Blue-Print of Compressed Air Vehical (CAV):-

The above figure is a basic layout of Our CAV. 

VQA compressed-air vehicle (CAV) 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 use the expansion of compressed air to drive their pistons. One manufacturer claims to have designed an engine that is 90 percent efficient. 
Compressed-air propulsion may also be incorporated in hybrid systems, such as with battery electric propulsion. This kind of system is called a hybrid-pneumatic electric propulsion. Additionally, regenerative braking can also be used in conjunction with this system.
Technology 
Engine 
Typical compressed air engines use one or more expander pistons or rotary expanders. It is necessary to heat the air or the engine during expansion. For example, the Mekarski system heated compressed air with steam.
Tanks 
The tanks must be designed to safety standards appropriate for a pressure vessel, such as ISO 11439. 
The storage tank may be made of metal or composite materials. The fiber materials are considerably lighter than metals but generally more expensive. Metal tanks can withstand a large number of pressure cycles, but must be checked for corrosion periodically.
One company stores air in tanks at 4,500 pounds per square inch (about 30 MPa) and hold nearly 3,200 cubic feet (around 90 cubic metres) of air. 
The tanks may be refilled at a service station equipped with heat exchangers, or in a few hours at home or in parking lots, plugging the car into the electrical grid via an on-board compressor. The cost of driving such a car is typically projected to be around €0.75 per 100 km, with a complete refill at the "tank-station" at about US$3.[citation needed]
Compressed air 
Compressed air has a low energy density. In 300 bar containers, about 0.1 MJ/L and 0.1 MJ/kg is achievable, comparable to the values of electrochemical lead-acid batteries. While batteries can somewhat maintain their voltage throughout their discharge and chemical fuel tanks provide the same power densities from the first to the last litre, the pressure of compressed air tanks falls as air is drawn off. A consumer-automobile of conventional size and shape typically consumes 0.3-0.5 kWh (1.1-1.8 MJ) at the drive shaftper mile of use, though unconventional sizes may perform with significantly less.
Emission output 
Like other non-combustion energy storage technologies, an air vehicle displaces the emission source from the vehicle's tail pipe to the central electrical generating plant. Where low emissions sources are available, net production of pollutants can be reduced. Emission control measures at a central generating plant may be more effective and less costly than treating the emissions of widely dispersed vehicles.
Since the compressed air is filtered to protect the compressor machinery, the air discharged has less suspended dust in it, though there may be carry-over of lubricants used in the engine.

Advantages and Disadvantages of Compressed air vehicals:-

Compressed Air Car Advantages

* With top speeds around 65 mph and a range of over 100 miles,compressed air cars offer higher efficiency       than most electric cars. 

* Its only emissions are cold air. 

* Some compressed air car models currently available in very limited quantities are very inexpensive (under $15,000) 

* No additional infrastructure is necessary to support compressed air cars. 

*The simplistic mechanical designs of the compressed air car are easy to understand, and won’t be susceptible to the kinds of damage brought on by battery use and combustion 


Compressed Air Car Disadvantages

* The pump needed to compress the air requires electrical energywhich is currently produced using mostly fossil fuels. 

CAV PART List:-

1.     4- stroke SI Engine (minimum 110 CC)
2.   Air tank (100 or 200 liters capacity)
3.  Pressure gauge – 2 No’s
4. Safety valve – 1 No’s
5.    Cables tubes – 1 mtr
6.     Roller chain and  sprocket- 1 No
7. Rack and pinon steering mechanism
8.     Wheels – 4 no’s
9.      Shaft Ø6mm- 3 mtr
10.   Seat – 1 No
11.  Chassis frame material (steel rods)- 10 mtrs
12. . Paint 
13. . Stickering 
14.   Pedal and levers
15. Greases and bearings
16. . Nuts and bolts
17.  Tool box (small)
18. Miscellaneous parts

Planning and procedure to fabricate CAV:-

Batch- I      

1.    design of chassis
2.      cut raw material and fabricating chassis frame as per design.
3.     Paint chassis.
4.      Fastening Nuts and bolts
5.      Greasing

Batch- II

1.     Study and fix valves and gauges to Compressed air tank.

2.     Study and Modify to 4- stroke SI Engine.

3.     Connect cables and regulate pressure for Modified Air engine to make it work.

Batch – III

1.      Study rack and pinion steering Mechanism.
2.     Fix steering Mechanism to front axle.
3.      Arrange wheels to Both axles.
4.      Fix leaf springs to rear axle with U-clamps.
5.      Arrange Breaks to rear axle to pedal.