ANTI LOCK BRAKING SYSTEM [ABS]

An advance braking technology

Presented by:Ajit dubeyRoll No-4112604Mechanical [4th year]Yamuna Institute of Engg. & Tech.

INTRODUCTION TO BRAKS

It is one of the most importantdevice.

Used to retard or stop the vehicle. Kinetic energy translated to heat

energy.

Kinetic energy increases with thesquare of the velocity.

K.E.=1/2mv2

ANTI LOCK BRAKING SYSTEM

Anti-lock braking system (ABS) is an automobile safety system that allows the wheels on a motor vehicle to maintain tractive contact with the road surface according to driver inputs while braking, ABS generally offers improved vehicle control and decreases stopping distances on dry and slippery surfaces.

HISTORY OF ABS

ABS was first developed for Aircraft in1929 byFrench Automobile Et Aircraft Pioneer GabrielVoisin.

The German Companies BOSCH & Mercedes-Benz pioneered the first electronic version for use on Mercedes-Benz Cars in1936.

In 1978 Bosch And Mercedes-Benz Introduced the first completely Electronic 4 Wheel Multi-Channel ABS system in trucks and the Mercedes-Benz S-Class.

In 1988 BMW became the world’s firstmotorcycle manufacturer to introduce anelectronic/hydraulic ABS system, this ontheir BMW K100.

In 1992 Honda launched its first ABS systemthis on the ST1 100 Pan European.

CONSTRUCTION

1. ABS control module [ECU]

2. Hydraulic pump & valves

3. Wheel speed sensor

4. Break caliper

HOW DOES ABS WORK

Sensors at each of the four wheels sense the rotation of the wheelSensors ECU releases brake line pressure wheel turns

again. then ECU applies pressure again stops the rotation of the wheel

releases it again and so on.This keeps the wheel just at the limit before locking up and

skidding no matter.ABS system can maintain extremely high static pressure and must be

disabled before attempting repairs.

ABS IN FOUR WHEELER

ABS IN FOUR WHEELERS

ADVANTAGES & DISADVANTAGES OF

ABSAdvantages1. It allows the driver to maintain directional stabilityand control over steering during braking.

2. Safe and effective.

3. Automatically changes the brake fluid pressure ateach wheel to maintain optimum brake performance.

4. ABS absorbs the unwanted turbulence shock wavesand modulates the pulses thus permitting the wheelto continue turning under maximum braking pressure.

Disadvantages1.Cost - An ABS can be expensive to maintain. Expensive sensors on each wheel can cost hundreds of dollars to fix if they get out of calibration or develop other problems. For some, this is a big reason to decline an ABS in a vehicle.

2.System damage - A variety of factors can cause the system to be less effective, and can present with everything from shuddering of the vehicle to loud noises while trying to stop

COMPARISON

APPLICATION IN INDIAN CAR

1.Maruti Suzuki Swift2.Maruti Suzuki Ritz3.Skoda Superb4.Honda Accord5.Honda City6.Hyundai Verna7.Hyundai i20etc.

APPLICATION IN INDIAN BIKES

1.Suzuki Hayabusa

2.Bajaj RS200

3.Honda Goldwing

4.Kawasaki Ninja ZX

5.Harley Davidson Iron883

Etc.

Thank you