Brake system for a work vehicle

Abstract

A brake system for a work vehicle having ground-engaging members supporting a chassis includes a service brake for stopping movement of the ground-engaging members when the service brake is engaged and a park brake for preventing further movement of the ground-engaging members after movement of the ground-engaging members has been stopped by the service brake. The park brake includes a friction pack and an actuator selectively engaging the friction pack to impede rotation of one or more of the ground-engaging members. A ground speed sensor generates ground speed signals indicative of a ground speed of the work vehicle and a brake activation sensor that generates a brake activation signal each time the actuator engages the friction pack. A controller having a processing and memory architecture is configured to execute logic instructions to accumulate the brake activation signals generated by the brake activation sensor, associate the brake activation signals with the ground speed signals received from the ground speed sensor, determine if the actuator engaged the friction pack while the ground-engaging members were in motion based the brake activation signals and the ground speed signals and in response estimate a holding capability of the park brake, and generate a service alert signal to an output device of the work vehicle when the estimated holding capability of the brake is less than a predetermined threshold holding capability.

Dependencies are inferred from the claim text.