某轻型客车A柱雨檐密封条风噪问题研究与优化
Research and Optimization of A-Pillar Margin Seal Wind Noise Issue on a Light Bus
张东力 1黄超勇 1吴训 1陈慈龙 1袁振松1
作者信息
- 1. 江铃汽车股份有限公司 江西省南昌市 330052;江西省汽车噪声与振动重点实验室 江西省南昌市 330052
- 折叠
摘要
某轻型客车在开发阶段,风噪主观驾评时,发现在100km/h以上时,车内存在明显的"噗噗"低频风噪声,采集车内噪声数据进行分析,分析出"噗噗"声频率位于170-190Hz之间.经问题诊断,锁定"噗噗"声来自于A柱雨檐密封条的唇边处.为解决A柱雨檐密封条风噪问题,首先研究"噗噗"声产生的机理;然后研究增大前门与A柱面差、增大A柱雨檐密封条唇边密度、减短雨檐密封条唇边长度等方案;紧接着分析上述几种方案的实施情况,确定实施前门与A柱设计面差增大至3mm的方案;最后进行经验总结,制定设计标准,避免后续新车型开发过程中出现A柱雨檐密封条风噪问题.
Abstract
In the subjective driving evaluation of wind noise in the development stage of a light bus,it was found that there was obvious low-frequency wind noise in the car when it was above 100km/h.The noise data in the car was collected and analyzed,and the sound frequency of"pupu"was between 170-190Hz.According to the diagnosis of the issue,the"pupu"sound comes from the lip of the A-pillar margin seal.To solve the issue of wind noise of A-pillar margin seal,the mechanism of"pupu"sound was studied first.Then,some schemes are studied,such as increasing the flushness between front door and A-pillar,increasing the density of the lip of A-pillar margin seal,and reducing the length of the lip of the A-pillar margin seal.Then the implementation of the above schemes is analyzed,and the scheme that the nominal flushness between the front door and the A-pillar increases to 3mm is determined to be implemented.Finally,the experience is summarized and the design standards are formulated to avoid the wind noise issue of A-pillar margin seal in the subsequent development process of new models.
关键词
轻型客车/风噪/雨檐密封条/A柱/前门/面差Key words
light bus/wing noise/margin seal/A-pillar/front door/flushness引用本文复制引用
出版年
2023
NETL
NSTL
维普
万方数据