ENGINE VALVE DRIVER

摘要

An engine valve driver adapted to openingly and closingly drive a valve that opens and closes the valve opening in a combustion chamber by rocking a rocker arm (11) rockably supported by a rocker shaft (14), comprising a rocking member (9) driven for rocking by a rockably disposed drive means, an intermediate rocker member (10) disposed between a rocking cam surface (9b) formed on the rocking member (9) and a rocker pressing surface (11b) formed on the rocker arm (11) and adapted to transmit the motion of the rocking cam surface (9b) to the rocker pressing surface (11b), and an intermediate rocker moving mechanism for moving a point of contact between the rocking cam surface (9b) of the intermediate rocker member (10) and the rocker pressing surface (11b) by turning the rocker shaft (14), thereby making it possible to continuously adjust the valve opening period and the amount of lift.