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为排除某型航空发动机滑油泵在使用1个发动机寿命期后流量不合格的故障,根据滑油泵工作原理,分析了滑油温度和滑油泵间隙(端面间隙、凸台间隙和径向间隙)等因素对其流量的影响。结果表明,温度对滑油泵流量性能影响较大,其影响主要是在滑油温度改变后,端面、凸台和径向间隙泄漏量变化而产生的;滑油泵端面间隙对流量的影响较大,端面间隙缩小0.01 mm,流量可以提高1 L/min左右,将滑油泵凸台间隙调整至-0.01～0.01 mm和0～0.02 mm区间,流量可提高2～3 L/min。通过试验验证给出了提高滑油泵流量的措施,从而排除了多台某型发动机滑油泵流量不合格故障。
In order to eliminate the failure of a certain type of aeroengine oil pump after using one engine for the life of the engine, according to the working principle of the oil pump, the lubricating oil temperature and the lubricating oil pump clearance (end clearance, boss clearance and radial clearance) are analyzed The impact of factors on its flow. The results show that the temperature has a great influence on the flow performance of the oil pump. The main effect is the change of the leakage of the end face, the boss and the radial clearance after the temperature of the oil changes. The clearance of the oil pump has a great influence on the flow rate, The clearance between the end face is reduced by 0.01 mm and the flow rate can be increased by about 1 L / min. The clearance between the oil pump bosses is adjusted to -0.01 to 0.01 mm and 0 to 0.02 mm, and the flow rate can be increased by 2 to 3 L / min. The measures to improve the flow rate of the oil pump are given through the experimental verification, thus eliminating the failure of the flow rate of the oil pump of a certain type of engine.