Patent ID: 6688276
Filing Date: 2004-02-10
Classification: F01C,F02B

Abstract:
A rotary internal combustion engine, comprising a cylindrical rotor having pistons therein, the rotor being located in the interior of a stator, the stator being limited externally by two flat side surfaces and a curved peripheral surface, there being formed in the peripheral surface of the stator one first chamber to provide an admission phase and a compression phase and a second chamber to provide an expansion phase and an exhaust phase, wherein:the peripheral surfaces of said chambers are circular and end with surfaces having a different radius of curvature, being smaller than the radius of curvature of the contiguous surfaces of the admission phase and the expansion phase; the chambers being separated by first and second separation sections, in which the peripheral interior surface of the stator is matched to the peripheral surface of the rotor, whereby the length of the separation sections corresponds to the peripheral gap between two consecutive pistons; the rotor pistons, preferably four, are each inserted in a corresponding rotor chamber so that the rotor piston can pivot alternately in the direction of the stator chambers; each piston being formed by a first part, a piston body, which turns in the direction of the interior peripheral surface of the stator and which has a side face which slides along the interior peripheral surface; and a second part, a piston base, connected radially with the first part at one extremity, and having the other extremity supported in a longitudinal slot of a circular support bolt; rotor chambers are formed in the rotor interior on each side of the corresponding piston base so that the rotor chambers vary in volume due to the alternate movement of the piston base and thus pump air for cooling the engine interior; and air from the supply channel of the engine being used for cooling of the engine interior and the same air then being returned to the supply channel for use in the engine after being heated during said engine cooling, there being appropriate passages which connect the rotor chambers to the supply channel through first and second junctions.