Introduction
ABS - DSC modules
Brake modules
As previously described, BMW plays a
decisive role in the chassis control topic.
Electronic brake management is not only
responsible for ensuring high braking
efficiency at all times, it is also a component of
dynamic stability control (DSC) essential to
maintaining directional stability.
DSC optimizes:
• directional stability when pulling away and
under acceleration and braking
• traction
DSC also detects unstable driving conditions
such as under or oversteering. DSC helps to
keep the vehicle on a safe course within
physical limits.
For this to be possible, DSC must know the
following dynamic driving parameters:
• the yaw rate as a measure of the rotational
motion of the vehicle about the vertical axis
• transverse acceleration as a measure of the
friction coefficient of the road surface
• the road speed
Also detected are the steering angle desired
by the driver and the brake pressure exerted
by the driver at the brake pedal. In addition,
wheel speed sensors provide information
about the speed of individual wheels. The
actual status of vehicle movement at a given
time is determined from the measured values
available. The actual status is compared with
target values calculated in the DSC control
unit. Where current actual values differ from
the target status, DSC is activated and actively
intervenes in the brake system or the engine
control.
Benefits:
With active engine and brake interventions,
DSC provides outstanding directional stability
and excellent traction in all road situations.
DSC counteracts all negative, dynamic driving
forces and thus provides, within physical limits,
the highest degree of active safety possible.
DSC also enhances driving comfort through
relaxed driving.
DSC, the driving assistance system,
comprises various modules that work together
in a complex data bus.