Patent ID: 8899196
Filing Date: 2014-12-02
Classification: F01L

Abstract:
1. A variable valve lift apparatus, comprising: a camshaft; a cam portion including first cams having differing lift amounts formed at one side thereof and a first cam protrusion portion formed adjacent the first cams that is slidably disposed on the camshaft to rotate together with the camshaft; a first guide pin that protrudes on one side of an exterior circumference of the first cam protrusion portion; a first guide that is disposed to correspond with the first cam protrusion portion and in which a first guide groove is formed therein to move the first cam portion in one direction along the camshaft according to the rotation of the first guide pin; and a first operation portion that moves the first guide toward the first cam protrusion portion such that the first guide pin is inserted into the first guide groove of the first guide.