摘要
本研究在发动机加速工况下对消声器进行噪声测试,使用声学有限元软件Virtual.Lab对已选定的消声器进行传递损失计算,在对噪声频谱和传递损失进行分析之后,确定了消声器传递损失需要提高的频谱段,并针对性地给出两种改进方案,比较分析得出较优方案,以满足某汽车生产企业对排气噪声的要求。
In this study, the noise of the muffler is tested under the condition of engine acceleration, and the acoustics finite element software Virtual. Lab is used to calculating the transmission loss of the selected muffler. By analyzing the spectrum and transmission loss, the spectrum segment of the transmission loss of the muffler is determined. Giving two improved schemes in a targeted way, and choice the better one by comparing and analyzing, to satisfy the exhaust noise requirements of a car enterprise.
出处
《汽车实用技术》
2017年第15期111-113,144,共4页
Automobile Applied Technology
关键词
消声器
声学分析
传递损失
muffler
acoustics analysis
transmission loss
