Research on the noise control of a new diesel engine
A newly developed 6-cylinder diesel engine has high noise and abnormal noise sources,which affects the overall sound quality of the engine.In order to reduce the noise of the whole machine and identify the source of abnormal noise,noise source identification is carried out through shielding method and noise data analysis.The components to which the main noise sources belong,including the intake manifold,pulley,cylinder head cover,oil pan,and gear train,have been identified.Optimiza-tion design was implemented for these components,and after optimization,the overall noise of the engine was significantly reduced,the abnormal noise was completely eliminated,and the overall sound quality was significantly improved.
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