Tappet structure of engine intake and exhaust valve with propeller-type oil groove formed on the contact surface of cam

摘要

The present invention relates to a tappet structure of an engine intake and exhaust valve in which a propeller-type oil groove is formed on a contact surface of a cam. In particular, in an intake and exhaust valve of an engine, And a plurality of propeller-type oil grooves are formed to the outer surface with respect to the oil receiving grooves to convert the rotational action of the cam into a reciprocating motion to open and close the oil groove of the tappet The friction generated between the contact surface of the tappet and the contact surface of the cam is reduced and the tappet's rotational property is added to the propeller oil groove to prevent the wear of the tappet while increasing the engine output, And the noise generated by the perturbation action of the engine is reduced. The present invention relates to a camshaft.