| 改善二甲醚发动机燃油经济性的试验研究 |
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| 作者姓名： | 吴君华 张光德 |
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| 作者单位： | 南京林业大学汽车与交通工程学院,江苏 南京,210037,武汉科技大学汽车与交通工程学院,湖北 武汉,430081 |
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| 基金项目： | 国家自然科学基金资助项目(50975212)；湖北省自然科学基金资助项目(2015CFA113). |
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| 摘 要： | 为改善二甲醚发动机的燃油经济性,在一台直喷二甲醚发动机上进行台架试验,研究燃料供给系统结构参数以及往二甲醚里添加高热值的液化石油气(LPG)对二甲醚发动机经济性的影响。结果表明,适当增大喷射泵的柱塞直径、增加喷嘴喷孔数目并减小喷孔尺寸以及往二甲醚里掺混质量分数为30%的LPG燃料均能有效改善二甲醚发动机的燃油经济性。
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| 关 键 词： | 二甲醚发动机 燃油经济性 燃油消耗率 结构参数 二甲醚 LPG |
| 收稿时间： | 2015/10/27 0:00:00 |
Experimental study on improving fuel economy of DME engine |
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| Authors: | Wu Junhua and Zhang Guangde |
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| Institution: | College of Automobile and Traffic Engineering, Nanjing Forestry University,Nanjing 210037,China and College of Automobile and Traffic Engineering,Wuhan University of Science and Technology, Wuhan 430081,China |
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| Abstract: | In order to improve the fuel economy of the dimethyl ether (DME) engine, bench tests were conducted on a direct injection DEM engine. The influences of parameters of DME fuel supply system and addition of high heat value liquefied petroleum gas(LPG) content in blended fuel on the fuel economy of the DME engine were investigated. The results show that the fuel economy of the DME engine has been improved with the increase of plunger diameter, the increase of orifice number and the decrease of hole diameter of injector nozzle at the same time, and the use of DME-LPG blended fuel with 30% LPG. |
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| Keywords: | DME engine fuel economy brake specific fuel comsumption structure parameter DME LPG |
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