Patent ID: 6955153

Claim:
A method of producing power utilizing a rotary internal combustion engine having at least four rotors, including a main rotor and a compression rotor, said at least four rotors being mutually coupled and contained in a housing, comprising the steps, not necessarily performed in the sequence indicated, consisting of: a) Forming by coupled rotation of said main rotor and said compression rotor within said housing a compression chamber bounded temporarily by said main rotor, said compression rotor and said housing; b) Drawing charges of air and fuel into said compression chamber through respective air and fuel intake ports; c) Closing said intake ports; d) Compressing said charges of air and fuel by reducing the volume of said compression chamber; e) Forming by coupled rotation of said main rotor and said compression rotor a combustion chamber bounded temporarily by said main rotor and said compression rotor; f) Transferring said charges of air and fuel from said compression chamber into said combustion chamber; g) Igniting said charges of air and fuel within said combustion chamber; h) Forming by coupled rotation of said main rotor and said compression rotor an expansion chamber bounded temporarily by said main rotor, said compression rotor, and said housing; i) Expanding the ignited charge of air and fue1 into said expansion chamber; j) Opening an exhaust port in communication with said expansion chamber, and k) Expelling the combusted charge through said exhaust port by reducing the volume of said expansion chamber.