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.

本研究是作者在前期对二冲程内燃机（ICE）恒温场下摩擦化学反应研究的基础上的优化延伸。它建立了一个耦合分析模型，考虑瞬态温度条件下活塞环-缸套（PRCL）系统的摩擦化学反应、动态接触和界面润滑。本研究首次将摩擦膜厚度的预测及其对表面微观形貌（综合粗糙度）的影响耦合到PRCL系统的工作温度场中，形成了有效的模型框架，并提供了模型为后续研究奠定基础和分析依据。这项研究结果表明，通过将温度和摩擦膜纳入模拟模型，与实验结果相比，整个冲程的平均摩擦偏差从 8.92% 降低到 0.93%。此外，燃烧状态期间的偏差从39.56%减少到7.34%。所提出的耦合模型为评估 PRCL 系统的润滑性能提供了一个有价值的工具，并支持二冲程 ICE 中的分析软件正向设计。