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一試驗站噪声形成的探討試驗站内的噪声大小,与試驗台上的柴油机的本身噪声和同时試驗的台数成正比。不同类型、結构的柴油机,其噪声級和最高噪声級的頻率范围都各不相同。过去几年中,工厂設計者由于缺少国产各种柴油机的噪声級及其頻率的資料,因而在試驗站噪声防护設計方面感到非常困难。今年春季,有关部門对柴油机噪声进行了一系列的测定与研究工作。我們测定了目前国內产量較大而使用面较广的中等功率的柴油机的噪声,柴油机型号为国产4185型,轉速1500转/分,功率80馬力。从测定結果得知,距汽缸中心500毫米处的最高噪声級为110分
The formation of a test station noise The noise level in the test station, and the test bed on the diesel engine itself is proportional to the number of tests and the number of noise. Different types of diesel engine structure, the noise level and the highest noise level of the frequency range are different. Over the past few years, the lack of information on the noise level and frequency of domestic diesel engines has made it very difficult for plant designers to design noise protection stations. This spring, relevant departments carried out a series of measurement and research work on diesel engine noise. We measured the current domestic production of large and widely used medium-power diesel engine noise, diesel model for the domestic 4185-type, speed of 1500 rev / min, power of 80 horsepower. From the measurement results, the highest noise level 500 mm from the center of the cylinder was 110 points