Valve operating device for use in internal combustion engine

Details Valve operating device for use in internal combustion engine Valve operating device for use in internal combustion engine

F - Mech Eng,Light,Heat,Weapons

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F01L 1/34 (2006.01) F01L 1/08 (2006.01)

Patent

CA 1326183

ABSTRACT OF THE DISCLOSURE A valve operating device for operating an intake or exhaust valve in an internal combustion engine includes a cam having a cam profile including a valve lifting portion for apply- ing a force to open the engine valve and a base circle portion for allowing the valve to be closed, the cam profile having a valve opening point and a valve closing point between the valve lifting portion and the base circle portion, a cam follower slidably engaging the cam, and a hydraulic lash adjuster combined with the cam follower for eliminating any gap between the means and the engine valve. The base circle portion has a gradient cam surface or a combination of different gradient cam surfaces for cancelling out valve-lifting radial displacement of the base circle portion.

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