MONITORING AND IDENTIFYING VIBRATION SOURCES OF OF ROLLING BEARING AND HYDRODYNAMIC BEARING TURBOCHARGERS

Abstract

The monitoring of rotor systems has a relevant importance because it can supply useful data over the proper functioning conditions of the rotating machine. Also it can provide relevant data in order to identify the eventual malfunctioning defects that can be reported in the incipient phase when the rotating machine is not totally damaged and the repairing cost are less higher than the costs that involve the change of the entire rotating machine. The study highlights some aspects related to monitoring of general vibration amplitudes of turbochargers equipped with hydrodynamic and rolling bearings also highlighting aspects related to vibration source identification that occur during turbocharger functioning at high rotating speeds. The measurements accomplished in this study present the general vibration amplitudes of two different types of turbochargers one with hydrodynamic bearings and one with rolling bearings, the signals being gathered from two different directions.