Unregulated Emissions and Combustion Characteristics of Low-Content Methanol-Gasoline Blended Fuels
Unregulated Emissions and Combustion Characteristics of Low-Content Methanol-Gasoline Blended Fuels
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DOI：
10.1021/ef900974p
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发表时间：
2010-02
期刊：
影响因子：
5.3
通讯作者：
Z. Fan;Z. Xia;Shuai Shijin;Xiao Jianhua;W. Jianxin
中科院分区：
文献类型：
--
作者：
Z. Fan;Z. Xia;Shuai Shijin;Xiao Jianhua;W. Jianxin
来自甲醇汽油发动机的不受管制的排放物（例如甲醇和甲醛）是关于在常规汽油发动机中使用低含量甲醇应用的最严重问题之一。汽油、M10、M15、M20和M30在进气道燃料喷射（PFI）汽油发动机EQ491i中用作燃料而不进行任何修改。在发动机台架上对发动机的负荷性能进行了测试。使用傅里叶变换红外（FTIR）光谱仪测量了常规三效催化剂前后的非管制排放。试验结果表明，低掺量甲醇汽油混合燃料对发动机的动力性和能耗影响较小。缸内压力和放热率随混合燃料中甲醇含量的增加无明显变化。而甲醇和甲醛作为非常规排放物，随甲醇含量的增加几乎呈线性增加，而乙醇和甲醛则随甲醇含量的增加而增加。
Unregulated emissions, such as methanol and formaldehyde, from the methanol−gasoline engine are one of the most serious concerns regarding the use of low-content methanol applications in conventional gasoline engines. Gasoline, M10, M15, M20, and M30 were used as fuels in a port fuel injection (PFI) gasoline engine EQ491i without any modification. The load performances of the engine were tested on an engine test bench. A Fourier transform infrared (FTIR) spectrometer was used to measure the unregulated emissions before and after a conventional three-way catalyst. The test results showed that the low-content methanol−gasoline blended fuels had little influence on the engine power output and energy consumption. The cylinder pressure and heat release rate showed no significant variation with the increase of the methanol content in the blended fuel. However, engine-out methanol and formaldehyde, as unregulated emissions, increased almost linearly with the methanol content in the fuel, while the ethanol and ac...