| 电控汽油机进气道附壁油膜模拟研究 |
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| 引用本文： | 李顶根,舒咏强,胡艳青.电控汽油机进气道附壁油膜模拟研究[J].小型内燃机与摩托车,2010,39(6):12-17. |
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| 作者姓名： | 李顶根 舒咏强 胡艳青 |
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| 作者单位： | [1]华中科技大学能源与动力工程学院,湖北武汉430074 [2]上海交通大学机械与动力工程学院,湖北武汉430074 |
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| 基金项目： | 华中科技大学校人才引进基金 |
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| 摘 要： | 电控汽油机进气道多点喷射的附壁油膜现象是导致燃油动态传输迟滞的根本原因,为此笔者从喷雾碰壁出发,研究附壁油膜形成过程以及附壁油膜形状和质量分布的影响因素。通过Fluent软件对喷雾碰壁多影响因素的模拟及自定义函数（UDF）对空间颗粒统计分析,从本质上得出影响附壁油膜形成、燃油动态传输迟滞以及混合气形成品质的主要因素,为进气道多点喷射的燃油精确控制提供了较为有力的理论依据。
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| 关 键 词： | 汽油机 油膜 模拟 UDF |
Simulation of Intake Manifold Wall Wetted Fuel Film of Gasoline Engine |
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| Li Dinggen,Shu Yongqiang,Hu Yanqing.Simulation of Intake Manifold Wall Wetted Fuel Film of Gasoline Engine[J].Small Internal Combustion Engine and Motorcycle,2010,39(6):12-17. |
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| Authors: | Li Dinggen Shu Yongqiang Hu Yanqing |
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| Affiliation: | -School of Energy and Power Engineering,Huazhong University of Science and Technology(Wuhan,Hubei,430074,China) 2-School of Mechanical Engineering,Shanghai Jiaotong University |
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| Abstract: | The wall-attached fuel film phenomenon is the main reason to fuel dynamic transmission delay of intake port multi-point injection in electronic control gasoline engine,and the formation and mass distribution influencing factors of wall-attached fuel film was studied.By simulating the spray impingement with Fluent software and statistically analyzing the spatial particles with user-defined function（UDF）,the main influencing factors of wall-attached fuel film formation,fuel dynamic transmission delay,and fuel/air mixture quality were obtained,which provide theoretical basis of accurate fuel control in intake port multi-point injection gasoline engine. |
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| Keywords: | Gasoline Fuel film Simulation UDF |
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