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1、序言 理想的滑动轴承设计中,相对运动的表面之间隔着一层油膜,使它们彼此分离。选择轴承合金,一般只看它们通过油膜所能承受负荷的能力和对油的化学腐蚀的抵抗能力。遗憾的是这样的工作情况是不多的,在大多数情况下,还应该考虑到相对运动的表面之间,总有某种程度的直接接触。 从图1上可以看出,在混合油膜或界面润滑方式中,滑动轴承和轴之间的摩擦,会随着轴承的设计参数ZN/P的减少而迅速地增加(Z=油的粘度,N=转速,P=压力)。 一般来说,内燃机的曲轴轴承,由于转速较高,与图1的右边部分相一致。但是,在负荷循环的某些部分,油膜可能变得非常薄。在这样的情况下,由曲轴或连杆的弯曲
1, preface The ideal sliding bearing design, the relative motion of the surface of the oil film between the layers, so that they separated from each other. Select bearing alloy, generally only look at them through the oil film can withstand the load capacity and resistance to chemical corrosion of oil. Unfortunately, such work is modest and, in most cases, it should be taken into account that there is always some direct contact between the surfaces of the relative motions. From Figure 1, it can be seen that in the hybrid oil film or interfacial lubrication, the friction between the plain bearing and the shaft rapidly increases as the bearing design parameter ZN / P decreases (Z = oil viscosity, N = Speed, P = pressure). In general, crankshaft bearings for internal combustion engines, due to the higher speed, correspond to the right part of FIG. 1. However, in some parts of the load cycle, the oil film can become very thin. In this case, the crankshaft or connecting rod is bent