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利用磨合过程的数学模型分析了内燃机转速、负荷、缸套和活塞环的初始表面粗糙度以及润滑剂粘度等因素对内燃机磨合过程的影响。同时对内燃机磨合过程的摩擦学设计进行了理论上的分析和探讨，利用优化理论对活塞环顶环的剖面形状和磨合过程中内燃机转速和负荷的分配进行了研究。计算结果表明，非对称的活塞环剖面形状可以提高摩擦副的油膜厚度，从而降低磨合失败的可能性；而转速和负荷的合理分配则可以有效缩短内燃机的磨合进程。
The effect of internal combustion engine speed, load, initial surface roughness of cylinder liner and piston ring and lubricant viscosity on the running-in process of internal combustion engine was analyzed by mathematical model of running-in process. At the same time, the tribological design of the internal combustion engine running-in process is theoretically analyzed and discussed. The optimization theory is used to study the profile shape of the top ring of the piston ring and the distribution of engine speed and load during the running-in process. The calculation results show that the asymmetric piston ring cross-sectional shape can increase the oil film thickness of the friction pair, thus reducing the possibility of run-in failure; while the reasonable allocation of speed and load can effectively shorten the running-in process of the internal combustion engine.