The effects of diesel contaminants on tribological performance on sliding steel on steel contacts
The effects of diesel contaminants on tribological performance on sliding steel on steel contacts
This article presents the findings from a parametric study examining the effect of four contaminants (soot, oxidation, moisture, and sulphuric acid) at varying levels (four for each). It was observed that all contaminants and contaminant levels reduce the conductivity of the oil. Oxidation and soot contaminants produced large increases in viscosity. The wear rate was mainly influenced by acid and soot additions, while the coefficient of friction was increased by all contaminants and contaminant levels. The steady-state charge levels changed for some contaminants. The best correlation of steady-state charge with the other measured tribological parameters of wear rate, friction, and temperature is seen for the series of oxidized oils. The multi-contaminated oil (L4?×?4) shows remarkably little degradation in tribological performance. Analysis of the wear mechanisms shows that soot and oxidation produced abrasion and polishing wear, respectively, while sulphuric acid and moisture produced corrosive wear.
lubricant, contamination, soot, acid, water, oxidation
779-797
Penchaliah, R.
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Harvey, T.J.
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Wood, R.J.K.
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Nelson, K.
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Powrie, H.
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18 April 2011
Penchaliah, R.
a5dae526-f80c-453c-97dd-ded679221577
Harvey, T.J.
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Wood, R.J.K.
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Nelson, K.
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Powrie, H.
cb7da853-44b6-44be-ba74-6db0ff2e15db
Penchaliah, R., Harvey, T.J., Wood, R.J.K., Nelson, K. and Powrie, H.
(2011)
The effects of diesel contaminants on tribological performance on sliding steel on steel contacts.
Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology, 225 (8), .
(doi:10.1177/1350650111409825).
Abstract
This article presents the findings from a parametric study examining the effect of four contaminants (soot, oxidation, moisture, and sulphuric acid) at varying levels (four for each). It was observed that all contaminants and contaminant levels reduce the conductivity of the oil. Oxidation and soot contaminants produced large increases in viscosity. The wear rate was mainly influenced by acid and soot additions, while the coefficient of friction was increased by all contaminants and contaminant levels. The steady-state charge levels changed for some contaminants. The best correlation of steady-state charge with the other measured tribological parameters of wear rate, friction, and temperature is seen for the series of oxidized oils. The multi-contaminated oil (L4?×?4) shows remarkably little degradation in tribological performance. Analysis of the wear mechanisms shows that soot and oxidation produced abrasion and polishing wear, respectively, while sulphuric acid and moisture produced corrosive wear.
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Published date: 18 April 2011
Keywords:
lubricant, contamination, soot, acid, water, oxidation
Organisations:
Engineering Science Unit
Identifiers
Local EPrints ID: 194925
URI: http://eprints.soton.ac.uk/id/eprint/194925
ISSN: 1350-6501
PURE UUID: f6d251db-1d80-4f7d-8574-f20012354f08
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Date deposited: 15 Aug 2011 08:41
Last modified: 15 Mar 2024 02:47
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Author:
R. Penchaliah
Author:
K. Nelson
Author:
H. Powrie
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