Abstract

The large amount of particulate matter (PM) and nitrogen oxides (NOx) in diesel exhaust have brought critical environmental and health issues, resulting in the implementation of limits for diesel exhaust PM and NOx emissions in some countries. The diesel particulate filter (DPF) is one of the leading technologies for reducing diesel PM. In this paper, the method of utilizing micro-length fiber carbonized wood (MLFCW) as filter material of DPF is presented and a corresponding mathematic model is built for the first time. Theory and test prove that the filter efficiency of the MLFCW DPF is high, the exhaust pressure drop gradient low and service life long, which can successively open up a new direction for reducing diesel PM.

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