General Information: General Description

The CVVT (Continuously Variable Valve Timing) system is built on the camshaft, and helps the engine decrease exhaust emissions and increase engine power and fuel economy by changing the valve open/close timing of the camshaft continuously. The valve control solenoid, the main control part of the CVVT system, changes the direction of the oil path through the CVVT system by the duty control of the PCM, which changes the open and close timing of the intake and exhaust valves.