Non Pneumatic Tyres

AIRLESS TYRES

Presenter:Anindya SinghAuto extremists

INTRODUCTION• Tyre is a rubber member which gives the cushion to the

automobile. It consists of outer cover i.e. tyre proper and tube inside.

• The tyre-tube assembly is mounted over the wheel rim and air inside the tube carries entire load and provides cushion.

FUNCTIONS• To support the vehicle load.

• To provide cushion against the shocks.

• To transmit driving and braking forces to the road.

• To provide grip for smooth steering.

TYPES OF TYRES

1. Tubed tyre

2. Tubeless tyres

NON PNEUMATIC TYRES

WHAT IS AIRLESS TYRES?• Airless Tyres or Non Pneumatic Tyres (NTP) are the

tyres which are not supported by air pressure.

Tread

Flexible Spokes

HOW IT WORKS?

The Flexible treads and the shear band deforms temporarily as the spokes bend, then quickly go back to the initial shape.

DESIGN APPROACH

NASA’s Apollo Lunar Rover

Bridgestone Air-Free Tyre Concept

DESIGN APPROACH

Michelin Tweel

Resilient Technologies

DESIGN APPROACH

Hankook I-Flex Tyres

ADVANTAGES

• No air leaks or tyre blow outs.

• Consistent economy and handling.

• No maintenance needed.

• Lengthened tread life.

• Facilitate recycling.

• Less environmental impact.

• Can take gunfire or explosion.

• Tread incorporated with water evacuation holes significantly reduce hydroplaning.

DISADVANTAGES

• Lack of adjustability

• Not as economic as pneumatic tires

• Vibrations

CONCLUSION

• The wheel is probably the most important mechanical invention of all time. The wheel has been continuously driving our civilization like a catalyst in a chemical reaction.

• This new technology will increase the safety of cars as well as have a positive impact environmentally.

THANK YOU!

Anindya Singh