| 旁通阀开度对增压中冷CNG发动机性能影响的研究 |
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| 引用本文： | 朱昌吉,王立军,邢喜村,李君,杨立平,贾磊.旁通阀开度对增压中冷CNG发动机性能影响的研究[J].车用发动机,2009(2). |
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| 作者姓名： | 朱昌吉 王立军 邢喜村 李君 杨立平 贾磊 |
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| 作者单位： | 1. 吉林大学汽车工程学院,吉林,长春,130025
2. 第一汽车集团公司技术中心,吉林,长春,130025 |
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| 摘 要： | 采用定油量、定转速、定点火提前角、只改变旁通阀开度的试验方法,研究了不同混合气浓度下旁通阀开度对增压中冷CNG发动机性能的影响。试验结果表明,随着旁通阀开度的增加,排气压力在旁通阀小开度时明显降低,之后下降缓慢。当排气压力减小时,活塞推动气体排出燃烧室的负功减少,扭矩有所提升,燃气消耗率下降,经济性变好,燃气消耗率可降低5%左右。
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| 关 键 词： | 天然气发动机 增压中冷 经济性 旁通阀 |
The Influence of Bypass Valve Opening on Turbocharged and Intercooled CNG Engine Performance |
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| ZHU Chang-ji,WANG Li-jun,XING Xi-cun,LI Jun,YANG Li-ping,JIA Lei.The Influence of Bypass Valve Opening on Turbocharged and Intercooled CNG Engine Performance[J].Vehicle Engine,2009(2). |
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| Authors: | ZHU Chang-ji WANG Li-jun XING Xi-cun LI Jun YANG Li-ping JIA Lei |
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| Institution: | ZHU Chang-ji1,WANG Li-jun1,XING Xi-cun2,LI Jun1,YANG Li-ping1,JIA Lei1(1.College of Automotive Engineering Jilin University,Changchun 130025,China,2.FAW Group Coorporation R&D Centera,China) |
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| Abstract: | The influence of bypass valve opening on turbocharged and intercooled CNG engine performance under different mixture concentration was researched by fixing the injection quantity,the speed,the ignition advance angle and adjusting the bypass valve opening.The results show that the exhaust pressure is obviously decreased and successively slowly reduced with the increase of bypass valve opening when the opening is small.The decrease of exhaust pressure leads to the decrease of negative work that is produced by... |
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| Keywords: | natural gas engine turbocharged and intercooled fuel economy bypass valve |
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