Electronic Stability Control

ELECTRONIC STABILITY CONTROL

BY-

SHRADDHA SANGOLE

INTRODUCTION

Use of ABS and TCS Bosch, Mercedes-Benz, BMW Use of high-tech sensors Computerized technology that improves the safety Critical situations Need

SPECIFIC OBJECTIVES

Improve vehicle stability Support driver Improve handling behavior Reduce vehicle spin Consumer benefits

ELECTRONIC STABILITY CONTROL Direct extension of ABS and TCS It goes by many names Understeer and oversteer ABS- prevents locking of wheels TCS is exactly opposite

COMPONENTS OF STABILITY CONTROL SYSTEM

WHEEL SPEED SENSOR STEERING WHEEL ANGLE SENSOR

YAW RATE SENSOR HYDRAULIC SYSTEM

ELECTRONIC CONTROL UNIT

MECHANISM OF STABILITY CONTROL

Basically two mechanisms: ABS TCS

ANTILOCK BRAKING SYSTEM Allows the wheel to maintain tractive contact Decreases and increases stopping distance Also known as CAB Inclusions of ABS- ECU, speed sensor, valves, pump, steering

wheel sensor Cornering brake control (CBC)

Mechanism of ABS:

TRACTION CONTROL SYSTEM

Also known as ASR Secondary function of ABS Prevents loss of traction Shares electro hydraulic brake actuator and wheel speed

sensor, ABS ECU

Mechanism of TCS:

Use of traction control In road cars In race cars

COMBINATION OF TRC AND ABS IN STABILITY CONTROL

TRC,ABS- a system of electronic control Engine torque control in ESC Engine torque and brake control- rear wheel drive

ALGORITHM

Effectiveness of ESC

Highly effective NHTSA studies in 2004 NHTSA concluded – ESC reduces crashes by 35% SUVs with ESC involved 67% less than without ESC

IIHS June 2006 studies – 10,000 fatal accidents can be avoided

Studies show that- Reduces crashes by 43% Fatal single-vehicle crashes by 56% Fatal single-vehicle rollovers by 77-80%

COMPARISON OF ESC EQUIPPED CARS WITH CONVENTIONAL CARS

Expands functionality Passenger safety increased Without ESC and with ESC Understeering and oversteering Safety/cost ratio Market demand

FUTURE SCOPE

Market demand Customer request Increase driving safety Car stability in road traffic NHTSA

CONCLUSION

Increase in cost of cars Market expansion Contributes to drive safely

THANK YOU !