| 摘要 |
PURPOSE:To positively control the operation of an anti-skid control device, by transmitting a hold signal to a first solenoid valve simultaneously with transmitting of a release signal to the second solenoid valve to release the pressure of braking. CONSTITUTION:The adjustment of brake pressure may be made, even after shut- off of the communication between the master side and the wheel side, due to movement of a plunger 36 disposed between the connecting port 7 of the master cylinder and the connecting port 33 of the wheel cylinder. A first solenoid valve A isolates a control chamber having therein a dynamic pressure source 86 and a plunger 36. A second solenoid valve B is disposed between the solenoid valve A and the control valve to communicate the control valve with the dynamic pressure source and the pressure releasing side. A release signal is transmitted to the second solenoid valve B while a hold signal is transmitted to the first solenoid valve A to release brake pressure, and after disappearance of the release signal the hydraulic pressure of the wheel cylinder is at once turned into its constant hold value from its lowered value. |
