INTERNAL COMBUSTION PROPELLER ENGINE Russian patent published in 2004 - IPC

FIELD: mechanical engineering; rotary engines. SUBSTANCE: two propeller-like pistons are rigidly secured on hollow axle of engine with minimum clearance between them and corresponding heads. Lubricating head is secured to cylinder between piston with clearance. Shape of head follows shape of piston. Said head is provided with holes to let in and out lubricating oil, and central hole providing free movement of hollow axle. Two spring-loaded locks are fastened on end face and rear sides of lubricating head for rotation. Locks correspond to shape of pistons absolutely conjugating with pistons and lubricating head. Locks are provided with holes to let oil in out and with mechanism for initiating spring process by means of piston opposite to lock before its getting into end of stroke position. EFFECT: improved reliability owing to higher efficiency of lubrication of movable parts of engine. 3 cl, 7 dwg