The intake valves allow a mixture of fuel and air into the cylinder, while the exhaust valves allow exhaust gases to escape. These valves are made of metal and have a specific design to ensure efficient operation.
The rocker arms are part of the valve train and are actuated by the camshaft, allowing them to open and close the valves at specific intervals during the engine cycle. The camshaft, in turn, is driven by the engine's crankshaft through a timing chain or belt.
