OPERATING THE BRAKE SYSTEM
Advanced ABS with Stability
Control
This vehicle
may be equipped
with an optional Electronic Stability
Program (ESP). ESP is a feature for
ABS-equipped vehicles that reduces
the risk of rollovers, jackkning, and
other loss of control situations. ESP
features include Roll Stability Program
(RSP) and Yaw Control.
During operation,
the ECU of the
Bendix® Advanced ABS system
constantly compares performance
models to the vehicle’s actual
movement, using the wheel speed
sensors of the ABS system, as well
as lateral, yaw, and steering angle
sensors. If the vehicle shows a
tendency to leave an appropriate travel
path, or if critical threshold values are
approached, the system will intervene
to assist the driver.
Roll Stability
Program
Bendix® Roll
Stability Program (RSP),
an element of the overall ESP system,
addresses rollover conditions. In the
case of a potential roll event, the ECU
will override the throttle and quickly
apply brake pressure at all wheel ends
to slow the vehicle combination. The
level of braking application during an
RSP event will be proportional to roll
risk.
A Real
World Example of How the
RSP System Operates
Excessive speed
for road conditions
creates forces that exceed the
threshold at which a vehicle is likely to
rollover on a higher-friction surface.
The system
automatically reduces
engine torque and applies the service
brakes (based on the projected rollover
risk) to reduce the vehicle speed,
thereby reducing
the tendency to roll
over.
RSP Example
4
(04/13) Y53-6047–2C 4-25
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