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Please Pay Attentions
 Research studies show that under-inflated tires are a major issue today.
In the USA
 27% of passenger cars and 32% of light trucks have at least one tire
under pressured by more than 25%. This results in 1.24 billion gallons
of wasted fuel per year (costing 3.7 billion USD).
In the EU
 38% of cars in the EU drive on under-inflated tires. This results in 5.3
billon liters of wasted fuel worth of 7 billion EUR, and an extra 12.3
million tons of CO2 released into the atmosphere.
 So, we can say that we require a system is easy and inexpensive to
produce would bring enormous savings in fuel, pollution, and
human lives when implemented on a large scale.
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Some Other Statistics
 A statistics show that tires which are under inflated by as
little as 2 psi reduce fuel efficiency by 10 percent.
 Over a year of driving, that can amount to several hundred
dollars in extra fuel purchases.
 One of reason for Road Accident is less or Insufficient
Tire Pressure.
 Near about
10,000
injuries could be prevented per year
if all vehicles were equipped with tire pressure monitoring
systems.
 GM offered these in CUCV(Commercial Utility Cargo
Vehicle) Blazers and pickups used by U.S. military.
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Different Tire Conditions And Effect On
Different Tire Pressure
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SELF-INFLATING SYSTEMS
Tire-inflation systems have three general goals:
 Detect when the air pressure in a particular tire has
dropped
 Notify the driver of the problem
 Inflate that tire back to the proper level
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PARTS OF SELF-INFLATING SYSTEM
 Tire deflation valves
 Tire inflator hoses
 To operate tire deflation
valve this is screwed onto
the existing tire valve. It
inflates the tire to a
required pressure.
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CTIS: INSIDE
 Wheel Valve
 ECU
 Pneumatic Control Unit
 Control Panel
 Speed Sensor
 Pressure Switch
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TIRE MAINTENANCE SYSTEM (TMS)
 Similar to CTIS
 It notifies the driver via
warning light(visible in
rear mirror).
 After every 10 min. or
time period specified
system check the tire
pressure.
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AIRGO SYSTEM
1. When a tire loses pressure, due to a
puncture or other seepage, a series of
check valves automatically detects it.
2. The System then immediately draws
air from the vehicle’s pneumatic
system and directs it to each tire
requiring air.
3. The air pressure is delivered via the
trailer’s hollow axle housing.
4. The air then goes through the hub
assembly and into the tires. It is
completely isolated from the brake
system
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Wheel-End Assembly
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Why YOU & ME go for SIT
 SAFETY
 FUEL ECONOMY
 TIRE LONGEVITY
 ENVIRONMENTAL FRIENDLINESS
 CONVENIENCE
 LOW VARIABLE COSTS
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Achievements
SIT – The Self Inflating
Tire won the prestigious
Tire Technology of the
Year
award at the
Tire Technology Awards for
Innovation and Excellence
2009
which were presented at the
Tire Technology Expo
In
Hamburg, Germany
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Conclusion
 Increases safety, comfort and fuel efficiency
 Flexibility for drivers
 Future tires
 Better option to reduce road accidents
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Thank y o u
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