Hydrodynamic Conjunction of Textured Journal Surface—Bearing for Improved Frictional Response during Warm-Up of an Internal Combustion Engine

Ali Usman, Sadia Riaz and Cheol Woo Park
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Ali Usman: Department of Mechanical Engineering, COMSATS University Islamabad, Wah Cantt 47040, Pakistan
Sadia Riaz: Department of Mechanical Engineering, NUST College of EME, National University of Sciences and Technology, Islamabad 44000, Pakistan
Cheol Woo Park: School of Mechanical Engineering, Kyungpook National University, Daegu 701-702, Korea

Energies, 2018, vol. 11, issue 12, 1-15

Abstract: Considerable prime global energy is used in the transport sector. Significant energy is lost to overcome the internal friction of engines in transport vehicles. Journal bearings are crucial tribo-pairs and passive components that cause energy loss. Frictional losses increase extensively during the warm-up period of an engine due to high lubricant viscosity. Recent tribological developments have shown that surface textures can be a potential solution to reduce friction. A numerical investigation is performed to evaluate the effect of surface texture on the frictional and lubrication performance of a journal bearing at varying thermal operating conditions in an internal combustion engine. Temperature variations during engine warm-up are considered with oil rheology to observe texture-based improvements. Surface texture substantially reduces frictional energy loss during engine warm-up. Eight different monograde and multigrade engine oils are considered, and consistency is observed in texture-based improved outcomes.

Keywords: surface texture; journal bearing; friction; internal combustion engines (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View complete reference list from CitEc
Citations: View citations in EconPapers (1)

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