Abstract
This study is an optimized extension based on the authors’ previous research on the tribo-chemical reaction under constant temperature field of two-stroke internal combustion engines (ICEs). It establishes a coupled analysis model that considers the tribo-chemical reactions, dynamic contact, and interface lubrication of the piston ring-cylinder liner (PRCL) system under transient temperature conditions. In this study, for the first time, the prediction of the tribofilm thickness and its influence on the surface micro-topography (the comprehensive roughness) are coupled in the working temperature field of the PRCL system, forming an effective model framework and providing a model basis and analytical basis for subsequent research. This study findings reveal that by incorporating temperature and tribofilm into the simulation model, the average friction deviation throughout the stroke decreases from 8.92% to 0.93% when compared to experimental results. Moreover, the deviation during the combustion regime reduces from 39.56% to 7.34%. The proposed coupled model provides a valuable tool for the evaluation of lubrication performance of the PRCL system and supports the analysis software forward design in two-stroke ICEs.
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Acknowledgements
This work was supported by the Shandong Provincial Natural Science Foundation (No. ZR2022QE183). We also thank Dr. Abdullah Azam and Prof. Anne Neville for their support and the active discussions and valuable comments during this work (Dr. Abdullah Azam: The University of Leeds, A.Azam@leeds.ac.uk; Prof. Anne Neville: A.Neville@leeds.ac.uk).
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Xiuyi LYU. He received his Ph.D. degree from Harbin Engineering University in 2022. During this period, he went to the University of Leeds for a one-year exchange as a joint Ph.D. student, under the guidance of Professor Anne Neville. He joined the School of Shipping and Naval Architecture at Chongqing Jiaotong University. His research areas cover friction pair with low-friction design for IC engines, tribo-chemical reaction, and tribofilm.
Jiang HU. He received his bachelor degree in mechanical engineering in 2017 from Chongqing Technology and Business University, Chongqing, China. Now, he is pursuing his master degree at Chongqing Jiaotong University. His research interests include friction-reducing design and mixed lubrication.
Xuan MA. He received his Ph.D. degree from Harbin Engineering University in 2018. He joined the College of Power and Energy Engineering in HEU. He is an associate professor in the College. His research areas cover the development of new anti-wear technology for ship power systems.
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Lyu, X., Hu, J., Wang, Y. et al. Effect of temperature on tribofilm growth and the lubrication of the piston ring-cylinder liner system in two-stroke marine engines. Friction (2024). https://doi.org/10.1007/s40544-024-0872-9
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DOI: https://doi.org/10.1007/s40544-024-0872-9