燃料电池车用离心风机噪声特性试验分析  

Tests for noise features of centrifugal blower in a fuel cell vehicle

作　　者：左曙光[1] 范珈璐 韦开君[1] 吴旭东[1] 倪天心[1] 

机构地区：[1]同济大学新能源汽车工程中心,上海201804

出　　处：《振动与冲击》2014年第19期181-186,共6页Journal of Vibration and Shock

基　　金：国家自然基金项目(51375343;51305303);国家重大科学仪器设备开发专项(2012YQ150256)

摘　　要：基于消声室内台架试验,对某企业研发的燃料电池汽车空辅系统内的离心风机进行了噪声特性分析。通过初步预测离心风机噪声并设计试验方案,测量不同稳态和瞬态工况下离心风机的振动和噪声信号。离心风机的噪声主要表现为由风机叶轮、散热风扇等产生的阶次噪声以及由进气湍流、电磁激励等产生的宽频噪声两类,经过对采集的信号进行频谱分析以及阶次分析,明确了其主要的噪声成分是离心风机的进气噪声、风机叶轮和散热风扇的气动噪声。Here,the noise characteristics of a centrifugal blower in air auxiliary system of a fuel cell vehicle were analyzed based on a bench test.By predicting noise,a test scheme was designed clearly.In the test,the vibration and noise signals of the blower under different operational states were measured.It was shown that the main noise of the centrifugal blower consists of the order noise and the broadband noise.Through the spectral analysis and order analysis,it was identified that the inlet noise,and the aerodynamic noise of the drive motor and the blower vane wheel are the main noise sources of the centrifugal blower.

关 键 词：燃料电池汽车 离心风机 NVH 噪声试验 噪声特性分析 

分 类 号：TH432.1[机械工程—机械制造及自动化] U467.493[机械工程—车辆工程]