Effect of Out-of-Roundness on the Performance of a Diesel Engine Connecting-Rod Bearing

Abstract

In this paper, the dynamic performance of the Ruston and Hornsby VEB diesel engine connecting-rod bearing with circular and out-of-round profiles is analyzed. The effect of cavitation is considered by using a cavitation algorithm, which mimics JFO boundary conditions. The effect of mass inertia is accounted for by solving coupled nonlinear equations of motion. The journal profiles considered are circular, elliptical, semi elliptical and three lobe epicycloid. The predicted journal trajectory and other performance parameters for one complete load cycle are presented for all of the out-of-round profiles and are also compared with the predictions for the circular bearing. Journal bearing; Connecting-rod bearing; Cavitation; Diesel engine; Bearing geometry; Film thickness; Nonlinear equations; Fluid films.

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Document Details

Document Type
Technical Report
Publication Date
Oct 01, 1991
Accession Number
ADA257220

Entities

People

  • D. E. Brewe
  • D. Vijayaraghavan
  • T. G. Keith Jr.

Organizations

  • National Aeronautics and Space Administration

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Algorithms
  • Army Aviation
  • Bearings
  • Computational Science
  • Connecting Rods
  • Diesel Engines
  • Engines
  • Equations
  • Equations Of Motion
  • Geometry
  • Internal Combustion Engines
  • Journal Bearings
  • Mechanical Engineering
  • Reciprocating Engines
  • Thickness
  • Tribology
  • Two Dimensional

Readers

  • Computational Fluid Dynamics (CFD)
  • Fluid Dynamics.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).