低温等离子体对柴油机排气微粒数量和质量影响的试验研究  

Experimental Study of Effects of Non-Thermal Plasma on Exhaust PM Quantity and Mass in Diesel Engine

作　　者：邢世凯[1,2] 马朝臣[1] 马松[1] 

机构地区：[1]北京理工大学机械与车辆学院,北京100081 [2]河北师范大学职业技术学院,石家庄050024

出　　处：《内燃机工程》2013年第1期8-12,共5页Chinese Internal Combustion Engine Engineering

基　　金：国家自然科学基金资助项目(51006011);河北省科学技术厅科技支撑基金资助项目(11213913D)

摘　　要：基于电晕放电理论设计了低温等离子体(non-thermal plasma,NTP)发生器,由柴油机、低温等离子体处理器和静电低压冲击仪组成试验系统和测试系统,测试低温等离子体对柴油机排气微粒粒径、数量及其分布的影响。以试验为基础,对柴油机排气微粒经过低温等离子体后的物理性质进行了研究和分析,为聚集体的清除提供了理论基础。试验结果表明:低温等离子体通过氧化和捕集的方式降低柴油机排气微粒的数量浓度和质量浓度,排气微粒总数量下降了40%,排气微粒总质量减小了76.9%,随着低温等离子体强度的增大降低作用增强。On the basis of corona discharge theory, a non-thermal plasma（NTP） reactor was designed. An experiment and measurement system, consisting of diesel engine, NTP reactor and electrostatic low voltage impacter （EI.VI）, was built up and used to examine effects of NTP on PM size, quantity and their distributions. Physical properties of the PM after NTP treatment were analyzed using experiment method for providing the theoretical basis to remove the PM aggregation. Results indicate that NTP can reduce PM quantity and mass densities by trapping and oxidation action, with NTP intension increasing its reduction function enhances.

关 键 词：内燃机 柴油机 微粒 低温等离子体 数量浓度 质量浓度 

分 类 号：TK421.5[动力工程及工程热物理—动力机械及工程]