EBD device

EBD device

The integration of the EBD function into the normal implementation logic of the ABS system allows the simultaneous operation of the two strategies; as a result, the system normally intervenes to keep the "creeping" of the rear wheels within values very close to the ideal ones with the possibility, however, of intervening with the ABS strategy when one rear wheel tends to lock (for example on a surface with poor adhesion).

The graph below illustrates the braking pressure implementation strategy, operated by the electronic control unit, according to the input data, represented by the signal for the rotation speed of the wheels of the two axles.

• E Rear wheel speed
• F Front wheel speed
• G Front wheel pressure
• H Rear wheel pressure

Operation of the EBD device

The braking pressure for the rear axle is implemented by the control unit in a similar way to the description of the operation of the ABS system during the pressure increase, maintenance and reduction stages.