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介绍了某汽油机活塞噪音的分析及解决方案,首先对异响发动机进行了振动测试,通过角度域的分析手段,确定了该噪声为活塞敲缸噪声,通过减小裙部厚度和优化裙部型线,在不减小配缸间隙的情况下消除了该噪声。
This paper introduces the analysis and solution of the piston noise of a gasoline engine. Firstly, the vibration test of the abnormal noise engine is carried out. Through the analysis of angle domain, the noise is determined as knocking noise of the piston. By reducing the thickness of the skirt and optimizing the skirt type The line eliminates this noise without reducing the cylinder clearance.