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INFULENCE OF BIODIESEL ON THE OXIDATION STABILITY OF ENGINE OILS
Omer Kovač
; Rafinerija ulja Modriča, Vojvode Stepe Stepanovića 49, 74480 Modriča, Bosna i Hercegovina
Vesna Sarvan
; Rafinerija ulja Modriča, Vojvode Stepe Stepanovića 49, 74480 Modriča, Bosna i Hercegovina
Danka Šikuljak
; Rafinerija ulja Modriča, Vojvode Stepe Stepanovića 49, 74480 Modriča, Bosna i Hercegovina
Sažetak
In order to replace the fossil fuels in developed Western countries are performing significant researches on the introduction of renewable fuels. Today, the highest usage have biodiesel and bioethanol. The most commonly used are mono-alkyl esters of different fatty acids, which are obtained from different types of natural oils and fats. Application of biodiesel have already reached significant level. The most of technical problems associated with his application have already been solved. However, in biodiesel application, there remain a number of failures. One of the main technical problem that appears when using biodiesel is his tendency to oxidation which results in a formation of acid products, products of polymerization, insoluble residues and sediments which leads to filter clogging and poorer lubrication. In addition, during operation, the small amount of fuel reaches in the sump and considering that biodiesel compared to conventional diesel has a significant higher boiling point, it comes to his accumulation, which leads to accelerated degradation of oil, with potential impact on engine durability. In this paper is investigated the impact of biodiesel on the oxidative stability of motor oils. For evaluation of oxidative stability of oil caused by the presence of biodiesel are used two test methods IP 48 and ASTM D 2272. The results of using these methods showed a negative influence of biodiesel on oxidative stability of selected motor oils.
Ključne riječi
biodiesel; oxidation stability; motor oil
Hrčak ID:
110646
URI
Datum izdavanja:
7.10.2013.
Posjeta: 1.986 *