FR2261413A1 - Four stroke engine with variable timing - has cams with controlled variable angular relationship to camshaft - Google Patents

Four stroke engine with variable timing - has cams with controlled variable angular relationship to camshaft

Info

Publication number
FR2261413A1
FR2261413A1 FR7405675A FR7405675A FR2261413A1 FR 2261413 A1 FR2261413 A1 FR 2261413A1 FR 7405675 A FR7405675 A FR 7405675A FR 7405675 A FR7405675 A FR 7405675A FR 2261413 A1 FR2261413 A1 FR 2261413A1
Authority
FR
France
Prior art keywords
camshaft
cams
cam
stroke engine
angular relationship
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
FR7405675A
Other languages
French (fr)
Other versions
FR2261413B1 (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.)
BAGUENA MICHEL FR
Original Assignee
BAGUENA MICHEL FR
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 BAGUENA MICHEL FR filed Critical BAGUENA MICHEL FR
Priority to FR7405675A priority Critical patent/FR2261413A1/en
Priority to DE19742412330 priority patent/DE2412330A1/en
Priority to JP49031436A priority patent/JPS50113622A/ja
Publication of FR2261413A1 publication Critical patent/FR2261413A1/en
Application granted granted Critical
Publication of FR2261413B1 publication Critical patent/FR2261413B1/fr
Granted 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
    • 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
    • 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
    • F01L1/34413—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 using composite camshafts, e.g. with cams being able to move relative to the camshaft
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Valve Device For Special Equipments (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

The camshaft has a central collar which has a radial slot on each face. The slots are positioned at 180 deg. to each other. The cams are mounted on the shaft but are free to rotate. Each cam has a radial groove. Between each cam and the collar there is a ring provided with two diametrically opposite cylindrical bosses. One of these bosses engages with the radial groove in the cam, the other boss engages with the groove in the collar. The ring is surrounded by a needle roller bearing. Varying the eccentricity of the bearing relative to the shaft causes relative rotation between the cam and the shaft.
FR7405675A 1974-02-20 1974-02-20 Four stroke engine with variable timing - has cams with controlled variable angular relationship to camshaft Granted FR2261413A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR7405675A FR2261413A1 (en) 1974-02-20 1974-02-20 Four stroke engine with variable timing - has cams with controlled variable angular relationship to camshaft
DE19742412330 DE2412330A1 (en) 1974-02-20 1974-03-14 METHOD OF VARIATING THE CYCLE CONTROL IN FOUR-STROKE ENGINES AND CAMSHAFT FOR EXECUTING THE METHOD
JP49031436A JPS50113622A (en) 1974-02-20 1974-03-19

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7405675A FR2261413A1 (en) 1974-02-20 1974-02-20 Four stroke engine with variable timing - has cams with controlled variable angular relationship to camshaft

Publications (2)

Publication Number Publication Date
FR2261413A1 true FR2261413A1 (en) 1975-09-12
FR2261413B1 FR2261413B1 (en) 1980-03-07

Family

ID=9135154

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7405675A Granted FR2261413A1 (en) 1974-02-20 1974-02-20 Four stroke engine with variable timing - has cams with controlled variable angular relationship to camshaft

Country Status (3)

Country Link
JP (1) JPS50113622A (en)
DE (1) DE2412330A1 (en)
FR (1) FR2261413A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2569226A1 (en) * 1984-08-16 1986-02-21 Deliaval Jean Luc Method and device for modifying a motion law, such as a valve-lifting law
EP0179581A2 (en) * 1984-10-20 1986-04-30 Austin Rover Group Limited Variable valve timing mechanism
EP0234845A1 (en) * 1986-02-20 1987-09-02 Ford Motor Company Limited Cam drive mechanism
WO1988008919A1 (en) * 1987-05-14 1988-11-17 National Research Development Corporation Improvements in or relating to driving connections between two rotatable bodies
WO1995016108A1 (en) * 1993-12-08 1995-06-15 Mechadyne Limited Variable valve timing

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5797106U (en) * 1980-12-05 1982-06-15
JPH01169657U (en) * 1988-05-23 1989-11-30
JP2644408B2 (en) * 1991-03-29 1997-08-25 アーウィン コロステンスキー Continuous variable valve timing mechanism for internal combustion engine
JP3494439B2 (en) * 1995-05-25 2004-02-09 三菱自動車工業株式会社 Variable valve mechanism
US7913657B2 (en) * 2007-02-23 2011-03-29 Honda Motor Co., Ltd. Variable valve timing mechanism
KR101637296B1 (en) 2014-12-09 2016-07-07 현대자동차 주식회사 Continuous varible vavle duration apparatus and engine provided with the same
KR101619389B1 (en) 2014-12-10 2016-05-18 현대자동차 주식회사 Continuous varible vavle duration apparatus and engine provided with the same
KR101628085B1 (en) 2015-06-22 2016-06-08 현대자동차 주식회사 Continuous variable vavle duration apparatus and engine provided with the same
KR101628088B1 (en) 2015-07-07 2016-06-08 현대자동차 주식회사 Continuous variable vavle duration apparatus and engine provided with the same
KR101655234B1 (en) 2015-12-11 2016-09-07 현대자동차 주식회사 Continuous varible vavle duration apparatus and engine provided with the same

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2569226A1 (en) * 1984-08-16 1986-02-21 Deliaval Jean Luc Method and device for modifying a motion law, such as a valve-lifting law
EP0179581A2 (en) * 1984-10-20 1986-04-30 Austin Rover Group Limited Variable valve timing mechanism
EP0179581A3 (en) * 1984-10-20 1987-04-22 Austin Rover Group Limited Variable valve timing mechanism
EP0234845A1 (en) * 1986-02-20 1987-09-02 Ford Motor Company Limited Cam drive mechanism
WO1988008919A1 (en) * 1987-05-14 1988-11-17 National Research Development Corporation Improvements in or relating to driving connections between two rotatable bodies
US4872428A (en) * 1987-05-14 1989-10-10 National Research Development Corporation Improvements in or relating to driving connections between two rotatable bodies
WO1995016108A1 (en) * 1993-12-08 1995-06-15 Mechadyne Limited Variable valve timing

Also Published As

Publication number Publication date
DE2412330A1 (en) 1975-08-28
JPS50113622A (en) 1975-09-05
FR2261413B1 (en) 1980-03-07

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Legal Events

Date Code Title Description
ST Notification of lapse