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Emission Characteristics of Particulate and Gaseous Pollutants from a Light-Duty Diesel Engine with SDPF.

作者信息

Tan Pi-Qiang, Wang Jia-Jun, Duan Li-Shuang, Lou Diming, Hu Zhi-Yuan

机构信息

School of Automotive Studies, Tongji University, Shanghai 201804, China.

出版信息

ACS Omega. 2023 Sep 20;8(39):36292-36301. doi: 10.1021/acsomega.3c04884. eCollection 2023 Oct 3.

DOI:10.1021/acsomega.3c04884
PMID:37810671
原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC10552481/
Abstract

Due to the inherent combustion characteristics of diesel engines, particulate matter (PM) and nitrogen oxides (NO) are the main pollutants of diesel engines. NO emissions under low load and low temperature are the focus of future regulation. Selective catalytic reduction coated on diesel particulate filter (SDPF) can reduce NO and PM emissions of diesel engines at the same time, especially improving the emission characteristics of NO under low load and low temperature. In this paper, a light-duty diesel engine with diesel oxidation catalyst (DOC) and SDPF was studied, and emission of particulate and gaseous pollutants of the engine before DOC, after DOC, and after SDPF was measured under 10 steady-state operating conditions. The effects of SDPF on particulate size distribution, the filtration efficiency of particulate, and the conversion efficiency of gaseous pollutants were analyzed. The results show that DOC + SDPF can trap PM with particle sizes between 10 and 23 nm by 1-2 orders of magnitude, and the conversion and filtration efficiency of DOC + SDPF for both gaseous pollutants and PM exceeds 90% under low-temperature and low-load conditions. The filtration efficiency of SDPF is 94.37% for PM and 90.36% for PN, and the conversion efficiency is 91.43% for NO.

摘要
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本文引用的文献

1
Fine particulate matter and its chemical constituents' levels: A troubling environmental and human health situation in Karachi, Pakistan.细颗粒物及其化学成分水平：巴基斯坦卡拉奇令人担忧的环境与人类健康状况。
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生物柴油、发动机负荷和柴油机颗粒过滤器对重型柴油机排气中非挥发性颗粒数尺寸分布的影响。
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Real-world operation conditions and on-road emissions of Beijing diesel buses measured by using portable emission measurement system and electric low-pressure impactor.采用便携式排放测量系统和电动低压冲击仪测量北京柴油公交车的实际运行条件和道路排放。
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