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生物柴油/柴油發(fā)動(dòng)機(jī)排放顆粒電鏡分析
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清華大學(xué)汽車(chē)安全與節(jié)能?chē)?guó)家重點(diǎn)實(shí)驗(yàn)室開(kāi)放基金資助項(xiàng)目(KF11161);中國(guó)博士后科學(xué)基金資助項(xiàng)目(20090460860);河南科技大學(xué)博士啟動(dòng)基金資助項(xiàng)目(09001327);河南省基礎(chǔ)研究資助項(xiàng)目(092300410125)


HRTEM Analysis of Particles of Diesel Engine Fuelled with Biodiesel
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    摘要:

    利用高分辨率透射電鏡研究了三缸直噴式柴油機(jī)在兩種供油提前角和兩個(gè)工況時(shí),,燃用兩種比例的生物柴油/柴油混合燃料時(shí)產(chǎn)生的顆粒微觀結(jié)構(gòu)和尺寸,。結(jié)果表明,,在所研究的條件下,,發(fā)動(dòng)機(jī)燃料燃燒產(chǎn)生的顆粒由球形的原始粒子構(gòu)成,,且呈現(xiàn)出不同形狀,具有分形結(jié)構(gòu)特性,;原始粒子具有多層類(lèi)石墨微晶結(jié)構(gòu),,且存在無(wú)序內(nèi)核區(qū)。B0和B20燃料產(chǎn)生的原始粒子的直徑分別在25.6~31.3nm和28.7~40.0nm之間,,燃用生物柴油時(shí)產(chǎn)生的顆粒原始粒子平均直徑大于柴油,。

    Abstract:

    Microstructure and size of particle emitted from the three-cylinder, direct injection diesel engine were investigated by using HRTEM under two fuel supply advance angles, two operating conditions and two kinds of proportions of biodiesel/diesel blends. The results indicated that under the research conditions, spherical primary particles consisted of the particles generated by the combustion of the fuels. The particles exhibited the different shapes and characteristics of fractal structure. The primary particles have multilayer graphite-like microcrystal structure. The diameters of primary particle for B0 and B20 are ranged between 25.6~31.3nm and 28.7~40.0nm, respectively. Mean diameter of primary particles of B20 is larger than that of B0.

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馬志豪,張小玉,馬凡華,徐斌,吳建.生物柴油/柴油發(fā)動(dòng)機(jī)排放顆粒電鏡分析[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2012,43(7):19-23. Ma Zhihao, Zhang Xiaoyu, Ma Fanhua, Xu Bin, Wu Jian. HRTEM Analysis of Particles of Diesel Engine Fuelled with Biodiesel[J]. Transactions of the Chinese Society for Agricultural Machinery,2012,43(7):19-23.

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  • 在線發(fā)布日期: 2012-07-02
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