Hydraulic control, for automotive tappets, has internal spring-operated valves used to maintain static clamp action when motor is not in operation

摘要

An automotive internal combustion engine has valves with hydraulically-controlled tappets. The hydraulic tappets are held in position by two opposing clamp faces. The hydraulic control has a series of internal spring-operated valves which maintain the static clamp action when the motor is not in operation.