Honda Motor Co., Ltd.

Christoph Karger

Yoshiharu Saito

Yasushi Inagawa

Adding a driver's intention and running environments to conditions for cancelling a delay of an upshift after kickdown enables the upshift at a suitable timing depending on a vehicle's running environments and aspects of the driver's operation. A shift control device for automatic transmission calculates an allowance driving force of the vehicle when upshifting at a current vehicle speed and throttle opening, and also calculates a threshold value of a driving force depending on an average value of throttle opening variation, an average value of vehicle speed variation, a cornering judgment of a winding degree of a road on which the vehicle is running and a gradient judgment of a gradient of a road surface on which the vehicle is running. Then, after comparing the threshold value and the allowance driving force, the device permits an upshift when the allowance driving force is larger than the threshold value.

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Offenbach/Am Main, Germany

Christoph Karger