An Analysis of Floating Piston Pin

Paper #:
  • 2011-01-1407

Published:
  • 2011-04-12
Citation:
Shi, F., "An Analysis of Floating Piston Pin," SAE Int. J. Engines 4(1):2100-2105, 2011, https://doi.org/10.4271/2011-01-1407.
Author(s):
Pages:
6
Abstract:
Presented in the paper is a comprehensive analysis for floating piston pin. It is more challenging because it is a special type of journal bearing where the rotation of the journal is coupled with the friction between the journal and the bearing. In this analysis, the multi-degree freedom mass-conserving mixed-EHD equations are solved to determine the coupled pin rotation and friction. Other bearing characteristics, such as minimum film thickness, pin secondary motions in both connecting-rod small-end bearing and piston pin-boss bearing, power loss etc are also determined. The mechanism for floating pin to have better scuffing resistance is discovered. The theoretical and numerical model is implemented in the GM internal software FLARE (Friction and Lubrication Analysis for Reciprocating Engines).
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