A Research on the Filtration and Regeneration of Fuel Borne Catalyst Diesel Particulate Filter of Diesel Engine

Research on the PM filtration efficiency of a fuel borne catalyst regenerative type diesel particulate filter(FBC-DPF) is conducted,and the effectiveness of fuel borne catalyst(FBC) in a CA6DL1-28 diesel engine is studied.The back-pressure of DPF increases linearly along with accumulation of the particulate matter(PM).Addition of a fe-based fuel borne catalyst in diesel fuel can lower the temperature for soot combustion,and increase the storing capacity of the DPF and have regeneration ability.For the fresh DPF,operation for 19.5 h in certain condition leads to 10 kPa backpressure when using the diesel fuel,while using the FBC-added diesel fuel can extend to the period of 23.5 h.Regeneration time is largely shortened by using FBC-added diesel fuel at the exhaust temperature of 530 ℃ comparing with that of diesel fuel.After 500 h operation,it takes 18.5 h to get the backpressure of 15 kPa with diesel fuel and 23 h with FBC-added diesel fuel.Evaluating by ESC 13 procedures,the trapping efficiency of DPF in PM is over 80%,and PM emission is 0.017 g/(kW·h).No adverse impact on CO,HC,NOx emissions was observed with the DPF.