Patent ID: 8800286

Claim:
A method, comprising the steps of: rotating a rotor in a stator, said stator comprising a first substantially elliptical inner wall, said rotor offset along both an x-axis and a y-axis relative to a center of said inner wall of said stator, wherein said x-axis and said y-axis form an x/y plane perpendicular to a rotatable shaft extending through said rotor; sealing a first end of said stator using a first endplate; sealing a second end of said stator using a second endplate; spanning a distance between said rotor and said stator using a set of spaced vanes, at least one of said vanes comprising a vane tip proximate said stator, wherein a twelve o'clock position of a rotation of said rotor within said stator comprises a point of rotation of said rotor at first extension of one of said set of spaced vanes; venting an expansion chamber between said rotor and said stator through an exhaust aperture during an exhaust phase of a cycle of said rotor; using a booster element to boost exhaust through said exhaust aperture using a burst of exhaust vapor through a second aperture, said second aperture comprising a cut through at least one of: said stator, said first endplate and said second endplate, said second aperture connected via a booster line to said booster element, said exhaust aperture connected to said booster element via an exhaust line, and wherein a first pressure in said booster line exceeds a second pressure in said exhaust line.