A non-polluting engine that produces mechanical, rotary motion, and produces oxygen as a principle gaseous byproduct. The engine employs a fuel mixture that includes two components that together produce oxygen. The fuel mixture is introduced to a combustion chamber where it is heated to facilitate the rapid production of oxygen. The expansion of the oxygen within the combustion chamber is translated to rotary mechanical energy. The oxygen produced during the reaction is expelled from the combustion chamber and released into the atmosphere.