Influence of sliding surface roughness and oil temperature on piston ring pack operation of an automotive IC engine

Andrzej Wolff

Abstract

In the paper a comprehensive model of a piston ring pack motion on an oil film has been presented. The local oil film thickness can be compared to height of the combined roughness of sliding surfaces of piston rings and cylinder liner. Equations describing the mixed lubrication problem based on the empirical mathematical model formulated in works of Patir, Cheng and Greenwood, Tripp have been combined and used in this paper. The developed model takes the following phenomena into account: hydrodynamic and contact forces, spring and gas forces acting on piston rings. The rings motion concerning low and high temperature of cylinder surface has been compared. These results concern cases of hydrodynamic and mixed lubrication. Changes of oil wetted area and contact zone of piston rings have been shown. In addition the oil film thickness distribution along cylinder liner and all the forces acting on piston rings have been analysed and discussed. The results have been presented in form of relevant diagrams. The developed model and software can be utilized for optimization of piston rings design.
Author Andrzej Wolff ZEUP
Andrzej Wolff,,
- Department of Vehicle Maintance and Operation
Journal seriesIOP Conference Series: Materials Science and Engineering, ISSN 1757-8981, e-ISSN 1757-899X
Issue year2016
No148
Pages1-10
Publication size in sheets0.5
ConferenceMiędzynarodowa Konferencja Motoryzacyjna KONMOT 2016, 22-09-2016 - 23-09-2016, Kraków, Polska
DOIDOI:10.1088/1757-899X/148/1/012090
URL http://iopscience.iop.org/article/10.1088/1757-899X/148/1/012090/pdf
Languagepl polski
LicenseJournal (articles only); published final; Uznanie Autorstwa (CC-BY); after publication
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MSE_148_1_012090.pdf 810.07 KB
Score (nominal)15
ScoreMinisterial score = 15.0, 28-11-2017, ArticleFromJournalAndMatConf
Ministerial score (2013-2016) = 15.0, 28-11-2017, ArticleFromJournalAndMatConf
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