Cam follower arm for an internal combustion engine

Details Cam follower arm for an internal combustion engine Cam follower arm for an internal combustion engine

F - Mech Eng,Light,Heat,Weapons

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F01L 1/34 (2006.01) F01L 1/14 (2006.01) F01L 1/18 (2006.01) F01L 1/46 (2006.01) F02B 63/02 (2006.01)

Patent

CA 2492891

A valve train (460) in an internal combustion engine (100), and a method of adjusting the valve timing setting of a valve in such a valve train, are disclosed. The present invention relates to an engine that includes a crankcase (110) with a cylinder (160), a valve (250), a push rod (345), a rocker arm (355) supported by the crankcase and coupling the valve to the push rod, a cam (365) rotatably supported by the crankcase, and a cam follower arm (475) having first and second ends and, proximate the second end, having bottom (535) and top (545) surfaces. The cam follower arm is rotatably supported by the crankcase about a pivot point (515) proximate the first end. The bottom surface proximate the second end slidingly interfaces the cam, and the top surface proximate the second end interfaces the push rod.

Cette invention concerne un train de soupapes (460) de moteur thermique (100) et une technique de calage des soupapes dans ledit train. L'invention s'applique à un moteur avec bloc (110), cylindre (160), soupape (250), tige-poussoir (345), bras de culbuteur (355) maintenu par le bloc et reliant la soupape à la tige-poussoir, came (365) maintenue en rotation par le bloc, et bras de galet de came (475) avec première et seconde extrémités et, à proximité de la seconde extrémité, des surfaces inférieure (535) et supérieure (545). Le bras de galet de came est maintenu en rotation par le bloc sur un point de pivotement (515) à proximité de la première extrémité. La surface inférieure à proximité de la seconde extrémité forme l'interface avec la came, et la surface supérieure à proximité de la seconde extrémité l'interface avec la tige-poussoir.

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