某车型防火墙总成隔声性能的优化改进  

Optimization and Improvement of Sound Insulation Performance of Firewall Assembly of A Vehicle Model

作　　者：刘秀影 王宇 黄忠华 宋建新 朱琳 赵飞 Liu Xiuying;Wang Yu;Huang Zhonghua;Song Jianxin;Zhu Lin;Zhao Fei(Foton Research&Development Institute,Beijing 102206)

机构地区：[1]北汽福田汽车股份有限公司工程研究总院,北京102206

出　　处：《汽车工艺与材料》2025年第2期47-52,共6页Automobile Technology & Material

摘　　要：前围内隔音垫是汽车防火墙总成的重要隔音部件,研究了不同的前围内隔音垫材料、覆盖率、软层厚度分布、过孔本体隔声、附件安装工艺特征等对防火墙总成隔声性能的影响。通过选取合适的材料组成及软层厚度、提高隔音垫覆盖率、提高过孔本体隔声、降低泄漏量等手段实现对某车型防火墙总成隔声性能的优化改进。The inner-dash sound insulation pad is an important part of the automobile firewall assembly.This paper studies the influence of different sound insulation pad materials,coverage rate,thickness distribution of soft layer and installation process characteristics of accessories on the sound insulation performance of the firewall assembly.The sound insulation performance of the firewall assembly of a vehicle model is optimized and improved through selecting appropriate material composition and soft layer thickness,improving the coverage rate of the sound insulation pad,and reducing the leakage amount.

关 键 词：防火墙总成 隔声量 前围内隔音垫 

分 类 号：U463.82[机械工程—车辆工程]