A twin-rotor piston engine with annular connecting chambers

Abstract

An effort in progress to develop a new twin-rotor piston engine is described. A proposition of sealing, which benefits from the conventional piston-cylinder structure is presented. A six-stroke twin-rotor piston engine, which is designed to have coolant intake and drain stroke is proposed. A differential velocity drive mechanism, which controls the rotors’ oscillation, is invented. The differential velocity drive mechanism utilizes novel kinematic design to completely eliminate inertial loads. The twin-rotor engine is expected to have three key technical advantages for attaining higher power density than any available piston engine: the first is symmetrical structure and well-balanced kinetics; the second is 16 or more power strokes per revolution of the output shaft and more than two symmetrical working chambers exporting power at any time; the third is performing the four-stroke cycle without using the valve mechanism.