汽车空调系统拍频现象引起的车内噪声研究与解决.pdf

文档介绍：2009 年 LMS 中国用户大会论文集

汽车空调系统拍频现象
引起的车内噪声研究与解决
朱卫兵李宏庚
(上汽通用五菱汽车股份有限公司广西柳州 545007)


[摘要] 汽车室内噪声是汽车 NVH 的主要内容。引起车内噪声的因素很多,主要有发动机噪声、进排气噪声、传动系噪
声以及高速行驶时的风噪声等等;汽车空调系统在工作时也会产生非常明显的车内噪声,而且其产生的噪声相对容易被乘员
辨识。空调系统压缩机、蒸发器、鼓风机及管路系统有轻微噪声是正常的,但是如果噪声过大或存在异响,就说明空调系统
有故障,需要及时处理。本文针对国内某款微型面包车在开发过程中出现空调系统拍频异响问题,采用分别运转法、频谱分
析法等将存在的异响问题解决,从而降低汽车车内噪声,同时也为汽车工程技术人员 NVH 开发提供借鉴。
关键词:汽车NVH 速比压缩机发电机拍频
The Analysis and Solution on the Automobile Interior Noise
Caused by Air Conditioning Beat-frequency
ZHU Weibing,LI Honggeng
(SAIC-GM-Wuling Automobile Co,.Ltd., Liuzhou,545007)
Abstract: The interior noise is one of key performances of vehicle NVH. There are many factors for vehicle interior noise, include
engine noise, intake noise, exhaust noise, transmission noise and wind noise on high speed. The vehicle air condition will bring
visible interior noise while it working. And it’s easy to distinguish it on relatively. In air condition system, it’s normal for a little noise
pressor, evaporator, fan and pipeline. But if it exist too big noise, there may be exist some problems in air condition system.
This passage explains how to resolve the problem according to the air condition noise with the method of separate working and
frequency analysis. At the same time it’s a reference to the carmaker’s vehicle NVH develop.
Key words: Vehicle NVH Speed pressor Dynamotor B