In the valve train, which component lies between the valve and the pushrod?

In the valve train, which component lies between the valve and the pushrod?

• A. Rocker Arm
• B. Camshaft
• C. Wrist Pin
• D. Connecting Rod

Answer: (A)

The rocker arm is the component that lies between the valve and the pushrod. It acts as a small lever: the pushrod pushes on one end, the rocker pivots on its fulcrum, and the other end presses on the valve stem to open or close the valve. In a typical pushrod engine, motion starts at the camshaft, which moves a lifter, then the pushrod transfers that motion to the rocker arm, which converts it into valve motion. The camshaft itself is involved earlier in the sequence, not directly between the valve and pushrod. The wrist pin and the connecting rod belong to the piston/crankshaft assembly, not the valve train.

The rocker arm is the component that lies between the valve and the pushrod. It acts as a small lever: the pushrod pushes on one end, the rocker pivots on its fulcrum, and the other end presses on the valve stem to open or close the valve. In a typical pushrod engine, motion starts at the camshaft, which moves a lifter, then the pushrod transfers that motion to the rocker arm, which converts it into valve motion. The camshaft itself is involved earlier in the sequence, not directly between the valve and pushrod. The wrist pin and the connecting rod belong to the piston/crankshaft assembly, not the valve train.