Abstract
This paper presents the research on continuous regeneration of diesel particulate filter (DPF) with the addition of nitrogen dioxide (NO2). Experimental tests were conducted in the simulating model reactor (ex situ situation) and on the 165F diesel engine (in situ situation) respectively. In the former the superior oxidizing ability of NO2 was proved. In the latter by additional injection of NO2 to the exhaust pipe ahead of the DPF, it was demonstrated that under 300¡C, NO2 can continuously and effectively regenerate the DPF. The effects of NO2 concentration, reaction temperature and diesel load on DPF regeneration efficiency was analyzed in detail.