ASSESSMENT OF LUBRICITY OF MIXTURES OF FATTY ACID METHYL ESTERS DERIVED FROM VEGETABLE OILS IN FUEL OIL
Journal Title: Tribologia - Year 2009, Vol 226, Issue 4
Abstract
The results presented are a part of the research program aimed at the optimisation of diesel fuel containing fatty acid methyl esters (FAME) derived from vegetable oils. The esters could be applied as an ecological fuel for diesel engines. FAME solutions were proposed as additives modifying the lubricity of diesel fuel. For the bio-diesels selected, tribological tests using high frequency reciprocating ring ball-on-flat apparatus were performed. The tests were carried out for steel-steel and concentrated contact. The tribological properties are described as motion resistance and the level of coverage by the lubricating film. The purpose of the research was to determine the correlation between the friction characteristics measured and the content of bio-additives in diesel fuel. It was proved that, at 10% content of the mixtures, the friction coefficient was reduced by 20% and wear was reduced 2-fold, as compared to diesel oil. This can be a result of an increase of the durability of the lubricating film.<br/><br/>
Authors and Affiliations
Marian W. Sułek, Andrzej Kulczycki, Anna Małysa
Keywords
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