Variable pressure scuffing of a flake graphite cast iron diesel cylinder liner
Variable pressure scuffing of a flake graphite cast iron diesel cylinder liner
A novel scuffing methodology was developed utilising variable specimen geometry to replicate numerically modelled top compression ring contact pressures (4-62 MPa) from a 12.8-litre heavy duty diesel engine as a function of stroke position. Scuffing of grade 250 cast iron was induced by reciprocating sliding (TE77) against a drip lubricated (PAO4) 52100 rectangular contact operating at 15 Hz and 311 N normal load by incrementing the temperature at 4˚C per minute until a sharp rise in friction coefficient was observed. Scuffing initiation temperature was insensitive to dynamic contact pressure. Formation of an oxide ‘glaze’ layer resulted in friction coefficients as low as 0.03 prior to severe scuffing.
Cast iron, Glaze, Oxidative, Piston ring, Scuffing
Walker, John
b300eafd-5b0a-4cf5-86d2-735813b04c6f
Barnes, Zach
7f359d15-7a5d-4329-a5f0-085c59546049
Shehata, Ahmed
84177fa3-5dea-4f34-ba21-ca71ca2c0e97
Jiang, Peng
2dbc460b-c6fa-43d4-8840-ea8b5ad272af
Kamps, Timothy
fde15660-4064-4ba7-96dd-7c8ba6e929d0
January 2023
Walker, John
b300eafd-5b0a-4cf5-86d2-735813b04c6f
Barnes, Zach
7f359d15-7a5d-4329-a5f0-085c59546049
Shehata, Ahmed
84177fa3-5dea-4f34-ba21-ca71ca2c0e97
Jiang, Peng
2dbc460b-c6fa-43d4-8840-ea8b5ad272af
Kamps, Timothy
fde15660-4064-4ba7-96dd-7c8ba6e929d0
Walker, John, Barnes, Zach, Shehata, Ahmed, Jiang, Peng and Kamps, Timothy
(2023)
Variable pressure scuffing of a flake graphite cast iron diesel cylinder liner.
Tribology International, 179, [108155].
(doi:10.1016/j.triboint.2022.108155).
Abstract
A novel scuffing methodology was developed utilising variable specimen geometry to replicate numerically modelled top compression ring contact pressures (4-62 MPa) from a 12.8-litre heavy duty diesel engine as a function of stroke position. Scuffing of grade 250 cast iron was induced by reciprocating sliding (TE77) against a drip lubricated (PAO4) 52100 rectangular contact operating at 15 Hz and 311 N normal load by incrementing the temperature at 4˚C per minute until a sharp rise in friction coefficient was observed. Scuffing initiation temperature was insensitive to dynamic contact pressure. Formation of an oxide ‘glaze’ layer resulted in friction coefficients as low as 0.03 prior to severe scuffing.
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Variable Pressure PrePrint
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More information
Accepted/In Press date: 2 December 2022
e-pub ahead of print date: 5 December 2022
Published date: January 2023
Additional Information:
Funding Information:
The authors would like to thank Ricardo for access to the RINKPAK suite of numerical modelling software. This research did not receive any specific grant from funding agencies in the public, commercial, or not-for-profit sectors. For the purpose of open access, the author has applied a CC BY public copyright licence to any Author Accepted Manuscript version arising from this submission.
Publisher Copyright:
© 2022 The Authors
Keywords:
Cast iron, Glaze, Oxidative, Piston ring, Scuffing
Identifiers
Local EPrints ID: 473137
URI: http://eprints.soton.ac.uk/id/eprint/473137
ISSN: 0301-679X
PURE UUID: 464a666c-184c-4b4d-b123-c088be99a024
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Date deposited: 10 Jan 2023 18:34
Last modified: 17 Mar 2024 03:51
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Contributors
Author:
Zach Barnes
Author:
Ahmed Shehata
Author:
Peng Jiang
Author:
Timothy Kamps
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