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Lubricants 2017, 5(1), 7; doi:10.3390/lubricants5010007

Rotordynamic and Friction Loss Measurements on a High Speed Laval Rotor Supported by Floating Ring Bearings

1
Precision and Microsystems Engineering, Delft University of Technology, Mekelweg 2, 2628 CD Delft, The Netherlands
2
Research and Development, Mitsubishi Turbocharger and Engine Europe, Damsluisweg 2, 1332 EC Almere, The Netherlands
3
Institute of Applied Mechanics, Technische Universität München, 85748 Garching, Germany
*
Author to whom correspondence should be addressed.
Academic Editor: Michel Fillon
Received: 30 January 2017 / Revised: 22 February 2017 / Accepted: 6 March 2017 / Published: 15 March 2017
(This article belongs to the Special Issue Bearings in Turbomachinery)
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Abstract

Floating ring bearings are the commonly used type of bearing for automotive turbochargers. The automotive industry continuously investigates how to reduce the bearing friction losses and how to create silent turbochargers. Many of these studies involve creating a numerical model of the rotor-bearing system and performing validation on a test bench on which a turbocharger is driven by hot gases. This approach, however, involves many uncertainties which diminish the validity of the measurement results. In this study, we present a test setup in which these uncertainties are minimized. The measurement results show the behavior of the floating ring bearing as a function of oil feed pressure, oil feed temperature, rotor unbalance and bearing clearances. Next to an increased validity, the test setup provides measurement data with good repeatability and can therefore represent a case study which can be used for validation of rotor-bearing models. View Full-Text
Keywords: floating ring bearings; turbocharger; friction losses; rotordynamic; hydrodynamic bearing; laval rotor; oil whirl; sub-synchronous vibration; unbalance floating ring bearings; turbocharger; friction losses; rotordynamic; hydrodynamic bearing; laval rotor; oil whirl; sub-synchronous vibration; unbalance
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Eling, R.; te Wierik, M.; van Ostayen, R.; Rixen, D. Rotordynamic and Friction Loss Measurements on a High Speed Laval Rotor Supported by Floating Ring Bearings. Lubricants 2017, 5, 7.

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