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Nonlinear Transient Response of Tilting 4 Pad Bearings: Turbocharger Systems

[+] Author Affiliations
Jiayang Ying, Yinghou Jiao, Zhaobo Chen

Harbin Institute of Technology, Harbin, Heilongjiang, China

R. Gordon Kirk

Virginia Polytechnic Institute and State University, Blacksburg, VA

Yongxin Feng

Guangdong Power Test & Research Institute, Guangzhou, Guangdong, China

Paper No. IMECE2013-64128, pp. V04BT04A019; 8 pages
doi:10.1115/IMECE2013-64128
From:
  • ASME 2013 International Mechanical Engineering Congress and Exposition
  • Volume 4B: Dynamics, Vibration and Control
  • San Diego, California, USA, November 15–21, 2013
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-5625-3
  • Copyright © 2013 by ASME

abstract

High speed and high performance engines are often equipped with turbochargers to increase power density over the operating speed range. Tilting pad bearings are now much more applied in many types of rotor systems. This paper presents nonlinear dynamical behavior of a typical turbocharger supported by two tilting 4 pad bearings. The bearing oil-film force was calculated by a database method and the influence of both pad offset and preload were studied. The nonlinear transient vibration is represented by bifurcation diagrams. The results directly show that pad offset and preload greatly influence the nonlinear vibrations of the turbocharger-tilting pad bearings system. In some certain speed range, the motions of the bearing pads are different from that of the bearing journal centerline.

Copyright © 2013 by ASME

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