1. The continuously variable valve timing system CVTC
CVTC (continuously variable valve timing system) Nissan unique technique, loaded on a vehicle CVTC system, the engine management system running the process, the real size of the degree of change of the engine load, road travel, throttle opening and the engine acceleration response information, etc., transmitted to the intelligent high engine monitoring system (ECU), continuing via a computer program of the ECU after the calculation precision, the computer will be based on the engine speed to determine the optimum time point when the intake valve open and close, and the valve timing change CVTC continuous control of the open and closed positions, and a camshaft drive mechanism is control to improve intake efficiency of the combustion chamber, so that the exhaust gas and completely discharged from the cylinder, under a variety of speed to provide optimal combustion efficiency.