N2O and PN10 Emissions of Heavy-Duty Vehicle under Low Load Cycle

LIU Zhiwei; LI Tengteng; ZHONG Xianglin; REN Shuojin; HUANG Pengcheng; MENG Qingliang

doi:10.3969/j.issn.1001-2222.2024.03.005

Vehicle Engine ›› 2024, Vol. 0 ›› Issue (3) : 30-35. DOI: 10.3969/j.issn.1001-2222.2024.03.005

N₂O and PN₁₀Emissions of Heavy-Duty Vehicle under Low Load Cycle

LIU Zhiwei¹,LI Tengteng^1,2,ZHONG Xianglin¹,REN Shuojin¹,HUANG Pengcheng¹,MENG Qingliang¹

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Abstract

For the future legislation requirements, the emission characteristics of nitrous oxide(N₂O), particulate matter quantities above 10 nm(PN₁₀) and above 23 nm(PN₂₃) of heavy-duty vehicle were studied at different loads according to low load cycle(LLC), and regional analysis was conducted using the v-VSP binningreconstruction model. The results show that the total N₂O emissions under LLC increase with the increase of load and are directly related to exhaust temperature. N₂O emissions are positively correlated with load in the area of low speed or negative VSP, but N₂O emissions reduce under the full load in the area of positive VSP and mediumhigh speed. Both PN₁₀ and PN₂₃ increase with the load increase, and the particles with the size of 10-23 nm take a higher proportion with the larger load. PN₁₀ and PN₂₃ have relatively high concentrations of emission in the area of mediumhigh speed and high absolute VSP values, but the absolute emissions of PN₁₀ and PN₂₃ mainly concentrate in the area of positive VSP values. With the increase of load, the particles with the size of 10-23 nm take higher proportion in the area of low-speed and high VSP.

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heavy-duty vehicle / LLC / N₂O / particle / emission measurement

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LIU Zhiwei,LI Tengteng,ZHONG Xianglin,REN Shuojin,HUANG Pengcheng,MENG Qingliang. N₂O and PN₁₀Emissions of Heavy-Duty Vehicle under Low Load Cycle[J]. Vehicle Engine. 2024, 0(3): 30-35 https://doi.org/10.3969/j.issn.1001-2222.2024.03.005