Screening vegetable oil alcohol esters as fuel lubricity enhancers |
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Authors: | D C Drown K Harper E Frame |
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Affiliation: | (1) Department of Chemical Engineering, University of Idaho, 83844-1021 Moscow, Idaho;(2) U.S. Army Tank-Automotive Research, Development, and Engineering Center Fuels and Lubricants Research Facility, (Southwest Research Institute), 78228-0510 San Antonio, Texas |
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Abstract: | Methyl and ethyl monoalkyl esters of various vegetable oils were produced for determining the effects of type of alcohol and
fatty acid profile of the vegetable oil on the lubricity of the ester. Four methyl esters and six ethyl esters were analyzed
for wear properties using the American Society for Testing and Materials method D 6079, Evaluating Lubricity of Diesel Fuels
by the High-Frequency Reciprocating Rig. Ethyl esters showed noticeable improvement compared to methyl esters in the wear
properties of each ester tested. No correlation was found between lubricity improvement and fatty acid profile of the ester,
except that esters of castor oil had improved lubricity over other oils with similar carbon chain-length (C18) fatty acids. |
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Keywords: | Biodiesel fuel engine wear fatty acid lubricity monoalkyl esters vegetable oil |
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