新能源汽车应用对城市声环境影响分析

城市道路交通噪声污染防治压力巨大,目前在贯彻落实我国低碳环保的理念下新能源汽车大力普及推广,新能源车的噪音原理与传统燃油车不同,该文从点、线、面3个角度,根据声能量叠加原理和1小时等效连续A声级,通过现场实测采集内燃机汽车和新能源汽车车外通过噪声样本,并选取城市某区域进行声学模型预测,结合道路车流量等方法,研究新能源汽车比例的变化对区域声环境的影响情况。

There is a great pressure on the prevention and control of urban road traffic noise pollution.At present,under the implementation of the concept of low-carbon environmental protection in China,new energy vehicles are popularized.The noise principle of new energy vehicles is different from that of traditional fuel vehicles.In this paper,according to the sound energy superposition principle and 1 h equivalent continuous A sound level,the passing noise samples of internal combustion engine vehicles and new energy vehicles are collected,and a certain area of the city for acoustic model prediction is selected through on-site measurement,and using road traffic flow and other methods,we studied the impact of the proportion of new energy vehicles on the regional acoustic environment.