汽油
柴油
柴油颗粒过滤器
微粒
环境科学
压缩天然气
柴油机排气
污染物
空气污染
废气
废物管理
空气质量指数
废气再循环
环境工程
化学
工程类
气象学
有机化学
物理
作者
Sanna Saarikoski,Anssi Järvinen,Lassi Markkula,Minna Aurela,Niina Kuittinen,Jussi Hoivala,Luís M. F. Barreira,Päivi Aakko-Saksa,Teemu Lepistö,Petteri Marjanen,Hilkka Timonen,Henri Hakkarainen,Pasi Jalava,Topi Rönkkö
标识
DOI:10.1016/j.envpol.2024.123665
摘要
Vehicular emissions deteriorate air quality in urban areas notably. The aim of this study was to conduct an in-depth characterization of gaseous and particle emissions, and their potential to form secondary aerosol emissions, of the cars meeting the most recent emission Euro 6d standards, and to investigate the impact of fuel as well as engine and aftertreatment technologies on pollutants at warm and cold ambient temperatures. Studied vehicles were a diesel car with a diesel particulate filter (DPF), two gasoline cars (with and without a gasoline particulate filter (GPF)), and a car using compressed natural gas (CNG). The impact of fuel aromatic content was examined for the diesel car and the gasoline car without the GPF. The results showed that the utilization of exhaust particulate filter was important both in diesel and gasoline cars. The gasoline car without the GPF emitted relatively high concentrations of particles compared to the other technologies but the implementation of the GPF decreased particle emissions, and the potential to form secondary aerosols in atmospheric processes. The diesel car equipped with the DPF emitted low particle number concentrations except during the DPF regeneration events. Aromatic-free gasoline and diesel fuel efficiently reduced exhaust particles. Since the renewal of vehicle fleet is a relatively slow process, changing the fuel composition can be seen as a faster way to affect traffic emissions.
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