ELECTRONIC STROKE SENSOR FOR AIR DISC BRAKE

摘要

A vehicle brake monitor assembly for an air disk brake includes a brake actuator having a pushrod projecting from inside a chamber of said brake actuator. The pushrod releasably actuates a lever arm of a caliper thereby moving the disk brake into a braking position when the pushrod is in an extended position and releasing the disk brake from the braking position when the pushrod is in a retracted position. The pushrod includes a pushrod shaft and a contact member biased in a telescoping relationship relative to the pushrod shaft and the lever arm of the caliper abuts the contact member counteracting the bias of the contact member. A sensor is integrated with the assembly proximate the contact member and detects movement of the pushrod relative to the lever arm and to the pushrod shaft.

主权项

1. A method of detecting a fault condition of an air disk brake, comprising the steps of:
providing a brake actuator having a pushrod being extensible from said brake actuator for actuating a lever arm of an air disk brake; monitoring length of extension of said pushrod from said brake actuator; monitoring air pressure of said brake actuator; detecting an out of adjustment fault condition of an air disk brake based on said monitoring length of extension of said pushrod of said brake actuator and said monitoring air pressure of said brake actuator without sensing a condition of the air disk brake.