车用乙醇汽油使用运程中特征污染物排放污染变化分析

Analysis of Released Pollution of Characteristic Pollutant during Making Use of Motor Gasohol

通过对多种车型的汽油车采取集中封闭运行、多台仪器同时监测的方法,测量出机动车分别在高怠速和低怠速下更换车用乙醇汽油前后尾气中一氧化碳、碳氢化合物、苯系物、醛类和酮类等浓度的变化及净化效率。总结得出车用乙醇汽油使用运行中特征污染物变化规律是一氧化碳、碳氢化合物、苯系物和酮类等排放浓度有所降低,但是醛类污染物排放浓度大幅度升高,有可能成为更换乙醇汽油后汽车尾气中的主要污染物之一。

We adopt a method latch up runing and monitoring one motor with many instruments,and we measure the changes of motor tail_gas in the denisty,and clarify rate of CO,carbon monoxide,carhohydrate,benzene departe res,aldehyde category and ketone between before and after making use of motor gasohol at high idle spead and low idle speed,obtain a regular pattern of motor gasohol that is,while the denisty is lowed in CO,carbon monoxide,benzene departe res,ketone the denisty is raised in one of the main pollutant in tail_gas after making use of motor gasohol.