| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydraulic control device which improves lubricity while maintaining a full lock-up state in a lock-up mechanism. ! SOLUTION: A hydraulic control device controls a pressure of an apply chamber on a turbine runner side and a release chamber on a front cover side formed by partitioning a space between a front cover and a turbine runner of a torque converter by a clutch plate. The hydraulic control device includes: a differential pressure reduction mode execution determination unit which, when in a full lock-up state, applies an apply pressure to the apply chamber based on a parameter related to a present rotation torque generated by an engine, and which determines whether or not to execute a differential pressure reduction mode for applying a release pressure to the release chamber; and a differential pressure control unit for controlling a differential pressure control valve so that, when executing the differential pressure reduction mode, the differential pressure between |
