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随着石油资源的日益减少,醇类燃料作为汽车的代用燃料,在我国有着广泛的应用前景。发动机采用醇类清洁燃料代替传统汽油、柴油虽然降低了传统发动机常规排放污染物的含量,但它们的非常规排放污染物(甲醛、乙醛、甲醇、乙醇、1,3-丁二烯、苯等)的排放浓度往往高于传统发动机的排放水平。甲醛是甲醇不完全燃烧的产物,对人体健康和大气环境均存在危害。因此,准确检测发动机掺烧醇类燃料时尾气中的甲醛含量,研究甲醛的生成机理对控制甲醛排放、推广醇类燃料是十分必要的。
With the decreasing of oil resources, alcohol fuel as a substitute fuel for automobiles has a wide range of applications in our country. The engine uses alcohol-based cleaning fuel instead of conventional gasoline. Although diesel oil reduces the conventional pollutants emitted by conventional engines, their unconventional pollutants (formaldehyde, acetaldehyde, methanol, ethanol, 1,3-butadiene, benzene Etc.) emissions concentrations are often higher than the conventional engine emission levels. Formaldehyde is the product of incomplete combustion of methanol, which is harmful to human health and the atmosphere. Therefore, it is very necessary to study the formation of formaldehyde in order to control the emission of formaldehyde and popularize alcohol fuels.