Marine engine with reciprocating force balancer

Details Marine engine with reciprocating force balancer Marine engine with reciprocating force balancer

1997-03-25

1999-07-27

Solis, Erick R.

Internal-combustion engines

Vibration compensating device

Balancing arrangement

74590, F02B 7506

Patent

active

059272422

ABSTRACT:
An engine for use in a marine propulsion system for use on a boat having a force balancer mechanism for off-setting the shaking force created by the reciprocating pistons. In a two-cylinder, four-stroke marine engine, a pair of reciprocating pistons move in unison within respective cylinders. The force balancer mechanism is mounted to the rotating crankshaft such that rotation of the crankshaft results in reciprocating movement of the balance weight in a direction opposite the pair of pistons. The balance weight of the force balancer mechanism is contained within a balance weight housing formed in the engine block. The weight of the balance weight and the distance of the balance weight from the axis of rotation of the crankshaft are selected to optimally reduce the amount of shaking force in the engine.

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