Patent ID: 6279519
Filing Date: 2001-08-28
Classification: F02B

Abstract:
An internal combustion engine comprising;a crankcase having front and back ends, top, bottom, left and right sides;a crankshaft having a longitudinal axis, the crankshaft mounted in the crankcase between the front and back ends of the crankcase;a row of left cylinders mounted on the left side of the crankcase along a line parallel to the longitudinal axis of the crankcase;a row of right cylinders mounted on the right side of the crankcase along a line parallel to the longitudinal axis of the crankcase;each left cylinder having one generally opposed right cylinder;each cylinder having an inner end against the crankcase, an outer end, and an axis;each cylinder being substantially a simple solid of rotation with air cooling fins;a row of left cylinder heads, each head covering the outer ends of two adjacent left cylinders;a row of right cylinder heads, each head covering the outer ends of two adjacent right cylinders;each of the left cylinder head generally opposed to one of the right cylinder heads;each cylinder head connected to the generally opposed cylinder head by at least one tension bolt spanning between them above the crankcase, and at least one tension bolt spanning between them below the crankcase;each cylinder head having at least one liquid cooling channel;the cooling channel of adjacent cylinder heads in each row of cylinder heads inter-connected by tubes;a piston slidably mounted in each cylinder;the crankshaft having a crank for each piston;each piston connected to the respective crank by a connecting rod;an ignition system providing at least one electrical spark in each cylinder at specific repeating timing intervals;each cylinder having simultaneous spark timing with the generally opposed cylinder.