针对柴油车尾气排放特点,采用DOC与CDPF集成的结构形式,设计了一种柴油车四效催化转换装置,并对其性能进行了表征。采用N2吸附法、XRD、DTA等手段对催化剂涂层比表面积、物相结构、热稳定性等进行了测试评价,研究了阳离子表面活性剂、无机触变剂等添加剂对涂层性能的影响。模拟柴油车尾气排放成分,采用FGA-4100（5G）型汽车尾气排气分析仪对催化材料的净化效果进行了测试,结果表明HC、CO、颗粒物净化率〉90%,NO净化率〉60%。
In this paper aimed the trait of tail gas of diesel vehicle,the integrated structure of DOC and CDPF was introduced,the four-way-catalyst for tail gas filter of diesel vehicle was devised and it＇s properties was tested,combining the XRD,BET,DTA measurement,effects of intrinsic textural and structural properties,research of the surface active agent and thixotropic agent as well as its effects on coat properties.Decontamination effect of four-way-catalyst for tail gas filter of diesel vehicle was tested using FGA-4100（5G） tail gas analytic instrument,Analysis results show that CO and HC emissions are reduced outnumber 90%,NO xemissions are reduced about 60%,a solid content about 90% were filtered.
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