alexa The Influence Of The Chemical Structure Of Synthetic Hydrocarbons And Alcohols On The Tribological Properties Of Diesel And Jet Fuels
ISSN: 2169-0022

Journal of Material Sciences & Engineering
Open Access

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2nd International Conference and Exhibition on Materials Science and Chemistry
July 13-14, 2017 Berlin, Germany

Andrzej Kluczycki, Wojciech Dziegielewski, Monika Madej and Dariusz Ozimina
Air Force Institute of Technology, Poland
Kielce University of Technology, Poland
Posters & Accepted Abstracts: J Material Sci Eng
DOI: 10.4172/2169-0022-C1-074
Abstract
The aim of this paper is to present the latest tribological data concerning the mechanism of protective film formation by fuels containing synthetic hydrocarbons and alcohols. The fuels were tested using HFRR and BOCLE methods. The criterion for fuel lubricity in the HFRR and BOCLE tests was the ball wear. The HFRR tester was also capable of measuring the film thickness. The analyzed fuels for diesel and turbine engines consisted of mineral fuel and three series of synthetic compounds, i.e., paraffinic hydrocarbons with an even number of carbon atoms in the chain, paraffinic hydrocarbons with an odd number of carbon atoms and isomers of butanol. The synthetic compounds were added to the mineral fuel at a concentration of 0-20% (v/v). All the fuels tested contained commercially available lubricating additives (carboxylic acids). The addition of the synthetic compounds to the mineral fuel had two effects: diluting the lubricating additives and changing the intermolecular interactions of the base fuel (with no additive). Both effects were considered while analyzing the test results. The experimental data were studied taking into account the conclusions drawn from the αi model described by Kajdas, Kulczycki and Ozimina. The analysis revealed that the liquid phase i.e., the protective film should consist of agglomerates or clusters of hydrocarbon molecules, which are responsible for the transfer of energy in the form of electrons triboemitted from a metal surface to the molecules of the lubricating additives. The proposed mechanism can explain the influence of the base fuel on the effectiveness of the lubricating additives.
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