NTP喷射系统再生柴油机颗粒捕集器的试验研究  

Experimental Study on DPF Regeneration Based on Non-thermal Plasma Injection System

作　　者：施蕴曦[1] 蔡忆昔[1] 李小华[1] 陈亚运[1] 李弘扬[1] 郑益[1] 

机构地区：[1]江苏大学汽车与交通工程学院,镇江212013

出　　处：《工程热物理学报》2015年第12期2754-2759,共6页Journal of Engineering Thermophysics

基　　金：国家自然科学基金项目(No.51176067);江苏省高校优势学科建设项目(PDPA)

摘　　要：以氧气为气源,利用自行设计的低温等离子体(Non-thermal Plasma,NTP)喷射系统,进行了不同温度下的DPF再生试验研究。结果表明,氧气经NTP发生器放电后产生具有强氧化性的活性物质O_3、O,能够实现对PM的分解,生成CO和CO_2;随着试验温度的升高,CO物质的量呈整体下降的趋势,CO_2和CO_x(CO和CO_2)物质的量均呈先升高后降低的趋势;试验温度为80℃时,DPF的背压下降最快,再生效果最为显著,且内部温度及温度梯度均远小于DPF的使用极限,有利于DPF的使用寿命。NTP技术在不加催化剂的条件下,实现了相对较低温度下的DPF再生,与传统的再生方法相比,体现出了该再生方法的优越性。By using a self-designed Non-thermal Plasma（NTP）injection system,an experimental study of the regeneration of DPF was conducted at different temperatures,where oxygen as the gas source.The results revealed that PM can be decomposed to generate CO and CO2 by these active substances O3、O which was generated through the discharge reaction of NTP reactor.With the increasing of test temperature,the mole of CO shows an overall downward trend,while the mole of CO2 and COx（the sum of CO and CO2）increase first and then decrease.When the test temperature is 80℃,the backpressure of DPF decreases fastest and the regenerative effect is remarkable.The temperatures and temperature gradients at any position of DPF are far lower than serviceability limit.DPF can be regenerated by NTP technology without any catalyst at a lower temperature.Compared with the traditional regeneration method,the NTP technology has its superiority.

关 键 词：低温等离子体 柴油机颗粒捕集器 再生 氧气 温度 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]