FR2305589A1 - Four stroke engine valve drive - with timing variation achieved by changing eccentricity of three link system driving cam shaft - Google Patents

Four stroke engine valve drive - with timing variation achieved by changing eccentricity of three link system driving cam shaft

Info

Publication number
FR2305589A1
FR2305589A1 FR7509587A FR7509587A FR2305589A1 FR 2305589 A1 FR2305589 A1 FR 2305589A1 FR 7509587 A FR7509587 A FR 7509587A FR 7509587 A FR7509587 A FR 7509587A FR 2305589 A1 FR2305589 A1 FR 2305589A1
Authority
FR
France
Prior art keywords
cam shaft
valve drive
engine valve
stroke engine
driving 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.)
Granted
Application number
FR7509587A
Other languages
French (fr)
Other versions
FR2305589B1 (en
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
Priority to FR7509587A priority Critical patent/FR2305589A1/en
Publication of FR2305589A1 publication Critical patent/FR2305589A1/en
Application granted granted Critical
Publication of FR2305589B1 publication Critical patent/FR2305589B1/fr
Granted legal-status Critical Current

Links

Classifications

    • 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
    • F02D13/0223—Variable control of the intake valves only
    • 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
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/356—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear making the angular relationship oscillate, e.g. non-homokinetic drive
    • 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
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Abstract

The engine cam shaft drive is transmitted from the cam shaft to a crank which is connected by an intermediate lever to a second crank mounted on the cam shaft. The angle between these cranks can be varied by a mechanism which connects the intermediate lever to a point on a rotating member eccentric to the cam shaft. Changing the degree of eccentricity between crankshaft and rotating member changes the angle between the cranks and so changes the valve timing.
FR7509587A 1975-03-27 1975-03-27 Four stroke engine valve drive - with timing variation achieved by changing eccentricity of three link system driving cam shaft Granted FR2305589A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7509587A FR2305589A1 (en) 1975-03-27 1975-03-27 Four stroke engine valve drive - with timing variation achieved by changing eccentricity of three link system driving cam shaft

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7509587A FR2305589A1 (en) 1975-03-27 1975-03-27 Four stroke engine valve drive - with timing variation achieved by changing eccentricity of three link system driving cam shaft

Publications (2)

Publication Number Publication Date
FR2305589A1 true FR2305589A1 (en) 1976-10-22
FR2305589B1 FR2305589B1 (en) 1980-03-07

Family

ID=9153173

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7509587A Granted FR2305589A1 (en) 1975-03-27 1975-03-27 Four stroke engine valve drive - with timing variation achieved by changing eccentricity of three link system driving cam shaft

Country Status (1)

Country Link
FR (1) FR2305589A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4505235A (en) * 1980-01-02 1985-03-19 National Research Development Corporation Valve timing mechanisms of internal combustion engines
USRE31917E (en) * 1976-04-02 1985-06-18 Valve timing mechanisms
WO1996018807A1 (en) * 1994-12-13 1996-06-20 Erwin Korostenski Valve gear mechanism for an internal combustion engine
WO2002081872A1 (en) * 2001-04-05 2002-10-17 Stephen William Mitchell Variable valve timing system

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE31917E (en) * 1976-04-02 1985-06-18 Valve timing mechanisms
US4505235A (en) * 1980-01-02 1985-03-19 National Research Development Corporation Valve timing mechanisms of internal combustion engines
WO1996018807A1 (en) * 1994-12-13 1996-06-20 Erwin Korostenski Valve gear mechanism for an internal combustion engine
US5884592A (en) * 1994-12-13 1999-03-23 Korostenski; Erwin Valve gear mechanism for an internal combustion engine
WO2002081872A1 (en) * 2001-04-05 2002-10-17 Stephen William Mitchell Variable valve timing system
GB2389628B (en) * 2001-04-05 2005-08-17 Stephen William Mitchell Variable valve timing system
US7104229B2 (en) 2001-04-05 2006-09-12 Stephen William Mitchell Variable valve timing system

Also Published As

Publication number Publication date
FR2305589B1 (en) 1980-03-07

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Legal Events

Date Code Title Description
ST Notification of lapse