Automatic Air Suspension System

AUTOMATIC AIR SUSPENSION SYSTEM

EAST WEST INSTITUTE OF TECHNOLOGYDEPT. OF MECH. ENGG.

Aayush Prasad (1EW09ME001)

Presented by

INTRODUCTION

ROLE OF AIR SUSPENSION SYSTEM

PRINCIPLE OF AIR SUSPENSION

COMPONENTS OF AIR SUSPENSION

TYPES OF SUSPENSION

ADVANTAGES

COMMON AIR SUSPENSION PROBLEMS

CONCLUSION

CONTENTS

Sir William Brush is the father of suspension system in automobiles.

‘The automatic air suspension system is an air-operated, microprocessor controlled suspension system. This system replaces the conventional coil spring suspension and provides automatic front and rear load leveling. The air bags, made of rubber and plastic, support the vehicle load at the front and rear wheels’.

INTRODUCTION

The main role of air suspension system are as follows:

It supports the weight of vehicle .

Provides smoother ride for the driver and passengers i.e. acts as cushion.

Protects your vehicle from damage and wear .

It also plays a critical role in maintaining self driving conditions.

It also keeps the wheels pressed firmly to the ground for traction .

It isolates the body from road shocks and vibrations which would otherwise be transferred to the passengers and load.

ROLE OF AIR SUSPENSION

When a tire hits an obstruction, there is a reaction force, The size of this reaction force depends on the un-sprung mass at each wheel assembly.

In general, the larger the ratio of sprung weight to un-sprung weight, the less the body and vehicle occupants are affected by bumps, dips, and other surface imperfections such as small bridges. A large sprung weight to un-sprung weight ratio can also impact vehicle control.

PRINCIPLE OF AIR SUSPENSION

Sprung mass :-Sprung mass (weight) refers to vehicle parts supported

on the suspension system, such as the body, frame,

engine, the internal components, passengers,

and cargo.

Un-Sprung mass :- Un-sprung mass

refers to the components

that follow the road contours, such as wheels, t ires, brake assemblies,

and any part of the steering and suspension not supported by

the springs.

DEFINITION OF SPRING & UNSPRUNG MASS

There are three fundamental components of air suspension system: .

The air supply,

Air bags,

Height control valves.

COMPONENTS OF AIR SUSPENSION

AIR SUPPLY

AIR BAGS

HEIGHT CONTROL VALVE

WORKING OF AIR SUSPENSION

The below figure shows

Horizontal/Vertical Acceleration:

TYPES OF SUSPENSION

FRONT REAR

INDEPENDENTNON

INDEPENDENTINDEPENDENT

NON

INDEPENDENT

Excellent Suspension & Comfort to passengers

Full Automatic Level Control

Good handling

Shields the vehicle from damage

Keeps the tires pressed fi rmly to ground

Easy To Service

Lifting & Lowering Function

ADVANTAGES

Air bag or air strut failure - due to old age, or moisture within the air system

that damages them from the inside.Compressor failure - Primarily due to leaking air springs or air struts

- Compressor burnout may also be caused by

moisture from within the air system coming into contact with its electronic parts.

Dryer failure - which functions to remove moisture from the air

system eventually becomes saturated and unable to perform that function

COMMON AIR SUSPENSION PROBLEMS

From the whole discussion in suspension system, I observe that suspension system is like a white blood cell .As white blood cell provides energy to our body to fight against diseases or viruses

which try to destroy or try to decrease our life ,in the similar way suspension system provides the energy to a vehicle to protect itself from damaging, increasing life of the vehicle ,increases the handling, increases comfort of passengers and many more.

So, according to me if you remove the suspension system, then you feel like in bull- cart in Audi , Mercedes types luxurious cars. The only difference is speed.

So, the scope of Suspension System is Too Bright.

CONCLUSION