Abstract

A method for estimating the vibration and noise power produced by repetitive impacts in machines is presented. The dynamics of lateral piston motions across the cylinder clearance spaces of reciprocating machines are analyzed. The results of this analysis are then applied to derive estimates for the noise and vibration produced by piston-slap impacts. On the basis of some rough approximations for typical engine parameters the piston-slap-induced noise and vibrations of modern diesels are estimated.

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