Rotating cylinder internal combustion engine

An internal combustion reciprocating engine comprising:

• a housing;
• a cylinder rotor supported in said housing for rotation about a first axis of rotation, wherein said cylinder rotor includes at least three pairs of cylinders angularly offset relative to each other about the first axis of rotation by 120.degree., wherein cylinders of each pair are arranged on opposite sides of the first axis of rotation and have a common axis extending perpendicular to the first axis of rotation, wherein a piston is arranged in each cylinder for displacement therein, and further wherein a piston rod rigidly connects pistons of each of the pairs of cylinders;
• a crankshaft supported in said housing for rotation about a second axis of rotation wherein said crankshaft extends parallel to the first axis of rotation and is offset relative thereto by a predetermined eccentricity;
• eccentric bearings supported on said crankshaft for guiding piston rods of the pairs of cylinders, wherein said eccentric bearings defined third axes of rotation which are offset relative to each other about a second axis of rotation by 120.degree., wherein the third axes of rotation extend parallel to the second axis of rotation, and are spaced from the second axis of rotation by the predetermined eccentricity, wherein each of said eccentric bearings comprises a cam disc fixedly supported on said crankshaft and are received in a bearing opening of a respective piston rod, wherein axes of said circular cam discs define the third axes of rotation;
• wherein said housing has at least one inlet port and at least one outlet port, wherein each of said cylinders has radially outer and inner chambers, which are defined by the piston, and wherein said radially inner chamber communicates with said inlet and outlet ports during rotation of said cylinder rotor.