Abstract
As the regulations governing diesel engine emissions become more stringent, an effective aftertreatment technology is thu s needed for, particularly with regard to particulate matter. Although the use of ceramic diesel particulate filters (DPF) is a leading technology in automobiles, it still presents a problem in terms of soot removal or regeneration for marine diesel engine operated with marine diesel oil including the sulfur. In the present study, to establish a nonthermal plasma DPF regeneration method for marine diesel engines, pilot-scale experiments are carried out. It is confirmed that the pressure difference of a DPF, which is a referential parameter of DPF regeneration, decreased only when the plasma is turned on. It is revealed that the DPF regeneration depends on exhaust gas temperature and regeneration at 270℃ has a better performance than that at 220℃. The required plasma energy is approximately 5% of the generated power of the marine engine.
