航空燃油柱塞泵滑靴静压润滑油膜计算分析

滑靴与斜盘是一对重要的摩擦副,滑靴与斜盘之间的油膜润滑性能对燃油柱塞泵的使用寿命有很大影响.通过数值计算,得到了排油区滑靴油膜厚度与转子转角、斜盘倾角、油池压力、柱塞压紧力之间的变化规律,建立油膜厚度变化的微分方程,给出在吸、排油一个周期内,滑靴油膜厚度的动态变化规律.利用油膜计算方法,可以分析滑靴运动一周,滑靴与斜盘间的油膜润滑状态,从而为合理设计航空燃油柱塞泵滑靴与斜盘摩擦副提供理论依据. 

Calculation and analysis on film thickness of the slippers based on hydrostatic bearing in the aeronautical fuel piston pump

The friction pair between swash plate and slipper is very important in the aeronautical fuel piston pump, and it has a great effect on the life of the piston pump. Variation laws of the film thickness with rotor angle, angle of swash plate, pocket pressure and pressing force were obtained. The differential equations of the variation of the film thickness were established, hence the dynamic law of the film thickness in one period was further obtained. By the calculation method of the film thickness, the lubrication condition in one period between swash plate and slipper can be obtained, hence it gives a theories basis for the design of the slippers in aeronautical fuel piston pump.