Development of Diesel Particulate Filter for Marine Diesel Engine- Characteristics of PM Collection in Electrostatic-Cyclone DPF

In this research an Electrostatic-cyclone DPF (Diesel Particulate Filter) was developed to reduce the PM (Particulate Matter) emission from a marine diesel engine. Experiments were executed to investigate and estimate the feasibility and collection efficiency of the DPF. The effects of three factors on the PM collection efficiency was investigated; exhaust gas temperature in the DPF inlet, exhaust gas flow rate through the DPF and the length of the discharge electrode. Results show that the Electrostatic-cyclone DPF is suitable for the marine diesel engine. The collection efficiency of PM reached 65% by dilution method and 80% by the opacity smoke-meter method. The exhaust gas temperature had little effect on the collection efficiency.