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US 2013/0098335 A1Published application
X-engine assembly with perfect balance
OwnerMatthew Byrne Diggsinventor
Life of this patent
Estimating the term…
Abstract
An X-Engine assembly includes four cylinder banks which are located on two intersecting planes with the crankshaft axis being on the line of the intersection of the two planes, and having a Double-Acting Scotch Yoke (DASY) power conversion system that couples the reciprocating motion of the pistons with the rotating crankshaft to provide pure sinusoidal piston motion. A series of DASY X-Engine configurations that satisfy even-firing for both 2-stroke and 4-stroke, and other engine cycles, achieve perfect balance with regard to vibrating forces and moments that are all zero, and all configurations have zero torsional vibration of the crankshaft resulting from the reciprocating masses.
Claims9
1-14. (canceled)
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 a 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 two reciprocating assemblies coupled to each crankpin of the crankshaft;
- and
- having each reciprocating assembly coupled to a crankpin on the crankshaft in such a way that, as the crankshaft rotates, the reciprocating assembly moves in reciprocating-sinusoidal-linear motion;
- 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;
- and
- having the two outward-facing pistons of each reciprocating assembly lying on a common axis which is perpendicular to the crankshaft axis,
- wherein the X-engine assembly has perfect balance for forces and moments during operation.
15 more elements
An X-Engine assembly, comprising:
- four cylinder banks arranged around a central crankshaft, the cylinder banks lying in two intersecting 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 crankshaft with four or more crankpins with all the crankpins that are associated with a pair of opposing cylinder banks being configured as one or more groups of evenly-spaced angular arrays about the crankshaft axis;
- and
- having one reciprocating assembly coupled to each crankpin of the crankshaft;
- and
- having each reciprocating assembly coupled to a crankpin on the crankshaft in such a way that, as the crankshaft rotates, the reciprocating assembly moves in reciprocating-sinusoidal-linear motion;
- 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 two outward-facing pistons of each reciprocating assembly lying on a common axis which is perpendicular to the crankshaft axis:
- and
- having a single balance shaft which is mounted in the X-engine structure on an axis parallel to the crankshaft axis and which generates a rotating couple as the single balance shaft rotates in the opposite direction and at the same angular velocity as the crankshaft,
- wherein the X-engine assembly has perfect balance for forces and moments during operation.
15 more elements
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 one or more cylinders on each cylinder bank with each cylinder bank having the same number of cylinders;
- and
- having the crankshaft with an one or more crankpins;
- and
- having two reciprocating assemblies coupled to each crankpin of the crankshaft;
- and
- having each reciprocating assembly coupled to a crankpin on the crankshaft in such a way that, as the crankshaft rotates, the reciprocating assembly moves in reciprocating-sinusoidal-linear motion;
- 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;
- and
- having the two outward-facing pistons of each reciprocating assembly lying on a common axis which is perpendicular to the crankshaft axis;
- and
- having a single balance shaft which is mounted in the X-engine structure on an axis parallel to the crankshaft axis and which generates a rotating couple as the single balance shaft rotates in the opposite direction and at the same angular velocity as the crankshaft,
- wherein the X-engine assembly has perfect balance for forces and moments during operation.
17 more elements
Dependencies are inferred from the claim text.