Patent ID: 7503876
Filing Date: 2009-03-17
Classification: F16D,F16H,Y10T

Abstract:
1. An apparatus for controlling an automatic transmission comprising: a standby state determination device which determines whether a vehicle is in a departure standby state or not, a vehicle speed detecting device which detects vehicle speed; a first gear shift control device which, when it is determined by said standby state determining device that the vehicle is in a departure standby state, and the vehicle speed detected by said vehicle speed detecting device is greater than or equal to a predetermined value, shifts the transmission to a neutral, and engages a mechanical clutch; a reverse rotation determination device which determines whether the transmission is being rotated in reverse or not based on a rotational fluctuation on a driving side or a driven side of the mechanical clutch in a process for engaging the mechanical clutch by said first gear shift control device; and a gear shift inhibiting device which, when determined by said reverse rotation determination device that the transmission is being rotated in reverse, prevents said transmission from being shifted to a drive stage.