WO2016052533A1 - Mécanisme de décompression pour moteur à combustion interne - Google Patents

Mécanisme de décompression pour moteur à combustion interne Download PDF

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Publication number
WO2016052533A1
WO2016052533A1 PCT/JP2015/077573 JP2015077573W WO2016052533A1 WO 2016052533 A1 WO2016052533 A1 WO 2016052533A1 JP 2015077573 W JP2015077573 W JP 2015077573W WO 2016052533 A1 WO2016052533 A1 WO 2016052533A1
Authority
WO
WIPO (PCT)
Prior art keywords
decompression
cam
rocker arm
camshaft
exhaust
Prior art date
Application number
PCT/JP2015/077573
Other languages
English (en)
Japanese (ja)
Inventor
秀智 若狭
Original Assignee
本田技研工業株式会社
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 本田技研工業株式会社 filed Critical 本田技研工業株式会社
Priority to JP2016552080A priority Critical patent/JP6219537B2/ja
Publication of WO2016052533A1 publication Critical patent/WO2016052533A1/fr

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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
    • 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
    • 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

Definitions

  • the decompression weight pivotally supported by the cam lobe of the camshaft is provided so as to be swingable along the side face of the cam lobe, and the connecting pin at the distal end of the decompression weight is provided on the side face of the cam lobe.
  • a decompression cam decompression member
  • the swing of the decompression weight causes the decompression cam to pivot, and the cam portion of the decompression cam is projected and retracted in the radial direction.
  • the swing range of the decompression member is restricted at the stop position where a part of the decompression weight part is in contact with the shaft part of the camshaft.
  • the intake rocker arm 43 is in contact with the upper end of the valve stem of the intake valve 25, which is biased upward by the valve spring 25 s, with the adjusting screw 43 t screwed to the tip of the valve side arm portion 43 v, and the cam side arm portion 43 c.
  • An intake side roller 43r is rotatably supported by a pair of roller bearing portions 43cc and 43cc branched at the front end via a support shaft 43ra, and the intake side roller 43r is supported by the cam periphery of the cam lobe 32 of the camshaft 31. Roll to contact the surface.
  • the base end portion 51a is pivotally supported by the support shaft 52 inside the base circle Bc on the side surface of the cam crest 32a of the cam lobe 32, so that the rigidity of the cam lobe shaft support portion can be easily secured. Since the decompression cam portion 51c formed at the distal end portion of the decompression weight portion 51w is located on the substantially opposite side with respect to the cam crest 32a of the cam lobe 32 and the shaft portion of the camshaft 31, the arcuate decompression weight portion 51w is formed on the camshaft 31.

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

L'invention concerne un mécanisme de décompression pour un moteur à combustion interne, dans lequel un bossage de came (32) est prévu sur un arbre à cames (31), et un élément de décompression (51) comportant une extrémité de celui-ci fixée pivotante par une broche (52) est prévu sur une surface latérale du bossage de came (32). Une surface de came de décompression (Sc) d'une partie came de décompression (51c) de l'élément de décompression (51), ladite partie came de décompression (51c) faisant saillie radialement vers l'extérieur, est positionnée par rapport au bossage de came (32) de telle sorte qu'un arc (Rs) qui est la trajectoire d'oscillation de l'élément de décompression (51) au niveau d'un point (P) sur la surface de came de décompression (Sc), ladite trajectoire d'oscillation comprenant, en son centre, la broche (52), est situé radialement vers l'intérieur par rapport à un arc (Rr) d'un cercle virtuel autour du centre de rotation (Cx) de l'arbre à cames (31) au niveau du point (P). La surface de came de décompression (Sc) qui fait saillie radialement vers l'extérieur est formée dans une forme plane dans laquelle une ligne normale (L) au niveau du point (P) sur la surface de came de décompression (Sc) passe à travers la partie centrale oscillante (52) ou une position décalée par rapport à la partie centrale oscillante (52) dans la direction de rotation de l'arbre à cames (31). En conséquence, une structure simple comprenant peu d'éléments peut être utilisée pour obtenir un mécanisme de décompression compact et bon marché, et une réduction de la taille d'un moteur à combustion interne peut être obtenue.
PCT/JP2015/077573 2014-09-30 2015-09-29 Mécanisme de décompression pour moteur à combustion interne WO2016052533A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2016552080A JP6219537B2 (ja) 2014-09-30 2015-09-29 内燃機関のデコンプ機構

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2014-199534 2014-09-30
JP2014199534 2014-09-30

Publications (1)

Publication Number Publication Date
WO2016052533A1 true WO2016052533A1 (fr) 2016-04-07

Family

ID=55630559

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP2015/077573 WO2016052533A1 (fr) 2014-09-30 2015-09-29 Mécanisme de décompression pour moteur à combustion interne

Country Status (2)

Country Link
JP (1) JP6219537B2 (fr)
WO (1) WO2016052533A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018025191A1 (fr) * 2016-08-03 2018-02-08 Tvs Motor Company Limited Système de recirculation des gaz d'échappement destiné à un moteur à combustion interne
CN110735684A (zh) * 2018-07-18 2020-01-31 本田技研工业株式会社 内燃机
US20200173415A1 (en) * 2018-11-30 2020-06-04 Kwang Yang Motor Co., Ltd. Depressurization device of internal combustion engine
CN112384683A (zh) * 2018-07-05 2021-02-19 本田技研工业株式会社 发动机的减压装置及发动机

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7292490B2 (ja) 2020-02-21 2023-06-16 三菱電機株式会社 空気調和機の室外機

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52149931U (fr) * 1976-05-10 1977-11-14
JP2002295217A (ja) * 2001-03-30 2002-10-09 Honda Motor Co Ltd ４ストロークサイクル内燃機関のデコンプ装置
JP2006152941A (ja) * 2004-11-30 2006-06-15 Fuji Heavy Ind Ltd エンジンの動弁装置
JP2014129794A (ja) * 2012-12-28 2014-07-10 Honda Motor Co Ltd 内燃機関のデコンプ装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4759534B2 (ja) * 2007-04-27 2011-08-31 本田技研工業株式会社 デコンプ装置を備える内燃機関および該内燃機関が搭載された自動二輪車

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52149931U (fr) * 1976-05-10 1977-11-14
JP2002295217A (ja) * 2001-03-30 2002-10-09 Honda Motor Co Ltd ４ストロークサイクル内燃機関のデコンプ装置
JP2006152941A (ja) * 2004-11-30 2006-06-15 Fuji Heavy Ind Ltd エンジンの動弁装置
JP2014129794A (ja) * 2012-12-28 2014-07-10 Honda Motor Co Ltd 内燃機関のデコンプ装置

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2018025191A1 (fr) * 2016-08-03 2018-02-08 Tvs Motor Company Limited Système de recirculation des gaz d'échappement destiné à un moteur à combustion interne
CN112384683A (zh) * 2018-07-05 2021-02-19 本田技研工业株式会社 发动机的减压装置及发动机
US11384725B2 (en) 2018-07-05 2022-07-12 Honda Motor Co., Ltd. Engine decompression device and engine
CN110735684A (zh) * 2018-07-18 2020-01-31 本田技研工业株式会社 内燃机
US20200173415A1 (en) * 2018-11-30 2020-06-04 Kwang Yang Motor Co., Ltd. Depressurization device of internal combustion engine

Also Published As

Publication number Publication date
JPWO2016052533A1 (ja) 2017-06-29
JP6219537B2 (ja) 2017-10-25

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