Valve Train

Variable Valve Timing (VVT) Solenoid

A VVT Solenoid is a gate that controls the flow of motor oil to a camshaft phaser, which can alter the timing of the intake and exhaust valves in the motor. The VVT system will improve exhaust emissions while also increasing engine power.

Valve Train

Variable Valve Timing (VVT) Sprocket

The VVT Sprocket is a toothed wheel mounted on the camshaft that makes minor adjustments to the timing of the intake valve, exhaust valve and camshaft as a whole.

Take Deeper Dive

Anatomy of a VVT Solenoid

Take a closer look at the construction of a variable valve timing (VVT) solenoid and learn why Wells parts are the best available in the aftermarket.

Expanded image of VVT Solenoid with feature text

Summary

Valve Train

The valve train controls the operation of the intake and exhaust valves. The intake valve controls the flow of the air/fuel mixture and allows it into the combustion chamber, whereas the exhaust valve directs spent gasses out of the combustion chamber once combustion has taken place.

A valve train is a system of smaller components located within the engine. Its exact location depends on engine type and design.