Abstract
In order to investigate the influence of fatty acid methyl ester (FAME) on oxidative deterioration behavior of biodiesel mixed diesel fuel, FAME/tetradecane mixtures were prepared as model biodiesel/diesel mixtures and their oxidation tests were carried out. The mixed fuel containing FAME with more than two double bonds formed large amount of acid by the oxidation. The mixture containing methyl linolenate formed sludge and its acid value was high. The sulfur compound in the mixed fuel was oxidized and most of them were contained in the sludge.