EP0031261A1 - Vorrichtung zur automatischen Steuerung des Schliessens eines Dekompressionsventiles einer Brennkraftmaschine - Google Patents

Vorrichtung zur automatischen Steuerung des Schliessens eines Dekompressionsventiles einer Brennkraftmaschine Download PDF

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Publication number
EP0031261A1
EP0031261A1 EP80401640A EP80401640A EP0031261A1 EP 0031261 A1 EP0031261 A1 EP 0031261A1 EP 80401640 A EP80401640 A EP 80401640A EP 80401640 A EP80401640 A EP 80401640A EP 0031261 A1 EP0031261 A1 EP 0031261A1
Authority
EP
European Patent Office
Prior art keywords
valve
closing
finger
spring
shaft
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
Application number
EP80401640A
Other languages
English (en)
French (fr)
Other versions
EP0031261B1 (de
Inventor
Marc Perrin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Peugeot Cycles SA
Original Assignee
Peugeot Cycles SA
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 Peugeot Cycles SA filed Critical Peugeot Cycles SA
Priority to AT80401640T priority Critical patent/ATE5345T1/de
Publication of EP0031261A1 publication Critical patent/EP0031261A1/de
Application granted granted Critical
Publication of EP0031261B1 publication Critical patent/EP0031261B1/de
Expired legal-status Critical Current

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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
    • 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 object of the present invention is to remedy this by providing an automatic control which ensures the closing of the pressure relief valve with precision, after a determined number of engine rotation turns.
  • the subject of this invention is in fact an automatic device for controlling the closing of the decompression valve, comprising an articulated finger which rocks laterally under the opposite actions of a decompression command and of a valve return spring in position. closing, and which thus successively cooperates with a helical groove formed in the end a shaft integral in rotation with the motor, to prevent the action of the closing spring, then covers the end of this shaft, which releases the spring and triggers the closing of the valve.
  • the finger In the rest position, that is to say when the decompression control is not requested, the finger covers the end of the shaft and is therefore free to tilt.
  • the decompression command acts, it causes the finger to tilt and bring it into contact with the helical groove. It is only when it has traversed the whole of this groove and has reached the end of the shaft that it can tilt again in the opposite direction and return to its rest position, which causes the abrupt closure of the valve.
  • control device of the pressure relief valve of an operating engine sion mounted on a moped, or the like comprises a lever 1 which controls a cable 2 and is articulated on the handlebar 4 of the vehicle, near a control handle 5.
  • the valve, or more precisely the spring which returns it to the closed position is connected to a control cable 6.
  • the cylinder head 8 of the engine is pierced with a bore 10 which communicates on the one hand with the combustion chamber 12 and, on the other hand, with a duct 14 for venting.
  • the communication between the bore 10 and the combustion chamber 12 is controlled by a valve 16 secured to a rod 18, which slides in a guide 20 secured to the cylinder head 8.
  • a hairpin spring 22 is mounted between the guide 20 and a lever 24 which is fixed, on the one hand to the end of the rod 18, and on the other hand to the end of the cable 6. As shown in FIG. 1, the spring 22 thus constantly recalls the valve 16 in its closed position.
  • the two control cables 2 and 6 are fixed at the two ends 25 and 27 respectively, of a plate 26 capable of tilting parallel to itself around an axis 28 placed at equal distance from the two points 25 and 27.
  • the plate 26 On one of its faces, the plate 26 carries a yoke 30 crossed by an axis 31, around which a finger 32 is articulated (fig. 2).
  • a spring 34 bears, on the one hand on the plate 26 and, on the other hand, on the finger 32 and tends to separate these two members from one another.
  • this shaft 35 is constituted by an extension of the crankshaft 36 of the engine.
  • This tree 35 is carried by a fixed bearing 38 and comprises, between this bearing 38 and its end, a helical groove 40 which can for example constitute a screw thread.
  • the motor automatically performed a determined number of revolutions before the valve 16 closed.
  • An appropriate choice of the number of turns the groove 40 allows the engine to perform, before closing the valve 16, a sufficient number of revolutions for its launch, so that it can then easily start.
  • the clevis 30 for supporting the finger 32 is situated at an intermediate point between the axis 28 of the plate 26 and the point 25 for fixing the cable 2.
  • the tip 33 of finger 32 comes into contact with groove 40 at a point which is also on the same side as point 25 with respect to the plane passing through pivot axis 28 and through axis of shaft 35. All tilting of the plate 26 in the direction of the cable 6 is thus completely prohibited as long as the engine has not performed the desired number of revolutions.
  • the pilot is absolutely sure that the decompression valve will be closed exactly when necessary and he has no particular maneuver to perform, the only command of the lever 1 automatically and successively causing the opening and closing of this valve.
  • control device thus produced is extremely simple while being perfectly safe, which makes it particularly suitable for mopeds or other two-wheeled vehicles.

