LOCK-UP CLUTCH CONTROL DEVICE FOR VEHICLE

    公开(公告)号:US20170120918A1

    公开(公告)日:2017-05-04

    申请号:US15318415

    申请日:2014-09-03

    Inventor: Yuzuru TOHTA

    Abstract: A lock-up clutch control device is provided for a vehicle, in which, when the accelerator pedal is released in a slip engagement mode, lock-up re-engagement with reduced engagement shock is performed, thereby improving fuel economy. A torque converter having a lock-up clutch is disposed between an engine and a continuously variable transmission. The vehicle is provided with a coast lock-up control unit configured to bring the engine in a fuel cut-off state when the accelerator pedal is released in a slip engagement mode in which a differential rotation is present in the lock-up clutch with the accelerator pedal being depressed. Upon accelerator fool release operation, the coast lock-up control unit performs an engine torque control to synchronize engine rotation speed and turbine rotational speed, re-engages the lock-up clutch in a rotation synchronization state, and, after the re-engagement, and performs fuel cut-off.

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