| 轻型汽油车N_2O排放特性研究 |
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| 引用本文： | 秦宏宇,王玉伟,刘乐.轻型汽油车N_2O排放特性研究[J].车用发动机,2017(6):71-74. |
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| 作者姓名： | 秦宏宇 王玉伟 刘乐 |
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| 作者单位： | 中国汽车技术研究中心汽车试验研究所 ,天津,300300 |
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| 摘 要： | 选择1辆满足国Ⅴ排放标准的轻型汽油车作为试验样车,应用全流稀释排放测试系统在FTP75和US06测试循环下,对车辆在不同测试工况下的N_2O排放水平、车辆N_2O排放的影响因素以及N_2O排放随着车辆里程增加的劣化情况进行了研究。研究结果表明:FTP75循环下的N_2O排放结果高于US06循环,前者是后者的4倍左右;在冷起动阶段,由于催化剂没有达到正常的工作温度,车辆会产生较多的N_2O排放,且随着燃油硫含量的增加,车辆的N_2O排放呈现上升的趋势;随着车辆里程的不断增加,车辆的N_2O排放存在一定程度的劣化。
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| 关 键 词： | 轻型汽车 氮氧化物 排放测量 |
N2 O Emission Characteristics of Light-duty Gasoline Vehicle |
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| Abstract: | The N2O emission level ,its influencing factors and its deterioration with driving mileage were analyzed by conduc -ting FTP75 and US06 test cycles with full flow dilution system on a light-duty gasoline vehicle meeting China V emission standard .The results show that the N2O emission of FTP75 is about three times higher than that of US06 .More N2O emission produces during the cold start phase because the reaction temperature of catalyst cannot be met and become more severe with the increase of sulfur content .Besides ,N2O emission may also become worse with the increase of vehicle mileage . |
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| Keywords: | light-duty vehicle nitrogen oxide emission measurement |
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