1. The document discusses compressed air vehicles, which use compressed air instead of gasoline to power an air engine and pistons. 2. Some advantages are that compressed air vehicles produce no emissions, are cheaper to produce and maintain than gasoline vehicles, and compressed air is cheaper and more abundant than gasoline. 3. However, compressed air vehicles also have limitations like a shorter driving range than gasoline vehicles and slower refueling times than gasoline vehicles.

1. COMPRESSED AIR VEHICLE:
VIEW & WHY NOT SO IN USE
Under Guidance Of:
Mr. Bhupesh Kumar
Dept. of Mechanical Engg.
Submitted By:
Sachin Garg
Mechanical 4th
year
116248
SEMINAR:
MEH801

2. References
1.Haisheng Chen et al. “Air fuelled zero emission road transportation: A
comparative study”, Applied Energy 88 (2011), 24 June 2010, pp: 337–342
2. Amir Fazeli et al. “A novel compression strategy for air hybrid engines”
Applied Energy 88 (2011), 8 March 2011, pp: 2955–2966
3. Ulf Bossel “Thermodynamic Analysis of Compressed Air Vehicle Propulsion”
European Fuel Cell Forum,Morgenacherstrasse 2F CH-5452
Oberrohrdorf/Switzerland, April 2, 2009
4.MDIEnterprisesS.A(http://www.mdi.lu/eng/afficheeng.php?
page=minicats).Mdi.luRetrieved 2010-12-12.
5.www.theaircar.com
6.www. zeropollution.com
7.www.howstuffwork.com
8.www.thehindubusinessline.com
9.thefraserdomain.typepad.com

3. Outline
 INTRODUCTION
 PROBLEM WITH GASOLINE
COMPRESSED AIR VECHICLECOMPRESSED AIR VECHICLE
 BASIC PRINCIPLEBASIC PRINCIPLE
 WORKING
 ADVANTAGES
 LIMITATIONS
CONCLUSION

4. INTRODUCTION
 Our world is facing fuel crisis, air pollution.
 All kind of conventional source of fuel are on verge
of exhaustion.
 Gasoline is the primary source of fuel.
 Gasoline is becoming more and more expensive and
impractical.

5. Non Renewable
Expensive Polluted
Problem With GASOLINE

6. Alternative energies
 Air Energy
Solar Energy
 Electric Energy

7. COMPRESSED-AIR VEHICLE:
 A compressed-air vehicle is powered by an air engine,
using compressed air, which is stored in a tank.
 Instead of mixing fuel with air and burning it in the
engine to drive pistons with hot expanding gases.
 Compressed air vehicles (CAV) use the expansion of
compressed air to drive their pistons.
 One manufacturer claims to have designed an engine
that is 90 percent efficient.

8. BASIC PRINCIPLE:
 First of all inflate a balloon
 Then the elastic skin of balloon is hold the air very
tightly from inside, but at the same time when use to
create a hole through pin into it.
 Then the air expands in the outward direction with so
much energy that the balloon explodes
 Compressing the gas into a small space is a way to
store energy
 If again the gas expands ,that’s mean energy is
released to do work
 That’s the basic principle behind it to makes the
engine go.

9. WORKING:
Normally in off condition Solenoid valve air inlet hole are B and D and outlet hole
are E and C.

10. CONT…
In ON condition Solenoid valve air inlet hole are B and E and outlet hole
are Dand A.

11. CONT…
We weld two crankshafts and connect pneumatic cylinder with them and fix
them on body frame with the help of bearing

12. POWER TRANSMISSION:

13. Cont…

14. ADVANTAGES FROM RESEARCH
PAPERS:
 Bharat Raj Singh1
and JP Yadav2
(2011) in their endeavour
have evaluated the performance of compressed air engines.
 Their preliminary analysis based on the prototype
calculation shows that around 3 cubic metre of air at a
pressure more than 30bar can give a mileage equivalent to
one litre petrol i.e. Rs 64
 Cost of production of one cubic metre of air at a pressure of
50bar is Rs 3.
 Hence air of Rs 9 can give the mileage of Rs 64 of petrol.
 1 Bharat Raj Singh, Associate Director, SMS Institute of Technology, Lucknow
 2 JP Yadav, Associate Professor, Chandra Shekhar Azad University of Agriculture & Technology

15. INFORMATION FROM OTHER
RESEARCH PAPERS :
Technical benefits:
 The temperature of the engine while working will be
slightly less than the ambient temperature.
 Smooth working of the engine due to very less wear and
tear of the components.
 There is no possibility of knocking.
 No need of cooling systems and spark plugs or Complex
fuel injection systems

16. CONT…
 Air, on its own, is non-flammable, abundant economical,
transportable, storable and, most importantly, nonpolluting.
 Compressed air technology reduces the cost of vehicle
production by about 20%, because there is no need to build a
cooling system, fuel tank, spark plugs or silencers.
 The mechanical design of the engine is simple and robust.
 Low manufacture and maintenance costs as well as easy
maintenance.
 Lighter vehicles would mean less abuse on roads, thus,
resulting in longer lasting roads.
 The price of fueling air powered vehicles will be significantly
cheaper than current fuels.

18. LIMITATIONS FROM RESEARCH
PAPERS:
 A 2005 study demonstrated that cars running on
lithium-ion batteries outperform both compressed air
and fuel cell vehicles more than three-fold at same
speeds.
 MDI has recently claimed that an air car will be able
to travel 140km in urban driving, and have a range of
80 km with a top speed of 110km/h on highways.

19. CONT…
 Less power output
 Probability of air leakage.
 Less air station are available.
 Biggest disadvantage is the energy needed to
compress the air is greater than the energy stored
 Within the vehicle, expansion and consequent
pressure reduction in the throttle or engine chills the
air, reducing its effective pressure. Addition of
ambient heat will increase this pressure and this
addition leads to a more complex propulsion system.
 Passenger compartment heating is more difficult
since the propulsion system does not provide a
source of waste heat. Some form of heat pump, or
more likely, an electric heater would be required.

20. CONT…
 Refueling the compressed air container using a home
or low-end conventional air compressor may take as
long as 4 hours though the specialized equipment at
service stations may fill the tanks in only 3 minutes.
 Tanks get very hot when filled rapidly. Tanks are
sometimes immersed in water to cool them down
when they are being filled. That would not be possible
with tanks in a car and thus it would either take a long
time to fill the tanks, or they would have to take less
than a full charge, since heat drives up the pressure.

21. CONCLUSION:
 It’s important to remember that while vehicles
running on only compressed air might seem like a
distant dream, but they still have public interest due
to their environmental friendly nature.
 Efforts should be to make them light, safe, cost
effective and economical for deriving.
 Electric-powered cars and bikes already available on
the market put a strong competition to compressed
air car not only in terms of cost but also their
environment friendly role.
 The technology still looks distant but that has not
deterred inventors from working on it.