Terahertz Time Domain Spectroscopy to Detect Different Oxidation Levels of Diesel Engine Oil

Abdul-Munaim, Ali Mazin; Ornik, Jan; Koch, Martin; Watson, Dennis G.

doi:10.3390/lubricants7020018

Cited by 7 publications

(4 citation statements)

References 32 publications

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“…Employing THz sensing to detect oxidation products—carbonyl and hydroxyl compounds—in oils is an effective technique, because those compounds are strongly polar and therefore strongly THz absorbing, allowing detection at low concentrations. A number of studies have been performed demonstrating high sensitivity and good discrimination of such measurements (Figure 22) [159,160,161,162,163,164,165]. Contamination by water can also be a cause of oil degradation, especially in engine oils where water is a product of fuel burning, and where sensitive THz detection has been demonstrated [165,166].…”

Section: Petrochemicalsmentioning

confidence: 99%

Industrial Applications of Terahertz Sensing: State of Play

Naftaly

Vieweg

Deninger

2019

Sensors

248

106

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Section: Petrochemicalsmentioning

confidence: 99%

Industrial Applications of Terahertz Sensing: State of Play

Naftaly

Vieweg

Deninger

2019

Sensors

248

106

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show abstract

“…Engine oil oxidation causes increased acidity, viscosity, gums, and sludge formation, and the depletion of chemical additives during service leads to engine oil deterioration [3]. Additives contribute to the resistance to oxidative stress that produces increased engine oil acidity, and oxidation occurs due to the interaction of air with oil [4] and contaminants such as glycol that react with engine oil and oxidize engine oil [5,6]. However, using petroleum-derived oil base and refining additives in lubricants is linked to adverse effects on human health and the environment [7].…”

Section: Introductionmentioning

confidence: 99%

Refinement of Internal-Combustion Engine Oil Properties Via Magnetic Flux

Abed,

Hasan,

Abdul-Munaim

2024

IOP Conf. Ser.: Earth Environ. Sci.

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To verify the influence of magnetic flux on the characteristics of SAE 10W-30 gasoline engine oil when the engine oil is exposed to different magnetic fluxes 0, 6, 9, and 13 Volt. The following oil characteristics were measured: viscosity at 40 and 100 °C, and total acid number (TAN) mg KOH/g. The research was carried out in a completely randomized design with three replications for each treatment under the 5% probability level to compare the means of the treatments. The results of the experiment showed that there were significant differences in the studied properties when the engine oil was exposed to the above magnetic fluxes and, inversely, especially the magnetic flux of 13 Volt, which led to a decrease in the viscosity of the oils at 40 °C to 67.704 cSt and 14.1 cSt at 100 °C, in addition to a decrease in the total acid number to 2.1 mgKOH/g. The results of this study promise the possibility of the magnetic flux affecting changes in the properties of gasoline engine oil, which may contribute to improving the performance of engine oils during operation.

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“…22 The Terahertz Time Domain Spectroscopy method demonstrated an oxidation time measurement. 23 Previous research showed the possibility of using colour features to analyse particles for automated wear debris classification. 24 Published literature shows the use of an optical colour sensor with a blue LED as a light source and light-dependent resistor by infrared sensor setup 1 (LDR) or colour scale as per the ASTM D1500 standard for colour analysis.…”

Section: Introductionmentioning

confidence: 99%

Engine oil quality deterioration estimation using an integrated sensory system

Shinde

Bewoor

Kumar

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part E:

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Engine oil degradation impacts the operation and performance of an internal combustion engine. As a result, it is crucial to compare the degradation level of engine oils, with a particular emphasis on kinematic viscosity, oxidation, nitration, and critical oil testing characteristics. Suppose engine oil changes too soon without first calculating its remaining usable life. In that case, it wastes already scarce resources and has an unfavourable environmental influence. Engine performance may suffer if oil is changed too late and is of poor quality. In the current research, oil testing is performed on vehicles due to maintenance to find the best moment for changing engine oil. Oil samples were taken randomly from cars that came to an authorized service facility for maintenance, comprising a wide range from the first to the fifth servicing. Oil samples were initially evaluated in a laboratory using a viscometer and Fourier transform-infrared spectroscopy in conformity with industry standards. The samples were then evaluated using an integrated sensor system developed and built by the authors. The determination coefficient R2 = 0.97 showed a significant positive association between major engine oil degradation characteristics such as kinematic viscosity, oxidation, and nitration at reasonable sensitivity. Approximately 8% of the total gathered samples were useable. The research identifies several oil degradation sensor systems that give low-cost, on-site convenient options for oil condition monitoring and predicting the remaining usable life of engine oil.

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Terahertz Time Domain Spectroscopy to Detect Different Oxidation Levels of Diesel Engine Oil

Cited by 7 publications

References 32 publications

Industrial Applications of Terahertz Sensing: State of Play

Industrial Applications of Terahertz Sensing: State of Play

Refinement of Internal-Combustion Engine Oil Properties Via Magnetic Flux

Engine oil quality deterioration estimation using an integrated sensory system

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