High-performance vehicles with V6 or higher are designed with a dual exhaust system to satisfy both performance and quietness at the same time, and have a confluence geometry for the purpose of stably maintaining the back pressure inside the pipe. The exhaust system generates noise and vibration under the influence of the rotating engine. In particular, in a state such as idling, vibration occurs in a certain frequency range, which may affect the natural vibration of the exhaust system. Therefore, in this study, the optimal shape is proposed by comparing the ignition frequency calculated based on the vibration measurement result in the idle state and the numerical analysis result.

ABSTRACT
1. 서 론
2. 설계 및 수치해석
    2.1 경계조건
3. 실험장치 및 방법
    3.1 진동측정
4. 결과 및 고찰
    4.1 해석결과
    4.2 진동측정 결과
5. 결 론
References

• 강일석(한국폴리텍V대학) | Il-Seok Kang