摘要
作者以某4缸发动机为例,采用声压测试的方法,通过对发动机上安装和未安装风 扇时的噪声进行了试验比较。试验结果表明,风扇噪声主要是宽频带噪声,并得出了在不同频 率范围风扇噪声对发动机噪声的影响。
Taking a four-cylinder engine as an example, the comparison is made between the engine with and without a fan engine in the experiment by using the acoustic pressure testing. From the result, we know the fan noise is mostly a width frequency noise, then obtain the effect of the fan noise on the engine noise in the different frequency range.
出处
《内燃机工程》
EI
CAS
CSCD
北大核心
2004年第6期52-54,共3页
Chinese Internal Combustion Engine Engineering
关键词
内燃机
风扇噪声
发动机噪声
声压测试
Acoustic noise
Engine cylinders
Fans
Pressure measurement
