BR0204748A - 4 stroke cycle internal combustion engine decompression device - Google Patents
4 stroke cycle internal combustion engine decompression deviceInfo
- 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
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.
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)
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)
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 |
-
2002
- 2002-02-22 BR BRPI0204748-9A patent/BR0204748B1/en not_active IP Right Cessation
- 2002-02-22 TR TR2002/02591T patent/TR200202591T1/en unknown
- 2002-02-22 CN CNB028009673A patent/CN1267624C/en not_active Expired - Fee Related
- 2002-02-22 WO PCT/JP2002/001617 patent/WO2002081877A1/en active IP Right Grant
- 2002-03-27 AR ARP020101166A patent/AR033078A1/en active IP Right Grant
- 2002-03-28 MY MYPI20021133A patent/MY141810A/en unknown
Also Published As
Publication number | Publication date |
---|---|
WO2002081877A1 (en) | 2002-10-17 |
CN1267624C (en) | 2006-08-02 |
BR0204748B1 (en) | 2010-06-29 |
TR200202591T1 (en) | 2003-12-22 |
AR033078A1 (en) | 2003-12-03 |
MY141810A (en) | 2010-06-30 |
CN1460147A (en) | 2003-12-03 |
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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 |