Four-cycle engine

F - Mech Eng,Light,Heat,Weapons – 02 – B

Patent

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Details

F02B 75/02 (2006.01) F01L 1/02 (2006.01) F02B 75/16 (2006.01)

Patent

CA 2135540

Teeth on an outer circumferential surface of a drive gear rotatable with the crankshaft of a four-cycle engine engage teeth on an inner circumferential surface of a cam gear. The cam gear has twice as many teeth as the drive gear. Cams, formed on an outer surface of the cam gear, are connected with valve actuating mechanisms to open and close exhaust and intake valves of the engine. The cam and drive gears may also function together as an oil pump.

Dents disposées sur la surface périphérique d'un pignon d'entraînement actionné par le vilebrequin d'un moteur à quatre temps. Ces dents s'imbriquent dans la surface périphérique interne d'un pignon-came comportant deux fois plus de dents que le pignon d'entraînement. Les cames, formées sur la surface extérieure du pignon-came, sont reliées à des mécanismes de manoeuvre à soupape permettant d'ouvrir et de fermer les soupapes d'échappement et d'admission du moteur. La came et les pignons d'entraînement peuvent également fonctionner ensemble pour entraîner une pompe à huile.

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