CONTINUOUS VARIABLE VALVE LIFT APPARATUS

摘要

A continuous variable valve lift apparatus is provided to improve fuel efficiency in a low valve lift by reducing friction loss through excluding a return spring. A continuous variable valve lift apparatus comprises: a cam-shaft(100); an input cam(200) installed at the cam-shaft; a variable lever(300) being rotatably connected to the cam-shaft to change the angle and including a first arm with a first connection shaft(330); a first link(400) corresponding to the rotation of the input cam and rotating around the first connection shaft; an output cam(600) rotating around the cam-shaft; a valve opening and closing part(700) which are opened and closed by the output cam; a connection part(500) delivering the rotation of the first link to the output cam; and an auxiliary cam(250) restoring the first link after the first cam rotates the output cam.