Engine and low vibration crankshaft therefor

Details Engine and low vibration crankshaft therefor Engine and low vibration crankshaft therefor

1988-12-09

1990-02-20

Kamen, Noah P.

Internal-combustion engines

Vibration compensating device

74603, F02B 7506

Patent

active

049016920

ABSTRACT:
A low vibration crankshaft has crankarms of decreasing inertia/mass and stiffness as their distance torsional vibration node of the rotating vibration system increases. The mass and stiffness of the crankarms may be varied by changing the lateral width of the arms or by other means. The arrangement provides, in combination with an engine or other reciprocating piston machine, an increased or maximized torsional vibration resonant frequency and resulting lower or minimized angular deflections of the crankshaft in the condition of system resonance.

REFERENCES:
patent: Re16024 (1925-03-01), Oldson
patent: 2095970 (1937-10-01), Dashefsky
patent: 2103185 (1937-12-01), Rumpler
patent: 4699098 (1987-10-01), Hoshiba et al.

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