1. 昆明贵研催化剂有限责任公司技术研究院
2. 潍柴动力股份有限公司内燃机与动力系统全国重点实验室
纸质出版:2026
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殷雪梅, 李顺红, 吕志华, 等. 柴油机后处理ccSCR路线N2O排放特性研究[J]. 内燃机学报, 2026,44(1):58-67.
殷雪梅, 李顺红, 吕志华, et al. 柴油机后处理ccSCR路线N2O排放特性研究[J]. 2026, 44(1): 58-67.
殷雪梅, 李顺红, 吕志华, 等. 柴油机后处理ccSCR路线N2O排放特性研究[J]. 内燃机学报, 2026,44(1):58-67. DOI: 10.16236/j.cnki.nrjxb.202601007.
殷雪梅, 李顺红, 吕志华, et al. 柴油机后处理ccSCR路线N2O排放特性研究[J]. 2026, 44(1): 58-67. DOI: 10.16236/j.cnki.nrjxb.202601007.
为研究柴油机后处理紧耦合选择性催化还原(ccSCR)路线的一氧化二氮(N
2
O)排放特性,研究了柴油机在世界统一瞬态循环(WHTC)、世界统一稳态循环(WHSC)和低负荷循环(LLC)下不同催化剂、不同尿素喷射量和电加热(EHC)对N
2
O排放的影响.结果表明:氨泄漏催化剂(ASC)对N
2
O生成的分担率最大,高达50%;增加尿素喷射量利于降低ASC后NO
x
排放,但增加ASC后NH
3
和N
2
O排放风险.WHTC、WHSC和LLC循环下开启EHC,尿素喷射量增加,ASC后NO
x
排放下降、NH
3
和N
2
O排放增加;随EHC加热时间增加,ccSCR和SCR入口平均温度均提升,NO
x
、NH
3
和N
2
O排放降低;WHTC、WHSC和LLC循环下开启EHC,尿素喷射量增加是导致ASC后N
2
O排放增加的主要原因.针对带EHC的ccSCR国Ⅶ后处理路线,建议优化尿素喷射策略并搭配低N
2
O型ASC催化剂后处理系统,以实现降低NO
x
同时降低N
2
O排放.
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Mendoza Villafuerte Pablo,Demuynck Joachim,Bosteels Dirk,Wilkes Thomas,Mueller Volker,Recker Patrick.Future-proof heavy-duty truck achieving ultra-low pollutant emissions with a close-coupled emission control system including active thermal management[J].Transportation Engineering,2022.
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