Patent ID: 7765972

Claim:
A variable mechanical valve train for actuating a valve in an internal combustion engine, said valve train comprising: a two-part follower operatively coupled between a cam shaft and a valve, so that the follower: in an activated mode, causes a maximum lift of the valve in response to a rotation of the cam shaft; in a partial load mode, collapses partially so as to cause a partial valve lift during the rotation of the cam shaft; and in a deactivated mode, collapses in response to the rotation of the cam resulting in no valve lift, wherein the two-part follower includes a first follower arm and a second follower arm pivotally coupled to each other at a first pivot, wherein the first follower arm is pivotally coupled to the engine at a second pivot, wherein the second follower arm is mechanically coupled to the valve by a gliding element, and including a cam follower rotatably coupled at the first pivot and rollingly engaged with the cam shaft.