The Cyclone engine utilizes a external combustion where the fuel is burned in a controlled environment, similar to home heating furnaces or electric power plants. As in the Cyclone Engine, the fuel and preheated air are centrifugally spun in a circle around the engine. The heavier, unburned particles are thrown to the outside, while the lighter, cleaner gases escape through a central tube-bundle to the exhaust.

The internal lubricant in the Cyclone engine is the same as the working fluid, which is deionized water. This is accomplished by using non-corrosive materials and high temperature composite bearings – both only recently available. Oil changes are not necessary. Only water may be added.

The Cyclone Engine using the innovative external combustion technology and because it does not need oil lubrication to operate, is an overall environmentally cleaner engine to run.