Abstract
Keywords:
Vacuum pump, Alternator, DOE
Abstract
Recently one of the automobile customer’s greatest concerns is quietness in a vehicle along with various functional requirements such as comfort, stability, mobility etc. Therefore car makers place more weight on vehicle noise. Especially, in the case of diesel engine, as the noise level of engine becomes more silent by the development engineering technology. The noise of alternator with vacuum pump has been able to be noticed enough becoming issue on vehicles. In this study vacuum pump noise on alternator was identified and classified into five types. DOE applied to induce the statistical analysis result to reduce the vacuum pump noise. It was done by subjective listening. Design and statistical analysis are done with Minitab software. This work provides dominant elements of vacuum pump noise on alternator and can be the basis of further studies.