Study on the Mechanism of the Diesel Fuel Lubricity

The relationship of diesel fuel lubricity and the results of conventional chemical analysis and mass spectrometry analysis were concluded and summarized,and the mechanism of the diesel fuel lubricity was explored,by using the large amount of data accumulated for 10 years in the working of researching and evaluating diesel fuel lubricity by the author.Results show that the desulfurization process has good relativity with diesel fuel lubricity.Wear is not sensitive to the amount of Sulfur contained in material.The higher amount of Nitrogen contained in diesel fuel,the better the lubricity.The bigger viscosity and density of diesel fuel,the better the lubricity.The higher temperature of distilled point,the better the lubricity of the distillate.Alkane and cycloalkane in saturated hydrocarbon have negative effect on lubricity,but non-saturated hydrocarbon contributes to lubricity.Among composition of fragrant hydrocarbon,polycyclic aromatic hydrocarbon than monocyclic aromatic hydrocarbon has greater contribution at improving lubricity.