Valve driving device for an engine, an engine equipped therewith and camshaft therefor

摘要

The device has a tappet assembly (3) with low-speed and high-speed side tappets to slide in a tappet guide hole for driving a valve (5). A depression (21) is dejected from a base circle to roughly the same profile as a shaft section of a camshaft. The cam portion over a preset angle range where a cam nose section is not formed in centrally located cam is smaller than base circles of outside located side cams. An independent claim is also included for an engine equipped with the valve driving device.