| 两段喷射直喷式汽油机(TSGDI)点火特性的试验研究与模拟计算 |
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| 引用本文： | 王燕军,王建昕,帅石金.两段喷射直喷式汽油机(TSGDI)点火特性的试验研究与模拟计算[J].汽车工程,2006,28(7):626-629. |
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| 作者姓名： | 王燕军 王建昕 帅石金 |
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| 作者单位： | 1. 中国环境科学研究院,北京,100012
2. 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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| 摘 要： | 用试验和数值模拟两种方法研究了点火时刻对两段喷射直喷式汽油机(TSGD I)性能的影响。研究结果表明,对于不同转速和负荷存在着最佳点火提前角,最佳点火提前角随着发动机转速和负荷的升高而减小,过量空气系数对最佳点火提前角的影响较小;模拟计算表明在最佳点火提前角时,火花塞周围形成了燃空当量比为1.0~1.2的较浓混合气区域。
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| 关 键 词： | 两段喷射直喷汽油机(TSGDI) 点火特性 试验研究 模拟计算 |
| 收稿时间： | 2005-05-27 |
| 修稿时间： | 2005-05-272005-08-26 |
Experimental Study and Numerical Simulation on Ignition Characteristics of Two-stage Gasoline Direct Injection Engine |
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| Wang Yanjun,Wang Jianxin,Shuai Shijin.Experimental Study and Numerical Simulation on Ignition Characteristics of Two-stage Gasoline Direct Injection Engine[J].Automotive Engineering,2006,28(7):626-629. |
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| Authors: | Wang Yanjun Wang Jianxin Shuai Shijin |
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| Institution: | 1. Chinese Research Academy of Environmental Sciences, Beijing 100012; 2. Tsinghua University, State Key Laboratory of Automotive Safety and Energy, Beijing 100084 |
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| Abstract: | The effect of ignition timing on the performance of a two-stage gasoline direct injection engine is studied by both testing and numerical simulation.The result shows that the optimal ignition advance angles reduce as engine speed and load increase.It also indicates that air-fuel ratio only has little effect and at optimal spark advance,there is a richer mixture region with an air excess factor of 1.0-1.2 around spark plug. |
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| Keywords: | Two-stage gasoline direct injection engine Ignition characteristics Experimental study Numerical simulation |
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