温度对DPF过滤参数影响的试验研究  

Influence of Temperature on DPF Filtration Parameter

作　　者：陈鹏[1] 孟忠伟[1] 李路[1] 闫妍[1] 张川[1] 

机构地区：[1]西华大学交通与汽车工程学院汽车测控与安全四川省重点实验室,四川成都610039

出　　处：《车用发动机》2015年第2期57-60,65,共5页Vehicle Engine

基　　金：国家自然科学基金资助项目(51106130);教育部"春晖计划"合作科研项目(Z2014058);四川省教育厅青年基金项目(12ZB138);发动机燃料电控系统及尾气后处理系统产业集群项目(成财教[2013]265);四川省重点科技项目(2011JYZ014);西华大学重点科研基金项目(Z1120319)

摘　　要：柴油机颗粒捕集器(DPF)过滤参数研究对其再生时机的判断具有重要意义。基于外加热源再生台架,研究了过滤参数(压降及其与常温数据的比值、渗透率及其与常温数据的比值)随过滤温度的变化规律,同时考虑了流量和孔隙结构参数变化时的影响。结果表明:过滤温度升高,DPF压降及其比值近似线性增长,渗透率及其比值近似线性减小;线性拟合了压降及其比值、渗透率及其比值随温度的变化曲线,比较发现流量和孔隙结构参数对DPF压降和渗透率都具有一定影响,但对比值的影响较小。It is important to judge the regeneration timing of DPF by the filtration parameter research.The changing laws of filtration parameters consisting of the ratio between pressure drop and room temperature data and the permeation and the ratio with filtration temperature were researched on the generation test bench with exterior heater by taking into consideration the influence of flow rate and pore structure meanwhile.The results showed that the pressure drop and the corresponding ratio increased linearly and the permeation and the ratio decreased linearly with the increase of filtration temperature.The linear fittings of pressure drop,permeation and their respective ratios with temperature were conducted and the flow rate and the pore structure were found to have certain influence on the pressure drop and permeation and less influence on their ratios.

关 键 词：颗粒捕集器 压降 渗透率 过滤温度 流量 孔隙结构 

分 类 号：TK424.5[动力工程及工程热物理—动力机械及工程]