SSANGYONG RODIUS 2004.09 Manual page 475

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3. ABS SYSTEM DESCRIPTION
(1) System Description
As an add-on logic to the ABS base algorithm, EBD works in a range in which the intervention
thresholds for ABS control can not be reached.
EBD ensures that the rear wheels are sensitively monitored for slip with respect to the front
axle. If slip is detected, the inlet valves for the rear wheels are switched to pressure hold to
prevent a further increase in pressure at the rear-wheel breaks, thus electronically reproducing
a pressure-reduction function at the rear-wheel brakes.
ABS features an enhanced algorithm which includes control of the brake force distribution
between the front and rear axles. This is called Electronic Brake Distribution. In an unloading
car condition the brake efficiency is comparable to the conventional system but for a fully
loaden vehicle the efficiency of the EBD system is higher due to the better use of rear axle
braking capability.
(2) The Benefits of EBD
- Elimination of conventional proportioning valve EBD utilizes the existing rear axle wheel
speed sensor to monitor rear wheel slip.
- Based on many variables in algorithm a pressure hold, increase and/or decrease pulsetrain
may be triggered at the rear wheels insuring vehicle stability.
- Vehicle approaches the ideal brake force distribution (front to rear).
- Constant brake force distribution during vehicle lifetime.
- EBD function is monitored via ABS safety logic (conventional proportioning valves are not
monitorable).
- "Keep alive" function.
ABS
RODIUS 2004.09