Abstract The temperature of elastohydrodynamically lubricated (EHL) contacts strongly influences fluid friction. The higher the EHL temperature, the lower is the effective lubricant viscosity and hence shear stress. EHL contacts with Diamond-like Carbon (DLC) coatings have shown lower fluid friction than EHL contacts without DLC coatings. A strong thermal insulation effect resulting in higher EHL temperatures is indicated. This has been confirmed by theoretical investigations, but rarely validated experimentally. Hence, EHL temperatures were measured using thin film sensors for different bulk and coating materials on a twin-disk test rig. The measurements were analyzed by a thermal EHL (TEHL) simulation model. Simulated and measured EHL temperatures are in very good accordance and confirm the significance of thermal insulation effects.

中文翻译：

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通过薄膜传感器测量 EHL 温度 - 隔热效果

摘要 弹性流体动力润滑 (EHL) 接触的温度强烈影响流体摩擦。EHL 温度越高，有效润滑剂粘度越低，因此剪切应力越低。带有类金刚石碳 (DLC) 涂层的 EHL 触点显示出比没有 DLC 涂层的 EHL 触点更低的流体摩擦。显示了导致更高 EHL 温度的强烈隔热效果。这已被理论研究证实，但很少经过实验验证。因此，EHL 温度是在双盘测试台上使用薄膜传感器测量不同的体材料和涂层材料的。测量结果通过热 EHL (TEHL) 仿真模型进行分析。模拟和测量的 EHL 温度非常符合并证实了隔热效果的重要性。