NTP技术对柴油机颗粒物组分及热重特性的影响  

Influence on Component and Thermo-Gravimetric Characteristics of Diesel Particulate Matter by NTP Technology

作　　者：雷利利[1] 蔡忆昔[1] 王攀[1] 韩文赫[1] 张琳[1] 

机构地区：[1]江苏大学汽车与交通工程学院,江苏镇江212013

出　　处：《内燃机学报》2013年第2期144-147,共4页Transactions of Csice

基　　金：国家自然科学基金资助项目(51176067;51206068);教育部博士点基金(新教师类)资助项目(20113227120016);江苏高校优势学科建设资助项目(PAPD)

摘　　要：通过台架试验,研究了温度对低温等离子体(NTP)处理柴油机碳烟排放的影响.利用气相色谱-质谱联用仪(GC-MS),检测了NTP处理后颗粒物样品中的可溶性有机成分(SOF)组分变化.结合热失重分析仪(TGA),分析了NTP对颗粒物样品组分及热重特性和碳烟起燃温度的影响.结果表明,碳烟排放随温度的升高而降低.NTP处理后,碳烟排放降低较多;NTP处理前后,颗粒物样品中SOF成分的质量分数分别为31.12%和24.36%.在25～1,000,℃温度内,NTP处理前后颗粒物样品的总失重率分别为95.63%和94.89%,同时NTP处理后颗粒物样品放热峰温度降低67.5,℃.The effect of temperature on diesel soot emissions by non-thermal plasma（NTP） technology was investigated. The SOF components of PM samples before and after NTP processed were analyzed with GC-MS. Effect of NTP on thermo-gravimetric characteristics of PM and ignition temperature of soot was analyzed with TGA. Results show that soot emission decreases with the increase of temperature, and remarkable decrease in soot is found after NTP processing. Mass fractions of SOF before and after NTP decrease by 31.12% and 24.36%, respectively. Total weight-loss ratios of PM samples decrease by 95.63% and 94.89%, respectively within temperature range of 25 ℃ to 1 000 ℃. Meanwhile, the temperature of peak heat release of PM samples decrease to 67.5 ℃after NTP processing.

关 键 词：柴油机 颗粒物 低温等离子体 可溶性有机成分 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]