overhead-valve engine
engineering
Quick Summary
An overhead-valve engine is a type of internal-combustion engine where the valves are positioned above the cylinder head. This design allows for efficient control of intake and exhaust gases. In this configuration, a camshaft, located above the cylinder head, operates the valves through pushrods and rocker arms. This arrangement, often referred to as a valve-in-head engine, has largely replaced older designs like the L-head engine.123
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