| 摘要 |
PROBLEM TO BE SOLVED: To properly control the operational pressure at the time of back starting by setting the aiming hydraulic pressure at the time of transmission based on the inertia hydraulic pressure and the torque hydraulic pressure of back driving of an engine. SOLUTION: When the driving state (S1) of an automobile belongs to a no-load region (S3), the engine rotational frequency and the water temperature of the engine at the moment are applied to a map of a back driving torque (engine brake torque) of an engine and the engine brake torque is read out (S4). Further, the engine brake torque hydraulic pressure is read out of the obtained value (S5). Further, the aiming speed change time is read out based on the turbine rotational frequency at the time of transmission judgment (S6). After that, the aiming rotational frequency change ratio is computed (S7) and the absorbed inertia hydraulic pressure is read out (S8). The aiming hydraulic pressure (operational pressure) at the time of transmission is computed from the engine torque hydraulic pressure and the inertia hydraulic pressure and a signal is transmitted (S9). Consequently, the operational pressure at the time of transmission in the back driving state can properly be set. |
