| 摘要 |
PROBLEM TO BE SOLVED: To favorably reflect learning of grip-change between frictional engagement elements on shift control by including an oil pressure control changing means changing the control mode of oil pressure for at least one of the first and second frictional engagement elements according to the shifting state of a sub-transmission in an automatic transmission. SOLUTION: An automatic transmission 4 capable of attaining shifting from a first shift step to a second shift step, an oil pressure control means 5, and a sub-transmission 80 are arranged. The oil pressure control means 5 includes an oil pressure control changing means changing the control mode of oil pressure for at least one of a first frictional engagement element (a second brake) 23 and a second frictional engagement element (a second clutch) 17 according to the shifting state of the sub-transmission 80. Hereby the control mode of oil pressure for at least one of the first and second frictional engagement elements 23, 17 can be favorably changed according to the shifting state of the sub-transmission 80. |
