Abstract： For coalbased highcetane fuel FT diesel, the exhaust gas recycle(EGR)was installed on nonroad diesel engine to investigate the combustion and emission characteristics of FT diesel fuel at different EGR rates. The results show that the introduction of EGR can result in the extension of delay period and the shift of combustion center of gravity, and the maximum burst pressure, the peak instantaneous heat release rate and the average combustion temperature in cylinder are all decreased. Compared with no introduction of EGR, when the EGR rate is 15％, NOx is decreased significantly, while combustion parameters, HC and CO change slightly. When the EGR rate reaches 30％, the combustion center of gravity significantly shifts back, and the maximum reduction of NOx is 61.6％. The increment rates of HC and CO are 13.2％ and 13.3％, respectively. The particle size distribution of FT diesel in singlecylinder machine is followed logarithmic normal distribution. With the increasing of EGR rate, the peak particle size is decreased, and the particles are transformed into small particles at low load. The peak particle size is increased, and the particles are converted to largesized particles at high load.
王忠, 杨家翚, 刘帅, 李瑞娜. 王忠, 杨家翚, 刘帅, 李瑞娜[J]. 江苏大学学报（自然科学版）, 2019, 40(4): 373-379.
WANG Zhong, YANG Jia-Hui, LIU Shuai, LI Rui-Na. Combustion and emission characteristics of FT
diesel fuel in exhaust gas atmosphere[J]. Journal of Jiangsu University(Natural Science Eidtion)
, 2019, 40(4): 373-379.
2019, Vol. 40 
