Electrohydraulic antilock brake system for articulated vehicles

摘要

An antilock brake system for a vehicle having a front axle with right and left front brakes and at least one rear axle with right and left rear brakes is disclosed. The front axle includes a front differential with a front clutch and the rear axle includes a rear differential with a rear clutch. A controller is employed to control the brake torque applied through one or more brake valve assemblies and the controller may further shift brake torque from one wheel of an axle to the other wheel on the axle through a differential clutch valve assembly in the clutch of an open differential which forms part of the axle assembly.

主权项

1. An antilock brake system for a vehicle having a front axle with right and left front brakes and a first rear axle with first right and left rear brakes, the front axle including a front differential with a front clutch, the first rear axle including a first rear differential with a first rear clutch, the system comprising:
a controller linked to a front axle differential clutch valve assembly, a first rear axle differential clutch valve assembly and a brake valve assembly; the brake valve assembly being in communication with the right and left front brakes and the right and left rear brakes, the front axle differential clutch valve assembly being in communication with the front clutch, the first rear axle differential clutch valve assembly being in communication with the first rear clutch; the brake valve assembly, front axle differential clutch valve assembly and first rear axle differential clutch valve assembly being in communication with a source of pressurized hydraulic fluid; and at least one pilot control valve being operatively associated with one of the brake valve assembly, the front axle differential clutch assembly or the first rear axle differential clutch valve assembly.