Advanced Braking

Operating Principals of ABS

The stop light switch provides a signal that the ECU can use to determine that the brakes are being applied.

The ECU, through the monitoring of the wheel speed sensor signals, calculates any sudden reduction in wheel speed. The ECU will now control the hydraulic brake actuator to provide optimum brake fluid pressure to each brake to achieve maximum deceleration conditions. The hydraulic brake actuators operates on control signals from the ECU to ‘reduce’, ‘hold’ or ‘increase’ brake fluid pressure as necessary in order to achieve and maintain an ideal slip ratio of 10% to 30% and avoid wheel lock up. These changes of braking state can be effected at a frequency of up to 60 times per second.