张振涛^1,2，李云华^1,2，李敏^1,2

（1.内燃可靠性国家重点试验室,山东 潍坊 261061；2.潍柴动力股份有限公司 发动机技术研究院，山东 潍坊 261061）

摘要：通过试验对SCRF进行特性研究，并通过逐步积碳做背压试验，研究SCRF与背压的关系；通过整体布置，研究温度对SCRF的影响；通过在不同碳载量下喷射尿素，研究碳载量与尿素转化效率的关系；在SCRF满碳状态下，分别设定喷尿素和不喷尿素情况，逐渐提高SCRF温度，研究尿素对被动再生影响；将SCRF积碳到不同程度下，计算箱体内的氨储，研究碳载量与氨储的关系。在试验完成后，整理试验数据，并分析理论与试验结果，按照理论指导试验，试验验证理论的指导方针，对SCRF的特性指标进行深度分析。

关键词：SCRF；碳载量；温度平衡；被动再生

Abstract：The paper illustracts SCRF character by experiment firstly,and studied the relation of SCRF and backpressure by accumulating soot;at the same time studied the influence of temperature by overall layout;studied the relation of soot load and conversion efficiency by urea mass at differentsoot load;at the condition of full soot,increasing SCRF temperature and setting the situation of urea injection,studied urea influence on passive regeneration;in different soot mass,calculating NH₃ storage,studied the relation of soot load and NH₃ storage.Secondly,after finishing the experiment,processed data and analyzed results by theory and vice versa,deeply analyzed the character index in the end.

Key words：SCRF；soot load；temperature balance；passive regeneration