THz-TDS for Detecting Glycol Contamination in Engine Oil
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 evalua...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-05-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/11/3738 |
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| author | Oday M. Abdulmunem Ali Mazin Abdul-Munaim Mario Mendez Aller Sascha Preu Dennis G. Watson |
| author_facet | Oday M. Abdulmunem Ali Mazin Abdul-Munaim Mario Mendez Aller Sascha Preu Dennis G. Watson |
| author_sort | Oday M. Abdulmunem |
| collection | DOAJ |
| description | 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. |
| first_indexed | 2024-03-10T19:32:43Z |
| format | Article |
| id | doaj.art-75026275dd814764a09f6dd523c21bff |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T19:32:43Z |
| publishDate | 2020-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-75026275dd814764a09f6dd523c21bff2023-11-20T02:01:07ZengMDPI AGApplied Sciences2076-34172020-05-011011373810.3390/app10113738THz-TDS for Detecting Glycol Contamination in Engine OilOday M. Abdulmunem0Ali Mazin Abdul-Munaim1Mario Mendez Aller2Sascha Preu3Dennis G. Watson4Department of Physics, College of Science, Mustansiriyah University, Baghdad 10071, IraqDepartment of Agricultural Machines and Equipment, College of Agricultural Engineering Sciences, University of Baghdad, Baghdad 10071, IraqTerahertz Devices and Systems, Technical University of Darmstadt, 64283 Darmstadt, GermanyTerahertz Devices and Systems, Technical University of Darmstadt, 64283 Darmstadt, GermanyAgricultural Systems, College of Agricultural Sciences, Southern Illinois University, Carbondale, IL 62901, USAThere 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.https://www.mdpi.com/2076-3417/10/11/3738terahertztime-domain spectroscopyengine oilglycol |
| spellingShingle | Oday M. Abdulmunem Ali Mazin Abdul-Munaim Mario Mendez Aller Sascha Preu Dennis G. Watson THz-TDS for Detecting Glycol Contamination in Engine Oil Applied Sciences terahertz time-domain spectroscopy engine oil glycol |
| title | THz-TDS for Detecting Glycol Contamination in Engine Oil |
| title_full | THz-TDS for Detecting Glycol Contamination in Engine Oil |
| title_fullStr | THz-TDS for Detecting Glycol Contamination in Engine Oil |
| title_full_unstemmed | THz-TDS for Detecting Glycol Contamination in Engine Oil |
| title_short | THz-TDS for Detecting Glycol Contamination in Engine Oil |
| title_sort | thz tds for detecting glycol contamination in engine oil |
| topic | terahertz time-domain spectroscopy engine oil glycol |
| url | https://www.mdpi.com/2076-3417/10/11/3738 |
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