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ANTI–LOCK BRAKING SYSTEM PRESENTED BY- MADHULIKA SHARMA MONISHA SINGH B.TECH 3 RD YEAR MECHANICAL ENGG. B.TECH 3 RD YEAR MECHANICAL ENGG.

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ANTI–LOCK BRAKING SYSTEM

PRESENTED BY-

MADHULIKA SHARMA MONISHA SINGHB.TECH 3RD YEAR MECHANICAL ENGG. B.TECH 3RD YEAR MECHANICAL ENGG.

CONTENTS

1.Introduction2.What is Anti-Lock Brake System….???3.Operation Principle4.Schematic Diagram Of ABS5.Components Of ABS6.Working Of ABS7.Advantages8.Disadvantages9.Conclusions10.Bibliograpy

INTRODUCTIONIn recent years, with advancement in design & technology, disc brakes are fast replacing drum brakes.

ABS was firstly developed for aircrafts but now it is used in cars and trucks to prevent wheels from slipping and skidding.

WHAT IS ANTI-LOCK BRAKE 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 during braking, preventing the wheels from locking up and avoiding uncontrolled skidding.

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.

COMPONENTS OF ABS

Speed sensor Valve Controller Pumps

SPEED SENSORS

The anti-lock braking system needs some way of knowing when a wheel is about to lock up. The speed sensors, which are located at each wheel, or in some cases in the differential, provide this information.

VALVE

There is pair of valves having following functions:-

1. Increasing pressure2. Holding pressure steady 3. Decreasing pressure

PUMPS

When the ABS system operates the brake Lines lose pressure. The pump re-pressurizes the system.

CONTROLLER

The controller is an ECU type unit in the car which receives information from each individual wheel speed sensor, in turn if a wheel loses traction the signal is sent to the controller, the controller will then limit the brake force (EBD) and activate the ABS modulator which actuates the braking valves on and off.

SCHEMATIC DIAGRAM OF ABS

WORKING OF ABS

ADVANTAGES

Stopping on ice. Lower insurance costs. Higher resale value. Traction control.

DISADVANTAGES

Inconsistent stop times. Expense. Delicate systems.

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.

CONCLUSION

BIBLIOGRAPHY

1. The journals of Society of Automotive Engineers India (SAE India).2. Theory of Machines by R.S.Kurmi.

THANK YOU…..!!!!!

QUERIES…..????

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