Modelling and theoretical research on transient lubrication and wear coupling behavior of main bearing during start-up of low-speed diesel engine

Rui Chen, Bin Zhao, Liyue Tu, Zhongliang Xie, Xiqun Lu, Dequan Zou

科研成果: 期刊稿件文章同行评审

1 引用 (Scopus)

摘要

This study endeavors to establish a transient mixed lubrication model for time-varying wear of main bearings under dynamic loading conditions during the startup process. This model accounts for variations in oil film thickness attributable to deformation, wear profiles, and journal misalignment throughout the operational cycle. The evolution of main bearing lubrication characteristics during the startup process was analyzed, as well as the evolution of wear profiles and their effects on lubricating properties under different numbers of startups. The results indicate that as the number of startup cycles increases, the wear rate gradually levels off. With increasing startup times, there is a decrease in contact pressure and a slight reduction in oil film pressure, resulting in enhanced lubricating performance. Furthermore, the influence of startup duration on wear is significantly greater than that of radial clearance.

源语言英语
页(从-至)480-498
页数19
期刊Proceedings of the Institution of Mechanical Engineers, Part J: Journal of Engineering Tribology
239
4
DOI
出版状态已出版 - 4月 2025

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