AR033078A1 - DEVICE FOR DECOMPRESSION OF AN INTERNAL COMBUSTION ENGINE OF 4 RACES PER CYCLE - Google Patents

DEVICE FOR DECOMPRESSION OF AN INTERNAL COMBUSTION ENGINE OF 4 RACES PER CYCLE

Info

Publication number
AR033078A1
AR033078A1 ARP020101166A ARP020101166A AR033078A1 AR 033078 A1 AR033078 A1 AR 033078A1 AR P020101166 A ARP020101166 A AR P020101166A AR P020101166 A ARP020101166 A AR P020101166A AR 033078 A1 AR033078 A1 AR 033078A1
Authority
AR
Argentina
Prior art keywords
cam
decompression
rocker arm
intake
valve
Prior art date
Application number
ARP020101166A
Other languages
Spanish (es)
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 AR033078A1 publication Critical patent/AR033078A1/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

En un motor de combustion interna de 4 carreras por ciclo que tiene una válvula de admision (13) y una válvula de descarga (14) abiertas y cerradas por una leva de admision (17) y una leva de escape (18) integradas en un árbol de levas (19), una leva de descompresion (35) se coloca sobre el árbol de levas (19) lindante con al menos una de la válvula de admision (17) y de la válvula de descarga (18) a través de un embrague de sentido unico (34) capaz de transmitir torsion solo cuando el árbol de levas (19) rota en reversa. Un rodillo de leva (32) que rueda en contacto con la leva de admision (17) o la leva de escape (18) se soporta en forma giratoria sobre un extremo de un balancín (26, 27) para abrir la válvula de admision (13) o la válvula de descarga (14). Una seccion de contacto de la leva de descompresion (33) del balancín (26,27) que toca la leva de descompresion (35) se forma sobre un extremo del balancín (26, 27) que soporta el rodillo de leva (32). La longitud axial del rodillo de leva (32) y el ancho del balancín (26,27) pueden reducirse, la fuerza para accionar un aparato de accionamiento de válvula puede reducirse y el dispositivo de descompresion puede miniaturizarse. Una pieza del dispositivo de detencion (41) penetra de modo que se desliza a través de un orificio pasante (40a) de una seccion de soporte de pieza del dispositivo de detencion (40) provista en una tapa de cilindro. Una saliente de enganche (39a) formada sobre una periferia de la leva de descompresion (35) retenida por la pieza del dispositivo de detencion (41).In a 4-stroke internal combustion engine per cycle that has an intake valve (13) and a discharge valve (14) open and closed by an intake cam (17) and an exhaust cam (18) integrated in a camshaft (19), a decompression cam (35) is placed on the camshaft (19) adjacent to at least one of the intake valve (17) and the discharge valve (18) through a One-way clutch (34) capable of transmitting torque only when the camshaft (19) rotates in reverse. A cam roller (32) that rolls in contact with the intake cam (17) or the exhaust cam (18) is rotatably supported on 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 on one end of the rocker arm (26, 27) that supports the cam roller (32). The axial length of the cam roller (32) and the width of the rocker arm (26,27) can be reduced, the force to operate a valve actuator can be reduced and the decompression device can be miniaturized. A part of the stop device (41) penetrates so that it slides through a through hole (40a) of a part support section of the stop device (40) provided in a cylinder cover. A coupling projection (39a) formed on a periphery of the decompression cam (35) retained by the part of the stopping device (41).

ARP020101166A 2001-03-30 2002-03-27 DEVICE FOR DECOMPRESSION OF AN INTERNAL COMBUSTION ENGINE OF 4 RACES PER CYCLE AR033078A1 (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
AR033078A1 true AR033078A1 (en) 2003-12-03

Family

ID=26612850

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP020101166A AR033078A1 (en) 2001-03-30 2002-03-27 DEVICE FOR DECOMPRESSION OF AN INTERNAL COMBUSTION ENGINE OF 4 RACES PER CYCLE

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
TR200202591T1 (en) 2003-12-22
WO2002081877A1 (en) 2002-10-17
MY141810A (en) 2010-06-30
BR0204748A (en) 2003-06-10
CN1267624C (en) 2006-08-02
BR0204748B1 (en) 2010-06-29
CN1460147A (en) 2003-12-03

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Legal Events

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