FR2592429A1 - Dispositif de decompression automatique pour moteur a quatre temps - Google Patents
Dispositif de decompression automatique pour moteur a quatre tempsInfo
- Publication number
- FR2592429A1 FR2592429A1 FR8519305A FR8519305A FR2592429A1 FR 2592429 A1 FR2592429 A1 FR 2592429A1 FR 8519305 A FR8519305 A FR 8519305A FR 8519305 A FR8519305 A FR 8519305A FR 2592429 A1 FR2592429 A1 FR 2592429A1
- Authority
- FR
- France
- Prior art keywords
- movable member
- stroke engine
- decompression device
- pusher
- automatic decompression
- 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
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
- F01L13/085—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 the valve-gear having an auxiliary cam protruding from the main cam profile
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
L'invention concerne un dispositif de décompression automatique servant à réduire au lancement la pression des gaz dans la chambre de combustion d'un moteur à quatre temps. Un organe mobile 20 monté sur le côté d'un engrenage 6 intégré à l'arbre à cames peut glisser, en étant guidé par deux fentes 21, 22 ménagées dans l'organe mobile 20 et deux tétons 23, 24 implantés dans l'engrenage 6 ; un bras 25 fait saillie de l'organe mobile 20 jusque dans une position permettant de pousser vers le haut un poussoir 3 assurant l'actionnement de la soupape de décompression 5 ; en marche normale du moteur, la force centrifuge agissant sur l'organe mobile 20 le fait coulisser le long des fentes de guidage 21, 22, en amenant le bras 25 de soulèvement du poussoir 3 en coïncidence avec le cercle de base de la came ou à l'intérieur de celui-ci. (CF DESSIN DANS BOPI)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US06/811,785 US4651687A (en) | 1985-12-20 | 1985-12-20 | Automatic compression releasing device for four-cycle engine |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2592429A1 true FR2592429A1 (fr) | 1987-07-03 |
FR2592429B1 FR2592429B1 (fr) | 1989-11-24 |
Family
ID=25207571
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR8519305A Expired FR2592429B1 (fr) | 1985-12-20 | 1985-12-27 | Dispositif de decompression automatique pour moteur a quatre temps |
Country Status (3)
Country | Link |
---|---|
US (1) | US4651687A (fr) |
DE (1) | DE3545566C1 (fr) |
FR (1) | FR2592429B1 (fr) |
Families Citing this family (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62261610A (ja) * | 1986-05-09 | 1987-11-13 | Honda Motor Co Ltd | エンジンのオ−トデコンプ装置 |
US4898133A (en) * | 1988-12-07 | 1990-02-06 | Kohler Co. | Automatic compression release apparatus for an internal combustion engine |
US4892068A (en) * | 1989-06-09 | 1990-01-09 | Kohler Co. | Geared automatic compression release for an internal combustion engine |
US5184586A (en) * | 1992-02-10 | 1993-02-09 | Tecumseh Products Company | Mechanical compression release for an internal combustion engine |
US5197422A (en) * | 1992-03-19 | 1993-03-30 | Briggs & Stratton Corporation | Compression release mechanism and method for assembling same |
DE4221394C2 (de) * | 1992-06-30 | 2002-07-18 | Farymann Diesel | Dekompressionsvorrichtung für Brennkraftmaschinen |
US5402759A (en) * | 1994-07-08 | 1995-04-04 | Outboard Marine Corporation | Cylinder decompression arrangement in cam shaft |
US5647318A (en) * | 1994-07-29 | 1997-07-15 | Caterpillar Inc. | Engine compression braking apparatus and method |
US5540201A (en) * | 1994-07-29 | 1996-07-30 | Caterpillar Inc. | Engine compression braking apparatus and method |
US5526784A (en) * | 1994-08-04 | 1996-06-18 | Caterpillar Inc. | Simultaneous exhaust valve opening braking system |
US5823153A (en) * | 1997-05-08 | 1998-10-20 | Briggs & Stratton Corporation | Compressing release with snap-in components |
US5957101A (en) * | 1997-07-09 | 1999-09-28 | Kohler Co. | Automatic compression release mechanism for an internal combustion engine |
US5957097A (en) * | 1997-08-13 | 1999-09-28 | Harley-Davidson Motor Company | Internal combustion engine with automatic compression release |
US6401678B1 (en) | 2000-02-08 | 2002-06-11 | Mtd Southwest | Small four-cycle engine having compression relief to facilitate cranking |
DE10047255C2 (de) | 2000-09-23 | 2003-03-06 | Porsche Ag | Automatische Dekompressionsvorrichtung für ventilgesteuerte Brennkraftmaschinen |
US6786185B2 (en) * | 2002-03-14 | 2004-09-07 | Delphi Technologies, Inc. | Variable valve actuation mechanism having partial wrap bearings for output cams and frames |
US6978751B2 (en) | 2002-07-18 | 2005-12-27 | Kohler Co. | Cam follower arm for an internal combustion engine |
US6672269B1 (en) | 2002-07-18 | 2004-01-06 | Kohler Co. | Automatic compression release mechanism |
US7328678B2 (en) * | 2005-06-07 | 2008-02-12 | Tecumseh Power Company | Mechanical compression and vacuum release mechanism |
US7174871B2 (en) * | 2005-06-07 | 2007-02-13 | Tecumseh Products Company | Mechanical compression and vacuum release mechanism |
CN108087052B (zh) * | 2017-12-13 | 2019-11-22 | 大连理工大学 | 一种液压多模式可变气门驱动*** |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3362390A (en) * | 1966-02-09 | 1968-01-09 | Wisconsin Motor Corp | Automatic compression release |
US3381676A (en) * | 1967-04-12 | 1968-05-07 | Tecumseh Products Co | Compression relief mechanism |
FR2558527A1 (fr) * | 1984-01-20 | 1985-07-26 | Kubota Ltd | Systeme de decompression automatique pour le demarrage d'un moteur |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3897768A (en) * | 1973-11-19 | 1975-08-05 | Tecumseh Products Co | Compression relief mechanism |
JPS5620486A (en) * | 1979-07-27 | 1981-02-26 | Matsushita Electric Works Ltd | Rotary electric razor |
-
1985
- 1985-12-20 US US06/811,785 patent/US4651687A/en not_active Expired - Lifetime
- 1985-12-21 DE DE3545566A patent/DE3545566C1/de not_active Expired
- 1985-12-27 FR FR8519305A patent/FR2592429B1/fr not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3362390A (en) * | 1966-02-09 | 1968-01-09 | Wisconsin Motor Corp | Automatic compression release |
US3381676A (en) * | 1967-04-12 | 1968-05-07 | Tecumseh Products Co | Compression relief mechanism |
FR2558527A1 (fr) * | 1984-01-20 | 1985-07-26 | Kubota Ltd | Systeme de decompression automatique pour le demarrage d'un moteur |
Also Published As
Publication number | Publication date |
---|---|
DE3545566C1 (de) | 1987-09-03 |
FR2592429B1 (fr) | 1989-11-24 |
US4651687A (en) | 1987-03-24 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |