A cheap and reliable stainless steel net filter (SSNF) with a corona charging unit has been developed as a major part of a diesel after-treatment system.

• 研制了一种新的柴油机排气微粒后处理系统，采用廉价而可靠的不锈钢丝网作为过滤体，利用电晕荷电技术提高不锈钢的过滤效率。