Analysis And Assessment Of Contaminations In Sedan Cabins And Purify Strategy

With the development of economic, the volume of car production and sale have been growing rapidly and reach a high-level which means people have to spend an extended period of time in car. The focus range of air quality has been transferred from indoor environment to vehicle cabins. Reports which said in-car air pollution jeopardized human being’s health were common, so called driving symptom is familiar to people. In order to analyze the real situation on air environment of vehicle cabins, this paper studied the characters of vehicle pollution and evaluation methods of air quality. Finally, to ensure a healthy in-car environment some strategies to control and purify the contamination were proposed.First of all, the paper studied domestic and international research results in related area, and summarized the severity, the source characters and the influencing factors of vehicle air pollution, which could help us to realize what contamination is the most common one and how harmful it is. So the directly method to solve the problem will be find.Then the concentration limits of main in-car air contaminations were studied. The suggested dynamic state limits of pollution were proposed refer to the domestic and international relative standards. Under the guidance of these standards, the paper analyzed some evaluation methods to assess the vehicle environment accurately and objectively, such as synthetically index methods, health risk assessment method, grey theory assessment, fuzzy comprehensive evaluation. For instance, the air quality is divided into five level from good to bad, then calculate the concentration of contamination to know which level the circumstance belong to.At last, the concentration of PM2.5, CO2, CO, TVOC in car were detected while the vehicle was driving in various road circumstances and under different ventilation ways. Then the detection results were analyzed to understand how it’s affected by different factors. In addition, some purifying tactics to control the in-car pollution was discussed according to the analysis results.