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A new kind of diesel particulate after-treatment system (EDPF) has been developed. It uses stainless steel nets as the particulate trapping part and uses reverse blowing unit combining with centrifugal collector as the regeneration part. In order to improve the filtering efficiency of stainless steel nets, corona-discharging technology is applied to charge particles before the stainless steel nets. The test result on the 6110 Diesel bench scale shows that the filtering efficiency of the EDPF system can reach to about 70% and the EDPF system is successful.

A fibrous filter made from stainless steel wire net (SSWN) has been developed [1]. This paper studies a 3-dimensional modeling and computing method for the fibrous filters, with image effect based on the SSWN filter. It takes the exhaust aerosol of a diesel engine as a homogeneous, steady flow composed of exhaust gases and particulates. Under the effect of an electrical force field, the particulates deviate from other gas phase components and deposit on the fibers. Mathematical models for calculating the flow, the electric field, and the capture efficiency are presented in this paper. These mathematical models are used for calculating a two-layer SSWN filter model.

A kind of fibrous filter made from stainless steel (SS) wire net has been developed by in our institutes. This paper is to study modeling and computing method for the fibrous filters with image effect based on the previous studies. It takes the exhaust aerosol of diesel engine as an even floating flow composed of exhaust and particulate, under the effect of electrical field force, the particulate deviate from other gas phase components and deposit on the fibers. Mathematics models for calculating the flow and the electric field, as well as the capture efficiency are given in this paper. These mathematics models are used for calculating a single fiber model.

A kind of fibrous filter made from stainless steel (SS) wire net with image effects has been developed in our institutes. The filtering medium is composed of stainless steel nets, so there are effects of neighboring fibers on different layer on the particle-capturing efficiency. We have studied the mathematics model for this filter in paper [1]. This paper mainly researches the influence of two neighboring fibers arranged in series through computing and analyzing an inline two-fiber model of the filter. The computed results point that this kind of the fiber arrangement in series is not a good choice for the fiber.