The EBD control utilizes ABS, helping realize the proper brake force distribution between front and rear wheels in accordance with the driving conditions. In addition, during cornering braking, it also controls the brake forces of right and left wheels, helping to maintain the vehicle stability.
(1) Front/Rear wheels brake force distribution
If the brakes are applied while the vehicle is moving straight forward, the transfer of the load reduces the load that is applied to the rear wheels. The Skid Control ECU determines this condition by way of the signals from the speed sensors, and controls the ABS actuator in order to optimally control the distribution to the brake force to the rear wheels. For example, the amount of the load that is applied to the rear wheels during braking varies whether or not the vehicle is carrying a load. The amount of the load that is applied to the rear wheels also varies in accordance with the extent of the deceleration. Thus, the distribution of the brake force to the rear is optimally controlled in order to effectively utilize the braking force of the rear wheels under these conditions.
(2) Right/Left wheels brake force distribution (During cornering braking)
When the brakes are applied while the vehicle is cornering, the load that is applied to the inner wheel decreases. The Skid Control ECU determines this condition by way of the signals from the speed sensors, and controls the ABS actuator in order to optimally control the distribution of the brake force to the inner wheel.