| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a control device of an automatic transmission capable of setting a more suitable gear ratio. <P>SOLUTION: A parameterα(OUT) having an accelerator opening, a vehicle speed and driving force as components is set according to information indicating an operation of an operator and information indicating environment in which a vehicle travels. A gear stage is set in accordance with a gear change map setting gear stages according to accelerator openings, vehicle speeds and driving force and in accordance with the parameterα(OUT). In the gear change map, gear change lines are specified so that an increase rate of the driving force to the vehicle speed is equal to or larger than zero. The downshift line is specified so that the more the accelerator opening is large, the more the driving force is small. When both the condition that a variation of the accelerator opening after a gear stage is changed last time is larger than a threshold and the condition that a variation of the driving force after the gear stage is changed last time is larger than a threshold are not satisfied, downshift after upshift and upshift after downshift are prohibited. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
