Crankshafts without torsional vibration resonance

Details Crankshafts without torsional vibration resonance Crankshafts without torsional vibration resonance

1989-10-19

1991-04-16

Luong, Vinh T.

Machine element or mechanism

Elements

Cranks and wrist pins

74604, F16C 304

Patent

active

050073060

ABSTRACT:
A crankshaft used in piston engines has vibration and noise level normally associated therewith substantially reduced. The natural frequencies of torsional vibration of individual cranks are made unequal by making main journals of different outside diameters.

REFERENCES:
patent: 286404 (1883-10-01), Dowes
patent: 1254159 (1918-01-01), Riedler
patent: 1549996 (1925-08-01), Liebowitz
patent: 1908071 (1933-05-01), Snyder
patent: 2182228 (1939-12-01), Groene et al.
patent: 2333859 (1943-11-01), Groene
patent: 3132906 (1964-05-01), Sternlicht
patent: 3257865 (1966-06-01), Seulen et al.
patent: 3309941 (1967-03-01), Kappel
patent: 3388616 (1968-06-01), Kume
patent: 4235481 (1980-11-01), Fukuoka et al.
Practical Solution of Torsional Vibration Problems, W. Ker Wilson, 2nd Edition, 1940, pp. 8-13.
Elements of Strength of Materials, S. Timoshenko & D. H. Young, 5th Edition, 1968, pp. 182-185.

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