System for balancing a four-stroke internal combustion engine

Internal-combustion engines – Vibration compensating device

Patent

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74603, F02B 7506

Patent

active

050638920

ABSTRACT:
A system balancing an internal combustion engine, particularly a four-stroke engine with five cylinders in line, in which two of the counterweights for balancing the crankshaft have asymmetric geometry defined by an additional mass in each case. The respective centers of gravity of the two additional masses are situated in the plane containing the resultant moment of the rotary components of the first-order alternating forces and the centrifugal forces of the rotating masses.

REFERENCES:
patent: 4552104 (1985-11-01), Hara et al.
patent: 4785772 (1988-11-01), Krotky et al.

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