Patent ID: 8140231

Claim:
An abnormal-period automatic shift control apparatus of an automated manual transmission of an automotive vehicle in which rotation of an engine is inputted through an automatic clutch, a desired shift stage is realized by automatic-clutch engagement-and-disengagement control and automatic gear shifting for a changeover in a transmission gear train, using working oil from an engine-drive pump as a working medium, and the input rotation from the engine is speed-changed based on the realized shift stage, and then the speed-changed rotation is outputted, comprising: a controller comprising: (a) a starting-period shift-stage thrown state detecting section configured to detect whether the automated manual transmission is in a starting-period shift-stage thrown state where the automated manual transmission is thrown into a shift stage during a starting period of the engine; (b) an undesirably-kept-engaged automatic clutch failure detecting section configured to detect whether a clutch failure that the automatic clutch remains engaged undesirably, occurs; and (c) a neutral-range-period abnormality countermeasure section configured to inhibit a supply of the working oil used for automatic-clutch engagement-and-disengagement control and automatic gear shifting, for preventing the vehicle from beginning to move, while a selected operating range is a neutral range at which power transmission through the automated manual transmission is disabled and rotation of a transmission output shaft is not mechanically restricted, under a condition where the automated manual transmission is in the starting-period shift-stage thrown state during the starting period of the engine and the clutch failure that the automatic clutch remains engaged undesirably, occurs.