GB1095017A - Automatic variable valve timing device for internal combustion engines - Google Patents

Automatic variable valve timing device for internal combustion engines

Info

Publication number
GB1095017A
GB1095017A GB1796065A GB1796065A GB1095017A GB 1095017 A GB1095017 A GB 1095017A GB 1796065 A GB1796065 A GB 1796065A GB 1796065 A GB1796065 A GB 1796065A GB 1095017 A GB1095017 A GB 1095017A
Authority
GB
United Kingdom
Prior art keywords
shaft
gear
cam
pin
spring
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
Application number
GB1796065A
Inventor
James William Barrett
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.)
JOHN ROBERT CRIBBS
Original Assignee
JOHN ROBERT CRIBBS
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 JOHN ROBERT CRIBBS filed Critical JOHN ROBERT CRIBBS
Priority to GB1796065A priority Critical patent/GB1095017A/en
Publication of GB1095017A publication Critical patent/GB1095017A/en
Expired 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
    • F01L1/34409—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 by torque-responsive means

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

1,095,017. I.C. engine valve gear. J.R. CRIBBS. April 27, 1966 [April 28, 1965], No. 17960/65. Heading F1B. In I. C. valve timing gear a resilient drive coupling is arranged between the cam-shaft and the crank-shaft so as to bias the cam-shaft toward an advanced position relative to the crank-shaft, the cam-shaft moving toward a retarded position when the coupling is transmitting an increased torque due to acceleration and/or operation at increased speeds. Crank-shaft 16 drives the cam-shaft 25 through gear 14, chain 18, gear 38, pin 46, spring 42, pin 44 and hub 22. When rotation is stopped spring 42 maintains pin 46 at the end of slot 48 farthest from pin 44. As the speed of gear 38 increases pin 46 moves towards the other end of slot 48 thereby altering the relative angular positions of gear 38 and cam-shaft 12. In another embodiment a gear (56) Fig. 3 (not shown) is rotatably mounted on a cam-shaft flange (52). The drive is transmitted through a spring (62) between bolts (64) mounted respectively in the gear (50) and flange (52). In another embodiment a leaf spring 88, Fig. 5, abuts an adjustable elliptical stop 94 whereby the spring-loading can be varied.
GB1796065A 1965-04-28 1965-04-28 Automatic variable valve timing device for internal combustion engines Expired GB1095017A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1796065A GB1095017A (en) 1965-04-28 1965-04-28 Automatic variable valve timing device for internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1796065A GB1095017A (en) 1965-04-28 1965-04-28 Automatic variable valve timing device for internal combustion engines

Publications (1)

Publication Number Publication Date
GB1095017A true GB1095017A (en) 1967-12-13

Family

ID=10104233

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1796065A Expired GB1095017A (en) 1965-04-28 1965-04-28 Automatic variable valve timing device for internal combustion engines

Country Status (1)

Country Link
GB (1) GB1095017A (en)

Cited By (3)

* 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
WO1992004532A1 (en) * 1990-09-12 1992-03-19 Ford Motor Company Limited Internal combustion engine having variable event valve timing
EP1443184A1 (en) * 2003-01-29 2004-08-04 Ford Global Technologies, Inc., A subsidiary of Ford Motor Company Variable camshaft drive

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
WO1992004532A1 (en) * 1990-09-12 1992-03-19 Ford Motor Company Limited Internal combustion engine having variable event valve timing
US5297507A (en) * 1990-09-12 1994-03-29 Ford Motor Company Internal combustion engine having variable event timing
EP1443184A1 (en) * 2003-01-29 2004-08-04 Ford Global Technologies, Inc., A subsidiary of Ford Motor Company Variable camshaft drive

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