Abstract: In order to meet the emission regulations, the diesel particulate filter(DPF)is a promising solution,which can trap more than 90% Particulate Matter(PM) from the exhaust gas.As an effective way of reducing the diesel particulates, DPF has already been developed and manufactured in foreign diesel engine market.Fuel borne catalyst(FBC) additive makes particulates deposite inside the porous wall regenerated by the active metal component in fuel, which can reduce the particulate ignition temperature, and also the peak temperature of the regeneration process.A fundamental study on catalytic regeneration progress of FBC additives within DPF is performed, which has the important theory signification and engineering value.The naphthenic acid cerium is selected as fuel borne catalyst(FBC)additive, and the influences of these test fuels on regeneration characteristic of a fuel borne catalyst with regenerative type of diesel particulate filter (FBC-DPF), have been investigated.The experimental engine is a 186FA diesel engine, and the study DPF is a honeycomb ceramic filter matching electrical heating regeneration system.The DPF collection and regeneration experiment is conducted in the condition that the diesel engine speed is 2800 r/min, the mean indicated pressure is 0.46MPa, and DPF inlet temperature is 510℃.The experiment includes four parts: regeneration balance temperature of DPF(when trapping efficiency and combustion rate of PM in DPF are identical, and pressure drop of DPF remains stable.At this time the inlet temperature of DPF is called regeneration balance temperature of DPF.), pressure drop characteristics, PM loading characteristics and filtration efficiency of DPF.Then the DPF regeneration strategy was studied and developed, which contained 3 parts: DPF regeneration timing, temperature rising strategy and DPF regeneration process control.The results showed that adoption the method of fuel additives can obviously decrease DPF regeneration temperature.In the low load condition, no additives DPF couldn′t achieve regeneration, while under the same condition with additives, DPF regeneration at 450℃ has already begun.The fuel specific consumption rises with increase of exhaust back pressure.When the exhaust back pressure increases from 0 to 14 kPa, the fuel specific consumption rises by 4.7%.The back pressure of FBC-DPF increases linearly along with accumulation of the PM compared with diesel fuel.On the previous experiment condition, when using the pure diesel, pressure drop of DPF increasing to 14 kPa needs 1170 minutes.While using the FBC-added diesel fuel, pressure drop of DPF increaseing to regenerative limiting value needs 1980 minutes.Using the FBC-added diesel fuel can extend the period of regeneration threshold, and increase the particulate storing capacity and regeneration ability of the DPF.Owing to the pressure drop characteristics of DPF regeneration process, particle in the deep bed filtration layer is firstly oxidized, and the filter cake layer of DPF wall surface also begins to oxidize in the process of DPF regeneration.As filter cake layer has turned thinner and fractured slowly, pressure drop of DPF decreases rapidly.Broken pie carrier particles penetrate into the wall, which is fully contacted with DPF and fully oxidized.Wall-flow diesel particulate filter filtrates particulate matter by diffusion, interception, gravity and interia.The back pressure of regenerated DPF increases linearly with regeneration times, and the trapping efficiency of DPF on PM increases at the same time.On the whole, using the FBC-added diesel fuel can obviously decrease DPF regeneration temperature, which can enhance the effect of DPF regeneration.It can filter PM emitted by diesel engine efficiently combining with electrical heating device, which has a reference for environmental protection and purifying diesel exhaust.