【摘要】 为进一步提高湿式离合器的润滑与冷却效率,通过改变通油孔的布置方式,在原有离合器油路结构的基础上设计了其他3种油路结构,采用VOF方法对油路气液两相动态特性进行CFD数值模拟,研究不同油路结构对润滑油流速分配、摩擦间隙充油效率以及排油效率的影响,并筛选出最优结构.原有润滑油路内存在涡流,导致润滑油流速分配不均匀,摩擦间隙充油效果相对较差.通过布置通油孔避免了涡流的产生,使润滑油流速分配均匀,但存在润滑油对流现象,导致部分摩擦间隙达不到较好的充油效果,其中V字形油路结构在润滑油流速分配、摩擦间隙充油效果以及润滑油循环方面优于其他结构,有助于提高离合器润滑与冷却效率,减少离合器发热,提高离合器的使用寿命.更多还原

【Abstract】 Three new oil passage structures were designed to improve the lubricating and cooling efficiency based on the original one.Gas-liquid phase dynamic characteristics of oil passage were solved by VOF(volume of fluid) method in order to study the effects of lubricant flow rate distribution,oil filling efficiency and oil discharge rate of different oil passage structures.The results showed that the eddy can be avoided by arranging the oil passage holes,and these holes can promote the uniform distribution of the oil flow rate.Among them,the V-shaped oil passage structure was superior to other structures in the aspects such as the distribution of oil flow rate,the overall oil filling efficiency of the friction gaps and the circulation rate of the lubricating oil,which is helpful to improve the lubricating and cooling efficiency,reduce the heat generation,and extend the service life of wet clutch.更多还原