| 摘要 |
A skid control system including a first brake pressure modulating valve for the front wheels, a second brake pressure modulating valve for the rear wheels and an apparatus for automatically cycling and checking the valves independently of the skid control function in order to prevent deterioration of the valve from inaction. A cycling inhibit unit is provided so that cycling of at least one of the valves is inhibited when the brakes are applied by the vehicle operator whereby the braking pressure to all of the brakes will not be relieved. |
