蜡烛
材料科学
润滑油
航空
烟灰
振动
锂(药物)
机械工程
汽车工程
复合材料
法律工程学
燃烧
航空航天工程
工程类
声学
电气工程
医学
化学
物理
有机化学
内分泌学
作者
Kangshuai Li,Yanbin Zhang,Wei Tan,Jiwen Wang,Zehua Xu,Zhanjun Li,Qiang He
出处
期刊:Wear
[Elsevier]
日期:2024-07-01
卷期号:550-551: 205401-205401
标识
DOI:10.1016/j.wear.2024.205401
摘要
The prolonged operation of the motor in the all-electric aircraft can cause the fragmentation and shortening of grease thickener fibers, ultimately resulting in the lubricating grease becoming ineffective. In order to avoid grease failure causing motor winding burnout, this paper uses a four-ball friction testing machine to test the tribological properties of six composite greases containing candle soot with different concentrations, and analyzes the changes in friction coefficient and wear diameter. In addition, by building a test platform for motor vibration and noise, this paper studies the influence of lithium complex grease on vibration and noise characteristics of aviation electrical machine at different propeller speeds. The results show that the addition of 0.04wt% candle soot lithium grease has the best tribological properties and vibration inhibition properties, because the candle soot in the oil film changes the sliding friction into rolling friction in the contact area of some friction pair. The temperature rise test of aviation electrical machine shows that the lithium complex grease plays an active role in the heat dissipation performance of the high-speed rotating motor.
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