Study on test instrument and filtration theory of the carbonized micron wood fiber DPF

• Published in: Microporous and mesoporous materials Vol. 142; no. 2; pp. 655 - 660
• Main Authors: Guo, XiuRong, Du, Danfeng, Wang, Fenghu, Ma, Yan, Yang, Chunmei, Zhang, Han-Zhao
• Format: Journal Article
• Language: English
• Published: San Diego, CA Elsevier Inc 01.07.2011; Elsevier
• Subjects: Carbonized micron wood fiber (CMWF); Chemistry; Colloidal state and disperse state; Diesel particulate filter (DPF); Engine bench test; Exact sciences and technology; Filtration theory; Flow characteristics; General and physical chemistry; Porous materials; Filtration theory; Flow characteristics; Carbonized micron wood fiber (CMWF); Diesel particulate filter (DPF); Engine bench test; Filtration; Instruments; Wood fiber; Theory; Diesel engine; Numerical method; Porous material; Gases; Pore size; Efficiency; Filter; Pressure drop; Low pressure; Numerical simulation
• ISSN: 1387-1811; 1873-3093
• DOI: 10.1016/j.micromeso.2011.01.013

[Display omitted] ► A method of utilizing the carbonized micron wood fiber (CMWF) as the filter material. ► A corresponding numerical simulation method. ► A kind of detachable DPF. ► A diesel engine bench test and the influence elements upon Δ p/ H. In this paper, a method of utilizing the carbonized micron wood fiber (CMWF) as the filter material is presented and a corresponding numerical simulation method is applied. Furthermore, a kind of detachable diesel particulate filters (DPF) is developed, a diesel engine bench test is conducted and the influence elements upon Δ p/ H are researched. Theory and test show that the smaller the average micro pore diameter is, the larger the focal length of parabola is, which means that the numerical simulation method can be consistent with the test very well. Meanwhile, a lot of tests prove that the DPF filters with bigger pore diameter and longer length should take priority over the others, together with the increase of the filter length, the PM arresting efficiency will be improved and Δ p/ H also climbs up rapidly and a kind of modified CMWF DPF, of which the micro pore diameter reduces gradually from entry to exit end, possesses high filtration efficiency and low pressure drop and be suited to filter the exhaust gases of diesel.