An experiment of the effect of different fuels on engine performance and emissions was carried out on a gasoline direct injection(GDI) passenger car. The fuels used in the experiment were pure gasoline and four oxygenated gasoline fuels prepared by adding methanol

ethanol

n-butyl alcohol and 2

5dimethylfuran(DMF) in the pure gasoline respectively in 10% in volume

and coded as G100

M10

E10

B10 and F10. The results show that under new European driving cycle(NEDC)

B10 is the lowest among the five tested fuels in terms of 100 kilometer of fuel consumption in volume and the equivalent fuel consumption after removing calorific value

and the other three oxygenated fuels are higher than G100. CO and THC emissions of the oxygenated fuels are higher than those of G100

except for the CO of M10 which is lower than that of G100. Adding methanol

ethanol or n-butyl alcohol in pure gasoline is beneficial to reducing NOx emissions

but the NOx emissions of F10 are almost equivalent to those of G100. The oxygenated fuels could significantly reduce the particulate mass(PM) and particulate number(PN). And all the oxygenated fuels can decrease fuel consumption and emissions when the car runs steadily at medium and high speeds

but they are poor at adapting to the working conditions of low speed and vehicle starting. They all could

however

shorten the vehicle acceleration time.