The effect of nonthermal plasma on the oxidation and removal of particulate matter under different diesel engine loads

The effect of nonthermal plasma on the oxidation and removal of particulate matter under different diesel engine loads
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不同柴油机负荷下低温等离子体对颗粒物氧化去除的影响

DOI:
10.1002/ppap.202100104
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发表时间:
2021-10
影响因子:
3.5
通讯作者:
He Yong
He Yong
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Zhu Kan;Cai Yixi;Shi Yunxi;Lu Yirui;Zhou Yin;He Yong

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低温等离子体(NTP)可以在低温(≤200℃)下氧化分解柴油机颗粒物(PM),表现出良好的应用前景。 PM 样品是在不同柴油发动机负载下收集的,并使用 NTP 方法进行氧化。经NTP处理后,PM样品的挥发分(VF)质量分数在低发动机负荷(<70%)下降低,在高发动机负荷(≥70%)下增加。 NTP可以去除PM中的醛基,减弱PM的挥发。 NTP处理后VF需要更高的温度才能达到最大挥发率。 NTP处理后小分子相对含量显着升高。
Nonthermal plasma (NTP) can oxidize and decompose particulate matter (PM) of diesel engines at low temperatures (≤200°C), exhibiting good application prospects. PM samples were collected under different diesel engine loads and were oxidized using an NTP method. The volatile fraction (VF) mass fraction of the PM samples decreases under low engine loads (<70%) and increases under high engine loads (≥70%) after the NTP treatment. NTP can remove aldehyde groups in PM and weaken the volatilization of PM. A higher temperature is needed for the VF to reach its maximum volatilization rate after the NTP treatment. The relative content of the small molecules is significantly higher after the NTP treatment.
使用非热等离子体研究柴油颗粒物理化学性质的演变
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