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    • Study on the Influences of Carrier Structures on Diesel Particulate Filter Performance Characteristics Based on Orthogonal Experimental Design
    DOI：10.13949/j.cnki.nrjgc.2024.05.009
    Key Words:diesel particulate filter（DPF）  orthogonal experimental design
    Author NameAffiliationE-mail
    BAO Guangyuan School of Mechanics and Transportation， Southwest Forestry University， Kunming 650224， China
    Key Laboratory of Vehicle Environmental Protection and Safety in Plateau Mountain Area of Yunnan Provincial Colleges， Kunming 650224， China     		2546296009@qq.com 
    HE Chao* School of Mechanics and Transportation， Southwest Forestry University， Kunming 650224， China
    Key Laboratory of Vehicle Environmental Protection and Safety in Plateau Mountain Area of Yunnan Provincial Colleges， Kunming 650224， China     		chao.he@swfu.edu.cn 
    LI Jiaqiang School of Mechanics and Transportation， Southwest Forestry University， Kunming 650224， China
    Key Laboratory of Vehicle Environmental Protection and Safety in Plateau Mountain Area of Yunnan Provincial Colleges， Kunming 650224， China     		lijiaqiangok@swfu.edu.cn 
    XIAO Yingxue School of Mechanics and Transportation， Southwest Forestry University， Kunming 650224， China
    Key Laboratory of Vehicle Environmental Protection and Safety in Plateau Mountain Area of Yunnan Provincial Colleges， Kunming 650224， China     		xyxlgh@163.com 
    ZI Tianxi School of Mechanics and Transportation， Southwest Forestry University， Kunming 650224， China
    Key Laboratory of Vehicle Environmental Protection and Safety in Plateau Mountain Area of Yunnan Provincial Colleges， Kunming 650224， China     		1907274070@qq.com 
    HUANG Lishuan School of Mechanics and Transportation， Southwest Forestry University， Kunming 650224， China
    Key Laboratory of Vehicle Environmental Protection and Safety in Plateau Mountain Area of Yunnan Provincial Colleges， Kunming 650224， China     		1986846205@qq.com 
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    Abstract:A mathematical model for diesel particulate filter（DPF） pressure drop and capture efficiency was developed in order to lower the pressure drop and improve the capture efficiency of DPF. The impacts of carrier ratio （x1）， wall thickness （x2） and cell density on DPF performance were methodically examined using an experimental methodology and polynomial approximation algorithm. The results show that pressure drop and capture efficiency are highly influenced by carrier ratio and wall thickness. The DPF pressure drop is relatively low and the capture efficiency is relatively good when the carrier ratio and wall thickness are within the ranges of （1.40，1.53） and （0.249，0.267） mm， respectively. At a carrier ratio of 1.52 and a wall thickness of 0.264 mm， the pressure drop reaches a minimum of 4.2 kPa， with a capture efficiency of 90.28%. The polynomial approximation algorithm yielded explicit expressions for the pressure drop model and capture efficiency model：pressure drop model ， capture efficiency model . With coefficients of determination of 0.999 6 and 0.998 5， respectively， and root mean square errors of 0.011 0 and 0.000 2， respectively， the DPF pressure drop and capture efficiency models show good predictive accuracy and goodness of fit.
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