Patent ID: 7104231
Filing Date: 2006-09-12
Classification: F01L

Abstract:
1. A valve train of an internal combustion engine provided in the internal combustion engine including a cylinder having a cylinder axis and a cylinder head connected to an upper end portion of the cylinder, the valve train of the internal combustion engine comprising: a cam follower driven by a valve train cam provided on a cam shaft, for opening and closing an engine valve; a holding body for holding a bias member to generate a bias force for biasing the cam follower to the valve train cam; and a drive mechanism for moving a supporting position of the cam follower, wherein a valve operation characteristic of the engine valve is changed when the supporting position is moved, the cam follower includes: an acting section on which the bias force directly acts; and a cam contact section coming into contact with the valve train cam by the bias force, and is supported at the supporting position, the holding body moves while following the supporting position that is moving, and the bias member is arranged between the holding body and the acting section, which are opposed to each other in a direction of a line of action of the bias force, along a plane perpendicular to a rotary centerline of the cam shaft.