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石油燃料的价格和可利用性的最新趋势促使工程师们去改进柴油机燃料的效率。因此,发动机轴承应该设计成不仅有适当的承载能力,还应具有最小的摩擦损失和润滑流量损失。本文基于稳定状态的润滑理论和有限元法分析了影响摩擦和滑油流量的因素。其分析结果表明:摩擦和滑油流量取决于基本的几何特性、发动机的制动平均有效压力和额定转速,并与油孔和油槽的形式和位置有关,滑油的压力和粘度对其也有影响,而诸如凸起、轴的锥度等加工偏差却对其影响不大。同时也表明:轴承中最终的油温升高不是供给压力的简单函数,而与几何特性、工作条件及制造条件有关。只有考虑了全部因素之后,才能使轴承承载能力、摩擦和流量的损失最优化。
Recent trends in the price and availability of petroleum fuels have prompted engineers to improve the efficiency of diesel fuels. Therefore, the engine bearing should be designed not only with adequate load carrying capacity, but also with minimal friction loss and loss of lubrication flow. In this paper, based on the steady state lubrication theory and finite element method, the factors affecting the friction and oil flow rate are analyzed. The analysis results show that the friction and oil flow rate depend on the basic geometrical characteristics, the average brake effective pressure and the rated speed of the engine, and are related to the form and position of the oil hole and the oil groove. The pressure and viscosity of the oil also affect it , While such as convex, shaft taper machining errors have little effect on it. It also shows that the ultimate increase in oil temperature in bearings is not a simple function of supply pressure, but is related to geometry, working conditions and manufacturing conditions. Only after all the factors have been taken into account can the bearing capacity, friction and flow losses be optimized.