Engineering Transactions, 9, 1, pp. 43-50, 1961

Wyznaczanie Częstości Skrętnych Drgań Własnych Silnika Rzędowego z Dołączonymi Masami Bocznymi

A. Ripianu
Institut Politechnique de Cluj

This paper presents a method for determining the frequency of torsional vibration of a row engine crankshaft with counterbalance weights. The method proposed by O. KRAMER and B. FRANK and completed by R. ARNOLD is applied here to a relatively complex case. It enables us to find the natural frequency, no tests being carried out. The case of a k-cylinder row engine with six counterbalance weights is considered. It is stressed that analagous considerations may be done for any number of coun-terbalance weights. The method described is based on the notion of the reduced mass, dynamically equivalent to a system of masses. A numerical example is given by determining the natural vibration of the cranks-haft of a six-cylinder engine with six counterbalance weights.

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Copyright © Polish Academy of Sciences & Institute of Fundamental Technological Research (IPPT PAN).


OTTO KRAEMER, Drehschwingungsrechnung, Umdruck A, Karlsruhe 1954.

BERTHOLD FRANK, Abgekürzte Drehschwingungsrechnungen mit Hilfe der Ersatzmasse und der Ersatzkraft, Dissertation, Karlsruhe 1939.

ROBFTR ARNOLD, Dissertation, Karlsruhe 1944.