The domestic 0# diesel

F-T diesel and three fuels of different ratios of F-T diesel / methanol micro-emulsified fuel(referred to as FT micro-emulsified fuel) were experimented on a supercharged diesel engine without any adjustment of engine structure and parameters to analyze the combustion and emission characteristics. Results show that the cylinder pressure and the peak of heat release rate with FT micro-emulsified fuels operation are lower than with 0# diesel operation. The use of FT micro-emulsified fuels can effectively reduce the conventional emission of CO

NOx and soot with a average reduction of 20%～40%、 25%～27% and 65%～97% respectively. In the unconventional emissions

unburned methanol emission increases with the increase of the proportions of methanol in the fuel

and decreases with the increase of load; formaldehyde emission is higher than with 0# diesel operation

and the change of trend with load is the same as that of unburned methanol but does not have a linear relationship with the methanol content in the fuel.