Rocker arm assembly for valve actuation systems

Abstract

A rocker arm assembly for a valve actuation system of an engine is disclosed. The engine has at least one valve. The rocker assembly includes a rocker arm with a valve retention end, a valve bridge with a rocker engagement portion. The rocker engagement portion sustains an engaged position and a released position relative to the valve retention end. Further, a spring unit is disposed between the valve retention end and the rocker engagement portion. In the engaged position, the valve retention end is in operable abutment with the rocker engagement portion. In the released position, the spring unit is configured to provide a reaction force between the valve retention end and the rocker engagement portion to disconnect the valve bridge from the rocker arm.

What is claimed is: 
     
         1 . A rocker arm assembly for a valve actuation system of an engine, the engine including at least one valve, the rocker arm assembly comprising:
 a rocker arm having a valve retention end;   a valve bridge having a rocker engagement portion, the rocker engagement portion sustaining an engaged position and a released position relative to the valve retention end; and   a spring unit disposed at an interface defined between the valve retention end of the rocker arm and the rocker engagement portion of the valve bridge,
 wherein in the engaged position the valve retention end is in operable abutment with the rocker engagement portion, 
 wherein in the released position the spring unit is configured to provide a reaction force between the valve retention end and the rocker engagement portion to disconnect the valve bridge from the rocker arm. 
   
     
     
         2 . The rocker arm assembly of  claim 1 , wherein the spring unit includes a first biasing member extended laterally from the valve retention end and a second biasing member extended diametrically oppositely to the first biasing member,
 wherein the first biasing member defines a first remote curvature portion and the second biasing member defines a second remote curvature portion, with both the first remote curvature portion and the second remote curvature portion being resiliently resting about an outer surface of the valve bridge, in the engaged position.   
     
     
         3 . The rocker arm assembly of  claim 1 , wherein the valve bridge includes a pocket and the spring unit is a resilient member, with at least a portion of the resilient member being disposed within the pocket and an opposed end of the resilient member being in abutment with the valve retention end.