| 摘要 |
<p>A brake system with a hydraulic pilot brake valve for use with a vehicle requiring finite brake control with high volume pressure control. The pilot brake valve includes a modulator chamber (11) and a primary chamber (30). The modulator chamber houses a modulator piston valve (14), and the primary chamber houses a primary input piston (50) and a sleeve (34). The modulator piston valve controls a modulating fluid flow to generate amplified input forces on the input piston in the primary chamber. These input forces urge the input piston and sleeve toward extended positions, which in turn controls the flow of hydraulic fluid to the brakes. The modulator piston valve is comprised of a modulator piston (15) and a primary control piston (16), both of which are mounted for motion between retracted and extended positions and are biased toward the retracted position by springs, and a secondary control piston (17), which is capable of motion between extended and retracted positions.</p> |
