ANTI-LOCK BRAKING SYSTEM(ABS) :

IMPLEMENTATION OF ANTI-LOCK BRAKE

SYSTEM ALONG WITH ITS ADVANTAGES AND

LIMITATIONS.

Objectives: Introduction to Anti-lock brake system. Illustration of ABS. ABS Layout. ABS Components. Steps Involved In ABS Working. Advantages And Disadvantages of

ABS.

Anti-lock Brake System: Function ABS is used as an antiskid device in a

vehicle. It used to prevent skidding of wheels while braking when we want to stop the vehicle or suddenly reduce its speed at any time.

It provides better stability and control over vehicle while braking at high speed.

It avoids locking up of wheel during braking.

Illustration of ABS:

With ABS:

Without ABS:

Illustration 2 of ABS: With ABS(Blue Path) and

Without ABS(Green and Red path)

ABS – How It Works Principle: ABS avoids locking up of

wheel by automatically changing the brake fluid pressure repeatedly.

This is done with the help of ABS hydraulic unit and sensor at each wheel.

When ABS is activated, you may experience a slight vibration or pulsation of the brake pedal. This means that ABS is working.

ABS Layouts and Components.

ABS Components:1. Wheel Speed

Sensor: The anti-lock

braking system needs some way of knowing when a wheel is about to lock up this work is done by speed sensors.

2. Hydraulic Unit: It is a central unit

which controls the flow of hydraulic fluid to each valves located near to the wheels.

This unit is to regulate the pressure for each wheel independently.

Steps involved in ABS: ABS controller detects the

wheel speed by the signals from wheel speed sensors.

After receiving signal it then sends the control command to hydraulic unit.

After receiving the control command, the hydraulic unit operates solenoid valves to alter the brake fluid pressure to each wheel.

Advantages Of ABS: It provides greater vehicle stability. Maintain directional stability in

steering during heavy/sudden braking.

Easy Fault/Failure detection by the vehicle owner.

ABS helps in shorting the stopping distance.

Disadvantages of ABS: Very Costly Maintenance of a Car equipped with

ABS is required more.

Thank You

Finish……