self-inflating tyres.ppt

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SELF INFLATING TYRE  SYSTEM

……tire system for future

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Introduction

 Tires lose air through normal driving (especially after hitting pot

holes) and seasonal changes in temperatures resulting in under-

inflation

Under-inflation is bad for tyres because it results in wear of tyre

threads ,affects the handling of cars and is generally unsafe.

The Self inflating tires is designed to inflate or deflate tiresautomatically.

Tires need more air while driving on hard surfaces at high speedsand less air for driving on soft surfaces such as soil or sand.

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Different Tire Conditions And Effect On

Different Tire Pressure3

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!I"#I$% &' SIT!I"#I$% &' SIT

etect whether the air pressure in a particular tyre hasdropped using suitable pressure sensors and give the input

to electronic control unit (%#U)ECU controls the pneumatic system consisting up ofcontrol valves , air source and hose-pipes

To compensate the pressure loss by inflating that tire

 bac to the proper level thereby maintaining correct air pressure

This entire process can be automated

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PARTS OF SELF-INFLATING SYSTEM

5

Regulator Valve :Regulator Valve : used to control the rate of air flow toused to control the rate of air flow tothe tiresthe tires

PRESSURE SEORS :PRESSURE SEORS :They are used to sense theThey are used to sense the

 pressure based on the deformation caused to the tires pressure based on the deformation caused to the tires

E!ECTRO"C COTRO! U"TE!ECTRO"C COTRO! U"T* It is the* It is the

microprocessor device that controls the entire systemmicroprocessor device that controls the entire system

A"R TA# A"R TA# * It supplies the re+uired amount of air at* It supplies the re+uired amount of air at

suitable pressure with the help of pressure valvesuitable pressure with the help of pressure valve

$OSE P"PES *They help in the transfer of air from the

air tan to the particular tyres

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Types &f Self Inflating Tires

SystemTIS( eritor Tire Inflation System)

#TIS (#entral Tire Inflation System)

TS (Tyre aintenance System)

6

%&eel'End Assem(ly%&eel'End Assem(l

y

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eritor Tire Inflation System

)* hen a tire loses pressure, due to a puncture or other seepage, a series ofchec valves automatically detects it.

+* The System then immediately drawsair from the vehicles pneumatic systemand directs it to each tire re+uiring air.

,* The air pressure is delivered via thetrailers hollow a/le housing.

-* The air then goes through the hubassembly and into the tires. It iscompletely isolated from the braesystem

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#TIS#TIS8

A .&eel valve is /resent .&ic& isolate t&etire from t&e system .&en it0s not in use*

An electronic control unit 1ECU23 t&e(rain of t&e system is mounted (e&indt&e /assenger seat*

An o/erator control /anel let customi4etire /ressure model*

CT"S includes a s/eed sensor /rovideinformation a(out current s/eed 5 inturn CT"S maintain t&e o/timum tire/ressure*

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TI!% 0I"T%"0"#% S1ST%TI!% 0I"T%"0"#% S1ST%

(TS)(TS)

Similar to #TIS

It notifies the driver via

warning light(visible inrear mirror).

0fter every 23 min. ortime period specifiedsystem chec the tire

 pressure.

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  !&s 4 #&"s &f SIT!&s 4 #&"s &f SIT

ADVATA6ESADVATA6ES::

S0'%T1S0'%T1

'U%$ %#&"&1'U%$ %#&"&1

TI!% $&"5%6IT1TI!% $&"5%6IT1

!I6I"5 #&'&!T"%SS!I6I"5 #&'&!T"%SS

$%SS 0I"T%"0"#%$%SS 0I"T%"0"#%

D"SADVATA6ESD"SADVATA6ES**

ore costly than the conventional tires..

7eavier than conventional tires.

The user must have the basic now how of the relation between the

 pressure and road condition.

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11APP!"CAT"OS

7ilitary Ve&iclesPassenger Ve&iclesTruc8sAm(ulances

9ire Truc8s

Increases safety, comfort and fuel economy

'le/ibility for drivers

'uture tires

8etter option to reduce road accidents

ConclusionConclusion

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12ReferencesReferences

)2 Self "nflating Tyres: "nternational ournal on A//lications

in 7ec&anical and Production Engineering Volume ): "ssue

;: 7ay +<);3 // ;'=*

+2 Automatic tyre inflation system 3 6olden Researc&

T&oug&ts>Volume , > "ssue )<>A/ril +<)-