低温等离子体对生物柴油发动机颗粒物排放的影响

Study on the experiment of biodiesel engine PM emissions using non-thermal plasma

根据介质阻挡放电理论，设计出低温等离子体发生器，通过台架试验研究了低温等离子体封生物柴油颗粒排放的作用规律，井与0#柴油相比较。运用扫描电镜和X射线能谱仪封柴油机排气中收集的颗粒物样品进行检测和分析，研究结果表明：生物柴油含氧量较高，因而燃烧生成的颗粒物中碳烟成分较少，并且颗粒粒径也较小；元素分析结果表明：两个样品的差别在于0#柴油颗粒物样品中检测到硫，而生物柴油的颗粒样品申未检测到硫成分存在。低温等离子体技术受燃料中硫的影响较小，是一项有前途的柴油机排气后处理技术。

Based on the dielectric barrier discharge theory, the non-thermal plasma reactor was designed. The bench test experiment was carried out, and the reduction of diesel engine emissions with NTP operating on biodiesel diesel had been investigated, and compared with No 0 diesel engine. Scanning electronic microscope and X-ray energy spectrometer were used to detect the surface structure and chemical component of particulate samples from the exhausts of diesel engine. Results showed that the particulate matter was decreased remarkably by NTP, the biodiesel can improve the performance of combustion and the particular matter from the oxygenated fuel had less component and small diameter. The results of elemental analysis revealed that NTP was unaffected by exhausts impurity such as sulfur, and was one promising technology for diesel engine emissions reduction.