| 摘要 |
An anti-skid control apparatus for a vehicle braking system in which wheel cylinders for front and rear wheels are diagonally connected in conduits includes a first fluid pressure control valve device for controlling the brake fluid pressure of the wheel cylinder of one of the front wheels or rear wheels is arranged between a first fluid pressure generating chamber of a tandem master cylinder and said wheel cylinder of the one front or rear wheel. A second fluid pressure control valve device for controlling the brake fluid pressure of the wheel cylinder of another of the front wheels or rear wheels is arranged between a second fluid pressure generating chamber of said tandem master cylinder and the wheel cylinder of the other front or rear wheel. Each of the first and second fluid pressure control valve devices consists of a three-port two-position change-over valve connected to the master cylinder side and a two-port two-position change-over valve connected in series with the three-port two-position change-over valve and the conduit connecting the three-port two-position change-over valve with the two-port two-position change-over valve being connected to the wheel cylinder of the one or other front or rear wheel of the corresponding conduit system and first judging results for relieving the brake of the front and rear wheels are logically combined with second judging results for maintaining the braking of the first and rear wheels constant, for generating instructions to control the change-over valves.
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