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Effect of cylinder de-activation on the tribological performance of compression ring conjunction
journal contribution
posted on 2016-12-06, 15:41 authored by Rickie Bewsher, Rob Turnbull, Mahdi Mohammadpour, Ramin RahmaniRamin Rahmani, Homer Rahnejat, Gunter Offner, O. KnausThe 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.
Funding
This research was funded by the the Engineering and Physical Sciences Research Council (EPSRC) and AVL List.
History
School
- Mechanical, Electrical and Manufacturing Engineering
Published in
Proceedings of the Institution of Mechanical Engineers Part J: Journal of Engineering TribologyVolume
231Issue
8Pages
997-1006Citation
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, 231 (8), pp. 997-1006.Publisher
© The Authors. Published by SAGE Publications.Version
- VoR (Version of Record)
Publisher statement
This work is made available according to the conditions of the Creative Commons Attribution 3.0 Unported (CC BY 3.0) licence. Full details of this licence are available at: http://creativecommons.org/licenses/by/3.0/Acceptance date
2016-11-11Publication date
2016-12-15Copyright date
2017Notes
This is an Open Access Article. It is published by Sage under the Creative Commons Attribution 3.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/3.0/ISSN
1350-6501Publisher version
Language
- en