某SUV格栅啸叫声试验研究
2021-01-16黄晓胜周万田宋俊叶斌
黄晓胜 周万田 宋俊 叶斌









黄晓胜
毕业于同济大学车辆工程专业,学历硕士,现就职于广汽研究院,任风噪NVH工程师。
摘要:当汽车高速行驶时,风噪声对车内的影响将会超过路噪与动总噪声,成为最主要的噪声源。风噪声的构成复杂,在各种风噪声中,乘客对气动啸叫声的感知尤为明显。某纯电SUV在研发过程中出现高频啸叫声问题,本文以此为背景,通过道路试验的手段针对该问题采集车内外啸叫声相关声场信号;经过声源定位、问题解析、机理分析明确了啸叫声的来源及其幅频特性,找到了影响啸叫声大小的关键参数;基于此对格栅肋条结构进行优化设计,优化方案经过整车测试验证具有明显效果。
关键词:啸叫声;进气格栅;道路测试;SUV;
中图分类号:U463.4 文献标识码:A 文章编号:1005-2550( 2021) 06-0068-05
Experimental Research on whistle of the Grille of a SUV
HUANG Xiao-sheng, ZHOU Wan-tian, SONG Jun, YE Bin
( NVH Department of GAC R&D, GuangZhou 51140, China)
Abstract: The impact of wind noise inside the car will exceed the road noise and powertrainnoise and become the main noise source on a high-speed road. Passengers' perception ofaerodynamic whistle is particularly more obvious than the others.A high-frequency whistleproblem happened on an electric SUV during the development process. As result of that, thisarticle will research on the problem by road testing. Through sound source localization,problem analysis, mechanism analysis and other methods, the optimization of the grille finstructure for whistle elimination and the scheme will be told. It is showed that the optimizationmethond has obvious effects by vehicle verification.
Key Words: Whistle; Inlet Grille; Road Test; SUV
1 前言
隨着国内汽车行业研发水平的提升,汽车的NVH(噪声、振动及声振粗糙度)性能逐渐成为衡量汽车品质的重要指标之一。汽车行驶时的噪声通常由动力总成噪声、路面及轮胎噪声、风噪声等多个系统噪声组成。这些噪声对车内乘员的影响权重随着车速的提升而改变,当车速达到lOOkm/h以上时,风噪声将逐渐掩盖其他噪声,成为整车最大的噪声源[1]。风噪声的构成复杂,通常包含由外造型引起的脉动噪声、密封不良引起的泄漏声以及车外狭缝空腔结构引起的空腔噪声和啸叫声等。在以上几种风噪声中,啸叫声具有频带窄、幅值大的特性,主观上指向性明显,更容易被消费者感知和抱怨[2],需要在车型研发过程中重点关注和管控。……
