| 摘要 |
PURPOSE: To provide a valve timing controller of an internal combustion engine, capable of preventing a control amount from diverging and a lock pin from being unlocked unexpectly. CONSTITUTION: This valve timing controller comprises actuators 15 and 16 connected to camshafts 15C and 16C, hydraulic pressure feed devices 19 and 20 for driving the actuators, and a control means 21A for changing the phase of the camshafts, relative to a crankshaft by controlling a hydraulic pressure supplied to the actuators, according to the operating conditions. The actuators comprise a locking mechanism for setting the relative phase to the locking position and an unlocking mechanism for unlocking the locking mechanism, in response to a specified hydraulic pressure; and the control means limits the control of a valve timing to be within the specified range of the lock position set by the locking mechanism. |
