| 摘要 |
PROBLEM TO BE SOLVED: To shorten the speed change time as well as to prevent generation of speed change shock when the second speed change is judged during the first speed changing operation. SOLUTION: When downshift to the fist gear speed is judged during the upshift operation from the first gear speed to the second gear speed, oil pressure of the second speed changing operation is controlled according to the speed change state of the first speed changing operation in the judgment of the second speed change. For instant, torque phase in the upshift operation from the first gear speed to the second gear speed, namely, downshift to the first gear speed is judged before speed change in which a change of the rotation of an input shaft is generated is started, only completion control of downshift is performed, while, when inertia phase, namely, downshift to the first gear speed is judged after speed change is started, oil pressure control from initial speed change control of downshift is performed. |
