Zhijun Chen
Abstract
In this paper, 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.
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In this paper, 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.
Key concepts: Noise (video), Acoustics, Range (aeronautics), Automotive engineering, Cylinder, Engineering, Sound pressure, Fan-in