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

Abstract

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

Diesel particulate filter regeneration mechanism of modern automobile engines and methods of reducing PM emissions: a review

“…After NTP oxidation, the proportion of soot increased from 18–36% to 29–52%. In the experiment of Zhu et al (Zhu et al 2021 ), the SOF after NTP treatment showed different components under different engine loads. At the low and medium loads, there were more low-carbon atoms in the SOF.…”

“…Energy is selectively transferred to electrons by the discharge reaction. The free radicals generated by the collision of electrons can oxidize particles at low temperature (Zhu et al 2021 ). The complex chemical reaction of this active substance cannot be realized under normal conditions (Shi et al 2019b ).…”

The Influence of Nonthermal Plasma Technology on Oxidation Characteristics of Soot Operated on Direct Injection Internal Combustion Engines

“…As the main components of SOF in the PM, HC combined with O and O 3 to form CO 2 (Equations ( 12) and ( 13)) as shown in Figure 4. Therefore, PM could be efficiency decreased under the NTP treatment due to a reaction with the high oxidative [24,25].…”

Four‐way purification of automobile exhaust over woody La0.8Ce0.2Fe0.3Co0.7O3 perovskite‐type catalysts enhanced by NTP

“…11,12 Numerous research results indicated that NTP can effectively purify exhaust pollutants, high-energy electrons and active substances generated by NTP collide with surrounding gas molecules to produce reactive species, the reactive species actively combine with the environmental pollutants to form a decomposition product. 13,14 Meanwhile, NTP can realize the surface modification of catalyst for the purification performance improvement while retaining the inherent properties of catalyst. [15][16][17] The main ways to generate NTP mainly include dielectric barrier discharge (DBD), corona discharge and microwave discharge.…”

“…Nonthermal plasma (NTP) is widely considered to be a promising technology by introducing plasma into the exhaust gases 11,12 . Numerous research results indicated that NTP can effectively purify exhaust pollutants, high‐energy electrons and active substances generated by NTP collide with surrounding gas molecules to produce reactive species, the reactive species actively combine with the environmental pollutants to form a decomposition product 13,14 . Meanwhile, NTP can realize the surface modification of catalyst for the purification performance improvement while retaining the inherent properties of catalyst 15–17 .…”