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The Influence of Lubricant Degradation on Measured Piston Ring Film Thickness in a Fired Gasoline Reciprocating Engine
Notay, Rai S. Fox, M.F.
Notay, Rai S.
Fox, M.F.
Publication Date
2019-01
End of Embargo
Supervisor
Rights
(c) 2019 Elsevier. This article is distributed under the Creative Commons CC-BY-NC-ND license.
Peer-Reviewed
Yes
Open Access status
openAccess
Accepted for publication
2018-07-02
Institution
Department
Awarded
Embargo end date
Additional title
Abstract
A laser induced fluorescence system has been developed to visualise the oil film thickness between
the piston ring and cylinder wall of a fired gasoline engine via a small optical window mounted in the
cylinder wall. A fluorescent dye was added to the lubricant in the sump to allow the lubricant to
fluoresce when absorbing laser radiation. The concentration of the dye did not disturb the lubricant
chemistry or its performance. Degraded engine oil samples were used to investigate the influence of
lubricant quality on ring pack lubricant film thickness measurements. The results show significant
differences in the lubricant film thickness profiles for the ring pack when the lubricant degrades which
will affect ring pack friction and ultimately fuel economy.
Version
Accepted manuscript
Citation
Notay RS, Priest M and Fox MF (2019) The influence of lubricant degradation on measured piston ring film thickness in a fired gasoline reciprocating engine. Tribology International. 129: 112-123.
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Type
Article