Comparative investigation of NO_x emission characteristics from a Euro 6-compliant diesel passenger car over the NEDC and WLTC at various ambient temperatures

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• 作者：Jinyoung Ko^a ; Dongyoung Jin^a ; Wonwook Jang^a ; Cha-Lee Myung^a ; Sangil Kwon^b ; Simsoo Park^a ; ^{spark@korea.ac.kr}
• 关键词：NOx emission ; Lean NOx trap (LNT) ; New European driving cycle (NEDC) ; World-harmonized light-duty vehicle test cycle (WLTC) ; Ambient temperature
• 刊名：Applied Energy
• 出版年：2017
• 出版时间：1 February 2017
• 年：2017
• 卷：187
• 期：Complete
• 页码：652-662
• 全文大小：1415 K
• 卷排序：187

文摘

This study focused on the NOx emission characteristics from a Euro 6 diesel vehicle equipped with LNT. Vehicle tests were performed over the NEDC and WLTC at various ambient temperatures. Real-time NOx conversion behaviors were quantitatively compared with NOx sensors through the LNT. More LNT regeneration events of 2.5 times were observed in the WLTC than NEDC mode. The change from normal temperature to sub-zero temperature had a large impact on NOx emissions.