醇基汽油合成燃料的NEDC循环排放特性试验分析

Experimental Analysis on NEDC Emission Characteristics of Alcohol-based Gasoline Fuel

随着我国经济的发展,空气污染日益严重,治理大气环境迫在眉睫。为了更好地实现"节能"与"减排",该文在某汽油/压缩天然气(CNG)双燃料整车上,以纯汽油(M0)和CNG燃料为基准,对不同掺混比例的车用醇基汽油合成燃料进行空燃比在化学当量比附近的原机常规排放物对比分析,得到了不同醇基燃料掺混比例对发动机和汽车冷启动过程排放性能的影响。结果表明:排放物排放量与种类随车速和工况变化而变化,且随掺混比例的提高THC和CO排放降低,而NO_x排放增加。

With China＇s economic development, the improvement of the atmospheric environment is imminent due to increasingly serious air pollution. In order to achieve the goal of ＂energy saving＂ and ＂emission reduction＂ better, this paper introduces gasoline and CNG fuel as the benchmark to compare the effects of different blend ratio of alcohol-based vehicle on the comparison of the conventional emissions with the stoichiometric ratio, the effects of different alcohol-based blending ratios on the emission performance of the engine and the vehicle during the cold-start are obtained. The results show that pollutant and emission amount are varied with vehicle speed and working conditions as the blending ratio increases, THC and CO emissions decrease and NOx emissions increase.