TECHNOLOGY PROGRESSES IN DIESEL EXHAUST PARTICLES CONTROL

Implementation of straight and stringent legislation of the pollutant emissions from diesel-engine vehicles and exhaust after-treatment technologies requires the new technological development for diesel particulate matter (DPM) abatement. This article summarizes the current status of DPM control strategy. The main focus is put forward diesel particles composition, particulates formation mechanisms, the particle emissions standards, combustion control strategies and exhaust after-treatment systems for state-of-the-art DPF technologies. Also, the paper covers the DPF regeneration control methodologies. Furthermore, the progress of the highly optimized approaches, which involves the Catalyzed Diesel Particulate Filter (CDPF), the combined technologies of Diesel Oxidation Catalyst (DOC) and DPF and the combined technologies (Filters and SCR/NOx traps) are discussed