EP2949889A3 - Engine and vehicle - Google Patents

Engine and vehicle Download PDF

Info

Publication number
EP2949889A3
EP2949889A3 EP15163610.7A EP15163610A EP2949889A3 EP 2949889 A3 EP2949889 A3 EP 2949889A3 EP 15163610 A EP15163610 A EP 15163610A EP 2949889 A3 EP2949889 A3 EP 2949889A3
Authority
EP
European Patent Office
Prior art keywords
cam shaft
center
rotation
assumed
seen
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
EP15163610.7A
Other languages
German (de)
French (fr)
Other versions
EP2949889B1 (en
EP2949889A2 (en
Inventor
Hideaki Hashimoto
Chihiro HARA
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.)
Yamaha Motor Co Ltd
Original Assignee
Yamaha 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
Application filed by Yamaha Motor Co Ltd filed Critical Yamaha Motor Co Ltd
Publication of EP2949889A2 publication Critical patent/EP2949889A2/en
Publication of EP2949889A3 publication Critical patent/EP2949889A3/en
Application granted granted Critical
Publication of EP2949889B1 publication Critical patent/EP2949889B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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

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)
  • Gears, Cams (AREA)

Abstract

A straight line that passes through the center of rotation of a cam shaft and the center of rotation of a weight is assumed to be a vertical axis as seen from the axial direction of the cam shaft. A straight line that is orthogonal to the vertical axis and that passes through the center of rotation of the cam shaft is assumed to be a horizontal axis. A direction from the center of rotation of the cam shaft toward the center of rotation of the weight among directions parallel to the vertical axis is assumed to be a first vertical direction. One direction among the directions parallel to the horizontal axis is assumed to be a first horizontal direction. The center of gravity of the weight is disposed in a first region as seen from the axial direction of the cam shaft. The first region is located in the first vertical direction from the horizontal axis and in the first horizontal direction from the vertical axis. The weight includes a first portion that is disposed in the first region as seen from the axial direction of the cam shaft. In a closed state, the first portion includes a first protruding portion that protrudes to the outside of an external peripheral surface of the bearing as seen from the axial direction of the cam shaft.
EP15163610.7A 2014-05-27 2015-04-15 Engine and vehicle Active EP2949889B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2014108987A JP2015224579A (en) 2014-05-27 2014-05-27 Engine and vehicle

Publications (3)

Publication Number Publication Date
EP2949889A2 EP2949889A2 (en) 2015-12-02
EP2949889A3 true EP2949889A3 (en) 2016-01-27
EP2949889B1 EP2949889B1 (en) 2017-03-15

Family

ID=52997236

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15163610.7A Active EP2949889B1 (en) 2014-05-27 2015-04-15 Engine and vehicle

Country Status (4)

Country Link
EP (1) EP2949889B1 (en)
JP (1) JP2015224579A (en)
CN (1) CN105134325B (en)
TW (1) TWI611094B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016119105A1 (en) * 2016-10-07 2018-04-12 Uwe Eisenbeis Camshaft for internal combustion engine
CN109026258A (en) * 2018-08-16 2018-12-18 广州大运机车有限公司 A kind of decompressor of engine
TWM580123U (en) * 2018-11-30 2019-07-01 光陽工業股份有限公司 Decompression device of internal combustion engine
JP6967029B2 (en) * 2019-03-27 2021-11-17 本田技研工業株式会社 Internal combustion engine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5823153A (en) * 1997-05-08 1998-10-20 Briggs & Stratton Corporation Compressing release with snap-in components
US20060048736A1 (en) * 2004-09-03 2006-03-09 Toshikazu Sugiura Engine decompression mechanism
US20060225686A1 (en) * 2005-04-07 2006-10-12 Asano Yuuichi Decompressor and vehicle
US20080302321A1 (en) * 2007-06-08 2008-12-11 Kazuhisa Takemoto Decompressor for internal combustion engine
US20120199087A1 (en) * 2011-02-08 2012-08-09 Honda Motor Co., Ltd. Rocker arm structure

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000227064A (en) * 1999-02-04 2000-08-15 Sanshin Ind Co Ltd Decompressor of outboard engine
AU2003200227B2 (en) * 2002-02-06 2008-09-25 Honda Giken Kogyo Kabushiki Kaisha Internal Combustion Engine Provided with Decompressing Means and Method of Adjusting Valve Lift for Decompression
US20040003791A1 (en) * 2002-07-08 2004-01-08 Giuseppe Ghelfi Compression release mechanism
JP4887200B2 (en) 2006-08-08 2012-02-29 本田技研工業株式会社 Engine with decompression device
JP4540655B2 (en) 2006-11-24 2010-09-08 本田技研工業株式会社 Internal combustion engine with decompression device
TW201109520A (en) * 2009-09-07 2011-03-16 Sanyang Industry Co Ltd Engine cylinder head with pressure relief device
TWI451031B (en) * 2010-05-12 2014-09-01 Sanyang Industry Co Ltd Engine decompression mechanism
TWM404273U (en) * 2010-10-19 2011-05-21 Sanyang Industry Co Ltd Engine of pressure relief device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5823153A (en) * 1997-05-08 1998-10-20 Briggs & Stratton Corporation Compressing release with snap-in components
US20060048736A1 (en) * 2004-09-03 2006-03-09 Toshikazu Sugiura Engine decompression mechanism
US20060225686A1 (en) * 2005-04-07 2006-10-12 Asano Yuuichi Decompressor and vehicle
US20080302321A1 (en) * 2007-06-08 2008-12-11 Kazuhisa Takemoto Decompressor for internal combustion engine
US20120199087A1 (en) * 2011-02-08 2012-08-09 Honda Motor Co., Ltd. Rocker arm structure

Also Published As

Publication number Publication date
CN105134325B (en) 2018-03-13
TW201604383A (en) 2016-02-01
EP2949889B1 (en) 2017-03-15
TWI611094B (en) 2018-01-11
CN105134325A (en) 2015-12-09
JP2015224579A (en) 2015-12-14
EP2949889A2 (en) 2015-12-02

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