| 摘要 |
A hydraulic control device for automatic transmission, comprising: a first switching valve (10) capable of switching between a first position at which input source pressure (PL) is output as forward range pressure (P1, PD), in a state in which a first signal pressure (PS1) is off, and a second position at which the input source pressure (PL) is output as reverse range pressure (P2, PR), in a state in which the first signal pressure (PS1) is on; and a second switching valve (20) capable of switching between a third position at which the forward range pressure (P1, PD) is output to a transmission control unit (40), in a state in which a second signal pressure (PS2) is off, and a fourth position at which the reverse range pressure (P2, PR) is output to the transmission control unit (40), in a state in which the second signal pressure (PS2) is on. |
