GB1132391A - Improvements in and relating to compression relief mechanisms - Google Patents

Improvements in and relating to compression relief mechanisms

Info

Publication number
GB1132391A
GB1132391A GB57666A GB57666A GB1132391A GB 1132391 A GB1132391 A GB 1132391A GB 57666 A GB57666 A GB 57666A GB 57666 A GB57666 A GB 57666A GB 1132391 A GB1132391 A GB 1132391A
Authority
GB
United Kingdom
Prior art keywords
plunger
valve
compression
cam
flyweight
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
GB57666A
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.)
Tecumseh Products Co
Original Assignee
Tecumseh Products Co
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 Tecumseh Products Co filed Critical Tecumseh Products Co
Publication of GB1132391A publication Critical patent/GB1132391A/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
    • 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
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
    • F02B2275/22—Side valves

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

1,132,391. Compression relief devices. TECUMSEH PRODUCTS CO. Jan. 6, 1966 [Jan. 12, 1965], No.576/66. Heading F1K The compression is automatically relieved at speeds below a predetermined speed by a centrifugally operated mechanism associated with an engine valve as shown, as the plunger 70 revolves with the cam-shaft 30, plunger end 82 will strike follower 40 and lift it a predetermined distance thereby lifting the exhaust valve off its seat for a portion of each compression stroke. As the rotational speed of the camshaft 30 increases above cranking speed flyweight 74 as it revolves with camshaft 30 overcomes the spring and pivots clockwise. This simultaneously rotates cam portion 102 and plunger 70 shifts radially of the cam-shaft 30 thereby retracting plunger end 82. The plunger is retracted by the valve spring which acts through the push rod 38 on the plunger. The mechanism may be arranged to operate on the intake valve rather than the exhaust valve. A modified plunger and modified flyweight are described. In some applications it may be preferred to provide a third valve the sole purpose of which is to relieve compression during starting.
GB57666A 1965-01-12 1966-01-06 Improvements in and relating to compression relief mechanisms Expired GB1132391A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US42491565A 1965-01-12 1965-01-12

Publications (1)

Publication Number Publication Date
GB1132391A true GB1132391A (en) 1968-10-30

Family

ID=23684416

Family Applications (1)

Application Number Title Priority Date Filing Date
GB57666A Expired GB1132391A (en) 1965-01-12 1966-01-06 Improvements in and relating to compression relief mechanisms

Country Status (4)

Country Link
BE (1) BE673717A (en)
DE (1) DE1526493A1 (en)
FR (1) FR1461817A (en)
GB (1) GB1132391A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0555805A1 (en) * 1992-02-10 1993-08-18 CAGIVA SERVICES S.p.A. Automatic compression release device for starting an internal combustion engine
WO1998030788A1 (en) * 1997-01-14 1998-07-16 Briggs & Stratton Corporation Compression release for multi-cylinder engines
CN113944851A (en) * 2021-10-18 2022-01-18 青岛久力材料科技有限公司 Balance expansion piece and balance equipment

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3003566A1 (en) * 1980-02-01 1981-08-06 Klöckner-Humboldt-Deutz AG, 5000 Köln BRAKE DEVICE FOR A VALVE CONTROLLED INTERNAL COMBUSTION ENGINE
US4610227A (en) * 1984-01-20 1986-09-09 Kubota Limited Automatic decompression system for starting engine
US4590905A (en) * 1984-05-04 1986-05-27 Honda Giken Kogyo Kabushiki Kaisha Process for decompression control in internal combustion engine and apparatus therefor
DE102016119105A1 (en) * 2016-10-07 2018-04-12 Uwe Eisenbeis Camshaft for internal combustion engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0555805A1 (en) * 1992-02-10 1993-08-18 CAGIVA SERVICES S.p.A. Automatic compression release device for starting an internal combustion engine
WO1998030788A1 (en) * 1997-01-14 1998-07-16 Briggs & Stratton Corporation Compression release for multi-cylinder engines
CN113944851A (en) * 2021-10-18 2022-01-18 青岛久力材料科技有限公司 Balance expansion piece and balance equipment
CN113944851B (en) * 2021-10-18 2023-01-24 青岛久力材料科技有限公司 Balance expansion piece and balance equipment

Also Published As

Publication number Publication date
BE673717A (en) 1966-06-14
DE1526493A1 (en) 1970-04-02
FR1461817A (en) 1966-12-09

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