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An in-line type multi-cylinder, double overhead cam, internal combustion engine having a balancer shaft arrangement that is driven directly off the crankshaft at a point intermediate of the ends of the crankshaft. To permit a more compact engine assembly, the balancer shaft also functions as an acce

An in-line type multi-cylinder, double overhead cam, internal combustion engine having a balancer shaft arrangement that is driven directly off the crankshaft at a point intermediate of the ends of the crankshaft. To permit a more compact engine assembly, the balancer shaft also functions as an accessory drive shaft for driving a number of accessories including the camshafts of the engine.

대표청구항 ▼

[ What is claimed is:] [1.] An internal combustion engine comprised of a cylinder block forming a plurality of aligned cylinder bores, a crankshaft journaled for rotation about a first axis relative to said cylinder block at one end of the said cylinder bore, a plurality of pistons each reciprocatin

[ What is claimed is:] [1.] An internal combustion engine comprised of a cylinder block forming a plurality of aligned cylinder bores, a crankshaft journaled for rotation about a first axis relative to said cylinder block at one end of the said cylinder bore, a plurality of pistons each reciprocating in a respective one of said cylinder bores and driving said crankshaft, said crankshaft having a plurality of throws each associated with a respective piston in a respective one of said cylinder bores, a balancer shaft journaled for rotation about a second axis parallel to said first axis, means for driving said balancer shaft directly from said crankshaft at a point between two of said cylinder bores and spaced inwardly from the ends of said crankshaft, said balancer shaft having an eccentric mass for balancing forces in said engine, and means on said balancer shaft for driving an engine accessory therefrom.