Study on Nano-PM Formed from Laminar Diffusion Flame of Diesel Fuel
Study on Nano-PM Formed from Laminar Diffusion Flame of Diesel Fuel
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柴油层流扩散火焰形成纳米颗粒物的研究
DOI：
10.1299/kikaib.72.3121
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发表时间：
2006
期刊：
影响因子：
--
通讯作者：
M. Arai
中科院分区：
文献类型：
--
作者：
T. Sako;T. Furuhata;K. Amagai;M. Arai
颗粒物（PM）的形成仍然是柴油机最重要的问题之一。直径小于100 nm的PM通常被称为纳米PM，其被认为对人类健康具有严重危害。本文的研究目的是获得柴油机燃烧过程中扩散火焰中颗粒物的基本知识。为此目的，一个基本的池燃烧火焰被用来澄清纳米颗粒的排放行为从火焰。以柴油和添加柴油的润滑油为研究对象，对纳米颗粒的形成过程进行了研究。使用扫描迁移率粒度仪（SMPS-3034 TSI）测量PM的数浓度，并且使用燃烧型废气分析仪（MEXA-1370 PM HORIBA）定量分析PM组成。结果表明，数浓度测量表明，在扩散火焰中的纳米颗粒数浓度增加与润滑剂含量的增加。颗粒物成分分析表明，纳米颗粒物主要由烟尘、可溶性有机物和硫酸盐组成。小池火焰燃烧产生的纳米颗粒物主要成分为SOF，而大池火焰燃烧产生的纳米颗粒物主要成分为干碳烟。
Particulate Matter (PM) formation is still one of the most significant problems of diesel engines. PM having a diameter of less than 100 nm is usually called nano-PM which is considered being serious hazardous for human health. The objective of this paper was to obtain knowledge of PM from diffusion flame which was a base of diesel combustion process. For the purpose of it, a fundamental pool combustion flame was used to clarify the nano-PM exhaust behavior from the flame. Diesel fuel and lubricant added diesel fuel were used to clarify the formation process of nanoPM. Number concentration of the PM was measured using a scanning mobility particle sizer (SMPS-3034 TSI) , and PM composition was quantitatively analyzed using a combustion type exhaust gas analyzer (MEXA-1370 PM HORIBA) . As the result, the number concentration measurement showed that nano-PM number concentration in a diffusion flame increased with increasing lubricant content. The PM component analysis clarified that the nano-PM constituent substances were consist of soot, soluble organic fraction (SOF) and sulfate. The main component of nano-PM exhausted from a small pool flame which had closed flame tail was SOF, however dry soot was the main component of a large flame with sooty flame tail.