Patent ID: 9568094
Date: 2017-02-14
CPC Classifications: F16H

Claim:
1. A control device of an automatic transmission, the automatic transmission being connected to an engine and having a manual mode to manually select a desired gear ratio from a plurality of fixed gear ratios, the engine comprising a supercharger, the control device comprising: a manual mode detection unit that detects whether the automatic transmission is set in the manual mode; a temperature detection unit that detects a temperature of the supercharger; a temperature judgment unit that judges whether the temperature of the supercharger detected by the temperature detection unit is higher than or equal to a predetermined value; and a gear ratio changeover unit that changes the gear ratio of the automatic transmission to a higher one of the fixed gear ratios and lowers a rotation speed of the engine when the manual mode detection unit detects that the automatic transmission is set in the manual mode and when the temperature judgment unit judges that the temperature of the supercharger is higher than or equal to the predetermined value.