温度对NTP喷射系统处理柴油机模拟排气的影响  

Effect of Temperature on NTP Treatment of Diesel Engine Exhaust Gas

作　　者：蔡忆昔[1] 张乐夫[1,2] 冉冬立[1] 王军[1] 庄凤芝[1] 

机构地区：[1]江苏大学汽车与交通工程学院,镇江212013 [2]江苏省经济贸易委员会,南京210008

出　　处：《内燃机工程》2011年第4期7-11,共5页Chinese Internal Combustion Engine Engineering

基　　金：国家自然科学基金资助项目(50776041);江苏省自然科学基金资助项目(BK2008225)

摘　　要：为研究低温等离子体活性物质对柴油机有害排放物的去除效果,自行设计了介质阻挡放电型低温等离子体反应器。采用独立于柴油机排气管之外的低温等离子体喷射系统,研究其在不同的柴油机模拟排气温度下,对各排气成分的转化效果。研究结果表明:在低温等离子体环境下,NO主要转化为NO2;O3对NO和HC有较强的氧化作用;高温不利于NO的转化和O3的产生,但有利于HC的氧化,同时产生CO;温度和激励峰峰值电压的变化对CO2浓度基本没有影响。In order to study the effect of non-thermal plasma（NTP） after-treatment system on removal of diesel engine harmful emissions,using the self-designed dielectric barrier discharge NTP reactor and a NTP injection system located outside diesel engine exhaust pipe,the removal efficiency of simulated diesel exhaust gas was studied at different temperatures.Results show that in NTP environment,NO is mainly converted into NO2,O3 has a strong oxidation effect to HC and NO,high temperature is not conducive to NO conversion and O3 production,however it can promote HC oxidation and producing CO,temperature and peak excitation voltage change hardly affect CO2 concentration.

关 键 词：内燃机 柴油机 低温等离子体 介质阻挡放电 排放 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]