汽油机高速异响噪声和低频共振

Noise and Low-Frequency Resonance in A Gasoline Engine during High Speed

通过对某汽油机高速异响噪声的测试和分析表明,正时齿轮传动和气门落座是导致产生高速异响噪声的两个主要激振源。对此两项高速异响噪声产生的机理进行了较为深入的分析,并找出了高速异响低频共振体。

Based on the measurements and analysis on noise of a certain gasoline engine during high speed, it is clarified that two major vibration sources causing engine noise during high speed are timing gear transmission and valve bounce.In this paper the mechanism of both kinds of noise is seriously analysed, and the low-frequency resonators caused high speed noise are found out.