| 摘要 |
A lock-up control system for a fluid coupling, interposed between an engine and automatic transmission, which includes a lock-up clutch and is locked up by the lock-up clutch so as to directly couple the engine and the automatic transmission together, sets an increase rate, at which a locking pressure increases during locking of said fluid coupling, small at an early stage of locking and large at a later stage of locking.
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