| 摘要 |
PURPOSE:To make braking force distribution approximate to an ideal in spite of operation delay of a solenoid valve, by regulating a pressure boost in inlet hydraulic pressure to be confined in a passage according to the operation delay of the solenoid valve to an inlet hydraulic pressure velocity, with a pressure boost sensor valve. CONSTITUTION:A pressure boost sensor valve 22 is set up in a passage 19 between a solenois valve 21 and an enclosure chamber 57. Since a pressure differential valve body 83 of this pressure sensor valve 22 receives set load of a spring 105 and closes the passage 19, the rising of hydraulic pressure in the enclosure chamber 57 is delayed whereby a pressure boost of inlet hydraulic pressure to be confined is thus regulated. Therefore, in the case where a microcomputer 115 has the solenois valve 21 closed up when a deceleration signal Sp of a deceleration detecting device 113 becomes large than a desired deceleration signal Sc of a deceleration setting device 117, even if there is closing motion delay in the said valve 21, a pressure boost of confined pressure of the enclosure chamber 57 is regulated by the said pressure boost sensor valve 22 so that set load of a spring 70 is set to a proper value. |
