| 基于仿真的缸内直喷汽油机燃烧系统的开发与改进 |
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| 引用本文： | 叶伊苏,王伟民,王兆文,章帅韬.基于仿真的缸内直喷汽油机燃烧系统的开发与改进[J].汽车工程,2011,33(10):838-844. |
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| 作者姓名： | 叶伊苏 王伟民 王兆文 章帅韬 |
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| 作者单位： | 1. 东风汽车公司技术中心,武汉,430058
2. 东风汽车公司技术中心,武汉430058;华中科技大学能源与动力工程学院,武汉430074 |
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| 摘 要： | 以某款采用均质混合气燃烧模式的缸内直喷汽油机燃烧系统的开发为例,介绍了CFD技术在喷雾模拟中的应用.首先对喷油器的喷雾模型进行试验标定,然后将标定好的模型应用到缸内瞬态流动和喷雾仿真中.对最大转矩点(1 800r/min)和额定功率点(5 500r/min)两种工况下的缸内流场、混合气形成过程和点火时刻的浓度分布进行详...
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| 关 键 词： | 汽油直接喷射 混合气形成 浓度分布 滚流 湍动能 |
The Development and Improvement of Combustion System in a GDI Engine Based on Simulation |
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| Ye Yisu,Wang Weimin,Wang Zhaowen,Zhang Shuaitao.The Development and Improvement of Combustion System in a GDI Engine Based on Simulation[J].Automotive Engineering,2011,33(10):838-844. |
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| Authors: | Ye Yisu Wang Weimin Wang Zhaowen Zhang Shuaitao |
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| Institution: | Ye Yisu1,Wang Weimin1,Wang Zhaowen1,2 & Zhang Shuaitao1 1.Technical Center of Dongfeng Corporation,Wuhan 430058,2.College of Energy and Power Engineering,Huazhong University of Science and Technology,Wuhan 430074 |
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| Abstract: | Taking the development of the combustion system of a GDI engine adopting homogeneous charge combustion mode as example,the application of CFD technology to spray simulation is presented.Firstly,the spray model of injector is calibrated by tests.Then the calibrated model is applied to the simulation on transient in-cylinder flow and spray.The in-cylinder flow fields,the process of mixture formation and the fuel concentration distribution at ignition time are all analyzed for two working conditions of peak to... |
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| Keywords: | GDI mixture formation concentration distribution tumble turbulent kinetic energy |
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