吉林大学学报(工学版) ›› 2017, Vol. 47 ›› Issue (6): 1760-1766.doi: 10.13229/j.cnki.jdxbgxb201706012

• Orginal Article • Previous Articles     Next Articles

Evaluation of influence of ash distribution on diesel particulate filter pressure drop

LI Zhi-jun1, HE Li1, JIANG Rui1, 2, SHEN Bo-xi1, KONG Xiang-jin1, LIU Shi-yu1   

  1. 1.State Key Laboratory of Engines,Tianjin University,Tianjin 300072,China;
    2.Department of Powertrain,Beijing Borgward Automobile Co., Ltd.,Beijing 101500,China
  • Received:2016-07-13 Online:2017-11-20 Published:2017-11-20

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Abstract: An evaluation function was established to analyze the influence of ash distribution on Diesel Particulate Filter (DPF) pressure drop. The variables in this function include the channel diameter, channel wall thickness, ash mass and the soot. Results show that the relative magnitude of ash, wall and soot permeability decides the trend of DPF pressure drop changing with the ash distribution. When the ratio of wall and ash permeability A= 0.1 and the ratio of wall and soot permeability S=2, the evaluation function is positive, and the DPF pressure drop is lower when ash locating on the wall of the inlet channel than the ash locating at the rear of the inlet channel, and passive regeneration is adopted. When A= 10 and S=2, the tendency reverses, and active regeneration is taken. Wall thickness, channel diameter, ash mass and soot mass affect the extent of the influence of ash distribution on DPF pressure drop.

Key words: power machinery and engineering, particulate filter, ash distribution, pressure drop

CLC Number: 

  • TK421.5
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