Journal
TRIBOLOGY INTERNATIONAL
Volume 59, Issue -, Pages 248-258Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2012.09.002
Keywords
Piston ring; Mixed lubrication; Friction; Heat
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Funding
- Engineering and Physical Sciences Research Council (EPSRC) under Encyclopaedic Programme Grant
- Aston Martin Lagonda
- EPSRC [EP/G012334/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/G012334/1] Funding Source: researchfish
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Fuel efficiency is the main IC engine attribute, with the compression ring-bore contact consuming nearly 5% of the fuel energy. Analyses are often idealised, such as isothermal condition and smooth surfaces, the former being particularly contrary to practice. An analytic solution to the average flow model is presented for this contact with a new analytical thermal model. The generated contact temperatures, particularly at the inlet result in thinner films than the idealised analyses. For the simulated city driving condition the power loss is mainly due to viscous shear under cold engine condition, whilst for a hot engine boundary friction dominates. (c) 2012 Elsevier Ltd. All rights reserved.
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