摘要
汽车空气滤清器工作时,容易受到发动机等运动部件的激励,产生有害振动,传播辐射噪声。提升空滤的模态性能可以遏制振动与噪声的传播,一般情况下,主机厂要求空滤的一阶固有频率达到250Hz。文章以某车型空滤器性能优化为例,对空滤器进行了模态仿真,分析模态振型,通过调整上下壳体连接位置、合理布置加强肋、更改壳体材料等方法对空滤壳体模态进行了优化,使空滤器模态性能最终达到主机厂要求。
The air filter is easily affected by the engine’s excitation in its working process,which produces harmful vibrations and spreads radiated noise.Improving the modal performance of air filter can restrain the propagation of vibration and noise,generally,the manufacturer requires the first-order natural frequency of air filter to reach 250 Hz.This paper takes the optimization of the air filter performance as an example,modal simulation of the air filter was carried out,the modal vibration mode was analyzed,and the air filter was optimized by adjusting the connection position of the upper and lower shells,reasonable arranging the ribs,and changing the air filter material to make the air filter modal performance finally reaches the requirements of the manufacturer.
作者
白子琦
李光武
Bai Ziqi;Li Guangwu(Brilliance Auto R&D Center,Powertrain Integrated Technology Section,Liaoning Shenyang 110141)
出处
《汽车实用技术》
2020年第21期46-48,共3页
Automobile Applied Technology
关键词
空气滤清器
模态分析
固有振动
固有频率
Air filter box
Modal analysis
Natural vibration
Natural vibration frequency
