Tappet structure of engine intake and exhaust valve with 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 an oil groove is formed on a contact surface of a cam. In particular, in an intake and exhaust valve of an engine, And the oil is supplied to the oil circulation groove of the tappet when the intake and exhaust valve is opened and closed by switching the rotating action of the cam to the reciprocating motion so as to reduce the friction generated between the contact surface of the tappet and the contact surface of the cam, And the noise caused by the perturbation action of the cam and the tappet is reduced. The present invention also relates to a camshaft of an engine having an oil groove on a tappet contact surface.