Actuator piston assembly for a rocker arm system

摘要

The present invention is directed to an actuator piston assembly for use in a rocker arm system. The actuator piston assembly is capable of actuating at least one engine valve during for example engine braking. The actuator piston assembly includes a piston body having a hollow interior, a screw assembly received within the hollow interior of the screw assembly, a biasing assembly for biasing the piston body with respect to the screw assembly, a cap assembly located within the hollow interior, wherein the biasing assembly interacts with the cap assembly and the screw assembly, and a securing assembly for movably securing the piston body to the screw assembly.