Variable valve mechanism for internal combustion engine

F - Mech Eng,Light,Heat,Weapons – 01 – L

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F01L 13/00 (2006.01)

Patent

CA 2518949

An oscillating cam is oscillated by a rotating cam provided on a camshaft rotated by a crankshaft of an internal combustion engine. The oscillating cam has a rotating-cam contact portion that is in contact with the rotating cam to transmit drive force from the rotating cam to the oscillating cam. The rotating-cam contact portion is made movable so as to provide a contact portion varying mechanism for varying a relative distance between the rotating cam and the axis of the oscillating cam. The relative distance is variable by varying the amount of lift of each valve.

Une came oscillante est mise en oscillation par une came rotative disposée sur un arbre à came mis en rotation par un vilebrequin d'un moteur à combustion interne. La came oscillante présente une partie de contact de came rotative laquelle est en contact avec la came rotative pour transmettre une force d'entraînement de la came rotative à la came oscillante. La partie de contact de came rotative est rendue mobile de manière à obtenir un mécanisme de variation de partie de contact destiné à faire varier une distance relative entre la came rotative et l'axe de la came oscillante. La distance relative est variable par variation de la quantité de levée de chaque soupape.

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