Patent ID: 11015493

Abstract:
An exhaust valve rocker arm assembly operable in a combustion engine mode and an engine braking mode includes: a rocker shaft that defines a pressurized oil supply conduit; a rocker arm that receives the rocker shaft and rotates around the rocker shaft, the rocker arm including a rocker arm oil supply passage defined in the rocker arm; a valve bridge for engaging a first exhaust valve and a second exhaust valve; a hydraulic lash adjuster assembly, disposed on the rocker arm, including a first plunger body movable between a first position and a second position; and a check valve, disposed on the rocker arm, including an actuator for selectively releasing pressure in the hydraulic lash adjuster assembly. In the engine braking mode, by rotation of the rocker arm the pressurized oil supply conduit is brought into fluid communication with the rocker arm oil supply passage.