Patent ID: 8833339
Filing Date: 2014-09-16
Classification: F01B,F02B,F16F

Abstract:
1. A reciprocating piston engine, comprising: four cylinders, each cylinder having a circular cross section and a cylinder axis; and an output shaft having a shaft axis; wherein each cylinder is coupled to the output shaft via a separate rotating crankshaft and a toothing so that force and torque from each cylinder is transmittable to the output shaft thereby; wherein the four cylinders are disposed so as to define the corners of a square and oriented so that each cylinder axis is parallel to an axis orthogonal to the plane of the defined square; each cylinder has an axial orientation that matches the axial orientation of its diagonally opposed cylinder and opposes the axial orientation of the two adjacent cylinders; and the output shaft is disposed at the center of the defined square with the shaft axis oriented parallel to the cylinder axes.