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Title: Effect of cylinder de-activation on the tribological performance of compression ring conjunction
Authors: Bewsher, S.R.
Turnbull, Robert
Mohammadpour, Mahdi
Rahmani, Ramin
Rahnejat, Homer
Offner, Gunter
Knaus, O.
Keywords: Cylinder de-activation
Piston compression ring conjunction
Mixed regime of lubrication
Friction
Power loss
Issue Date: 2016
Publisher: © The Authors. Published by SAGE Publications.
Citation: BEWSHER, S.R. ...et al., 2016. Effect of cylinder de-activation on the tribological performance of compression ring conjunction. Proceedings of the Institution of Mechanical Engineers Part J: Journal of Engineering Tribology, https://doi.org/10.1177/1350650116684985.
Abstract: The paper presents transient thermal-mixed-hydrodynamics of piston compression ring-cylinder liner conjunction for a 4-cylinder 4-stroke gasoline engine during a part of the New European Drive Cycle (NEDC). Analyses are carried out with and without cylinder de-activation (CDA) technology in order to investigate its effect upon the generated tribological conditions. In particular, the effect of CDA upon frictional power loss is studied. The predictions show that overall power losses in the piston-ring cylinder system worsen by as much as 10% because of the increased combustion pressures and liner temperatures in the active cylinders of an engine operating under CDA. This finding shows the down-side of this progressively employed technology, which otherwise is effective in terms of combustion efficiency with additional benefits for operation of catalytic converters. The expounded approach has not hitherto been reported in literature.
Description: This article was published in the Proceedings of the Institution of Mechanical Engineers Part J: Journal of Engineering Tribology [© SAGE] and the definitive version is available at: https://doi.org/10.1177/1350650116684985.
Sponsor: This research was funded by the the Engineering and Physical Sciences Research Council (EPSRC) and AVL List.
Version: Accepted for publication
DOI: 10.1177/1350650116684985
URI: https://dspace.lboro.ac.uk/2134/23364
Publisher Link: https://doi.org/10.1177/1350650116684985
ISSN: 1350-6501
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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