Evaluation of Surface Micro-Texture Tribological Performance Based on Boundary Lubrication Model of Piston Ring-Liner

ZHANG Limin; YUAN Xiaoshuai; QIANG Hui; LIU Xukang; LV Bugao; SHEN Yan

doi:10.3969/j.issn.1001-2222.2024.05.002

Vehicle Engine ›› 2024, Vol. 0 ›› Issue (5) : 12. DOI: 10.3969/j.issn.1001-2222.2024.05.002

Evaluation of Surface Micro-Texture Tribological Performance Based on Boundary Lubrication Model of Piston Ring-Liner

ZHANG Limin¹，YUAN Xiaoshuai¹，QIANG Hui¹，LIU Xukang¹，LV Bugao²，SHEN Yan³

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Abstract

The working condition of piston ring-liner of highly-strengthened diesel engine at the TDC is so severe that boundary lubrication state may dominate at that moment. Surface micro-texture has been proved to be an effective approach to improve surface tribological properties. However, there still lacks boundary lubrication numerical models considering surface texture. The boundary lubrication model of piston ring-liner considering the effect of surface texture and tribofilms was established, which was used to calculate the wear loss that took into account of the effect of surface texture. The calculated results were consistent with the results of boundary lubrication test, and the wear depth of optimal selected surface texture was 33.7% lower than that of non-texture.

Key words

piston ring / liner / boundary lubrication / tribology / micro-texture / wear / numerical model

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ZHANG Limin，YUAN Xiaoshuai，QIANG Hui，LIU Xukang，LV Bugao，SHEN Yan. Evaluation of Surface Micro-Texture Tribological Performance Based on Boundary Lubrication Model of Piston Ring-Liner[J]. Vehicle Engine. 2024, 0(5): 12 https://doi.org/10.3969/j.issn.1001-2222.2024.05.002