 (en) 2017-03-31 2020-01-07 Scania Cv Ab Four-stroke Internal Combustion Engine and thereto related Vehicle and Method
GB2608166A (en) * 2021-06-24 2022-12-28 Mechadyne Int Ltd Cam switching mechanism

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5404851A (en) * 1992-08-22 1995-04-11 Man Nutzfahrzeuge Aktiengesellschaft Device for switching a combustion engine from one mode of operation to another mode of operation
US6244257B1 (en) * 1995-08-08 2001-06-12 Diesel Engine Retarders, Inc. Internal combustion engine with combined cam and electro-hydraulic engine valve control
US6257176B1 (en) * 1998-12-08 2001-07-10 Honda Giken Kogyo Kabushiki Kaisha Variable cycle internal combustion engine and controller thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5404851A (en) * 1992-08-22 1995-04-11 Man Nutzfahrzeuge Aktiengesellschaft Device for switching a combustion engine from one mode of operation to another mode of operation
US6244257B1 (en) * 1995-08-08 2001-06-12 Diesel Engine Retarders, Inc. Internal combustion engine with combined cam and electro-hydraulic engine valve control
US6257176B1 (en) * 1998-12-08 2001-07-10 Honda Giken Kogyo Kabushiki Kaisha Variable cycle internal combustion engine and controller thereof

Also Published As

Publication number Publication date
GB0314906D0 (en) 2003-07-30
GB0313435D0 (en) 2003-07-16
GB2402708A (en) 2004-12-15

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Legal Events

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

Effective date: 20090626