Importance

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Abstract

A valve deactivation device for a rocker arm assembly having a cam arm and a valve arm is provided. A return spring biases a locking latch pin toward an activated position to allow the cam arm and the valve arm to rotate together. The latch pin can be translated against the biasing force of the return spring to decouple the cam arm and valve arm for relative rotation. The latch pin and the latch pin housing are adjusted so as to limit the clearance between them and mate the latch pin and the latch housing. The cam follower and the actuator section of the rocker arm are mounted on, and are not independent of, the rocker shaft. Clearances between parts are controlled such that their relative rotation is strictly limited in the selective engagement of the latch pin in one section and latch pin receiving hole in the other section.

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First Claim