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按国标GB1495－79。机动车辆允许噪声》中规定：东风5吨载重汽车的噪声限值为86dB（A）．随着国内外对环保要求的提高和噪声法规将加严的趋势，对汽车的允许噪声也将更加严格．东风汽车公司技术中心对东风EQ1090汽车的声源进行分解，以及利用先进的声强方法和其他手段对EQ1090
According to national standard GB1495-79. Motor vehicles allowed noise "provides: Dongfeng 5 ton truck noise limit of 86dB (A). With the improvement of environmental protection requirements at home and abroad and the tightening trend of noise regulations, the allowable noise to automobiles will also be more stringent. Dongfeng Motor Technology Center Dongfeng EQ1090 car’s sound source decomposition, as well as the use of advanced sound intensity method and other means of EQ1090