GB0613727D0 - Improvements to 2-step variable timing mechanisms - Google Patents

Improvements to 2-step variable timing mechanisms

Info

Publication number
GB0613727D0
GB0613727D0 GBGB0613727.7A GB0613727A GB0613727D0 GB 0613727 D0 GB0613727 D0 GB 0613727D0 GB 0613727 A GB0613727 A GB 0613727A GB 0613727 D0 GB0613727 D0 GB 0613727D0
Authority
GB
United Kingdom
Prior art keywords
variable timing
timing mechanisms
step variable
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.)
Ceased
Application number
GBGB0613727.7A
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 GBGB0613727.7A priority Critical patent/GB0613727D0/en
Publication of GB0613727D0 publication Critical patent/GB0613727D0/en
Priority to GB0620445A priority patent/GB2440010A/en
Ceased 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
    • F01L13/0015—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
    • F01L13/0036—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 the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
    • 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
    • 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
    • F01L13/08—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for decompression, e.g. during starting; for changing compression ratio
    • F01L13/085—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for decompression, e.g. during starting; for changing compression ratio the valve-gear having an auxiliary cam protruding from the main cam profile
    • 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
    • F01L2800/00—Methods of operation using a variable valve timing mechanism
    • F01L2800/10—Providing exhaust gas recirculation [EGR]
    • 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
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/0203—Variable control of intake and exhaust valves
    • F02D13/0207—Variable control of intake and exhaust valves changing valve lift or valve lift and timing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/0261—Controlling the valve overlap
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D13/00—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing
    • F02D13/02—Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing during engine operation
    • F02D13/0273—Multiple actuations of a valve within an engine cycle
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
    • F02M26/01—Internal exhaust gas recirculation, i.e. wherein the residual exhaust gases are trapped in the cylinder or pushed back from the intake or the exhaust manifold into the combustion chamber without the use of additional passages
GBGB0613727.7A 2006-07-11 2006-07-11 Improvements to 2-step variable timing mechanisms Ceased GB0613727D0 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GBGB0613727.7A GB0613727D0 (en) 2006-07-11 2006-07-11 Improvements to 2-step variable timing mechanisms
GB0620445A GB2440010A (en) 2006-07-11 2006-10-16 Camshaft assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GBGB0613727.7A GB0613727D0 (en) 2006-07-11 2006-07-11 Improvements to 2-step variable timing mechanisms

Publications (1)

Publication Number Publication Date
GB0613727D0 true GB0613727D0 (en) 2006-08-23

Family

ID=36955416

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB0613727.7A Ceased GB0613727D0 (en) 2006-07-11 2006-07-11 Improvements to 2-step variable timing mechanisms
GB0620445A Withdrawn GB2440010A (en) 2006-07-11 2006-10-16 Camshaft assembly

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB0620445A Withdrawn GB2440010A (en) 2006-07-11 2006-10-16 Camshaft assembly

Country Status (1)

Country Link
GB (2) GB0613727D0 (en)

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3144009A (en) * 1962-05-14 1964-08-11 Dick Schoep Variable valve timing mechanism
US5103779A (en) * 1989-04-18 1992-04-14 Hare Sr Nicholas S Electro-rheological valve control mechanism
JPH03202603A (en) * 1989-12-29 1991-09-04 Toyota Autom Loom Works Ltd Opening/closing mechanism for valve in internal combustion engine
JPH07180515A (en) * 1993-12-24 1995-07-18 Toyota Motor Corp Valve gear device for internal combustion engine
AUPN567195A0 (en) * 1995-09-27 1995-10-19 Orbital Engine Company (Australia) Proprietary Limited Valve timing for four stroke internal combustion engines
DE10038916B4 (en) * 2000-08-09 2004-02-19 Fev Motorentechnik Gmbh Piston engine with gas exchange valves that can be controlled to generate additional braking power
GB2385888B (en) * 2002-06-21 2004-05-05 Jean-Pierre Pirault Improvements to latchable cam lobe systems for poppet valve motion control
EP1518042B1 (en) * 2003-06-02 2008-11-26 MAHLE Ventiltrieb GmbH Camshaft, especially for an internal combustion engine of a motor vehicle, comprising shiftable cams
DE10337430A1 (en) * 2003-08-13 2005-03-17 Fev Motorentechnik Gmbh Internal combustion engine with shift cam

Also Published As

Publication number Publication date
GB2440010A (en) 2008-01-16
GB0620445D0 (en) 2006-11-22

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Legal Events

Date Code Title Description
AT Applications terminated before publication under section 16(1)