| 直喷汽油机催化器快速起燃的试验研究 |
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| 引用本文： | 于秀敏,董伟,嵇全喜.直喷汽油机催化器快速起燃的试验研究[J].汽车工程,2011,33(10). |
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| 作者姓名： | 于秀敏 董伟 嵇全喜 |
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| 作者单位： | 1. 吉林大学汽车工程学院,长春,130025
2. 一汽-大众汽车有限公司,长春,130011 |
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| 基金项目： | 国家863项目“轿车直喷汽油机开发”(2006AA110107); 吉林大学基本科研业务费项目(450060323427)资助 |
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| 摘 要： | 针对EA888直喷汽油机建立了试验台架及试验测控系统,通过试验研究了过量空气系数和两次喷射比例对催化器起燃特性的影响规律。试验结果表明,采用微稀的混合气有利于催化器的快速起燃,采用两次喷射有助于推迟点火,提高排气温度,缩短催化器起燃时间。
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| 关 键 词： | 直喷汽油机 催化器起燃 两次喷射 |
An Experimental Study on the Fast Light Off of Catalytic Converter in a Gasoline Direct Injection Engine |
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| Yu Xiumin,Dong Wei,Ji Qnanxi.An Experimental Study on the Fast Light Off of Catalytic Converter in a Gasoline Direct Injection Engine[J].Automotive Engineering,2011,33(10). |
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| Authors: | Yu Xiumin Dong Wei Ji Qnanxi |
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| Institution: | Yu Xiumin1,Dong Wei1 & Ji Quanxi2 1.College of Automotive Engineering,Jilin University,Changchun 130025,2.FAW-Volkswagen Automotive Company,Changchun 130011 |
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| Abstract: | A test bench and its control system are established for EA888 direct injection gasoline engine,and an experimental study is conducted on the rule of the effects of excess air coefficient and the fuel proportion ratio in two-stage fuel injection on the light-off characteristics of catalytic converter.The results show that a slight-lean mixture is conducive to the rapid light off of catalytic converter,and two-stage injection helps delay ignition,raise exhaust temperature and shorten the light-off time of cat... |
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| Keywords: | gasoline direct injection engine catalyst light-off two-stage fuel injection |
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