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Research on different structures of dimpled textures on improving the LE-FPL of engine

Peiling Wang (School of Mechanical and Electrical Engineering, Hubei Polytechnic University, Huangshi, China and Hubei Key Laboratory of intelligent Conveying technology and device (Preparatory), Hubei Polytechnic University, Huangshi, China)
Vanliem Nguyen (School of Mechanical and Electrical Engineering, Hubei Polytechnic University, Huangshi, China and Hubei Key Laboratory of intelligent Conveying technology and device (Preparatory), Hubei Polytechnic University, Huangshi, China)
Xiaoyan Wu (School of Mechanical and Electrical Engineering, Hubei Polytechnic University, Huangshi, China and Hubei Key Laboratory of intelligent Conveying technology and device (Preparatory), Hubei Polytechnic University, Huangshi, China)
Shu Wang (School of Mechanical and Electrical Engineering, Hubei Polytechnic University, Huangshi, China and Hubei Key Laboratory of intelligent Conveying technology and device (Preparatory), Hubei Polytechnic University, Huangshi, China)

Industrial Lubrication and Tribology

ISSN: 0036-8792

Article publication date: 2 April 2021

Issue publication date: 2 June 2021

175

Abstract

Purpose

This paper aims to research the effect of the different structures of dimpled textures on the rod bearing surfaces on improving the engine’s lubrication efficiency and friction power loss (LE-FPL).

Design/methodology/approach

Based on the hydrodynamic model of the rod bearing, the effect of different structures of dimpled surfaces including circular dimples (CD), square dimples (SD), wedge-shaped dimples (WSD), circular-square dimples (CSD) and square-wedge-shaped dimples (SWSD) on ameliorating the LE-FPL is analyzed under the different operating conditions of the engine. The oil film pressure (p), asperity contact force (Wac), friction force (Ff) and coefficient of friction (COF) of the rod bearing are chosen to evaluate the LE-FPL.

Findings

The SD’s performance on improving the LE-FPL is better than all other structures of the CD, WSD, CSD and SWSD. Particularly, the average values of Wac, Ff and COF with the SD is significantly reduced by 14.5%, 28.5% and 33.3% compared to the optimal dimensions of the rod bearing; and by 26.4%, 34.5% and 43.7% compared to the optimal CD (n = m = 6).

Originality/value

The generated friction between surfaces of rod bearings of the engine not only reduces the engine power but also affects the durability of the structures. Thus, the optimal design of the SD to further improve the LE-FPL is very necessary.

Keywords

Acknowledgements

This work has been supported by the Scientific Research Project of Education Department of Hubei Province, China (No. B2019228), the Open Fund Project of Hubei Key Laboratory of Intelligent Transportation Technology and Device, Hubei Polytechnic University, China (No. 2020XY105), and Talent Introduction Fund Project of Hubei Polytechnic University, China (No. 19XJK17R).

Citation

Wang, P., Nguyen, V., Wu, X. and Wang, S. (2021), "Research on different structures of dimpled textures on improving the LE-FPL of engine", Industrial Lubrication and Tribology, Vol. 73 No. 4, pp. 545-553. https://doi.org/10.1108/ILT-07-2020-0286

Publisher

:

Emerald Publishing Limited

Copyright © 2020, Emerald Publishing Limited

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