Patent ID: 9115651
Filing Date: 2015-08-25
Classification: F02D,Y02T

Abstract:
1. A method of controlling a continuously variable valve timing apparatus according to current control of an oil control valve, the method comprising: a) checking whether a predetermined time has passed, after an engine starts; b) locking an actuator of the continuously variable valve timing apparatus by driving the oil control valve with different driving currents in accordance with whether the predetermined time has passed after the engine starts; c) unlocking the actuator or feed-backing control cam phase in accordance with whether the actuator of the continuously variable valve timing apparatus is unlocked; d) feed-backing the control cam phase or locking the actuator by driving the oil control valve with predetermined current in accordance with whether the control cam phase is not reached before the actuator is locked; and e) driving the oil control valve with predetermined current to maintain the control cam phase or turning off the oil control valve, after feed-backing the control cam phase or locking the actuator by driving the oil control valve with predetermined current in accordance with whether the control cam phase is not reached before the actuator is locked.