摘要
某试验车型在怠速和N档全油门工况下排气口噪声很明显,对车内噪声影响很大,怠速排气口和车内55 Hz对车内整体声压级贡献较大.应用比利时LMS公司的Test.Lab对上述问题进行了实验测试分析,通过更换不同状态的样件进行对比测试.结果表明:N档全油门加速行驶中,排气口噪声2阶对车内噪声2阶贡献很大,降低排气口噪声2阶声压级对车内噪声改善很明显.
There was obvious noise in the vent when an experimental model working in idle speed and N file a full throttle ,which affected interior noise greatly. The idle vent and vehicle 55 Hz in vehicles made a significant contri- bution to overall sound pressure level. The Belgian LMS company Test.Lab was applied to test and analyze above problems through comparison test of samples in different states. The results showed that vent noise 2 order made a great contribution to interior noise order 2 when N file sped up the full throttle, therefore the reduction of vent noise 2 order pressure level could improve interior noise environment.
出处
《广西工学院学报》
CAS
2012年第3期26-31,共6页
Journal of Guangxi University of Technology
基金
广西自然科学基金项目(2012GXNSFAA053207)资助
