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近20年来,苏联在降低城市运输车辆噪声方面作了大量工作。如贯彻实施汽车内外噪声限额、国家标准(ГОСТ)和统一要求。由于开展多种科学研究和不断改进结构,1982年前,苏联汽车制造者已将货车外部噪声级降低了3～4分贝(A),将客车和轿车的外部噪声级降低了5～6分贝(A)。据苏联国家汽车与汽车发动机科学研究所提供的数据,苏联汽车的外部噪声级已达到苏联国家标准ГОСТ19358—74的要求,该标准与1982年生效的联合国欧洲经济委员会(以下简称欧经会)第9号国际规则相一致。根据要求,苏联在第12个五年计划期间出厂的汽车,应符合欧经会第51号规则的规
For nearly two decades, the Soviet Union has done a great deal of work to reduce the noise of urban transport vehicles. Such as the implementation of noise limits within and outside the car, the national standard (ГОСТ) and uniform requirements. As a result of a variety of scientific research and continuous improvement of the structure, by the year of 1982, the Soviet car manufacturers have reduced the external noise level of trucks by 3 to 4 dB (A) and reduced the external noise level of buses and cars by 5 to 6 dB A). According to the data provided by the National Institute of Automotive and Automotive Engine Science of the Soviet Union, the external noise level of the Soviet automobile has reached the requirements of the national standard ГОСТ 19358-74 of the Soviet Union, which is in line with the requirements of the UN Economic Commission for Europe (ECE) 9 international rules consistent. On request, the cars manufactured by the Soviet Union during the 12th 5-year plan should comply with the rules of the ECE Rule 51