| 摘要 |
PROBLEM TO BE SOLVED: To properly operate an interrupter even when the hydraulic accuracy of a hydraulic actuator of variable signal pressure is impaired under a low temperature. SOLUTION: A clutch C1 for forward travel as the interrupter is frictionally engaged by supplying a first hydraulic pressure (modulator hydraulic pressure PM) or a second hydraulic pressure (garage shift hydraulic pressure PG) to transmit the power. A transmission ECU 45 outputs the signal pressure of a minimum value or a maximum value by controlling the energization to the hydraulic actuator (solenoid valve DSU), when a low temperature state of hydraulic oil is detected by an oil temperature sensor 41. The first hydraulic pressure or the second hydraulic pressure is output from a hydraulic pressure switching means (garage shift valve 36) on the basis of the signal pressure, and the clutch C1 for forward travel is frictionally engaged. COPYRIGHT: (C)2004,JPO&NCIPI |
