Troubleshooting guide

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www.bendix.com 1-800-AIR-BRAKE (1-800-247-2725)
Advanced ABS Operation, Features
Driving Scenario:
Driving speed exceeds the
threshold, and the resulting lateral
force causes the vehicle to slide or
jackknife on lower-friction surfaces.
Action by Bendix Stability Solutions:
System applies the appropriate
brakes to reduce speed and properly
align the vehicle, thereby reducing the
tendency to slide or jackknife.
The Bendix RSP (Roll Stability Program)
Bendix Advanced ABS RSP, an element of the overall
ESP system, addresses only rollover conditions and is
an alternative for longer wheelbase, higher center of
gravity straight trucks. Because of their longer
wheelbase these vehicles are less likely to yaw than
shorter wheelbase trucks or tractors. In the case of a
potential roll event, the system will remove the throttle
and quickly apply brake pressure at all wheel ends to
slow the vehicle combination below the threshold.
With the addition of a steering angle sensor, the
performance of the ESP system in a rollover scenario
can be enhanced due to the potential for earlier system
intervention. Correspondingly, a roll stability system
without a steering angle sensor would intervene later,
potentially resulting in a reduced stability margin.
Steering Angle Sensors
The sensor enables the Bendix Advanced stability
system to capture the driver’s steering input and
intervene if a yaw correction is indicated. The sensor
also provides the earliest indication of an increase in
lateral acceleration leading to a potential roll event,
resulting in much higher stability margin when a vehicle
is equipped with a steering angle sensor.
Brake Demand Sensors
Bendix Advanced stability system was designed to
supplement the drivers actions. By directly measuring
driver brake demand, the system can accurately
transition between driver-intended and system-
intended braking pressure seamlessly. For example, if
in a certain maneuver, the system calculates that 40 psi
is needed and the driver is only applying 20 psi, the
system compensates automatically to deliver the
needed 40 psi. If, however, during the same maneuver
the driver steps on the brake pedal quickly to apply a
higher (above 40 psi) braking level the driver’s braking
input overrides the temporary change made by the
system.