As the automotive industry shifts toward hybrid and alternative drive concepts like electromobility, it remains vital to continuously improve internal combustion technology. Internal combustion applications represent the largest portion of transportation technologies. Continuous development and improvement of passenger car engines focus on reducing emission by weight reduction and enhanced efficiency. To gain a competitive advantage in present and future engines, Mercedes-Benz AG developed the innovative NANOSLIDE ® technology that uses thermal spray technology, i.e., twin wire arc spray, to coat the internal diameter of cylinder bores. Computational fluid dynamics (CFD) simulation is utilized to investigate the complex gas flow in the cylinder bore of the crankcase during the coating process. Extensively experiments are performed and analyzed to compare the results with the quantitative analysis in order to enhance the properties of the cylinder coating. The combination of simulation and coating experiments led to the development of uniform distributed layer adhesion strength throughout the length of the cylinder bore.

中文翻译：

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用于汽车发动机气缸孔涂层的 CFD 增强型热喷涂工艺

随着汽车行业转向混合动力和替代驱动概念（如电动汽车），不断改进内燃机技术仍然至关重要。内燃应用代表了运输技术的最大部分。乘用车发动机的持续开发和改进重点是通过减轻重量和提高效率来减少排放。为了在当前和未来的发动机中获得竞争优势，梅赛德斯-奔驰股份公司开发了创新的 NANOSLIDE ® 技术，该技术使用热喷涂技术，即双丝电弧喷涂，对气缸孔的内径进行涂层。利用计算流体动力学 (CFD) 模拟来研究涂层过程中曲轴箱气缸孔中的复杂气体流动。进行了广泛的实验和分析，将结果与定量分析进行比较，以提高气缸涂层的性能。模拟和涂层实验的结合导致了在整个气缸孔长度上均匀分布的层粘附强度的发展。