Oliff & Berridge, PLC
Control system for automatic transmission
 A control system for an automatic transmission having a running status detector for detecting the running status of a vehicle to include an input torque from the engine; a running resistance estimator for estimating a running resistance on the basis of the running status of the vehicle; and shift characteristic changer for changing shift characteristics in accordance with the running resistance of the vehicle. The control system further comprises an engine output controller for reducing the output of the engine by a sub-throttle valve which acts independently of the driver at an overrun time of drive wheels; and an action status detector for detecting the action status of the sub-throttle valve. The running resistance estimator estimates the running resistance of the vehicle on the basis of the running status detector and the action status detector of the sub-throttle valve. 
Aisin AW Co., Ltd.
F F F B F B B F F
F16H F16H F16H B60W F16H B60K B60W F16H F16H
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Muneo Junichi Masao Yoshikazu Masamichi
Kusafuka Nishimura Saito Sakaguchi Unoki