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研究表明,汽油车排放细粒子大约是柴油车的3倍,成分更复杂。城市地区汽油车的数量远远多于柴油车。国内外学者对汽车尾气颗粒物的相关研究工作主要集中于柴油机,汽油机排气微粒因为质量浓度较低,其对PM2.5及雾霾的贡献并未受到足够的关注和重视。我国应高度重视汽油车对PM2.5和雾霾天气的影响,在未来汽油车排放法规中,增加对汽油车颗粒物粒子数量的测量及其限值要求,促使汽油车采用更为有效的微粒排放控制技术,以更有效的控制颗粒物总体排放。
Research shows that petrol vehicles discharge fine particles about three times as much as diesel cars and have a more complicated composition. There are far more gasoline cars in urban areas than diesel cars. Domestic and foreign scholars on vehicle exhaust particulate matter related research work mainly focused on diesel engines, gasoline engine exhaust particles because of the lower concentration, PM2.5 and haze contribution has not been enough attention and attention. China should attach great importance to the influence of petrol vehicles on PM2.5 and hazy weather. In the future legislation for petrol vehicle emission, the measurement of the number of particles of petrol vehicles and its limits should be increased so that petrol vehicles adopt more effective particulate emissions Control technology to more effectively control the overall emissions of particulate matter.