按国家标准GB1405—79《机动车辆允许噪声中规定,东风五吨载重汽车的噪声限值为86dB(A)。随着国內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通过使用先进的声强方法和谱分析手段等对东风EQ1090汽车和部件的声源分析研究,对EQ1090汽车的冷却泵进行了一系列的改进和提高了驾驶室密封性等措施,并使成果成功地应用在EQ1092F车型上,使 According to the national standard GB1405-79 "motor vehicles allowed noise requirements, Dongfeng five-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 Corporation Technology Center through the use of advanced sound intensity methods and spectral analysis methods such as Dongfeng EQ1090 cars and components of the sound source analysis of the EQ1090 cooling pump on a series of improvements and improve the cab sealing and other measures , And the successful application of the results in the EQ1092F models