Abstract
The environmental regulation tends to become strict rapidly, and the further highly performance of DPF is demanded. Generally, the square cell design of DPF is worldwide standard. In recent years, DPFs with some another cell design have been realized by the improvement of processing technology. These DPFs have been developed for higher Ash capacity and lower pressure loss. In this study, we compared two DPFs performances between hexagonal cell and traditional square cell. We measured particle number concentration by EEPS to obtain filtration efficiency on early filtration stage; and we also measured pressure drop during soot loading at engine test bench. Results show that, the soot leakage on early filtration stage reduced rapidly with hexagonal cell. Backpressure during soot loading with hexagonal cell is lower than that of traditional square cell.
