| 摘要 |
PROBLEM TO BE SOLVED: To properly prevent wrong learning of parameters which correct control inputs given to a lock-up solenoid valve.SOLUTION: A control device controls a system which changes over the engagement/release of a lock-up clutch by sequentially inputting a hydraulic fluid discharged by a hydraulic pump 51 operated by receiving the transmission of a rotational driving force from a crankshaft of an internal combustion engine into a primary regulator valve 52 and a secondary regulator valve 53 and supplying the hydraulic fluid of which pressure is regulated by these regulator valves 52 and 53 to a torque converter 7. The control device learns parameters, which correct control inputs given to a solenoid valve 57 for regulating a flow rate of the hydraulic fluid flowing toward the torque converter to increase or decrease the opening of the solenoid valve 57. The control device prohibits the learning when a predetermined phenomenon is detected such that the pressure of the hydraulic pressure regulated by the regulator valves 52 and 53 deviates from a target more than some extent. |
