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Evaluation of the chemical stability of diesel oil with using Turbiscan Stability Index (TSI)

Bukrejewski Paweł, Jarczewski Zbigniew, Matuszewska Anna

Archiwum Motoryzacji

2020

Vol. 88, nr 2

5--18

For diesel oils containing fatty acid methyl esters (FAME), an important problem is their susceptibility to oxidation processes as this shortens the maximum storage time of such fuels and may result in deterioration of oil properties and thus affect the engine operation. One of the fuel ageing processes is the formation and release of resins from the fuel. The physical stability of mixtures may be evaluated by means of a physical stability index, determined with using a Turbiscan analyser [3, 19, 20]. The authors attempted to explore the possibility of using this index for evaluating the changes that take place during the ageing of diesel oil. Additionally, the impact of the presence of selected metals on the fuel ageing process was examined. Within the research, diesel oil samples containing various metals were prepared and subjected to the ageing process. Spectrophotometric tests were also carried out with using a Turbiscan instrument [4, 10, 11]. The samples were subjected to oxidation stability tests before and after the ageing process. The physical stability index and, additionally, the oxidation stability of the samples were examined by accelerated ageing methods.

Badanie stabilności mieszaniny eteru dietylowego i oleju rzepakowego

Górski K., Czerwonka D., Longwic R., Hernik A.

Autobusy : technika, eksploatacja, systemy transportowe

2017

R. 18, nr 12

135--139, CD

Artykuł zawiera wyniki badań dotyczące oceny kinetyki destabilizacji mieszanin paliwowych, które uzyskano dodając eter dietylowy (DEE) do oleju rzepakowego (OR). W szczególności badano próbki zawierające 10, 20, 30 i 40% (v/v) DEE w OR. W testach wykorzystano przyrząd pomiarowy Turbiscan Lab wyprodukowany przez firmę Formulaction Inc. Urządzenie pozwala określić stabilność mieszanin paliwowych na podstawie analizy wskaźnika TSI tj. Turbiscan Stability Index. Ocena wartości tego wskaźnika wyznaczona dla poszczególnych próbek paliwowych wskazuje, że były one tak samo stabilne w całej swojej objętości.

Paper presents results of fuel blends destabilization kinetic. Tested fuels were composed by blending of rapeseed oil (RO) with diethyl ether (DEE). In particular RO has addition of 10, 20, 30 and 40% by vol. of DEE. All necessary tests have been carried out using the Turbiscan Lab measurement equipment made by Formulaction Inc. Measurement system allows to describe stability of fuel blends on the base of Turbiscan Stability Index analysis. The assesement of this index calculated for all tested blends suggest that all of them were the same stable in a whole volume.