This paper is focused on the effects of the textured surface along with lubricant feed pressure and temperature variation to calculate the lubrication characteristics (viscosity and density) of the main bearings in internal combustion engines. In a three-dimensional numerical analysis simulation, a thermohydrodynamic model was developed, which considered the thermal effects of the fluid–solid interface components. In the analysis, the viscosity–temperature equation was used at different lubricant feed pressures and temperatures. By using color image segmentation methods, the density and viscosity contour on the two rotating walls (shaft and bearing wall) in the cavitation regions were quantitatively and qualitatively compared. The textured surface and lubricant feed pressure had significant effects on reducing the cavitation region over the shaft and bearing surface. Compared with the untextured bearing, the presence of texture over the bearing surface in the same temperature and pressure conditions increased the amount of total heat transfer to the lubricant fluid in the range of the maximum value of 73% and minimum value of 11%. Promoting the average heat transfer coefficient was a factor in reducing thermal stresses and high-temperature points in the rigid parts of the bearing system.

本文着眼于纹理表面的影响以及润滑剂进料压力和温度变化，以计算内燃机主轴承的润滑特性（粘度和密度）。在三维数值分析模拟中，开发了一个热流体动力学模型，该模型考虑了流固界面成分的热效应。在分析中，在不同的润滑剂进料压力和温度下使用了粘度-温度方程。通过使用彩色图像分割方法，对空化区域中两个旋转壁（轴和轴承壁）上的密度和粘度轮廓进行了定量和定性的比较。纹理表面和润滑剂进料压力对减少轴和轴承表面上的气穴区域具有重大影响。与无纹理的轴承相比，在相同的温度和压力条件下，轴承表面上的纹理的存在增加了向润滑油中传递的总热量，最大值为73％，最小值为11％。促进平均传热系数是减少轴承系统刚性部件中的热应力和高温点的一个因素。