Balancing system using reciprocating counterbalance weight

摘要

A method for counterbalancing an engine which has a counterbalance weight that reciprocates in a linear manner in opposition to piston movement. The counterbalance weight (26) is preferably coupled to the crankshaft via two spaced link arms (22, 24) that engage two respective eccentrics (18, 20) of the crankshaft. The counterbalance weight is guided by one or more rails (40, 42) that are formed integrally on the inner surface (26a) of the crankcase housing.