| 摘要 |
PURPOSE:To reduce electric-power consumption by constituting a G-valve having a solenoid with which heat generation is little and electric-power consumption is less. CONSTITUTION:A G-valve is arranged between an input oil chamber C1 communicating to a flow passage 15 and an output oil chamber C1 communicating to a sealing oil chamber (b) through a flow passage 25, and an electromagnetic mechanism consisting of an opening/closing valve which always opens the passage between the output oil chambers C1 and C2 and a solenoid for electromagnetically closing said opening/closing valve is provided. Said electromagnetic mechanism is constituted of a solenoid 31 excited by an excitation signal and fixed iron cores 33 and 34 which form a magnetic circuit with a core 30 and attraction-shift the core 20 towards an annular valve seat 37. when a preset deceleration speed is generated on a car with the application of brake, the G-valve is operated by the signal supplied from an excitation circuit 35, and the opening/closing valve for the G-valve is closed. |
