Abstract: An oil cooled rotary engine comprising a centrally mounted timing gear arrangement. A stationary gear is mounted on a stationary shaft positioned concentrically with the output shaft of the engine. A rotary engine comprising a coaxially positioned expander unit.
Abstract: Cooling systems for rotary internal combustion engines. Air through-rotor cooling is provided by a closed-loop cooling system with an output shaft-driven fan. Liquid cooling is provided utilizing a cooling chamber within the output shaft.