Patent ID: 8430072

Claim:
An apparatus for controlling valve displacement of an internal combustion engine comprising: a rocker arm having a first arm portion and a second arm portion, said rocker arm being pivotable about a pivot interposed between said first and second arm portions; an actuation arrangement adapted to actuate, and being in contact with, said first arm portion of said rocker arm; a valve arrangement adapted to be actuated by, and being in contact with, said second arm portion of said rocker arm; a damper arrangement pivotably connected to said first arm portion at a joint connection located between the pivot and a free end of the first arm portion to move responsive to movement of said first arm portion when rotating in a first rotating direction and a second rotating direction, and adapted for damping movement of said rocker arm around said pivot; said damper arrangement is hydraulically operated means of a hydraulic fluid, the damper arrangement being pivotably connected to said first arm portion so that movement in said first rotating direction of said rocker arm around said pivot is damped and during movement in said second rotating direction of said rocker arm said hydraulic fluid is sucked.