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TECHNICAL PAPERS: Gas Turbines: Structures and Dynamics

Rotordynamic and Bearing Upgrade of a High-Speed Turbocharger

[+] Author and Article Information
B. C. Pettinato, P. DeChoudhury

Elliott Company, 901 North Fourth Street, Jeannette, PA 15644-1473

J. Eng. Gas Turbines Power 125(1), 95-101 (Dec 27, 2002) (7 pages) doi:10.1115/1.1519273 History: Received December 01, 2000; Revised March 01, 2001; Online December 27, 2002
Copyright © 2003 by ASME
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References

Figures

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Cross-sectional layout of the original turbocharger
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Reduction of thrust bearing tapers due to wearing of the lands
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Cross-sectional layout of the modified turbocharger with instrumentation
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Thrust bearing redesign and comparison
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Three-axial-groove journal bearing
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Three-lobe journal bearing
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Critical speed map, modified turbocharger
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Turbine end journal bearing metal temperatures
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Active thrust bearing metal temperatures
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Cascade diagram, original turbocharger with three-axial-groove journal bearings, 17 lpm, nominal inlet viscosity
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Original active thrust bearing after rubbing
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Cascade diagram, modified turbocharger with three-lobe journal bearings, 30 lpm, nominal inlet viscosity

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