Patent ID: 6732697
Filing Date: 2004-05-11
Classification: F16F,Y10T

Abstract:
A reciprocating internal combustion engine, comprising:a cylinder block; a crankshaft housed within said cylinder block, with said crankshaft being journaled to said cylinder block by a plurality of main bearings, and with said crankshaft having a first end and a second end and integral cheeks; and a plurality of reciprocating balancers, with one of said balancers being attached to said cylinder block at the locations of said first and second ends of said crankshaft, and with each of said balancers comprising: a plurality of cam lobes formed on said cheeks of said crankshaft; a reciprocating balancing mass resiliently mounted to said cylinder block below one of said main bearings; a plurality of cam followers in operative contact with said balancing mass and with said plurality of cam lobes, such that said balancing mass will be caused to reciprocate in response to the rotation of said crankshaft and cam lobes.