To simplify the structure to reduce weight, and to improve fuel consumption efficiency by reducing discharge of carbon dioxide with reduction of the fuel.

The high pressure compressed air is continuously generated by high speed rotary vanes (a multi-stage compressor), and fed to a cylinder. In the cylinder, the fuel is continuously injected into the compressed air for ignition, and the compressed air is discharged through a nozzle to rotate a turbine. Shafts of the turbine and the high speed rotary vane are directly connected to each other, and engine speed at 10,000 rpm-15,000 rpm can be obtained. As the driving power, engine speed is reduced to 2,000 rpm at 1/5-1/7 of the beginning to obtain the high-power.