中文摘要：

分析比较了2，5-二甲基呋喃（DMF）与商用汽油的理化性能，研究结果表明，DMF的一些理化性能与汽油很接近。在1台单缸四行程汽油机上对DMF、汽油-DMF混合燃料以及汽油进行了试验研究，结果表明：在不改变汽油机点火提前角特性和供油系统规律的试验条件下，燃用DMF的动力性稍差于汽油，最大功率下降了10．5％，最大扭矩下降了2．3％；燃用DMF的燃油消耗率稍高于汽油，平均上升了18．6％；燃用DMF的HC和C0排放远远低于汽油，分别比汽油平均下降了31．9％和95．5％，但N0。和c02排放则明显增加，分别比汽油平均上升了97．1％和28．1％；燃用DMF10和DMF30混合燃料的动力性能以及排放特性一般都是介于DMF和汽油之间。

英文摘要：

A The physicochemical properties of 2,5-dimethylfuran （DMF） and commercial gasoline were compared. The result shows that some physicochemical properties of DMF are similar to those of gasoline. Under the conditions of unchanging igni- tion advance angle and fuel supply system, DMF, gasoline-DMF blends and gasoline were researched on a single cylinder 4- stroke gasoline engine. The results show that the power performance of DMF is slightly inferior to gasoline and that the maxi- mum power and maximum torque decrease by 10.5% and 2.3% respectively. The fuel consumption rate of DMF is slightly higher than that of gasoline and increases by 18.6% on average. The HC and CO emissions of DMF are lower than that of gas- oline and respectively decrease by 31.9% and 95.5% on average, but the NOx and CO2 emission obviously increase and respec- tively increase by 97.1% and 28.1%. The power and emission performance of gasoline-DMF blends with DMF10 and DMF30 respectively are between those of DMF and gasoline.