Modular internal combustion engine

A crankshaft for an internal combustion engine having a plurality of pistons and piston connecting rods connecting the pistons, that are disposed within an engine block comprising:

• a plurality of discs joined together in a spaced parallel relationship by a plurality of crankpins;
• an end disc having an output shaft extending outwardly from an outer surface of said end disc along a central axis of said crankshaft;
• wherein each of said crankpins extends therebetween each of said discs and is operatively connected to said connecting rods;
• a plurality of bushings formed in a lower end of said engine block, wherein said discs are received within said bushings, such that said bushings provide a bearing surface for the circumference of the discs whereby said crankshaft rotates in response to a stroke of the piston.

An internal combustion engine comprising:

• a cylinder block having at least one cylinder bore;
• a cylinder liner having an inner sleeve, an outer casing surrounding said inner sleeve, wherein said cylinder liner fits within the cylinder bore;
• a shoulder portion extending radially from an upper end of said casing;
• a dome portion having a semi-circular shape extending from said shoulder portion to enclose said upper end of said liner;
• a crankshaft having a series of discs joined together in a spaced parallel relationship by a plurality of crankpins, and an end disc has an output shaft extending outwardly along a central axis, wherein said crankpins are operatively connected to piston connecting rods;
• and
• a plurality of bushings disposed at a lower end of said engine, said bushings adapted to support said crankshaft whereby the discs are received within said bushings such that the bushings provide a bearing surface for the circumference of the discs as the crankshaft rotates in response to a power stroke of the piston.