Asynchronous rear dump logic in ABS control systems.

摘要

An anti-lock ABS braking system for a road vehicle, comprising a respective dump valve for each brake actuator which enables pressure to be selectively dumped from that actuator to release the braking action of the relevant rear wheel; means for establishing that a given rear wheel of the vehicle is still operating in a stable condition; means for establishing the aggregate dump valve time of the rear wheel opposite to that under consideration; and means for allowing the brake pressure at the still stable rear wheel to continue to rise for a prescribed period and to then actuate its dump valve for a period corresponding to the measured aggregate dump time of the opposite rear wheel. <IMAGE> <IMAGE> <IMAGE>