BENDIX BW2727 Merkblatt

Bendix Commercial Vehicle Systems LLC • 901 Cleveland Street • Elyria, Ohio 44035 • 1-800-AIR-BRAKE • www.bendix.com
BW2727 ©2011 Bendix Commercial Vehicle Systems LLC, a member of the Knorr-Bremse Group • 04/11 • All Rights Reserved • Printed in U.S.A. 

Driving Scenario:

The vehicle speed around a curve exceeds the ability for the tires to 
hold the vehicle orientation, causing the vehicle to slide and begin to 
over-steer. The momentum of the load further pushes the truck, 
exacerbating the situation.

System Response:

The Bendix

®

 ESP

®

 full stability system senses the driver’s intended path and 

compares it to the actual situation to identify an over-steer condition. In an 
attempt to correct the vehicle orientation and reduce speed if required, the 
system quickly applies braking pressure to only the appropriate wheels.  (The 
Bendix ESP system reacts similarly for under-steer situations.)

The Importance Of Full Stability... Bendix ESP for Medium-Duty Trucks

Rollovers and loss-of-control situations happen in the blink of an eye. That's why a full stability system makes sense for medium-duty applications.
Stability for medium-duty trucks needs to:
1) Detect potential instability situations quickly and completely;
2) Intervene quickly and accurately;
3) Apply ample braking where needed; and
4) Perform on wet, snow and ice covered surfaces.

Driving Scenario:

A vehicle enters a curve too fast, on high friction pavement, resulting 
in high lateral (side) forces acting at the vehicle's center of gravity (CG). 
The high friction between the wheels and the pavement create a 
“hinge” effect allowing the forces at the CG to push the vehicle over.

System Response:

The Bendix

®

 ESP

®

 full stability system applies pressure to all truck brakes and 

reduces engine throttle to quickly reduce vehicle speed and therefore 
mitigate the tendency of the vehicle to roll over.

   

  Wheel Speed Sensor 

Monitors the wheel rotation at individual  Allows the system to determine vehicle speed   

       



   

wheels 

and monitor wheel lock-up to optimize braking

  Lateral Acceleration Sensor 

Senses the side or lateral forces acting 

Side or lateral forces are used to detect  

       



   

on the vehicle 

a roll situation

  Steering Angle Sensor 

Senses the driver’s steering 

An early indicator of a potential critical maneuver.         



   

and direction 

Helps the system to respond faster

   

 

and more accurately

  Brake Pressure Sensors 

Measures the driver’s braking demand 

Allows the system to accurately supplement  

       



   

 

the driver throughout the maneuver

  Yaw Rate Sensor 

Senses the rotation of the vehicle 

Allows the system to monitor the true  

       



   

 

orientation of the vehicle and compare it to the

  

 

driver’s intention

  Multi-level Sensing 

Cross checks multiple system sensors 

Improves the reaction time and accuracy of the 

       



 

  

 

intervention

  Tuning  

Different trucks have different stability 

Improves the ability of the stability system to  

       



   

characteristics. Tuning adapts the stability  match the intervention of the situation

   

system to account for these differences

  All Axle Braking 

The ability to apply brakes at all axles 

Provides the best opportunity to reduce vehicle 

       



   

 

speed in the shortest time

  Individual Corner Braking 

The ability to apply individual brakes 

Provides the capability to control under- and  

       



  

 

over-steer situations