تعريف valve train في الإنجليزية الإنجليزية القاموس.
The valves and associated mechanisms that control the flow of fuel, air and exhaust gases in an engine
The collection of parts that make the valves operate, allowing fuel intake, compression and exhaust Includes the camshaft(s) and all related drive components, and the various parts that convert the camshaft's rotary motion into reciprocating motion at the valves
The parts that operate the engine valves, camshaft, lifters, push rods, rocker arms, and springs