| CO2和H2对HCCI二甲醚发动机燃烧影响的数值模拟 |
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| 引用本文： | 钟赟,乔信起,方俊华,罗马吉,黄震.CO2和H2对HCCI二甲醚发动机燃烧影响的数值模拟[J].汽车工程,2006,28(1):20-23. |
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| 作者姓名： | 钟赟 乔信起 方俊华 罗马吉 黄震 |
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| 作者单位： | 上海交通大学内燃机研究所,上海,200030 |
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| 基金项目： | 中国科学院资助项目;国家"火炬计划" |
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| 摘 要： | 模拟了燃用DME的HCC I发动机的燃烧过程,研究了进气添加剂CO2和H2对其着火时刻和指示功的影响。结果表明:CO2能延迟着火时刻,降低缸内压力和温度,从而扩大HCC I燃烧运行范围;H2也可推迟着火,并能有效提高发动机的指示功。为了既控制着火始点,又提高发动机指示功,提出进气中同时添加适量CO2和H2,并就此进行了计算。
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| 关 键 词： | 氧化剂 着火 HCCI发动机 二甲醚 模拟 |
| 收稿时间： | 2004-12-23 |
| 修稿时间： | 2004-12-232005-03-07 |
Numerical Study on the Effects of CO2 and H2 on Combustion in a Dimethyl Ether HCCI Engine |
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| Zhong Yun,Qiao Xinqi,Fang Junhua,Luo Maji,Huang Zhen.Numerical Study on the Effects of CO2 and H2 on Combustion in a Dimethyl Ether HCCI Engine[J].Automotive Engineering,2006,28(1):20-23. |
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| Authors: | Zhong Yun Qiao Xinqi Fang Junhua Luo Maji Huang Zhen |
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| Institution: | Institute of Internal Combustion Engine, Shanghai Jiaotong University, Shanghai 200030 |
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| Abstract: | With a single-zone model and chemical kinetics mechanism,the homogeneous charge compression ignition(HCCI) combustion process in a diesel engine fueled with dimethyl ether(DME) is simulated.The effect of CO_2 and H_2 as intake air additives on ignition time and indicated work is studied.The results show that CO_2 delays ignition and decreases in-cylinder pressure and temperature,which widens the operating range of HCCI engine.H_2 also delays ignition,and increases indicated work effectively as well.Finally,the proper proportions of CO_2 and H_2 added simultaneously into intake air for both controlling ignition time and raising indicated work are given with calculation. |
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| Keywords: | Oxidizer Ignition HCCI engine DME Simulation |
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