A rotating combustion machine comprising: - a stator in which an inner combustion chamber is defined, having an annular or substantially toroidal profile and presenting at least one suction port for introducing an operating fluid into said inner chamber and at least one discharge port for exiting said operating fluid from said inner chamber; - a plurality of orbiting pistons, connected with one or more rotors (7a, 7b) coaxial to said inner chamber and made sliding in rotation in said inner chamber in such a way that a variable pair of adjacent orbiting pistons dynamically and consecutively divides said inner chamber into a suction sector of said operating fluid, a compression sector of said operating fluid, an expansion sector of the burnt gases and a discharge sector of said burnt gases; - ignition means of the combustion of said operating fluid, interposed between said compression sector and said expansion sector of said inner combustion chamber; - mechanical transmission means, connected with said rotors (7a, 7b) and with a primary shaft to which they transmit the motion, suitable to be placed by said operating fluid in rotation around a linear axis, in such a way that said orbiting pistons slide in rotation inside said inner chamber, one following the other, simultaneously with the rotation of said mechanical transmission means and of said rotors (7a, 7b) around said linear axis, characterized in that it comprises an injection circuit, cooperating with said stator in such a way as to convey inside said expansion sector of said inner combustion chamber a cooling fluid in atomized or powder form, contained in a service tank belonging to said injection circuit, once said combustion of said operating fluid by said ignition means has been occurred and during said rotation of said mechanical transmission means and of said rotors (7a, 7b) around said linear axis. - a stator in which an inner combustion chamber is defined, having an annular or substantially toroidal profile and presenting at least one suction port for introducing an operating fluid into said inner chamber and at least one discharge port for exiting said operating fluid from said inner chamber; - a plurality of orbiting pistons, connected with one or more rotors (7a, 7b) coaxial to said inner chamber and made sliding in rotation in said inner chamber in such a way that a variable pair of adjacent orbiting pistons dynamically and consecutively divides said inner chamber into a suction sector of said operating fluid, a compression sector of said operating fluid, an expansion sector of the burnt gases and a discharge sector of said burnt gases; - ignition means of the combustion of said operating fluid, interposed between said compression sector and said expansion sector of said inner combustion chamber; - mechanical transmission means, connected with said rotors (7a, 7b) and with a primary shaft to which they transmit the motion, suitable to be placed by said operating fluid in rotation around a linear axis, in such a way that said orbiting pistons slide in rotation inside said inner chamber, one following the other, simultaneously with the rotation of said mechanical transmission means and of said rotors (7a, 7b) around said linear axis,