Volkswagen Passat W8, Руководство по обслуживанию, Страница: 29 / 52

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The hydraulic brake assistant system (BAS)
You will find explanations on the design and function of the hydraulic brake assistant system
(BAS) in Self-Study Programme No. 264.
is integrated in the ABS control unit.
Accident research studies have shown that the
majority of drivers do not press hard enough on
the brakes in critical situations. This means that
pressure build-up is insufficient to reach
maximum vehicle deceleration.
ABS control range
Emergency braking
Normal braking
Pressure sensor G294
S261_034
S261_043
Pressure rise in brake system
Time [t]
B
rak
e
p
res
su
re
[
p]
The pressure sensor G294 detects the pressure
rise in the brake system. The control unit
recognises
an emergency braking action by the rapid rise in
brake pressure within a specific period of time.
After it detects the emergency situation, it
increases the brake pressure within the ABS
control range. This shortens the stopping distance
and the car comes to a standstill faster.