A thermal mixed lubrication model to study the textured ring/liner conjunction

In this paper, a semi-deterministic analytic thermal solution is presented for the rough textured ring/liner conjunction. The energy equation is employed to reveal more detailed information about the tribological performance of the textured surfaces in terms of the thermal effects and the viscosity...

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Bibliographic Details
Published in:Tribology international 2016-09, Vol.101, p.178-193
Main Authors: Gu, Chunxing, Meng, Xianghui, Xie, Youbai, Fan, Jiazheng
Format: Article
Language:English
Subjects:
Engines
Liners
Lubrication
Mathematical analysis
Mathematical models
Mixed lubrication
Surface texturing
Temperature effects
Texturing
Thermal effects
Tribological performance
Tribology
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Summary:In this paper, a semi-deterministic analytic thermal solution is presented for the rough textured ring/liner conjunction. The energy equation is employed to reveal more detailed information about the tribological performance of the textured surfaces in terms of the thermal effects and the viscosity change. The effects of surface texturing under the cold and warm engine conditions are studied over a wide range of engine speeds. It is shown that the thermal effects play a crucial role in hydrodynamic lubrication, particularly under the cold start condition. Including the thermal effects in the numerical simulation can ensure the accurate predictions. •An analytic thermal solution is presented for the textured ring/liner conjunction.•Energy equation is used to consider the thermal effects and the viscosity change.•Effects of surface texturing under the cold and warm engine conditions are studied.•The temperature rise of lubricant is significant under the cold engine condition•It shows including the thermal effects can ensure the accurate predictions.
ISSN:0301-679X
1879-2464
DOI:10.1016/j.triboint.2016.04.024