Development of particulate trap system with cross flow ceramic filter and reverse flow cleaning regeneration 2

摘要

Behavior of particulate accumulation/removal on porous filter was studied. Optimum elements of effective reverse cleaning regeneration were examined. DPF system with cross flow filter and pulse jet cleaning (PT) was applied to city bus application. Its trap efficiency was evaluated by California Air Resources Board. Two terms of fleet tests were conducted in Los Angeles area. First test demonstrated serviceability of reverse cleaning regeneration, filter and high trap efficiency. It accumulated 4340 miles and proved filter durability. Size-reduced second APT had negative effect of turbulent flow to the particulate burning area.