Patent ID: 9732643
Date: 2017-08-15
CPC Classifications: F01L,F02D

Claim:
1. An engine valve actuation mechanism for producing a variable engine valve event comprises: a cam; a rocker arm; a rocker arm shaft; an eccentric rocker arm bushing; and a bushing actuation device, wherein the eccentric rocker arm bushing is disposed in an axial hole in the rocker arm, the rocker arm shaft being disposed in the eccentric rocker arm bushing with the rocker arm shaft and the eccentric rocker arm bushing having offset axial centerlines, one end of the rocker arm and the cam being enagaged to form a kinematic pair and the other end of the rocker arm being located above the engine valve, and wherein the bushing actuation device is placed in the rocker arm and drives the eccentric rocker arm bushing to rotate, the rotation of the eccentric rocker arm bushing changes the position of the rocker arm's rocking center line and thus the engine valve event.