CONTINUOUSLY VARIABLE VALVE LIFT DEVICE

摘要

[Object] A technique related to a continuously variable valve lift device having a lift amount change mechanism with improved accuracy of changing a lift amount of an engine valve [Solving means] A continuously variable valve lift device includes a rocker arm which causes an engine valve to perform an opening/closing operation with a cam of a cam shaft, and an engine valve lift amount change mechanism. The lift amount change mechanism has a control shaft which has an eccentric circular disc cam, and a control arm which has a cam contact portion in contact with the first cam and a first arm, and which swings around the eccentric circular disc cam, second biasing means for biasing the cam contact portion against the first cam, and a second cam portion of a free-form surface shape in contact with the second arm and the rocker arm, and has a cam member which is supported so as to be capable of turning around the shaft main body, and a link arm whose both ends are supported so as to be capable of turning by the first arm and the second arm.