| 摘要 |
PROBLEM TO BE SOLVED: To provide a control device of an automatic transmission in which a gear change feeling desired by a driver is obtained by controlling a rise of oil pressure of a frictional engagement element without being influenced by a disc spring, an accumulator, etc. in the automatic transmission. SOLUTION: A target time of a torque phase on a gear change is calculated (S100). An engine torque is estimated based on parameters showing engine operating conditions (S102). At the end of the target time of the torque phase when an initial value is calculated of the transmitted torque of a hydraulic clutch (frictional engagement element) of a transmission destination, a torque target inclination during a period until it reaches a value equivalent to the engine torque is calculated (S104). The torque target inclination calculated is converted into an oil pressure target inclination (S106). Searching for first and second characteristics preset from the inclination etc., a command value QAT of the oil pressure to the hydraulic clutch Cn of the transmission destination is calculated (from S108 to S112). Then, the oil pressure is supplied based on the calculated command value (S114). COPYRIGHT: (C)2011,JPO&INPIT |
