BENDIX BW2727 User Manual

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BENDIX® ESP® FULL STABILITY SYSTEM

AN INTELLIGENT INVESTMENT IN STABILITY FOR MEDIUM-DUTY VEHICLES

The Bendix® ESP® stability system is a full-stability technology for mediumduty vehicles in a wide variety of applications – from ambulance and fire trucks to utility, government and construction vehicles. Full stability delivers more performance than rollover systems on a wide variety of road conditions, thanks to additional sensors and braking capability. Plus, Bendix ESP meets the requirements of industry standards, including NFPA 1901-2009 and KKK-A-1822-F.

Safety Is The Bottom Line

Most people don’t think of a stability system as contributing to the bottom line. But when you consider the costs of accident related vehicle damage, downtime, clean-up etc... it’s easy to see how it does. For fleets looking to reduce incident potential and improve profitability, Bendix provides proven value.

ESP® full stability system

Does more than just rollover mitigation – Bendix ESP also addresses many of the

more than

"loss of control" situations that can lead to rollovers or other accidents.

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A Competitive Advantage For Your Fleet

• Protect Fleet Profitability – Every dollar you save through incident reduction goes directly to the bottom line. Consider this… just to stay profit (bottom line) neutral, a fleet operating at a 5% margin would need to increase revenue by 20 times the cost of accident related losses. That means reducing accident costs by $100,000 is equivalent to growing top line sales by 2 million dollars.

• Help Driver’s Maintain Control – With vocational vehicles, often drivers don’t know the vehicle is tipping because they can’t feel what’s happening until it’s too late. Take cement mixers, for example: an asymmetrical load can alter the vehicle’s center of gravity (CG) without driver knowledge, leading to a rollover situation. The Bendix ESP stability system can not only help to mitigate this event, but driving data can be monitored and used as a proactive training tool.

• Strengthen Operational Efficiency – The reliability of genuine Bendix components, the familiarity of an ABS-based system, along with a portfolio of easy-to-use diagnostic tools means less training and more vehicle up-time.

• Boost Driver Retention – A commitment to safety improves driver morale and can reduce the potential of drivers leaving the profession or going to a competitor.

Bendix® ESP® Full Stability System –

What is it and how does it work?

The Bendix® ESP® full stability system continuously monitors a

variety of vehicle parameters and sensors to determine if the vehicle

is reaching a critical stability threshold. When such a situation develops, the

ESP® full stability system will quickly and automatically intervene to assist

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the driver. The Bendix

as well as de-throttle the engine typically faster than a human.

However, no stability system replaces the most important safety

components of all... a skilled, alert professional driver exercising safe

driving habits, as well as continuous, comprehensive driver training.

ESP® system can selectively apply vehicle brakes,

The Full Stability Solution

Bendix® ESP® is the first widely-available ABS-based truck stability system capable of recognizing and assisting with both rollover and vehicle under- and over-steer driving situations on the widest range of road conditions. With key sensors and braking capability, including steer axle braking, Bendix ESP delivers a higher level of stability performance on both dry and wet surfaces than systems that only focus on rollover mitigation. Features include:

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• Core ABS – Prevents wheel lock-up to help drivers maintain

• Diagnostics – Bendix ESP offers a suite of diagnostic tools to

• Serviceability – Because Bendix

ESP® – Bendix ESP helps in both rollover and loss-

of-control situations. The system helps to mitigate vehicle jackknifes, slides, skids and loss-of-control through advanced monitoring of a variety of vehicle parameters and automatic and selective application of vehicle brakes. Bendix ESP, through its roll stability program, helps to mitigate rollovers through advanced sensing and automatic application of vehicle brakes.

Smart ATC™ – Unlike other traction control products,

the Bendix adjustments based on the vehicle orientation (straight vs. curve), speed and the driver’s throttle input.

steering control while braking. Compliance with FMVSS 121 for air brake systems.

keep your trucks on the road. From traditional blink codes and “Chuff” test at vehicle start, to a portable remote diagnostic unit (RDU) and Bendix based diagnostic software.

most of the components are the same familiar parts used on your current ABS and ATC system. The additional stability system components are based on proven technology and require only simple direct part replacement.

Smart ATC™ traction control system makes

ACom™, our comprehensive, computer-

ESP® is an ABS-based system,

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BENDIX® ESP® FULL STABILITY SYSTEM

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.

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 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.)

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.

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.

The table below identifies the key features and components of the Bendix ESP full stability system:

Bendix® ESP Feature What it does Why it matters Full Stability

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. 

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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 

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the driver throughout the maneuver

Sensor Technology

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

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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

Performance

Enhancement

Individual Corner Braking The ability to apply individual brakes Provides the capability to control under- and over-steer situations

Bendix® ESP® full stability system for medium-duty vehicles helps you make an intelligent investment in stability. For more information talk to your Account Manager, call 1-800-AIR-BRAKE (1-800-247-2725) or visit www.bendix.com today.

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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.