ANTI-LOCKBRAKING SYSTEM

P.HAREESH

12ME01013

IIT BHUBANESWAR

BRAKES-INTRODUCTION

Brakes are the mechanical aids which help in the deceleration of moving component, often used in terms of wheels of automobiles. Brakes are of two types, depending on principle of application: Drum Brakes Disc Brakes

DRUM BRAKE

DISC-BRAKE

ABS-OVERVIEW

The ABS was first developed for use in aircraft in 1929 by a French engineer, GABRIEL VOISIN.

It is an aid provided in the disc brakes for improved functionality.

The ABS is a system that prevents wheel lock up by automatically modulating the brake pressure and provides an opportunity for the driver to steer the vehicle during an emergency stop.

ESSENTIAL COMPONENTS OF ABS

An ABS system always consist of the following components:

Hydraulic Control Unit

Anti-Lock Brake Module

Speed or wheel Sensors (front and rear)

1.CONTROL UNIT Constantly monitors the wheel speed.

2.MODULATOR

Controls hydraulic pressure at each wheel.

3.WHEEL SENSORS

Control unit gets information about wheel speed from wheel sensors.

How ABS works?

Types Of ABS

Four-channel,Four-sensor ABS. Three-channel,Three-sensor ABS. One-channel,One-sensor ABS.

SAFETY

The ABS system is an add-on in the age old braking technology, it is worth to mention that in some vehicles an ABS operates only when the brakes are applied with huge force in order to stop the vehicle in emergency.

Most of the ABS controls are a ‘failsafe’ model .

APPLICATIONS

In almost all the cars exclusively in sedan and SUV versions.

In India, Apache 180 and Honda CBR250 comes with ABS.

In some the small jet planes ABS is used. Maruti Suzuki swift desire uses powerful ABS.

ADVANTAGES OF ABS

The ABS improves the steering control during the emergency stops.

It fulfills the motive of stopping in the shortest possible distance.

During the slippery and wet surfaces it improves the brake efficiency.

Traction control.

DISADVANTAGES

It is very costly. Maintenance cost of a car equipped with ABS

is more. However, on loose surfaces like gravel or

snow-covered pavement, an ABS can significantly increase braking distance, although still improving vehicle control.

Conclusion

Statistics show that approximately 40 % of automobile accidents are due to skidding.

These problems commonly occur on vehicle with conventional brake system which can be avoided by adding devices called ABS.

If there is an ABS failure, the system will revert to normal brake operation. Normally the ABS warning light will turn on and let the driver know there is a fault

References

Google Wikipedia www.me.utexas.edu Youtube www.howstuffworks.com/auto-parts/brakes/bra

ke-types/anti-lock-brake

ANY QUERIES?

THANK YOU