载货汽车车内噪声的控制

介绍了汽车车内噪声的评价指标和CA1091K2L2型汽车噪声控制的研究成果。车内噪声的控制，应首先考虑抑制发动机的辐射噪声。在驾驶室密封好的前题下，应对透声严重的驾驶室围板和底板采取隔声措施，使车内噪声降到最低程度，然后再考虑吸声材料的使用以及避免驾驶室空腔共振的措施。

Control of Truck Inside Noise

Assessment index of inside noise of motor vehicle and result of noise control study of model CA 1091K2L2 truck are presented. Suppression of radiating noise of engine should be firstly considered in truck inside noise control. Insulating measures should be adopted for excessive sound penetrating cab floor and dash board, in case seal of cab is good,so as to reduce the inside noise to minimum. Then utilising of sound absorbing materials and measures of avoiding empty cavity resonance of cab should be considered.