| 基于缸内直喷的汽油HCCI燃烧特性的研究 |
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| 引用本文： | 王建昕,帅石金,王志.基于缸内直喷的汽油HCCI燃烧特性的研究[J].工程热物理学报,2008,29(1). |
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| 作者姓名： | 王建昕 帅石金 王志 |
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| 作者单位： | 清华大学,汽车安全与节能国家重点实验室,北京,100084 |
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| 基金项目： | 高辛烷值燃料均质压燃可控着火燃烧过程的基础研究(No．2001CB209204) |
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| 摘 要： | 实现汽油机的均质混合气压燃(HCCI)的难点是精确地控制着火时刻、燃烧速率以及扩展高负荷运行范围.在缸内直喷汽油机(GDI)上试验研究了分层混合气和辅助火花点火对HCCI燃烧特性的影响,考察了对不同运行工况时的适应性.开展了负阀重叠与缸内多段喷油相结合控制HCCI着火稳定性的研究,考察了不同喷油控制策略对HCCI燃烧的影响,确定了HCCI运行工况范围.
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| 关 键 词： | 缸内直喷 汽油机 HCCI 燃烧 缸内直喷汽油机 HCCI 燃烧特性 研究 GASOLINE DIRECT INJECTION BASED COMBUSTION CHARACTERISTICS 控制策略 喷油 着火稳定性 结合 油相 适应性 运行工况 考察 影响 火花点火 分层混合气 试验 范围 |
RESEARCH ON COMBUSTION CHARACTERISTICS OF HCCI BASED ON GASOLINE DIRECT INJECTION |
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| WANG Jian-Xin,SHUAI Shi-Jin,WANG Zhi.RESEARCH ON COMBUSTION CHARACTERISTICS OF HCCI BASED ON GASOLINE DIRECT INJECTION[J].Journal of Engineering Thermophysics,2008,29(1). |
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| Authors: | WANG Jian-Xin SHUAI Shi-Jin WANG Zhi |
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| Abstract: | Homogeneous charge compression ignition (HCCI) has challenges in ignition timing control, combustion rate control and operating range extension. In this paper, the effects of stratified charge and assisted spark ignition on HCCI combustion was experimentally studied in a gasoline direct injection (GDI) engine. Multiple gasoline direct injection with negative valve overlap was used to control HCCI ignition stability. The different injection strategies was investigated and HCCI operation range was obtained. |
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| Keywords: | direct injection gasoline engine HCCI combustion process |
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