Effect of High-Octane Oxygenated Fuels on n-Heptane-Fueled HCCI Combustion
Effect of High-Octane Oxygenated Fuels on n-Heptane-Fueled HCCI Combustion
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DOI：
10.1021/ef050433t
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发表时间：
2006-06
期刊：
影响因子：
5.3
通讯作者：
Yuchun Hou;Xingcai Lu;Linlin Zu;Libin Ji;Zhen Huang
中科院分区：
文献类型：
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作者：
Yuchun Hou;Xingcai Lu;Linlin Zu;Libin Ji;Zhen Huang
研究了甲基叔丁基醚（MTBE）、乙醇和甲醇等高辛烷值含氧燃料对正庚烷均质压燃（HCCI）燃烧相位和燃烧速率的影响。在本文中，正庚烷与MTBE，乙醇，甲醇从10体积%到60体积%，以10体积%的增量，分别共混。对三种混合燃料的预混HCCI燃烧进行了对比研究。结果表明，与纯正庚烷相比，高辛烷值含氧燃料/正庚烷混合燃料的HCCI燃烧相位延迟，燃烧速率受到抑制。在较高的燃料/空气当量比下，混合燃料的燃烧相位随着MTBE、乙醇或甲醇比例的增加而逐渐延迟，从而使高温放热（HTHR）发生在上死点附近。
The effect of the addition of high-octane oxygenated fuel including methyl tertiary butyl ether (MTBE), ethanol, and methanol on combustion phasing and combustion rate of homogeneous charge compression ignition (HCCI) combustion fueled with n-heptane as base fuel was comparatively investigated. In this paper, n-heptane was blended with MTBE, ethanol, and methanol from 10 vol % to 60 vol % at 10 vol % increments, respectively. Three kinds of blended fuels were injected into intake air, and their premixed HCCI combustions were studied comparatively. The results show that the HCCI combustion fueled with high-octane oxygenated fuel/n-heptane blended fuels is delayed in the combustion phasing and suppressed in combustion rate in contrast to that with pure n-heptane. Given the higher fuel/air equivalence ratio, the combustion phasing of blended fuels is progressively delayed with the increasing proportion of MTBE, ethanol, or methanol, so that the high-temperature heat release (HTHR) can occur near top-dead cen...