| 摘要 |
A solenoid valve (100, 110, 120) is provided with the following: a main valve (22) that changes the communication degree-of-opening between a first port (220) and a second port (230); a control pressure chamber (42) that biases the main valve (22) in the valve-closing direction; an auxiliary valve (31) that opens and closes a first communication passage (23a) and a second communication passage (23b) formed inside the main valve (22); a solenoid part (60) that displaces the auxiliary valve (31); and a back pressure chamber (44) and a sub return spring (35) that bias the auxiliary valve (31) in the valve-closing direction; and a pressure compensation part (70, 80, 90) that changes the biasing force of the sub-return spring (35) that acts on the auxiliary valve (31) in accordance with the pressure inside the back-pressure chamber (44). |
