Anti lock braking system

Anti lock braking system .....used in now a days to provide more comfort on application of brake .

1. ANTI LOCK BRAKING SYSTEM SUBMITTED BY AKASH SINGH ( ME 3 rd YEAR)

2. ABSTRACT In today’s world, braking is the most important system in an Automobile. Brakes are energy conversion devices , which convert kinetic energy of the vehicle into thermal energy . In Antilock Braking System, we can prevent the locking of the wheel and hence skidding, using an Electro Mechanical Control System.

3. INTRODUCTION In recent years, with advancement in design & technology, Disc brakes are fast replacing drum brakes. ABS was first developed for Aircrafts braking system but soon started replacing the conventional braking system in trucks and cars. Recent improvements in ABS allows to prevent wheel when accelerated on wet or slippery surface.

4. OPERATION PRINCIPLE “ Limiting the pressure to any wheel which decelerates too rapidly” is the basic principle employed in ABS . A speed sensor is used for measuring the speed of the wheel and sends it constantly to the computer . Depending on the initial brake pressure and the speed of the wheel, the computer modulates the brake pressure as fast as fifteen times per second.

5. STRUCTURE & OPERATION OF THE ABS

6. Components of ABS Kit Brake Calipers Speed Sensor in wheels A Hydraulic Motor Pressure Release Valves Computer controlled module

7. TERMINOLOGY ABS Actuator ‐Work horse of the ABS . ABS Channel ‐Hydraulic line connecting ABS actuator and the wheel . ABS Sensor ‐It consists a gear shaped sensor rotor and sensor element. ABS Valves ‐Valves are used in brake line for controlling the each brake depending on its position .

8. TERMINOLOGY A- speed sensor B- control module C- hydraulic unit with releasing valves D- brake pipe ABS Pumps ‐It is used for pumping the backup pressure from the reservoir to the brake cylinder . ABS Pulse or Modulation ‐The braking pressure is fluctuating fifteen times per second for preventing the locking of the wheel.

9. With ABS V/s Without ABS in Bikes

10. DIFFERENT TYPES OF ABS SYSTEMS 1 or 2 channel 2‐Wheel (Rear ABS ) 2 Channel 4‐Wheel Crisscross 3 Channel 4‐Wheel 4 Channel 4‐Wheel 4 Channel 4‐Wheel is considered better than the other three system.

11. ADVANTAGES It can be used for reducing the stopping distance . It enables to steer while the brakes are firmly applied. It allows braking firmly on surfaces with different level of grips. It can review and adjust the driver’s driving. Safe & Effective

12. DISADVANTAGES Drivers may take more risks when driving with vehicles fitted with ABS . In exceptional circumstances, some drivers have the skill to stop the vehicle in a shorter distance than achieved by an ABS equipped vehicle . People who are inexperienced in using ABS may respond inappropriately when they activate the system . Maintenance of a Car equipped with ABS is required more. Very Costly

13. CONCLUSION Because of its role in preventing the wheels from locking and better steering control during braking, Anti‐lock Braking System should be made mandatory for all vehicles.

14. THANK YOU !