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A First Principle Engine Model for Up-Front Design: Further Studies on Hydrodynamic Bearing Models

[+] Author Affiliations
Zheng-Dong Ma, N. C. Perkins

University of Michigan, Ann Arbor, MI

Paper No. IMECE2002-32154, pp. 739-747; 9 pages
  • ASME 2002 International Mechanical Engineering Congress and Exposition
  • Dynamic Systems and Control
  • New Orleans, Louisiana, USA, November 17–22, 2002
  • Conference Sponsors: Dynamic Systems and Control Division
  • ISBN: 0-7918-3629-0 | eISBN: 0-7918-1691-5, 0-7918-1692-3, 0-7918-1693-1
  • Copyright © 2002 by ASME


The design of a conceptually new engine system requires an engineering tool that can quickly estimate effects of the design changes on NVH and durability at the very onset of the engine design cycle. In (Ma, et al., 2000 and Ma and Perkins 2001), we presented an engine modeling template (EngTmp) to support up-front design of engine systems. The EngTmp employs a recursive formulation of multibody dynamics that leads to the minimum number of equations of motion to represent engine dynamics and vibration. The engine models generated from the EngTmp thus enjoy greater computational efficiency. The objective of this paper is to provide some further discussions on the hydrodynamic bearing models employed in the EngTmp and numerical results obtained recently for the sample engine. The attention will be focused on discussing effects of employing different hydrodynamic bearing models based on the Reynolds equation.

Copyright © 2002 by ASME
Topics: Engines , Bearings , Design



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