降低车内噪声试验控制  

Experiment on Vehicle's Interior Noise Control

作　　者：王文彬[1] 赵伟丰[1] 孙飞[1] 姚婵娟[1] 

机构地区：[1]长城汽车股份有限公司,河北省汽车工程技术研究中心,河北保定071000

出　　处：《噪声与振动控制》2014年第2期80-83,102,共5页Noise and Vibration Control

摘　　要：密封性及声学包性能的好坏,直接影响车内NVH水平。针对某款车怠速车内噪声大、车内声品质差问题,运用噪声源分离试验方法,识别出发动机噪声是车内主要的噪声源。通过对前围孔洞进行密封性改进和对传播路径进行声学包改进,有效阻隔了发动机噪声,有效提高车内声品质。Sealing and sound-package performances can directly affect the NVH level inside cars. In this article, the problem of the high interior noise and the poor sound quality of a car at idling is studied. Using noise source separation testing method, the engine noise is found to be the main noise source inside the car. Through the dash- hole sealing improvement and sound-package improving of the noise propagation path, the engine noise is blocked and the interior sound quality is improved effectively.

关 键 词：声学 密封性 声学包 车内噪声 声品质 噪声源识别 

分 类 号：U491.91[交通运输工程—交通运输规划与管理]