| 直喷汽油机SI/HCCI燃烧过程的CFD模拟研究 |
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| 引用本文： | 石玲,刘建房,范钱旺,范君艳. 直喷汽油机SI/HCCI燃烧过程的CFD模拟研究[J]. 佳木斯工学院学报, 2012, 0(3): 368-371,378 |
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| 作者姓名： | 石玲 刘建房 范钱旺 范君艳 |
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| 作者单位： | [1]上海师范大学天华学院,上海201815 [2]同济大学汽车学院,上海201804 |
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| 基金项目： | 上海高校选拔培养优秀青年教师科研专项基金（TH10012）;汽车估损人才培养体系建设与开发课题资助. |
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| 摘 要： | 建立了缸内直喷HCCI汽油机三维数值模型,且搭建了CFD-化学动力学反应机理计算模型.基于该计算模型平台研究了缸内直喷汽油机SI/HCCI燃烧模式下的燃烧与排放特性.分析了缸内喷雾发展过程、混合气空间分布以及不同燃烧模式下缸内压力与NO排放.研究结果表明,与传统火花点火燃烧模式相比,均质压燃模式下缸内温度空间分布更佳均匀;缸内压力升高率更高;但是燃烧持续期有所缩短.
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| 关 键 词： | 直喷汽油机 均质压燃 燃烧特性 数值模拟 |
CFD Simulation on the CombustionProgress of GDI Engine with SI/HCCI Combustion Modes |
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| Affiliation: | SHI Ling, LIU Jian -fang, FAN Qian - wang, FAN Jun -yan1 (1. Tianhua College, Shanghai Normal University, Shanghai 201815, China;2 School of Automotive, Tongji University , Shanghai 201804, China ) |
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| Abstract: | The 3 - D model of GDI engine with HCCI combustion mode and CFD - Chemical mechanism model were built. The characteristics of the combustion and emission in GDI engine with SI/ HCCI combustion mode were studied by means of the CFD model. The in - cylinder spray development, space distribution of air - fuel mixture, in -cylinder pressure and NO emissions were analyzed. The results show that, compared with the ones in the SI mode, the space distribution of the in - cylinder temperature in HCCI mode is more homogeneous, the rising rate of in - cylinder pressure in HCCI mode is higher, but the combustion duration in HCCI mode is shorter. |
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| Keywords: | direct injection gasoline engine HCCI combustion characteristics numerical simulation |
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