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)
EP80401640A 1979-12-14 1980-11-17 Vorrichtung zur automatischen Steuerung des Schliessens eines Dekompressionsventiles einer Brennkraftmaschine Expired EP0031261B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT80401640T ATE5345T1 (de) 1979-12-14 1980-11-17 Vorrichtung zur automatischen steuerung des schliessens eines dekompressionsventiles einer brennkraftmaschine.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7930752 1979-12-14
FR7930752A FR2471475A1 (fr) 1979-12-14 1979-12-14 Dispositif de commande automatique de la fermeture de la soupape de decompression d'un moteur a explosion

Publications (2)

Publication Number Publication Date
EP0031261A1 true EP0031261A1 (de) 1981-07-01
EP0031261B1 EP0031261B1 (de) 1983-11-16

Family

ID=9232806

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80401640A Expired EP0031261B1 (de) 1979-12-14 1980-11-17 Vorrichtung zur automatischen Steuerung des Schliessens eines Dekompressionsventiles einer Brennkraftmaschine

Country Status (7)

Country Link
US (1) US4369741A (de)
EP (1) EP0031261B1 (de)
JP (1) JPS5698537A (de)
AT (1) ATE5345T1 (de)
DE (1) DE3065635D1 (de)
ES (1) ES255329Y (de)
FR (1) FR2471475A1 (de)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE455008B (sv) * 1983-05-16 1988-06-13 Yanmar Diesel Engine Co For styrning av brenslemengden avsedd anordning pa dieselmotor med vertikal vevaxel
JPS6014252U (ja) * 1983-07-08 1985-01-30 本田技研工業株式会社 内燃機関のデコンプ装置
US6000370A (en) * 1997-11-20 1999-12-14 Ryobi North America, Inc. Compression release mechanism for an internal combustion engine
US6415747B1 (en) * 1998-06-19 2002-07-09 Yamaha Hatsudoki Kabushiki Kaisha Two stroke, multiple cylinder engine for small vehicle
US6547021B1 (en) * 2000-11-22 2003-04-15 Yamaha Hatsudoki Kabushiki Kaisha Decompression arrangement for land vehicle
JP2002303110A (ja) 2001-04-05 2002-10-18 Yamaha Motor Co Ltd エンジンのデコンプ装置
CN103362590B (zh) * 2013-05-08 2015-05-13 浙江日晟农林科技有限公司 发动机启动减压机构

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2016846A (en) * 1931-03-30 1935-10-08 Eclipse Aviat Corp Internal combustion engine
FR865039A (fr) * 1939-04-27 1941-05-12 Suisse Construction Locomotive Dispositif décompresseur pour moteurs à combustion interne
FR1187191A (fr) * 1957-11-15 1959-09-08 Peugeot Cycles Moteur à explosion à décompresseur de démarrage
DE1069932B (de) * 1959-11-26 Motoren-Werke Mannheim A.G. vorm. Benz Abt. Stat. Motorenbau, Mannheim Dekompressionsvon'ichtung
FR2364329A1 (fr) * 1976-09-14 1978-04-07 Honda Motor Co Ltd Dispositif a decompression pour moteurs de cyclomoteurs

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1749152A (en) * 1921-03-25 1930-03-04 Muller Friedrich Starting mechanism for internal-combustion engines
GB347553A (en) * 1929-11-07 1931-04-30 Hannoversche Maschb Ag Improvements in or relating to starting devices for internal combustion engines
US2947300A (en) * 1957-05-31 1960-08-02 Outboard Marine Corp Starter-controlled engine compression relief
JPS5443213Y2 (de) * 1976-12-13 1979-12-14

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1069932B (de) * 1959-11-26 Motoren-Werke Mannheim A.G. vorm. Benz Abt. Stat. Motorenbau, Mannheim Dekompressionsvon'ichtung
US2016846A (en) * 1931-03-30 1935-10-08 Eclipse Aviat Corp Internal combustion engine
FR865039A (fr) * 1939-04-27 1941-05-12 Suisse Construction Locomotive Dispositif décompresseur pour moteurs à combustion interne
FR1187191A (fr) * 1957-11-15 1959-09-08 Peugeot Cycles Moteur à explosion à décompresseur de démarrage
FR2364329A1 (fr) * 1976-09-14 1978-04-07 Honda Motor Co Ltd Dispositif a decompression pour moteurs de cyclomoteurs

Also Published As

Publication number Publication date
ES255329Y (es) 1982-03-01
JPS5698537A (en) 1981-08-08
US4369741A (en) 1983-01-25
FR2471475B1 (de) 1983-02-25
ATE5345T1 (de) 1983-12-15
ES255329U (es) 1981-09-16
DE3065635D1 (en) 1983-12-22
FR2471475A1 (fr) 1981-06-19
EP0031261B1 (de) 1983-11-16

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