柴油发动机故障诊断技术研究与应用
郑劲1,丁雪兴2
1.兰州石化职业技术学院,甘肃兰州 7300602.兰州理工大学石油化工学院,甘肃兰州 730050

摘要:应用振动法对柴油机气缸体上的振动信号进行分析,得出总振动量级主随活塞与气缸套磨损间隙的增大而逐级放大。根据气缸体振动加速度响应功率谱图和柴油发动机总振动量级,可以确定活塞与气缸壁的间隙大小。应用油样铁谱分析技术,可以确定发动机的润滑状况及摩擦副的磨损程度和部位,并通过实例证明了其在柴油发动机故障诊断中的有效性。应用直读式原子发射光谱仪对柴油发动机润滑油油样进行检测,监控柴油发动机曲轴滑动轴承磨损状况,对保障发动机可靠运行起到很好的作用。

关键词:柴油发动机;故障诊断;振动法油样铁谱分析法光谱分析
中图分类号U472.9         文献标识码A            文章编号10060316 (2012) 06006704
Study and application of diagnostic method to diesel engine fault analysis
ZHENG Jing1DING Xue-xing2
(1.Lanzhou Petrochemical college of Vocational Technology, Lanzhou 730060,China;
2.College of Petrochemical Engineer, Lanzhou University of Technology, Lanzhou 730050,China )

 AbstractTheapplication of vibration method to analyzing diesel engine cylinder block vibration signal resulted in the progressive increase of the general vibration magnitude mainly along the piston and cylinder sleeve. According to the cylinder body vibration acceleration power spectrum and total diesel engine vibration magnitude, the gap between the piston and the cylinder wall can then be determined. It is found that the application of oil sample iron spectral analysis method can determine and the status of engine's lubrication and the location and wear extent of the engine, and hence demonstrates through examples the effctiveness of applying oil sample iron spectrum analysis to diesel engine fault diagnosis. The author points out further in this paper that the application of direct reading atomic emission spectrometer to diesel engine lubricating oil samples for testing, monitoring wear condition of bearing in diesel engine crankshaft plays a significant role in ensuring a reliable engine performance.

Key wordsdiesel enginesfault diagnosisvibration methodsample oil iron spectrum analysis methodspectroscopy of liquid lubricants


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收稿日期:2011-12-04
作者简介:郑劲(1959-),浙江平阳人,学士,主要研究方向为汽车故障诊断与检测。

 

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