Experimental Analysis of Response Resource of Motor Oil of Diesel Engines by Means of High-Resolution NMR Spectroscopy
V. V. KORYAKINA1, E. YU. SHITS1 and I. I. SEDALISHCHEV2
1Institute for Petroleum and Gas Problems, Siberian Branch of the Russian Academy of Sciences, Ul. Oktyabrskaya 1, Yakutsk 677891 (Russia)
2PC Almazy Anabara OJSC, Ul Chernyshevskogo 6, Yakutsk 677000 (Russia)
Keywords: motor oil, NMR spectroscopy, phosphorus–containing additives, zinc diorganodithiophosphate
Abstract
Results of integrated high-resolution NMR studies of operating changes of motor oil of Texaso Company (the USA) for diesel engines of automobiles are presented. It is shown that a number of the chemical characteristics of oil change during operation: the degree of aromaticity, the ratio of methyl to methylene group content, content of phosphorus–containing additives. Qualitative and quantitative analysis of phosphorus–containing additives was carried out, the adaptation mechanism of the response of oil additive was revealed. The promising character of the use of NMR spectroscopy in monitoring-based analysis of motor oil was demonstrated.
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