A presentation on compressed air vehicle. Its future scope and how to convert a 4-stroke S.I engine to a compressed air engine.

1. COMPRESSED AIR
ENGINE
Yash Ghanshyam Gupta.
Marathwada Mitra Mandal’s Polytechnic.
Department of Automobile engineering.

2. PROBLEMS WITH I.C ENGINE:-
• Use of gasoline results in
pollution and damage to the
environment.
• The emission of CO2 also
results in Global Warming.
• The fossil fuels are present in
limited quantity and are
depleting at a very fast pace.
• Cost of petroleum products is
increasing by leaps and
bounds.
• High maintenance cost
involved.

3. INTRODUCTION
•A compressed air engine is a type of motor which
does mechanical work by expanding compressed air.
•A compressed air engine generally convert the
compressed air energy to mechanical work through
either linear or rotary motion.
• Linear motion can come from either a diaphragm or
piston actuator, while rotary motion is supplied by
either a vane type air motor or piston air motor.
The Di Pietro motor Reciprocating compressed
air enigine.

4. Working of a C.A.E.
• It works only with two strokes that is a inkate and a
exhaust stroke.
• Stroke 1
• In the first stroke the intake valve will open and the
compressed air will make impact with the piston. As
a result the piston will go down from the top dead
center to the bottom dead center. Hence the intake
stroke will also act as power stroke as well.

5. • Stroke 2
• In the second stroke the exhaust valve is
opened and the compressed air which gave its
energy to piston in the last stroke to make it
move goes out as the pressure of the ambient
is even lower.

6. Building Compressed Air
Engine From Conventional
Engine.
• To delete the power
stroke.
• Valve timing.
• Alterations in
Camshafts.
• Change in intake
valve.

7. To delete the power stroke.
• As the engine is
supplied with the
compressed air so
compression stroke
will not be required
• because when the
compressed air will
again be
compressed the
power output would
not be sufficient.

8. Alterations in Camshafts.
• Design of a 4-stroke
S.I engine cam shaft.
• Valve timing diagram.
`

9. Modification in the cam.
• Design of a compressed
Air engine cam shaft.
• Valve timing diagram.

10. Change in intake valve.
• Intake valve doesn’t lie exactly at the center of cylinder
head but is located at one edge of cylinder head
instead, this will also cause the power loss because the
more is the energy required to move the piston by
pushing it not exactly from the center as compared to
the amount of energy required to move the piston by
pushing it from the center.

11. FROM Mr. Manish R.
Hatwar’s research paper.
• SPECIFICATIONS
• Power source
Electronically injected compressed air:
300 bar.
• Recharge
Recharge time: Less than 3 minutes at Compressed
air station.
Oil change: 0.8 liters per
50,000 Miles
• Engine
Intake and compression cylinder: 500 c.c.
Power max. HP (kW): 25(18.3) at 3000 rpm
Torque max. Kgm (NM): 6.3(61.7) at 500-2500 rpm

12. • Performance
Maximum speed: 60 mph
Acceleration times: 0-30 mph in less than
3 seconds.
Weight: 1543 lbs.
Light weight provides Good road-holding
due to low center of gravity and low
energy consumption.

13. COMPARISON WITH
ELECTRICAL VEHICLE’S
SPECIFICATION 200 nisan altra ev 2001 toyota reva C.A.V.
FUEL TYPE Electric. Electric. Compressed air.
MPG AVG 123 104 198
FUEL cost $331.00 $391.00 $212.00
TOP SPEED 75 MPH 78 MPH 60 MPH
RECHARGE TIME 5 Hours 6.3 Hours 3-4 min.
PRICE $10,000 $9,4000 $3,4000

14. CONCLUSION.
• Compressed air for vehicle propulsion is already being
explored and now air powered vehicles are being
developed as a more fuel-efficient means of
transportation. Some auto mobile companies are further
exploring compressed air hybrids and compressed fluids
to store energy for vehicles which might point the way
for the development of a cost effective air powered
vehicles design. Unfortunately there are still serious
problems to be sorted out before air powered vehicles
become a reality for common use, but there is a hope
that with the development in science and technology
,well supported by the environmental conscious
• attitude and need to replace costly transportation
methods, air-powered vehicles will definite see the light
of the day.

15. REFRENCES
• http://www.theaircar.com/
• http://auto.howstuffworks.com/air-car.htm
• http://www.planetsave.com/ViewStory.asp?ID=24
• http://www.evworld.com/databases/shownews.cfm?pageid=
news040303-06
• http://news.bbc.co.uk/1/hi/world/europe/2281011.stm
• htto://zevcat.com/
• .Studay amd development of compressed air engine- single
cylinder:a review study Mistry Manish K..., Dr. Pravin
P.Rathod, Prof . sorathiya Arvind S.
• Air Powered engine (20110) Prof.B.S. PATEL,Mr R S BAROT,
Karan Sahah.
• PC Mubashar Sharif PC Sajid Ali - NS Asad Ali Janjua
• https://en.wikipedia.org/wiki/Compressed-air_vehicle