The rotary engine is very powerful for its size. It uses a rotor instead of pistons. It is an internal combustion engine so it uses the five events: Intake, Compression, Ignition, Power , Exhaust.
The rotor is attached to an eccentric shaft. During combustion, a gear in the rotor makes the rotor walk around a stationary gear. This combines with the eccentric shaft to give the rotor planetary motion.
Inlet and exhaust ports are covered and uncovered by the lobes of the turning rotor. As the rotor turns, the working chamber changes size. After intake, it becomes smaller, and compresses the air-fuel mixture.
The eccentric shaft does one revolution for each power phase. That means three revolutions for each rotor rotation. So the eccentric shaft turns at three times the speed of the rotor.
The Renesis engine is a further development of the "Wankel" rotary engine. The operating cycle is the same as the conventional rotary engine, with improvements to it's design which has the result of improving fuel economy when under load.
