This document summarizes a student project presentation on a compressed air vehicle. It introduces compressed air technology as a renewable energy solution for vehicles that avoids environmental problems from fossil fuel use. It then describes how compressed air vehicles work by storing compressed air in tanks and using staged decompression to power motors and generate electricity. Finally, it discusses advantages like lower emissions and costs compared to gasoline or electric vehicles, as well as challenges like limited driving range due to air storage capacity.

1. Swaminarayan College of Engineering And
Technology
Submitted By ,
Name En.No.
Desai Meet K. 181153102009
Nagori Vahidkhan J. 181153102027
Patel Prakash M. 181153102046
Raval Yash J. 181153102060
Team Id: 95569
Project Presentation On
" COMPRESSED AIR VEHICLE "
B.E , Sem - 7
Automobile Engineering

2. INTRODUCTION
 Nowadays, automobiles consume a large number of fossil fuels.
 However, the consumption of fossil fuels has brought many serious environmental
problems, such as global warming, ozone layer depletion and fine particulate
matter.
 To avoid such environmental problems, renewable energy has been applied to
automobiles.
 A compressed air engine of a renewable energy vehicle is introduced
 In order to comply with the increasingly stringent standards in the field of
emissions from road traffic, the automobile industry as well as other firms and
research nstitutions have increasingly placed emphasis on the development of zero
emission vehicles
 i.e. Compressed Air Technology (CAT) .

3. COMPRESSED AIR TECHNOLOGY (CAT)
 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.
 Compressed Air Technology (C.A.T.) uses compressed air as its energy
 source and requires no gasoline or batteries to drive the engine. C.A.T. is developed by Mr. Guy Negre
to run engines with compressed air. Although the technology is new, the idea isn't completely unknown
to Formula One Cars & those interested in engine technology.
 In fact, every Formula One engine starts with a shot of compressed-air as an Energy-Booster.
 Guy Negre has simply extended its potential by turning it into a single source of energy for running the
engine.

4. WORKING OF C.A.T. ENGINES
 In principle the technology is very similar to the internal combustion system in that compressed
air is used to drive a piston in a barrel. The secret of the engine lies in the way it efficiently
converts the energy stored in the tanks of compressed air.
 By way of explanation, it has long been known that to compress air to high pressures a staged
process should be used, compressing air to first 50 bars, then to 150 bars then three hundred and
so on. This technique, commonly employed by the air and gas liquefaction industries, uses a
fraction of the energy used to compress the gas in one operation. The secret of the compressed
air motor is simply to reverse the process - decompress the air in stages and in so doing
efficiently release energy at each point in the chain.

5. HOW COMPRESSED AIR CAN FUELA CAR
In practical terms compressed air at 300 bars is stored in
the carbon fiber tanks A. Air is released through the main
line firstly to an alternator B where the first stage of
decompression takes place. The now cold air passes
through a heat exchanger C which adds thermal energy to
the air and provides a convenient opportunity for air
conditioning D.
The warmed compressed air now passes to the motor E.
where a two more stages of decompression and re-heating
take place. The motor drives the rear axle G through the
transmission F. Control of engine speed is through a
conventional accelerator pedal H controlling a valve
within the motor.

6. COMPARISON WITH ELECTRICAL VEHICLE’S

7. ADVANTAGES
 compressed air to store the energy instead of batteries. Their potential advantages over other vehicles
 Reducing pollution from one source, as opposed to the millions of vehicles on the road.
 Compressed air technology reduces the cost of vehicle production.
 There is no need to build a cooling system, fuel tank, Ignition Systems or silencers.
 The mechanical design of the engine is simple and robust.
 Low manufacture and maintenance costs as well as easy maintenance.
 Compressed-air tanks can be disposed of or recycled with less pollution than batteries
 Lighter vehicles would mean less abuse on roads resulting in longer lasting roads.
 The price of fueling air powered vehicles will be significantly cheaper than current fuels.
 Refueling can be done at home using an air compressor

8. DISADVANTAGES
 Like the modern car and most household appliances, the principal disadvantage is the indirect use
of energy.
 The temperature difference between the incoming air and the working gas is smaller. In heating
the stored air, the device gets very cold and may ice up in cool, moist climates.
 Refueling the compressed air container using a home or low-end conventional air compressor may
take as long time..
 Tanks get very hot when filled rapidly. It very dangers it some time bloused.
 Only limited storage capacity of the tanks. So we not take drive on long time.

9. FUTURE SCOPE
 Tata Motors has signed an agreement with Motor Development International of France to develop
a car that runs on compressed air, thus making it very economical to run and be almost totally
pollution free.
 Although there is no official word on when the car will be commercially manufactured for India,
reports say that it will be sooner.
 The car could cost around Rs 350,000 in India and would have a range of around 300 km between
refuels. The cost of a refill would be about Rs 90.

10. REFILLING METHODS FOR AIR CARS
 Tanks are refilled by plugging the
car into a mains socket to feed the
motor-alternator which compresses
the air with the motor-compressor.
 Refilling time obviously depends on
the source of electricity used. Here
are our initial estimates
For :
 230V : 3 hrs 30mins - 4hrs
 380V : 2hrs 30mins - 3hrs.
 115V : currently being tested

11. VARIOUS MODAL OF AIR CAR

12. Conclusion
 From all the disruption made one can say that by using air car there is
reduction in air pollution. The emission benefits of introducing this zero
emission technology are obvious. Also, the aim of project is to cut cost,
create job locally. Also air car provides an answer to the shortage of fuel and
high price of fuel.
 With petrol and diesel prices going up and the price of oil subjects to
fluctuation for motorist, this becomes headache; use of air motor is only the
solution. All know that there will be shortage of gasoline (petrol, diesel), in
future, engine that runs on compressed air is only the alternative for it.

13. THANK YOU