Morris_et_al_Trib_Int_2013.pdf (580.6 kB)
Tribology of piston compression ring conjunction under transient thermal mixed regime of lubrication
journal contribution
posted on 2013-03-06, 14:37 authored by Nick MorrisNick Morris, Ramin RahmaniRamin Rahmani, Homer Rahnejat, Paul KingPaul King, Brian FitzsimonsFuel 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.
History
School
- Mechanical, Electrical and Manufacturing Engineering
Citation
MORRIS, N. ... et al., 2013. Tribology of piston compression ring conjunction under transient thermal mixed regime of lubrication. Tribology International, 59, pp.248-258.Publisher
© Elsevier Ltd.Version
- AM (Accepted Manuscript)
Publication date
2013Notes
This article was published in the journal, Tribology International [© Elsevier Ltd.] and the definitive version is available at: tp://dx.doi.org/10.1016/j.triboint.2012.09.002ISSN
0301-679XPublisher version
Language
- en