Effect of a Cu-Ferrite Catalyzed DPF on the Ultrafine Particle Emissions from a Light-Duty Diesel Engine

The emissions of diesel engines in terms particulate matter are limited all over the world. One possible solution for reaching target imposed by various regulations could be adoption a catalytic filter (CDPF). Nevertheless, effect CDPFs on particle size distributions (PSDs) during regeneration process needs to deeply investigated. Therefore, this research work is focused detailed PSD analysis active 30 %wt CuFe2O4 loaded CDPF at exhaust an L-D engine reach more complete understanding behavior. results experimental tests evidence that outlet, compared standard DPF: (i) start-up regeneration, three orders magnitude lower and remain two sizes larger than 50 nm; (ii) PSDs measured time range 200–450 s exhibit bimodality observed accumulation phase, with peak lower; (iii) end PN distribution exhibits reductions 5 nm above nm, respectively.