Bosch DSC 3.X User Manual download pdf (Page 27)

Introduction to DSC

DSC Features

Corner Braking Control (CBC)

CBC is a feature of dynamic stability control that is designed to improve the vehicle’s sta-

bility if the driver brakes while driving through a curve. If the vehicle is braked while driving

through a curve, an unequal braking force will be applied to the wheels due to the weight

shift of the vehicle to the outside of the turn. Based on the vehicle speed and the speed

differential of the two front wheel speed sensors, the control module can determine if CBC

needs to be activated when the driver applies the brakes. If CBC is activated, the regula-

tion will pulse the wheel brakes on the outside of the vehicle to provide an equal braking

force on all four wheels.

Dynamic Braking System (DBS)

The dynamic braking system is designed to enhance the braking control of the DSC for the

driver of the vehicle. The dynamic braking control and maximum braking control are func-

tions that are programmed into the control electronics of the DSC with no additional hard-

ware changes. The Dynamic braing system features consist of DBC and MBC.

Dynamic Braking Control (DBC)

The DBC function is designed to provide the maximum braking force available during rapid

(panic) braking situations. The DSC control module looks at the inputs from the brake pedal

switch and the signal from the brake pressure sensor on the master cylinder. The criteria

for activation of DBC is how rapidly is the brake pressure built up with the brake pedal

depressed. The total criteria required for DBC activation includes:

• Brake switch ON

• Brake pressure build up > threshold value

• Vehicle road speed > 5MPH

• Vehicle not in reverse

• Not all wheels in ABS regulation

If the threshold for DBC activation is achieved, the DSC control module will activate a pres-

sure build up regulation phase through the hydraulic unit. The pressure at all wheels is

increased up to the ABS regulation point. This occurs even if the driver does not achieve

the ABS regulation point with the pedal.

The rear axle brakes are controlled with select-low regulation and the front axle brakes are

controlled individually. ABS regulation will continue until the driver releases the pedal and

the pressure in the master cylinder drops below the threshold value stored in the DSC con-

trol module.

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Bosch DSC 3.X User Manual Page 27