The paddles and the valve wheel are placed in a housing to create combustion chambers. The rotating back plate provides one "stationary" wall to a combustion chamber even though it is rotating at a 90 degree offset. The vane provides another wall of the combustion chamber that is used both to capture the energy of expanding hot gasses, and to exhaust the combustion products of the previous cycle. These items are shown in figure three along with the placement of the intake valve, fuel injector, spark plug, and exhaust port.

The engine would be controlled by a micro controller, and would require various sensors, which are not shown. The micro controller would need to know the position and speed of the valve wheel, and whether the intake valve was open or closed. It would also be helpful to be able to measure the pressure inside the cylinder, or perhaps to be able to measure the noise, if any, caused by the release of the hot gasses from the exhaust port. The controller would control the fuel injector and the spark plug.