Upload
shraddha-sangole
View
83
Download
8
Tags:
Embed Size (px)
DESCRIPTION
ppt on electronic stability control.
Citation preview
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 !