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THz-TDS for Detecting Glycol Contamination in Engine Oil
Applied Sciences ( IF 2.838 ) Pub Date : 2020-05-28 , DOI: 10.3390/app10113738 Oday M. Abdulmunem , Ali Mazin Abdul-Munaim , Mario Mendez Aller , Sascha Preu , Dennis G. Watson
Applied Sciences ( IF 2.838 ) Pub Date : 2020-05-28 , DOI: 10.3390/app10113738 Oday M. Abdulmunem , Ali Mazin Abdul-Munaim , Mario Mendez Aller , Sascha Preu , Dennis G. Watson
There continues to be a need for an in-situ sensor system to monitor the engine oil of internal combustion engines. Engine oil needs to be monitored for contaminants and depletion of additives. While various sensor systems have been designed and evaluated, there is still a need to develop and evaluate new sensing technologies. This study evaluated Terahertz time-domain spectroscopy (THz-TDS) for the identification and estimation of the glycol contamination of automotive engine oil. Glycol contamination is a result of a gasket or seal leak allowing coolant to enter an engine and mix with the engine oil. An engine oil intended for use in both diesel and gasoline engines was obtained. Fresh engine oil samples were contaminated with four levels of glycol (0 ppm, 150 ppm, 300 ppm, and 500 ppm). The samples were analyzed with THz-TDS and converted to frequency domain parameters of refractive index and absorption coefficient. While both parameters showed potential, the absorption coefficient had the best potential and was able to statistically discriminate among the four contamination levels.
中文翻译:
THz-TDS用于检测机油中的乙二醇污染
仍然需要用于监测内燃机的机油的原位传感器系统。需要监控机油中的污染物和添加剂的消耗。尽管已经设计和评估了各种传感器系统,但是仍然需要开发和评估新的传感技术。这项研究评估了太赫兹时域光谱(THz-TDS),以鉴定和评估汽车发动机油中的乙二醇污染。乙二醇污染是由于垫圈或密封泄漏导致冷却液进入发动机并与发动机机油混合而造成的。获得了打算用于柴油和汽油发动机的发动机油。新鲜的机油样品被四种乙二醇(0 ppm,150 ppm,300 ppm和500 ppm)污染。用THz-TDS分析样品,并将其转换为折射率和吸收系数的频域参数。尽管两个参数都显示出潜力,但吸收系数具有最佳潜力,并且能够在统计学上区分这四个污染水平。
更新日期:2020-05-28
中文翻译:
THz-TDS用于检测机油中的乙二醇污染
仍然需要用于监测内燃机的机油的原位传感器系统。需要监控机油中的污染物和添加剂的消耗。尽管已经设计和评估了各种传感器系统,但是仍然需要开发和评估新的传感技术。这项研究评估了太赫兹时域光谱(THz-TDS),以鉴定和评估汽车发动机油中的乙二醇污染。乙二醇污染是由于垫圈或密封泄漏导致冷却液进入发动机并与发动机机油混合而造成的。获得了打算用于柴油和汽油发动机的发动机油。新鲜的机油样品被四种乙二醇(0 ppm,150 ppm,300 ppm和500 ppm)污染。用THz-TDS分析样品,并将其转换为折射率和吸收系数的频域参数。尽管两个参数都显示出潜力,但吸收系数具有最佳潜力,并且能够在统计学上区分这四个污染水平。