某发动机冷却风扇噪声传递路径贡献量测试分析  

Measurement and Analysis of Noise Transfer Path Contribution of an Engine Cooling Fan

作　　者：王朝建 Wang Chaojian(Hunan Intelligence Automobile Co.,Ltd.,Hunan Zhuzhou 412007)

机构地区：[1]湖南智点智能新能源汽车有限公司

出　　处：《汽车实用技术》2020年第2期59-61,共3页Automobile Applied Technology

摘　　要：某发动机冷却风扇存在明显的阶次噪声,冷却风扇噪声传递到车内主要有空气传递和结构传递两条路径。分析结果表明冷却风扇噪声随着转速的增加而增大,且在不同转速区间内,结构传递和空气传递贡献量不同。文章的研究对冷却风扇的阶次噪声控制具有重要意义。There is obvious order noise in an engine cooling fan,and the cooling fan noise is transfered to the vehicle mainly through two paths of air transfer and structural transfer.The analysis results show that the cooling fan noise increases with the increase of the rotational speed,and the contribution of structural transmission and air transmission is different in different speed ranges.The research of this paper has great significance to control the order noise of cooling fans.

关 键 词：冷却风扇 传递路径 阶次噪声 贡献量 

分 类 号：U463.13[机械工程—车辆工程]