Study on optimization of vehicle exhaust system noise and hook position based on multi-source experimental data analysis

The exhaust system is one of the main sources of vehicle noise, and the hook position is one of the main factors affecting the exhaust system noise. Therefore, using the data optimization analysis method and optimizing the hook position parameters can improve the acoustic characteristics of the exhaust system and the vehicle ride comfort. In this paper, the method of multi-source test data analysis is proposed to obtain the A-weighted noise data of the exhaust system at different positions of the hook. Then, through preprocessing and regularization calculation and analysis of A-weighted noise characteristic data, the analysis results of multi-source test data with different location parameters are obtained. The noise contribution of multi-source test data analysis of hook C and hook A is 53.4% and 41.2%, while the noise contribution of multi-source test data analysis of hook B and hook D is negligible. Through the analysis and calculation of the multi-source test data of the hook position, the main influence data of the hook position on the noise is obtained, which provides a reference for further optimizing the vehicle exhaust noise characteristic parameters.