Hydraulic operated control system to apply vehicle brakes

摘要

A steering control system for applying brakes to engine powered vehicles having power-shifting hydraulic fluid transmissions. An interface value is provided to sense a pressure signal of hydraulic fluid that is proportional to ground speed movement of a vehicle. A control value transforms the signal generated by fluid pressure into associative structure for applying vehicle brakes in a manner proportional to vehicle ground speed, either in a forward or reverse direction. Dual pressure regulating valves are provided wherein one value is set at a higher pressure than the other values for eliminating a need for two sources of pressure and/or a pressure accumulator.