Valve operating mechanism for internal combustion engine

Details Valve operating mechanism for internal combustion engine Valve operating mechanism for internal combustion engine

F - Mech Eng,Light,Heat,Weapons

01

L

123/183

F01L 1/26 (2006.01)

Patent

CA 1289828

ABSTRACT OF THE DISCLOSURE A valve operating mechanism for operating a single valve of a particular cylinder of an internal combustion engine includes a camshaft rotatable in synchronism with rotation of the internal combustion engine and having at least one cam, and a plurality of cam followers, one of which slidably engages the cam for selectively operating the valves according to a cam profile of the cam. The cam followers are selectively inter- connected and disconnected to operate the valve differently in different speed ranges of the internal combustion engine. In different embodiments, the camshaft has an annular raised por- tion and low- and high-speed cams, or low-, medium-, and high- speed cams, or an annular raised portion and a cam, and the cam followers are held in sliding contact with these raised portion and cams. The valve is selectively kept inoperative by the raised portion and operated in low- and high-speed ranges by the low- and high-speed cams, or selectively operated in low-, medium-, and high-speed ranges by the low-, medium-, and high-speed cams, or selectively kept inoperative by the raised portion and operated in a high-speed range by the cam.

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