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Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/23335

Title: On the transient three dimensional tribodynamics of internal combustion engine top compression ring
Authors: Baker, Christopher E.
Theodossiades, Stephanos
Rahmani, Ramin
Rahnejat, Homer
Fitzsimons, Brian
Keywords: Internal combustion engines
Ring dynamics
Piston ring
Power loss
Issue Date: 2017
Publisher: © American Society of Mechanical Engineers (ASME)
Citation: BAKER, C. ... et al., 2017. On the transient three dimensional tribodynamics of internal combustion engine top compression ring. Journal of Engineering for Gas Turbines and Power, 139(6), paper 062801.
Abstract: There are increasing pressures upon the automotive industry to reduce harmful emissions as well as meeting the key objective of enhanced fuel efficiency, whilst improving or retaining the engine output power. The losses in an internal combustion engine can be divided into thermal and parasitic as well as due to gas leakage because of untoward compression ring motions. Frictional losses are particularly of concern at low engine speeds, assuming a greater share of the overall losses. Piston-cylinder system accounts for nearly half of all the frictional losses. Loss of sealing functionality of the ring pack can also contribute significantly to power losses as well as exacerbating harmful emissions. The dynamics of compression ring is inexorably linked to its tribological performance, a link which has not been made in many reported analyses. A fundamental understanding of the interplay between the top compression ring three-dimensional elastodynamic behaviour, its sealing function and contribution to the overall frictional losses is long overdue. This paper provides a comprehensive integrated transient elasto-tribodynamic analysis of the compression ring to cylinder liner and its retaining piston groove lands' conjunctions, an approach not hitherto reported in the literature. The methodology presented aims to aid the piston ring design evaluation processes. Realistic engine running conditions are used which constitute international drive cycle testing conditions.
Description: This article was published in the Journal of Engineering for Gas Turbines and Power [© ASME] and the definitive version is available at: http://dx.doi.org/10.1115/1.4035282
Sponsor: Engineering and Physical Sciences Research Council for the Encyclopaedic Program Grant (grant number: EP/G012334/1)
Version: Accepted for publication
DOI: 10.1115/1.4035282
URI: https://dspace.lboro.ac.uk/2134/23335
Publisher Link: http://dx.doi.org/doi:10.1115/1.4035282
ISSN: 1528-8919
Appears in Collections:Published Articles (Mechanical, Electrical and Manufacturing Engineering)

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