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乙醇/柴油燃燒顆粒狀態(tài)特征試驗研究
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國家自然科學(xué)基金資助項目（50776042）;江蘇省高校自然科學(xué)基金重點(diǎn)資助項目（10KJA470009）;江蘇省2012年研究生創(chuàng)新計劃資助項目（CXZZ12_0676）;江蘇高校優(yōu)勢學(xué)科建設(shè)工程資助項目（PAPD）


Particulate Status of Diesel Engine Fueled with Ethanol/Diesel Blends
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    摘要:

    針對柴油機(jī)燃用乙醇/柴油的燃燒顆粒,，采用熱重分析、掃描/透射電鏡和顆粒分級采樣的方法，研究乙醇/柴油燃燒顆粒的狀態(tài)特征，探討顆粒組分、粒徑分布和微觀結(jié)構(gòu)隨乙醇摻混比例的變化規(guī)律,。熱重分析結(jié)果表明，碳煙約占乙醇/柴油燃燒顆粒總質(zhì)量的75%,；隨著乙醇摻混比例的增加，顆粒組分中的可溶性有機(jī)物比例升高,，硫酸鹽比例下降,。顆粒分級采樣結(jié)果表明,，摻混乙醇后，粒徑在0.78～1.4μm范圍內(nèi)的顆粒減少,，粒徑為0.25μm的顆粒增加,，顆粒粒徑向小粒徑方向移動。掃描/透射電鏡結(jié)果表明,，隨著乙醇摻混比例的增加,，顆粒的團(tuán)聚程度提高；顆粒微觀結(jié)構(gòu)呈聚合,、內(nèi)核-外殼和無序結(jié)構(gòu),。

    Abstract:

    The particulate status characteristics of diesel engine particulate were studied by using thermo gravimetric analysis, scanning/transmission electron microscopy (SEM/TEM) and staged sampling particulate system methods. The variation of the composition, size distribution and microstructure of particulate with different ethanol ratios were studied. Results showed that soot accounted for about 75% of the total particulate mass. With the increase of ethanol ratios, the proportion of soluble organic fraction (SOF) increased and sulfate decreased. With the increase of ethanol ratios, the particulate of size range 0.78～1.4μm decreased and the proportion of 0.25μm increased. The distribution of particulate moved to small size. The particulate size decreased and agglomeration improved with the increase in the proportion of ethanol ratios. The microstructure of the particulate was polymerization, core-shell and disordered.

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李銘迪,王忠,李立琳,陳林,李瑞娜.乙醇/柴油燃燒顆粒狀態(tài)特征試驗研究[J].農(nóng)業(yè)機(jī)械學(xué)報,2013,44(3):28-32. Li Mingdi, Wang Zhong, Li Lilin, Chen Lin, Li Ruina. Particulate Status of Diesel Engine Fueled with Ethanol/Diesel Blends[J]. Transactions of the Chinese Society for Agricultural Machinery,2013,44(3):28-32.

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  • 在線發(fā)布日期: 2013-02-25
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