Study on emission and particulate matter characteristics from diesel engine fueled with n-pentanol/Fischer–Tropsch diesel

Abstract

N-pentanol has become one of the hotspots of mixed fuel research due to its renewability and good combustion and emission performance. Some valuable advances have been made in the study of burning Fischer–Tropsch diesel in engines. However, research on n-pentanol/Fischer-Tropsch diesel fuel blends has rarely been reported. Therefore, in the current work, an experimental study was carried out on a single-cylinder engine and diesel, Fischer–Tropsch diesel and n-pentanol/Fischer–Tropsch diesel were investigated at different load ratios (10%, 25%, 50%, 75%, 100%), the difference in emission characteristics and particle properties at n-pentanol ratio (5%, 10%, 20%), rotation speed (2700 r/min, 3600 r/min) was analyzed. The results show that CO, HC, NOX and soot of Fischer–Tropsch diesel are lower than that of diesel and CO and HC increased while NOX, and soot reduced with the addition of n-pentanol. The arrangement between Fischer–Tropsch diesel particles is tighter than that of diesel. This phenomenon is more pronounced with the addition of n-pentanol. Fischer–Tropsch diesel has the highest degree of graphitization and decreases with the addition of n-pentanol. The C-OH, C = O, and sp3/sp2 of Fischer–Tropsch diesel are relatively low, with the addition of n-pentanol, C-OH, C = O, and sp3/sp2 of the particle surface increased. The soot particles of the blended fuel are more orderly than diesel.