In an attempt to improve ambient air quality, retrofit programmes have been encouraged; targeting reductions in PM emissions by means of diesel particulate filters (DPFs). However depending on the DPF design and operating conditions increased nitrogen dioxide (NO2) emissions have been observed, which is causing concern. Previous work showed that retrofitting a DPF system employing a fuel borne catalyst (FBC) to facilitate regeneration, reduced NO2 emissions. This paper outlines the investigation of a base metal coated DPF to enhance the reduction of NO2. Such a DPF system has been fitted to older technology buses and has demonstrated reliable field performance.
Retrofitting Urban Buses to Reduce PM and NO2
Sae Technical Papers
2004 SAE Fuels & Lubricants Meeting & Exhibition ; 2004
08.06.2004
Aufsatz (Konferenz)
Englisch
Retrofitting urban buses to reduce PM and NO2
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