主办：陕西省汽车工程学会
ISSN 1671-7988  CN 61-1394/TH
创刊：1976年
汽车实用技术

汽车实用技术 ›› 2022, Vol. 47 ›› Issue (1): 65-68.DOI: 10.16638/j.cnki.1671-7988.2022.001.015

• 设计研究 • 上一篇    

轿车衣帽架钣金处声学包的优化设计

孟 姝   

  1. 沃尔沃汽车技术（上海）有限公司
  • 出版日期:2022-01-15 发布日期:2022-01-15
  • 通讯作者: 孟 姝
  • 作者简介:孟姝（1987—），女，硕士，就职于沃尔沃汽车技 术（上海）有限公司，研究方向：整车 NVH 性能。

Sound Pack Optimization Design for Sedan Automobile Parcel Shelf Panel

MENG Shu   

  1. Volvo Car Technology (Shanghai) Company
  • Online:2022-01-15 Published:2022-01-15
  • Contact: MENG Shu

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摘要： 目前，汽车的 NVH 性能受到越来越多消费者的关注，而电动汽车的蓬勃发展也为 NVH 性 能设计带来了新的挑战，尤其是高频噪声带来的挑战。因此，应对高频噪声的声学包的优化设计 便尤为重要。文章通过对某三厢电动车进行路试评价，得到后排乘客抱怨来自衣帽架处的高频噪 声的结论，进而进行了密封测试，传递函数测试以及对噪声路径进行分析优化设计。结果表明， 若要降低来自衣帽架处的高频噪声，首先要密封住车内噪声传递路径上多余的孔洞，其次要减小 必要的总开孔面积。最后在布置空调通风孔位置时，提出优化设计噪声路径，使噪声在吸音棉上 的有效路径最长来达到优化声学包的目的。

关键词: 电动汽车；声学包；衣帽架钣金；空调通风孔

Abstract: At the moment, more and more customers pay attention to NVH performance in automobile. With the development of electric automobile, there is more challenge for NVH performance, especially for high frequency noise. So it is quite important for sound pack optimization in electric automobile. By evaluation of an electric sedan car on the road, there is a passenger complaint for rear seat high frequency noise, which comes from parcel shelf. Based on above information, it does tightness test and transfer test, and optimize noise path. Test result shows that in order to decrease high frequency noise, first, it needs to seal unnecessary holes on the path of noise transfer inside the car. Second, it needs to decrease necessary hole size on the parcel shelf. Finally, when arranging ventilation evacuation holes, it proposes to optimize and design air path to make noise path longest in absorption material.

Key words: Automobile; Sound pack; Parcel shelf panel; Ventilation evacuation holes