MY141810A - Decompression device of 4 stroke cycle internal combustion engine - Google Patents

Decompression device of 4 stroke cycle internal combustion engine

Info

Publication number
MY141810A
MY141810A MYPI20021133A MYPI20021133A MY141810A MY 141810 A MY141810 A MY 141810A MY PI20021133 A MYPI20021133 A MY PI20021133A MY PI20021133 A MYPI20021133 A MY PI20021133A MY 141810 A MY141810 A MY 141810A
Authority
MY
Malaysia
Prior art keywords
cam
exhaust
decompression
valve
intake
Prior art date
Application number
MYPI20021133A
Inventor
Toshiharu Akutsu
Yoshinobu Sawamura
Yuichi Wasada
Hideo Kobayashi
Bunichiro Sakamoto
Original Assignee
Honda Motor Co 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
Priority claimed from JP2001101426A external-priority patent/JP4023585B2/en
Priority claimed from JP2001101427A external-priority patent/JP3963658B2/en
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Publication of MY141810A publication Critical patent/MY141810A/en

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
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • 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
    • F01L1/047—Camshafts
    • 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
    • F01L1/047—Camshafts
    • F01L1/053—Camshafts overhead type
    • 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
    • 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
    • F01L2305/00—Valve arrangements comprising rollers
    • F01L2305/02—Mounting of rollers

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

IN A 4 STROKE CYCLE INTERNAL COMBUSTION ENGINE HAVING AN INTAKE VALVE (13) AND AN EXHAUST. VALVE (14) OPENED AND CLOSED BY AN INTAKE CAM (17) AND AN EXHAUST CAM (18) MADE INTEGRAL WITH A CAMSHAFT (19)/ A DECOMPRESSION CAM (35) IS FITTED ON THE CAMSHAFT (19) NEIGHBORING AT LEAST ONE OF THE INTAKE CAM (17) AND THE EXHAUST CAM (18) THROUGH A ONE-WAY CLUTCH (34) CAPABLE OF TRANSMITTING TORQUE ONLY WHEN THE CAMSHAFT (19) ROTATES IN REVERSE. A CAM ROLLER (32) ROLLING IN CONTACT WITH THE INTAKE CAM (17) OR THE EXHAUST CAM (18) IS PIVOTALLY SUPPORTED ON AN END OF A ROCKER ARM (26/ 27) FOR OPENING THE INTAKE VALVE (13) OR THE EXHAUST VALVE (14), A DECOMPRESSION CAM CONTACT SECTION (33) OF THE ROCKER ARM (26/ 27) TOUCHING THE DECOMPRESSION CAM (35) IS FORMED ON AN END OF THE ROCKER ARM (26/ 27) SUPPORTING THE CAM ROLLER (32). AXIAL LENGTH OF THE CAM ROLLER (32) AND WIDTH OF THE ROCKER ARM (26/ 27) CAN BE MADE SMALL, POWER FOR DRIVING A VALVE MOVING APPARATUS CAN BE REDUCED AND THE DECOMPRESSION DEVICE CAN BE MINIATURIZED. A STOPPER PIECE (41) PENETRATES SO AS TO SLIDE A THROUGH HOLE (40A) OF A STOPPER PIECE SUPPORT SECTION (40) PROVIDED IN A CYLINDER HEAD. AN ENGAGING PROJECTION (39A) FORMED ON A PERIPHERY OF THE DECOMPRESSION CAM (35) IS RETAINED BY THE STOPPER PIECE (41).
MYPI20021133A 2001-03-30 2002-03-28 Decompression device of 4 stroke cycle internal combustion engine MY141810A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2001101426A JP4023585B2 (en) 2001-03-30 2001-03-30 Decompression device for 4-stroke cycle internal combustion engine
JP2001101427A JP3963658B2 (en) 2001-03-30 2001-03-30 Decompression device for 4-stroke cycle internal combustion engine

Publications (1)

Publication Number Publication Date
MY141810A true MY141810A (en) 2010-06-30

Family

ID=26612850

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI20021133A MY141810A (en) 2001-03-30 2002-03-28 Decompression device of 4 stroke cycle internal combustion engine

Country Status (6)

Country Link
CN (1) CN1267624C (en)
AR (1) AR033078A1 (en)
BR (1) BR0204748B1 (en)
MY (1) MY141810A (en)
TR (1) TR200202591T1 (en)
WO (1) WO2002081877A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2890350Y (en) * 2006-02-22 2007-04-18 广州市番禺华南摩托企业集团有限公司 Starting pressure-release and reversal pressure-release device
CN101131111B (en) * 2007-09-21 2010-06-02 隆鑫工业有限公司 Pressure reducing device of water-cooled engine
JP4777955B2 (en) * 2007-10-03 2011-09-21 本田技研工業株式会社 Engine decompression device
CN102606254B (en) * 2012-04-05 2014-07-30 重庆路沃发动机有限公司 Decompressor for engine
CN103912329B (en) * 2013-01-05 2017-10-10 光阳工业股份有限公司 Internal combustion engine convenient for replacing rocker shaft
CN105673215B (en) * 2016-03-02 2018-04-06 重庆亘富软件开发有限公司 The closing method of decompression is reverse-located for engine
CN110500157B (en) * 2019-09-12 2024-10-11 江门市大长江集团有限公司 Limiting structure and engine cylinder head pressure reducing device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60201069A (en) * 1984-03-26 1985-10-11 Honda Motor Co Ltd Decompression device for internal-combustion engine
JPH0670366B2 (en) * 1986-12-25 1994-09-07 本田技研工業株式会社 Engine auto decompression device
JP4145447B2 (en) * 1999-11-18 2008-09-03 本田技研工業株式会社 4-cycle engine decompression system

Also Published As

Publication number Publication date
BR0204748A (en) 2003-06-10
TR200202591T1 (en) 2003-12-22
WO2002081877A1 (en) 2002-10-17
CN1460147A (en) 2003-12-03
CN1267624C (en) 2006-08-02
AR033078A1 (en) 2003-12-03
BR0204748B1 (en) 2010-06-29

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