Analytical Modeling of Turbocharger Rotors
Journal Title: RECENT - Year 2012, Vol 13, Issue 35
Abstract
Rotordynamics was and still is a high applicability field to all categories of rotating machines. The turbocharger is part of high precision rotating machines. Its rotor, sustained by two categories of bearings, represents the main part of the turbocharger: classical ones use hydrodynamic bearings; modern ones use hybrid rolling bearings with ceramic rolling elements. The performances that turbochargers are capable of are closely related to dynamical phenomena that appear at the level of its rotor. Even if we talk about vibration behaviour, or unbalanced masses and assembly defects, the turbocharger rotor has a high precision execution, and by monitoring its behaviour, we are capable to obtain important data sets, which could predict its durability and also charging performances. The paper work is focused on highlighting some aspects related to mathematical modeling of turbocharger rotors and also in highlighting some aspects related to rotor dynamic stability, influenced by parameters related to: mass; eccentricity, rigidity and damping effects.
Authors and Affiliations
Cosmin BORICEAN, Ion BALCU, Ioan ROŞCA
Keywords
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