US 2002/0170530 A1Published application

Internal combustion engine of circular impulsion

OwnerFernando Augusto Baptista, Jaoa Manuel Pereira Dias Baptistainventors

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Abstract

The engine comprise a cylindrical rotor (B), set up in the interior of a stator (A), limited by two flat surfaces (F1) and (F2), being formed a chamber to provided the admission phase (C!) and the compression phase (C2) and another chamber to provided the expansion phase (D1) and the exhaust phase (D2). The said chambers are separated by two sections in an opposite position (H1) and (H2), in which the peripheral interior surface of the stator is adjusted to the rotor periphery and in which its extension corresponds to the gap between two pistons. In the rotor periphery, corresponding to the said gaps between two pistons, the corresponding combustion chamber (E) is inserted. The rotor preferably includes four pistons, each one formed by a first part (P1), extended in a circular way, and whose external profile slides through the internal periphery of the stator, a second part (P2), connected with the first one, extended according to a tangential direction, being supported by the extremity in the slot of a cylindrical bolt (P3); the said tangential direction allows getting a greater efficiency in the application of the impulsion forces of the piston on the rotor. In the rotor interior chambers (R1) and (R2), are formed on each side of the piston base, which pump the cool air from one first derivation of the supply channel of the engine, for the cooling of the interior of the said engine, and pump the heated air for a second channel derivation. In the engine functioning, each piston provide four functions in each rotation period of the engine.

Rotary internal combustion engine, comprising a cylindrical rotor (B) having pistons therein, the rotor being located in the interior of a stator (A), the stator being limited externally by two flat side surfaces (F1, F2) and a curved peripheral surface, there being formed in the peripheral surface of the stator one first chamber to provide an admission phase (C1) and a compression phase (C2) and a second chamber to provide an expansion phase (D1) and an exhaust phase (D2), 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 (L1) and the expansion phase (D1);
the said chambers being separated by two separation sections (H1, H2), in which the peripheral interior surface of the stator is matched to the peripheral surface of the rotor, whereby the length of the said 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 they can pivot alternately in the direction of the stator chambers;
each piston being formed by a first part, the piston body (P1), which can turn in the direction of the interior peripheral surface of the stator and which has a side face which slides along the said interior peripheral surface;
and a second part, the piston base (P2), connected radially with the first part at one extremity, and having the other extremity supported in a longitudinal slot of a circular support bolt (P3);
rotor chambers (R1, R2) are formed in the rotor interior on each side of the corresponding piston base (P2) so that they vary in volume due to the alternate movement of the said piston base and thus pump air for cooling the engine interior,
air from of the supply channel (Y) 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 said rotor chambers (R1, R2) to the said supply channel (Y) through junctions (U1, U2).

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Abstract

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