Abstract:

Diesel powered vehicles produce a considerable amount of particulate laden exhaust gases, which is thought to be the main source of air pollution and also cause lung cancer. The diesel particulate filter（DPF） is one of the leading technologies for reducing diesel PM（particulate material）. In this paper, utilizing carbonized micro-length wood fiber（CMLWF） 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 CMLWF DPF is high, the pressure drop gradient low and performance life long, which can successively open up a new direction for reducing diesel PM.

Key words: carbonized micro-length wood fiber(CMLWF), diesel particulate filter(DPF), particulate material(PM), pressure drop gradient