东风LZ1090D柴油载货汽车噪声分析及降噪措施

The Noise Analysis and Reduction Measure for Diesel Truck Model Dongfeng LZ1090D

对LZ1090D型车噪声测试分析后,采用隔声屏技术,整车加速行驶车外噪声下降2.7dB(A),已在国标限值以下。

On the basis or noise test and analysis ror the truck,a sound insulation shield has been adopted.In this way the noise level emitted by the truck in accelerating mo- tor decreased by 2.7 dB(A) and dropcd within the limit of national standard.