癸酸甲酯／醇类混合燃料以及乙醇燃料自点火试验

Autoignition of Methyl Decanoate/Alcolol and Ethanol

研究了发动机工作条件下,癸酸甲酯和乙醇燃料以及癸酸甲酯和正丁醇混合燃料的自点火特性.在加热激波管中,利用反射激波后的试验区域研究了混合燃料的点火延时.混合燃料是体积比为90%癸酸甲酯/10%乙醇燃料、50%癸酸甲酯/50%乙醇燃料和90%癸酸甲酯/10%正丁醇的混合物.在2MPa下,研究了当量比对点火延时的影响,同时考察了癸酸甲酯中醇类的添加体积混合比和醇的种类对点火延时的影响,进一步研究了乙醇燃料在不同当量比下的点火延时.

The autoignition of methyl decanoate /ethanol and methyl decanoate/n-butanol was studied under engine operating conditions. The ignition delays were measured in reflected-shock experiments at 20 bar usinga heated shock tube. The mixtures are 90%methyldecanoate/10% ethanol by the volume ratio, 50% methyl decanoate/50% ethanol and 90% methyl decanoate/10% n-butanol. The ignition delays of different mixtures were studied at different equivalence ratios. With the same alcohol added, the ignition delays of different volume mixing ratios of the fuels were compared. And at the same mixing volume ratio condition, the ignition delays of different types of alcohols were also compared. Further, ethanol fuel was studied at different equivalence ratios.