Internal combustion engine with rotating cylinders

An internal combustion engine is described, of the type comprising at least one casing (1, 1', 1", 1"') defining within the same a chamber (2) within which a rotor assembly (3, 3', 30) is rotatably mounted, provided with at least one piston (4, 16, 17, 16, 16", 17") slidingly mounted with an alternate displacement on a plane orthogonal to a rotation axis (a-a', b-b') of the rotor assembly, said at least one piston (4, 16, 17, 16, 16", 17") being slideable in a respective cylinder integral in rotation with said rotor assembly (3, 3', 30) rotatably mounted offset with respect to the locus of the constraint points of a foot end (8) of said piston (4, 16, 17, 16, 16", 17") .