| Fuel design real-time to control HCCI combustion |
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| 作者姓名： | HOU Yuchun HUANG Zhen LU Xingcai FANG Junhuan ZU Linlin |
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| 作者单位： | Institute of Internal Combustion Engine, Shanghai Jiao Tong University,Shanghai 200030, China |
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| 基金项目： | Acknowledgements This work was supported by the National Basic Research Program （Grant No. 2001CB209208） and the Key Project of the National Natural Science Foundation of China （Grant No. 50136040）. |
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| 摘 要： | In order to achieve lower emissions and extensive load in the homogeneous charge com- pression ignition (HCCI) engine system, a novel fuel design concept that high-octane number fuel and high-cetane number fuel are mixed real-time to con- trol HCCI combustion is proposed in this study. HCCI combustion fueled with iso-octane/n-heptane mix- tures controlled real-time on a single-cylinder HCCI combustion engine is studied. The test results show that the equivalence ratio of n-heptane in mixtures decides ignition and controls the combustion phase of HCCI combustion. The addition of iso-octane ex- tends knocking limit in equivalence ratio somewhat, but knocking occurrence mainly depends on the total concentration of mixture. Although operating range in equivalence ratio becomes narrow with the increas- ing proportion of iso-octane, the maximum load of HCCI combustion fueled with iso-octane/n-heptane mixtures controlled real-time is increased about 80% more than that of pure n-heptane. When iso-octane/ n-heptane mixtures are controlled in optimized method, it is proved that the load of HCCI combustion can be fully extended and emissions can be de- creased remarkably, while at the same time the higher indicated thermal efficiencies are obtained over the extensive operation range.
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| 关 键 词： | HCCI 燃料设计 实时控制 正庚烷 异辛烷 |
| 文章编号： | 10.1007/s11434-006-2153-6 |
| 收稿时间： | 2006-04-23 |
| 修稿时间： | 2006-04-232006-07-27 |
Fuel design real-time to control HCCI combustion |
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| HOU Yuchun HUANG Zhen LU Xingcai FANG Junhuan ZU Linlin.Fuel design real-time to control HCCI combustion[J].Chinese Science Bulletin,2006,51(21):2673-2680. |
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| Authors: | Yuchun Hou Zhen Huang Xingcai Lu Junhuan Fang Linlin Zu |
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| Institution: | (1) Institute of Internal Combustion Engine, Shanghai Jiao Tong University, Shanghai, 200030, China |
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| Abstract: | In order to achieve lower emissions and extensive load in the homogeneous charge com- pression ignition (HCCI) engine system, a novel fuel design concept that high-octane number fuel and high-cetane number fuel are mixed real-time to con- trol HCCI combustion is proposed in this study. HCCI combustion fueled with iso-octane/n-heptane mix- tures controlled real-time on a single-cylinder HCCI combustion engine is studied. The test results show that the equivalence ratio of n-heptane in mixtures decides ignition and controls the combustion phase of HCCI combustion. The addition of iso-octane ex- tends knocking limit in equivalence ratio somewhat, but knocking occurrence mainly depends on the total concentration of mixture. Although operating range in equivalence ratio becomes narrow with the increas- ing proportion of iso-octane, the maximum load of HCCI combustion fueled with iso-octane/n-heptane mixtures controlled real-time is increased about 80% more than that of pure n-heptane. When iso-octane/ n-heptane mixtures are controlled in optimized method, it is proved that the load of HCCI combustion can be fully extended and emissions can be de- creased remarkably, while at the same time the higher indicated thermal efficiencies are obtained over the extensive operation range. |
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| Keywords: | HCCI combustion fuel design real-time control n-heptane iso-octane |
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