FIELD OF INVENTION
A compressed air engine is a type of pneumatic motor which does mechanical work by expanding compressed air. Pneumatic motors 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, piston air motor, air turbine or gear type motor.
An internal combustion engine is disclosed that runs efficiently on compressed air supplied by air compressors. The preferred power plant for the instant invention air powered engine is the rotary engine. The air compressors which supply the air "fuel" to the engine chamber where the air is re-compressed to provide the force for "pushing" the rotors within the chamber which rotational movement provides the power to turn the drive shaft. These air compressors may be electrically and/or mechanically driven.
It is the primary aim of this invention to overcome the disadvantages of current bottom cycle engines discussed above and to achieve high rates of heat recovery from the top cycle, ease of integration with engines typical for distributed power generation, ease of control, long life, and economy of manufacture by implementing the several objects like- to provide a simple, compressed-air that can be attached to any existing gas turbine, spark-ignition, Diesel or similar top cycle engine that provides a source of exhaust heat.

BACKGROUND OF THE INVENTION
This invention relates generally to compressed air engines. Particularly, it relates to such an engine capable of maintaining the pressure in its supply tank at a pre-determined level for efficient and continuous operation. More particularly, one embodiment of the instant invention relates to an adaptation of the rotary engine which adaptation enhances engine efficiency for using compressed air as its force of propulsion.
Internal combustion engines for powering motor vehicles and fossil fuel burning plants used in energy producing operations throughout the industrialized nations have been under attack for many years because of their inherent characteristics which produce air and other pollutants. This is due, of course, to the nature and required volumes of the fossil fuel needed to produce the necessary power for the various uses to which the engines are put, not the inherent design of the engine itself.
One of the approaches taken in the production of a completely clean power plant is the design of an air powered engine which is, of course, completely pollution free, since there are absolutely no combustion gasses generated and released into the atmosphere. However, design in this area has been somewhat limited because of the reduced power output capable for such engines and because of their somewhat inefficient and complex operations. The air engine, therefore, has seen only limited use in some cases as an auxiliary power plant with a combustion engine as the primary power source, or more often it has been abandoned entirely in favor of other systems because of the auxiliary power needed to maintain an adequate supply of air pressure for the system.

SUMMERY
COMPRESSED AIR ENGINE
It has been discovered that an internal combustion engine runs efficiently on compressed air that is supplied by air compressors. Most standard, fossil fuel burning combustion engines can be suitably converted to be powered by air pursuant to the present invention. The rotary engine, however, is the preferred power plant for adaptation to present invention air powered engine. The air compressors which supply the air "fuel" to the engine chamber where the air is used to provide the force for "pushing" rotors within the chamber which rotational movement turns the drive shaft, which operates through a transmission to turn the drive axle to move the vehicle. These air compressors may be electrically and/or mechanically driven.
Compressed-air engine is powered by 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.
DESCRIPTION OF THE PRFERED EMBODIMENT
In figure-01,
100-1. Acceleration Control: It is to control the speed of the engine by regulating the compressed air supply.
100-2. Inlet Tube: An inlet tube provided to supply the compressed air into the engine cylinder.
100-3. Exhaust Gas: The exhaust gas is through into environment from exhaust valve.
100-4. Engine: An engine that operates on air cycle.

100-5. Wheel: A wheel is mounted on the setup as a load point.
100-6. Stand: A stand or frame is used to mount all the devices.
100-7 Non-return Valve: a non-return valve to avoid back flow of the air.
100-8. Pressure Gauge: A pressure gauge is mounted on the tank to check the pressure inside the storage tank.
100-9. Air Tank: Air tank is storage of compressed air which is performed by reciprocating compressor,
100-10. Gate Valve: Gate valve is device to open and close the supply of compressed air into engine cylinder.

What is claimed as:
1. We claim that this compressed air engine compressed air supply means is a pressurized air tank.
2. We claim that the design of claim-1, this engine block is a rotary engine.
3. We claim that the design of claim-1, is modified to gradually build up the walls at the forward to the direction of rotation end of the confined areas to alter the geometry of the internal open chamber.
4. We claim that the design of claim-1, the pressurized air tank is fitted by a reciprocating compressor mechanically driven by an electrically powered gear reduction motor.