Electronic Brake Distribution

ELECTRONIC BRAKE DISTRIBUTION (EBD)
The system was enhanced and eliminates the need for the ALB system (load sensing valve). All ESP equipped models will not have ALB. The EBV system selfadapts to operating conditions. It detects the vehicles payload when the vehicle starts and pulls away. Based on the acceleration rate when the vehicle first pulls away from a standstill, the system is able to calculate the actual payload. This is a rough estimate which is used initially. Later on, the system gathers more precise information by monitoring the brake pressure and wheel speed and negative slip when the driver applies the brakes. The system will then produce a more accurate calculation of payload depending on brake retardation. The adaptation is erased when the ignition is switched off. A new adaptation will occur on the next driving cycle. By default, the system acts upon the vehicle as if in an unloaded condition (safe mode).

Once a new driving cycle begins with the vehicle in a fully loaded condition (without having gathered more precise information) the system will detect ABS actuation in the front wheels and will allow enough pressure to be applied to the rear axle, to an extent where the wheels are just about to lock up (maximum braking possible).

The system calculates the braking force at the front and rear axles. If the driver applies the brakes gently and then realizes he needs to apply the brakes further, the EBV allows the proper pressure to be applied to the front and rear brakes.

The EBV also contains a feature called corner brake system (CBS) which operates when the vehicle is braked while cornering to avoid a possible oversteering condition. The EBV monitors the wheel speed of both rear wheels to detect when the vehicle is cornering and allows precise brake pressure application to the front and rear brakes. Also when the brakes are applied during cornering, the outer wheels get more of the vehicles weight while the inner wheels get less weight and could lose traction (wheel lock up). The EBV system splits the pressure between left and right sides in addition to front and rear brakes.