Experimental Study of Structural Attenuation Value of Off-road Internal Combustion Engine
The structural attenuation curve is extremely important information for the study of combustion noise of an internal combustion engine.Only after obtaining the structural attenuation curve,the combustion noise and mechanical noise can be accurately evaluated.This article describes the experimental and analytical process of obtaining the structural attenuation curve of a four cylinder engine including the calculation theory.After obtaining this structural attenuation curve,a comparison is made between this curve and MFFR.