IMPROVEMENTS IN HYDRAULIC ANTI-SKID BRAKING SYSTEMS FOR VEHICLES

摘要

An 'X' split hydraulic anti-skid braking system for a four-wheel vehicle, incorporates four skid sensors for providing skid signals dependent upon the behavior of respective wheel, a modulator provided in each circuit to modulate the supply of fluid to the brakes of the respective circuit, a control module for operating at least one of the modulators in accordance with the magnitude and nature of the skid signal or signals, and apportioning valves disposed in the lines between the modulators and the brakes on the rear wheels. The control module is constructed and arranged to ignore a skid signal from a sensor on a rear wheel until a skid signal is also received from the sensor on the other rear wheel, whereafter the control module is operative to operate one of the two modulators.