Patent ID: 6591791
Filing Date: 2003-07-15
Classification: F01B,F02B

Abstract:
A spark ignition rotary internal combustion engine, comprising:a) a fixed stator having a first port for discharge of burnt products, a second port for aspiration of an air-fuel mixture and a seat for a spark plug; b) a fixed axial shaft fixedly supported by lateral flanges of said stator; c) a rotor rotatably supported on said fixed axial shaft for coaxial rotation within said stator, said rotor having the shape of a spherical sector and having equally angularly spaced cylinders radially disposed along the circumference thereof; d) a piston associated with each of said cylinders in said rotor adapted for reciprocating rectilinear movement in the respective cylinder; e) an eccentric body having a circular profile fixedly arranged on said axial shaft at a median position thereof and having an axis offset and parallel to said axial shaft, the circular profile of said eccentric body having a bearing surface thereon; and f) a connecting rod associated with each piston having its small end connected to a pin of the respective piston and its big end slideably coupled to the bearing surface of the circular profile of said eccentric body so that as said connecting rod follows through 360Â° of the circular profile of said eccentric body reciprocating movement is imparted to the respective piston within the respective cylinder, thus continuously varying the volume of the combustion chamber within the cylinder.