pressure which is effective to deliver a constantly increasing amount of natural air to an engine as the speed of the engine increases which is readily adaptable to a standard internal combustion engine to convert the internal combustion engine for operation with a natural air application_number US 201414222532 A description the present invention relates to an engine that runs on natural air pressure more particularly to a method and apparatus for operating a vehicle engine on natural air pressure in order to alleviate problem of pollution reference will now be made in detail to the present embodiments of the invention examples of which are illustrated in the accompanying drawings as shown in fig1 to fig6 the present invention provides an engine 10 which runs with the help of high pressure of the air due to the pressure of the air the motor starts to move and with the help of the said movement of the motor the engine gets started which itself acts as a compressor the air is mainly placed in the air tank 12 wherein about 310 pounds of air is filled in the initial stage the motor 14 starts to move and at the same time this force helps to start the engine the compressor 16 absorbs the air form the outside atmosphere and sends the required volume of air back into the tank 18 in order to fulfill the appropriate air storage and pressure in said air tank 18 in one of the embodiment of the present.