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| 喷射参数对二甲醚发动机NO_x排放的影响 | |
| 引用本文： | 张强,李娜,张纪元,冀丽琴,李国祥.喷射参数对二甲醚发动机NO_x排放的影响[J].内燃机工程,2012,33(3):6-9. |
| 作者姓名： | 张强 李娜 张纪元 冀丽琴 李国祥 |
| 作者单位： | 1. 山东大学能源与动力工程学院,济南,250061 2. 山东大学能源与动力工程学院,济南250061;济南大学机械工程学院,济南250022 3. 潍柴动力股份有限公司,潍坊,261001 |
| 基金项目： | 山东省自主创新成果转化重大专项项目，重庆市科技公关计划项目 |
| 摘 要： | 以6105型压燃式二甲醚发动机为对象,研究了喷射系统的喷射压力、喷孔直径和供油提前角对二甲醚发动机外特性NOx排放的影响。试验结果表明:在外特性的整个转速范围内,NOx排放随发动机转速的升高而降低;在发动机转速较低时,NOx排放随喷射压力的升高而降低,高速时则反之;在发动机低速工况下,喷孔直径较小的喷油器NOx排放低,高速时大孔径的喷油器NOx排放低;喷油器针阀开启压力较高时,通过推迟供油提前角来控制NOx排放的效果较好,喷油器针阀开启压力较低时该效果不明显。 |
| 关 键 词： | 内燃机 二甲醚发动机 喷射参数 NOx排放 |
Effect of Injection Parameters on NOx Emissions of DME Engine |
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| ZHANG Qiang , LI Na , ZHANG Ji-yuan , JI Li-qin , LI Guo-xiang.Effect of Injection Parameters on NOx Emissions of DME Engine[J].Chinese Internal Combustion Engine Engineering,2012,33(3):6-9. | |
| Authors: | ZHANG Qiang LI Na ZHANG Ji-yuan JI Li-qin LI Guo-xiang |
| Affiliation: | 1(1.Department of Energy and Power Engineering,Shandong University,Jinan 250061,China; 2.Department of Mechanical Engineering,University of Jinan,Jinan 250022,China; 3.Weichai Power Co.,Ltd.,Weifang 261001,China) |
| Abstract: | Effects of injection pressure,nozzle injection hole diameter and fuel delivery advance angle on NOx emissions were studied on model 6105 compression ignition engine fueled with DME.The experimental results show that NOx emissions decrease with engine speed increasing in whole speed range on full load speed characteristics.In low speed zone,NOx emissions also decrease with injection pressure increasing,while in high speed zone the changing trend reverses.In low speed conditions,smaller injection hole diameter benefits reduction of NOx emissions,while at high speed,larger injection hole diameter does.NOx emissions may also be controlled effectively by retarding fuel delivery advance angle in case of higher injection pressure,but for lower injection pressure the effect becomes weakened. |
| Keywords: | IC engine DME engine injection parameter NOx emission |
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