Carbon particulate matter incineration in diesel engine emissions using indirect nonthermal plasma processing

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• 作者：Masaaki Okubo ; Naoki Arita ; Tomoyuki Kuroki ; Toshiaki Yamamoto
• 关键词：Nonthermal plasma ; Particulate matter ; Diesel engine ; Aftertreatment
• 刊名：Thin Solid Films
• 出版年：2007
• 期刊代码：78_00406090
• 类别：ph
• 出版时间：12 March 2007
• 卷：515
• 期：9
• 页码：4289-4295
• 文件大小：672 K

摘要

One of the promising applications of nonthermal plasma (NTP) for environmental cleanup technology is low-temperature oxidation or incineration of carbon particulate matter (PM) in diesel engine emissions. In this process, NO₂ and activated radical species induced by NTP can incinerate carbon PM trapped by a diesel particulate filter (DPF) at low temperature (< 300 °C). In the present study, an experiment was carried out on indirect NTP DPF regeneration for real diesel engine emissions comprising CO₂ of several per cent, hydrocarbons of several hundreds of ppm and moisture of several tens of percentages. It was confirmed that DPF regeneration is possible for a real diesel emission at a low temperature of 280 °C. The removal energy efficiency was estimated to be 0.82 g/kW h. This electric power range is sufficient to meet the recently proposed long-term national regulation for diesel automobiles in Japan.