知识与财富的链接
采用高效液相色谱方法(HPLC)对甲醇车的醛酮类污染物进行了定量定性研究.结果发现,瞬态时,安装三元转化器后燃烧汽油和甲醇车辆的总醛酮排放量转化效率分别为22.53%和48.95%.燃烧甲醇时,排放的主要是甲醛、乙醛和丙烯醛+丙酮,占总排放的97.18%,占燃烧汽油时排放的39.07%.未装三元催化器时,甲醇车的醛酮排放量高于汽油车,有三元催化器时甲醇车的醛酮排放量低于汽油车排放.稳态工况时,安装和未装三元催化器的甲醇车,在60 km/h工况下醛酮类污染物排放量最高,甲醛的平均转化效率最高,为88.50%.无论装载三元催化器与否,甲醇车的甲醛排放量均高于同工况的汽油车,在60、90和120 km/h 3个工况下,甲醇车的甲醛排放量分别比汽油车高332.94%3、74.47%和357.58%.
Investigation on the character and quantity of aldehydes and ketones emitted from methanol vehicle was implemented respectively by using high performance liquid chromatograph(HPLC) method.Experiments of vehicles equipped with and without three-way catalyst(TWC) under transient and steady mode were carried out.The emission results were compared with that of gasoline vehicle.The data showed that the efficiency of aldehydes and ketones emitted from methanol vehicle and gasoline vehicle were 22.53% and 48.95% w...
