Patent ID: 6382166
Filing Date: 2002-05-07
Classification: F02B,F05C,F16F,Y10T

Abstract:
A balancing system for an internal combustion engine having a crankcase housing and a cylinder bore defining a cylinder axis, the system comprising:a crankshaft substantially within the crankcase housing, wherein the cylinder bore is disposed on a first side of the crankshaft; a piston disposed in the cylinder bore for reciprocal movement generally along the cylinder axis in response to rotation of the crankshaft; a counterbalance weight disposed on a second side of the crankshaft that is generally opposite the first side, said counterbalance weight reciprocating in response to rotation of the crankshaft; and a rail interconnected with at least one of said counterbalance weight and said crankcase housing such that said rail guides said counterbalance weight during reciprocation of said counterbalance weight.