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Experimental and numerical investigations of oil film formation and friction in a piston ring–liner contact
Leonardo Centre for Tribology, Department of Mechanical Engineering, University of Sheffield.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.
Leonardo Centre for Tribology, Department of Mechanical Engineering, University of Sheffield.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.ORCID iD: 0000-0001-7029-1112
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2013 (English)In: Proceedings of the Institution of mechanical engineers. Part J, journal of engineering tribology, ISSN 1350-6501, E-ISSN 2041-305X, Vol. 227, no 2, p. 126-140Article in journal (Refereed) Published
Abstract [en]

The piston ring–cylinder liner contact is a major source of the total parasitic losses in an internal combustion engine. The lubrication process of this contact highly influences the amount of friction, oil consumption and wear that occurs. In this work, a reciprocating test rig combined with an ultrasonic film thickness measurement system was developed and then used for tribological investigation of the piston ring–cylinder liner contact under idealised cold conditions. A special piston ring and cylinder liner holder were designed and five sensors were glued on to the back side of the liner specimen. Ultrasonic reflections captured by the sensors, used to obtain the film thickness, and friction were continuously recorded as the piston ring section reciprocated over the liner. Several experiments were performed at different speed and load conditions. Furthermore, a numerical model has been developed to predict film thickness and friction in all lubrication regimes. The experimentally measured film thickness and friction were compared with the output from the numerical model and good correlation was found. The parameters affecting the accuracy of the ultrasound measurements and numerical simulations of film thickness and friction are then discussed.

Place, publisher, year, edition, pages
2013. Vol. 227, no 2, p. 126-140
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Research subject
Machine Elements
Identifiers
URN: urn:nbn:se:ltu:diva-4253DOI: 10.1177/1350650112464706ISI: 000316639400004Scopus ID: 2-s2.0-84877869299Local ID: 22c0761b-f0f1-44c7-94a2-1219afab4e8aOAI: oai:DiVA.org:ltu-4253DiVA, id: diva2:977117
Note
Validerad; 2013; 20121112 (andbra)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-07-10Bibliographically approved

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Spencer, AndrewAlmqvist, AndreasLarsson, Roland

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Tribology (Interacting Surfaces including Friction, Lubrication and Wear)

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