Internal Combustion Engine Having Valve Lifter Assembly With Misalignment Limiting Key Pin

摘要

An internal combustion engine includes a housing defining a lifter bore, and a slot in communication with the lifter bore. A valve lifter assembly is positioned within the lifter bore such that a key pin of the valve lifter assembly extends into the slot. The key pin has a contoured outer surface contacting the engine housing within the slot at a first and a second rotational orientation of the valve lifter, to limit misalignment thereof.