Patent ID: 9051833
Filing Date: 2015-06-09
Classification: F01B,F02B

Abstract:
1. An X-Engine assembly, comprising: four cylinder banks arranged around a central crankshaft, the cylinder banks lying in two perpendicular planes with a crankshaft axis being on a line which is the intersection of the two planes; and having two or more cylinders on each cylinder bank with each cylinder bank having the same number of cylinders; and having the central crankshaft with two or more crankpins with the crankpins configured as one or more groups of evenly-spaced angular arrays about the crankshaft axis; and having the crankpins angularly arranged for even-firing four-stroke cycle; and having two reciprocating assemblies coupled to each crankpin of the crankshaft; and having each reciprocating assembly coupled to each crankpin on the crankshaft in such a way that, as the crankshaft rotates, the reciprocating assembly moves in reciprocating-sinusoidal-linear motion and the crankshaft generates a rotating moment; and having an outward-facing piston at both ends of each reciprocating assembly with each piston coaxially engaged with a cylinder of a cylinder bank; and having the reciprocating assemblies being offset relative to each other along the crankshaft axis; and having the four pistons of the two reciprocating assemblies that are coupled to each crankpin engaged with a cylinder of each of the four cylinder banks, wherein the rotating moment generated by the crankshaft cancels out vibration moments generated by the reciprocating assemblies, thereby resulting in the X-engine assembly having perfect balance for forces and moments during operation without the use of a balancing mechanism.