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The Design Technique for Reducing the Intake Noise of Vehicle (Part I)

자동차 흡기소음저감을 위한 설계기법에 관한 연구

  • Oh, Jae-Eung (Dept. of Mechanical Engineering, Hanyang University) ;
  • Han, Kwang-Hee (Dept. of Precision Mechanical Engineering, Hanyang University) ;
  • Lee, Kyu-Tae (Dept.of Mechanical Engineering, Chosun University)
  • 오재응 (한양대학교 기계공학부) ;
  • 한광희 (한양대학교 대학원 정밀기계공학과) ;
  • 이규태 (조선대학교 기계공학부)
  • Published : 1997.10.01

Abstract

The intake noise, a major source of vehicle noises, has rapidly become a noticeable, and has been studied to reduce the level. Traditionally, the intake system has been developed through a experiment, namely, the trial and error process. This approach requires very high cost and long time consuming to develop the system. Recently, FEM and BEM are becoming useful in analysis of the intake system, and te results of analysis are very valid. But because these techniques also require high cost and long analysis time, these are generally not practical tool at the early stage of the development of an intake system. In this study, the software was developed to predict and analyze the acoustic characteristics of an intake system. It was based on the Transfer Matrix Method and operated to analyze a simplified intake system in a personal computer. It can be used early in the design stage of development of the intake system. This study presented an improvement to reduce the level of an intake noise. It was to select the optimum position of a resonator and verified by NIT/SYSNOISE, FE analysis commercial software, and testing a prototype.

Keywords

Intake Noise;Transmission Loss;Transfer Matrix Method;Two-Microphone Method;Acoustic Finite Element Analysis

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