BR0204748A - 4 stroke cycle internal combustion engine decompression device - Google Patents

4 stroke cycle internal combustion engine decompression device

Info

Publication number
BR0204748A
BR0204748A BR0204748-9A BR0204748A BR0204748A BR 0204748 A BR0204748 A BR 0204748A BR 0204748 A BR0204748 A BR 0204748A BR 0204748 A BR0204748 A BR 0204748A
Authority
BR
Brazil
Prior art keywords
cam
discharge
rocker arm
decompression
combustion engine
Prior art date
Application number
BR0204748-9A
Other languages
Portuguese (pt)
Other versions
BR0204748B1 (en
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 BR0204748A publication Critical patent/BR0204748A/en
Publication of BR0204748B1 publication Critical patent/BR0204748B1/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

"DISPOSITIVO DE DESCOMPRESSãO DE MOTOR DE COMBUSTãO INTERNA DE CICLO A 4 TEMPOS". Em um motor de combustão interna de ciclo a 4 tempos que tem uma válvula de admissão 13 e uma válvula de descarga 14 abertas e fechadas por um came de admissão 17 e um came de descarga 18 feitos integrais com um eixo de came 19, um came de descompressão 35 é adaptado no eixo de came 19 vizinho pelo menos a um do came de admissão 17 e came de descarga 18 através de uma embreagem corrediça 34 capaz de transmitir torque apenas quando o eixo de came 19 gira em marcha-à-ré. Um rolete de came 32 que rola em contato com o came de admissão 17 ou came de descarga 18 é sustentado de forma pivotal em uma extremidade de um braço de balancim 26, 27 para abrir a válvula de admissão 13 ou a válvula de descarga 14. Uma seção de contato do came de descompressão, 33, do braço de balancim 26, 27 tocando o came de descompressão 35 é formada em uma extremidade do braço de balancim 26, 27 que sustenta o rolete de came 32. O comprimento axial do rolete de came 32 e largura do braço de balancim 26, 27 podem ser feitos pequenos, a potência para acionar um aparelho de deslocamento de válvula pode ser reduzida e o dispositivo de descompressão pode ser miniaturizado. Uma peça de bujão 41 penetra de modo a deslizar em um furo direto 40a de uma seção de suporte de peça do bujão, 40, fornecida em uma cabeça de cilindro. Uma projeção de engate 39a formada em uma periferia do came de descompressão 35, é retida pela peça de bujão 41."4-CYCLE INTERNAL COMBUSTION ENGINE DECOMPRESSION DEVICE". In a 4 stroke cycle internal combustion engine having an intake valve 13 and a discharge valve 14 opened and closed by an intake cam 17 and a discharge cam 18 made integral with a cam shaft 19, a cam The camshaft 35 is adapted to at least one neighboring cam shaft 19 from the inlet cam 17 and discharge cam 18 via a sliding clutch 34 capable of transmitting torque only when the cam shaft 19 is reversed. A cam roller 32 which rolls in contact with the intake cam 17 or discharge cam 18 is pivotally supported at one end of a rocker arm 26, 27 to open the intake valve 13 or the discharge valve 14. A contact section of the decompression cam 33 of the rocker arm 26, 27 touching the decompression cam 35 is formed at one end of the rocker arm 26, 27 which holds the cam roller 32. The axial length of the cam roller cam 32 and rocker arm width 26, 27 may be made small, the power to drive a valve displacement apparatus may be reduced and the decompression device may be miniaturized. A plug part 41 slips into a straight bore 40a of a plug part support section 40 provided in a cylinder head. A snap projection 39a formed on a periphery of the decompression cam 35 is retained by the plug part 41.

BRPI0204748-9A 2001-03-30 2002-02-22 4 stroke cycle internal combustion engine decompression device. BR0204748B1 (en)

Applications Claiming Priority (3)

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
PCT/JP2002/001617 WO2002081877A1 (en) 2001-03-30 2002-02-22 Decompressor for 4-stroke cycle internal combustion engine

Publications (2)

Publication Number Publication Date
BR0204748A true BR0204748A (en) 2003-06-10
BR0204748B1 BR0204748B1 (en) 2010-06-29

Family

ID=26612850

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0204748-9A BR0204748B1 (en) 2001-03-30 2002-02-22 4 stroke cycle internal combustion engine decompression device.

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 It is easy to substitute the internal combustion engine of rocker arm 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
CN110500157A (en) * 2019-09-12 2019-11-26 江门市大长江集团有限公司 Position limiting structure and engine cylinder head decompressor

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
AR033078A1 (en) 2003-12-03
BR0204748B1 (en) 2010-06-29
MY141810A (en) 2010-06-30
CN1267624C (en) 2006-08-02
CN1460147A (en) 2003-12-03
WO2002081877A1 (en) 2002-10-17
TR200202591T1 (en) 2003-12-22

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Legal Events

Date Code Title Description
B09A Decision: intention to grant
B16A Patent or certificate of addition of invention granted

Free format text: PRAZO DE VALIDADE: 20 (VINTE) ANOS CONTADOS A PARTIR DE 22/02/2002, OBSERVADAS AS CONDICOES LEGAIS.

B21F Lapse acc. art. 78, item iv - on non-payment of the annual fees in time

Free format text: REFERENTE A 18A ANUIDADE.

B24J Lapse because of non-payment of annual fees (definitively: art 78 iv lpi, resolution 113/2013 art. 12)

Free format text: REFERENTE AO DESPACHO 21.6 PUBLICADO NA RPI 2554 DE 2019-12-17