Patent ID: 6543405
Filing Date: 2003-04-08
Classification: F01B,F02F

Abstract:
A reciprocating piston internal combustion engine comprisinga cylinder bore block defining at least one cylinder bore and corresponding cylinder coolant passage each extending completely through said block between flat upper and lower surface portions adapted to be sealed to a cylinder head and a crankcase respectively, the diameter of each cylinder bore being adapted to accommodate a piston of specified diameter and the length of each said bore being adapted to accommodate a specified piston stroke; a crankcase for containing a crankshaft, a connecting rod from said crankshaft to each piston, and crankshaft bearing caps, said crankcase being adapted for location below said cylinder bore block in the operating position of said engine, said crankcase having side walls and a closed bottom for enclosing said crankshaft and an open top for assembly there-through of said crankshaft, connecting rod and bearing caps in said crankcase, the sides of said crankcase having top portions for sealing engagement with said cylinder bore block; and a mid-plate adapted for sealing engagement between said lower surface of said cylinder bore block and said top portions of said crankcase.