南征1，李楠1*，刘海涛2，张秋实2，赵庆良2，华伦2，伊藤雅晃3，毛星烨3
1.燕山大学车辆与能源学院，河北 秦皇岛 066000；2.清华大学苏州汽车研究院，江苏 苏州 215000；
3.NGK环保陶瓷有限公司，上海 200336
摘要：为满足日益严格的颗粒物排放标准的要求，以不同载体的汽油颗粒捕集器（gasoline particulate filter，GPF）为研究对象，对GPF进行台架性能测试，通过试验对比分析2种载体GPF的再生性能，研究不同载体GPF入口再生温度、不同碳载量下碳烟颗粒的燃烧特性以及载体内部温度的变化规律。试验结果表明：随着再生温度、碳载量、空燃比的提升，主动再生时，GPF再生速率均有所增加；被动再生时，载体内部最高温度出现在载体中后段，载体后端的径向温度梯度较大，再生时需重点关注该位置；2种再生方式的再生效率均随碳载量的增加有所降低。
关键词：GPF；载体；主动再生；被动再生；再生效率
Abstract：In order to meet the more stringent requirements of particulate emission standards, the gasoline particulate filter (GPF) is studied.The performance of GPF is tested, and the regeneration performance of two kinds of GPF is compared and analyzed, and the combustion characteristics of soot under different regeneration temperature or different soot loading and the temperature variation in the sample are studied.The results show that the regeneration rate increases with the increase of temperature, soot loading and air-fuel ratio.During passive regeneration, the maximum temperature appears in the middle and rear section of the sample, and the radial temperature gradient at the rear end of the sample is large, so it is necessary to pay attention to this position during regeneration.The regeneration efficiency of the two regeneration methods decreases with the increase of soot loading.
Keywords:GPF;carrier;active regeneration;passive regeneration;regeneration efficiency
|
