Analiza gibanja ventilske opruge

  • Ivan Mahalec

Abstract

The paper considers the surge of a spring, retained at oneend and controlled by a cam at the other end. The periodic liftfunction of the cam was approximately replaced by the Fourierpoly nom. The forced displacement amplitudes were determinedfor each harmonic of this poly nom. The theory of forced longitudinal vibrations of a bar with continuously distributed mass,elasticity and dumping was applied to simulate the motion ofspring coils. It was found out that two or more modes may consistconcurrently in the spring. This was obtained by analyzingmathematical formulas and by comparing computed and publishedmeasured results. The line spectrum of the Fourier serieswas introduced as a useful tool for estimating the influence ofthe high order harmonics on the spring surge.

References

HUSSMANN, A.: Schwingungen in schraubenformigen

Ventilfedern. Dissertation, TH Berlin, 1938 .

STRAUBEL, M.: Beitrag zur Erjassung und Beeinjlussung

des Schwingungsverhalten van Nockengetrieben. Dissertation,

TH Miinchen, 1964.

KLOTTER, K.: Technische Schwingungslehre, Erster

Band: Einfache Schwinger, Teil A: Lineare Schwingungen.

Dritte Auflage, Springer-Verlag Berlin Heidelberg New

York 1981, ISBN 3-540-08673-0.

BRONSTEJN, I. N., SEMENDJAJEV, K. A.:

Matematic'ki prirucnik za inzenjere i studente. Tehnicka

knjiga Zagreb, 1964.

HAFNER, K. E.: Investigating the Dynamic Behaviour of

Valve Mechanisms with Engineering Vibration Methods,

'lOth International Congress Combustion Engines'. New

York, 1973, str. 313-337.

ROSKILLY, M., FERAN, W. H.: Valve Gear Design

Analysis. XXI Fisita Congress, Belgrade 1986, Paper

Application of Computers in Valve Gear Design. SAE Inc.

New York 1963, Library of Congress Catalog Card Number:

-23158.

How to Cite
1.
Mahalec I. Analiza gibanja ventilske opruge. Promet - Traffic&Transportation. 1;8(1-2):1-10.
Section
Older issues