NDLI: Rotor Dynamic Improvement for a Locomotive Turbocharger

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Rodri´guez, He´ctor M. Anthony, H. Furman Panambur, Suresha
Copyright Year	2003
Abstract	Turbocharger designs typically incorporate fixed-geometry hydrodynamic bearings. These bearings are known to be prone to exhibit sub-synchronous vibration response. This self-induced sub-synchronous vibration component is due to stiffness cross-coupling in the bearings and is independent of the level of rotor unbalance. This type of vibration has been shown to have the potential to destabilize the rotor-bearing system and inducing rapid growth in the vibration amplitude that could lead to mechanical failure. The present work considers the bearing redesign for a locomotive turbocharger with the objective of eliminating sub-synchronous vibration components by increasing the threshold onset speed with no increase in cost or bearing size. The paper describes the characterization of the original design, the optimization of the new bearing design and the experimental validation. As shown in the results, the optimized bearing configuration eliminated the sub-synchronous vibration component within the turbocharger speed range.
Sponsorship	Internal Combustion Engine Division and Rail Transportation Division
Starting Page	93
Ending Page	98
Page Count	6
File Format	PDF
ISBN	0791841618
DOI	10.1115/ICEF2003-0757
Volume Number	Design and Control of Diesel and Natural Gas Engines for Industrial and Rail Transportation Applications
Conference Proceedings	ASME 2003 Internal Combustion Engine and Rail Transportation Divisions Fall Technical Conference
Language	English
Publisher Date	2003-09-07
Publisher Place	Erie, Pennsylvania, USA
Access Restriction	Subscribed
Subject Keyword	Design Geometry Vibration Locomotives Bearings Rotors Bearing design Turbochargers Stiffness Failure Optimization
Content Type	Text
Resource Type	Article

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Equation-Free Continuation of Maximal Vibration Amplitudes in a Nonlinear Rotor-Bearing Model of a Turbocharger

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