아이들링 시 배기시스템의 합류 챔버 형상이 소음진동에 미치는 영향
Effect of Junction Chamber Shape of an Exhaust System on Noise and Vibration During Idling
0
조회
0
다운로드
2
인용
0
참고문헌
키워드
초록
It is well-known that the primary role of a vehicle exhaust system is to reduce the exhaust emissions and noise caused by a running vehicle. However, as vehicle exhaust systems are being evaluated and improved in various ways to satisfy consumer needs, technologies for reducing noise and vibration are significantly being developed. The biggest challenge in designing an exhaust system is generating the optimal back pressure and flow velocity for a running vehicle, thereby maximizing the performance, while simultaneously reducing the noise caused by the exhaust emissions. In this study, we designed the junction chamber shapes of various exhaust systems, which are applicable to V6 and above engines, and conducted a CFD analysis of the exhaust gas flowing through an exhaust pipe. In addition, we precisely measured the noise and vibration caused by a vehicle and analyzed the correlation.
Abstract
It is well-known that the primary role of a vehicle exhaust system is to reduce the exhaust emissions and noise caused by a running vehicle. However, as vehicle exhaust systems are being evaluated and improved in various ways to satisfy consumer needs, technologies for reducing noise and vibration are significantly being developed. The biggest challenge in designing an exhaust system is generating the optimal back pressure and flow velocity for a running vehicle, thereby maximizing the performance, while simultaneously reducing the noise caused by the exhaust emissions. In this study, we designed the junction chamber shapes of various exhaust systems, which are applicable to V6 and above engines, and conducted a CFD analysis of the exhaust gas flowing through an exhaust pipe. In addition, we precisely measured the noise and vibration caused by a vehicle and analyzed the correlation.
참고문헌 (11)
- W. W. Pulkrabek, "Engineering Fundamentals of the Internal Combution Engine", pp.262~268 (1997), Prentice Hall
- 이준호, "가솔린 기관의 공회전 시 밸브 타이밍 변경에 따른 잔류가스 유동변화에 관한 해석적 연구", 한국자동차공학회 논문집, 14(6), pp.50~56 (2006), 한국자동차공학회
- 함성훈, "가솔린 기관의 배기밸브 타이밍 변화에 따른 촉매 가열 촉진에 관한 실험적 연구", 한국기계기술학회지, 11(1), pp.1~7 (2009), 한국기계기술학회[DOI]
- K. O. Cha, "A Study on the Characteristics of Pressure Wave Propagation in Automotive Exhaust System", Transactions of KSAE, 4(4), pp.18~26 (1996)
- 김건형, "터보차저 터빈의 회전수 변화에 따른 유동해석", 한국기계기술학회지, 18(5), pp.734~739 (2016), 한국기계기술학회[DOI]
- "ISO 2631-1:1997, Mechanical Vibration and Shock -Evaluation of Human Exposure to Whole-Body Vibration", ~ (1997)
- W. B. Shangguan, "Design method of automotive powertrain mounting system based on vib- ration and noise limitations of vehicle level", Mechanical Systems and Signal Processing, 76-77(8), pp.692~694 (2016)
- "ISO 5128:1980, Acoustics - Measurement of noise inside motor vehicles", ~ (1980)
- A. Putra, "On a simple technique to measure the airborne noise in a car interior using substitution source", Int. J. Vehicle Noise and Vibration, 8(3), pp.279~280 (2012)
- "ISO 5130:2007, Acoustics - Measurements of sound pressure level emitted by statio- nary road vehicles", ~ (2007)
- 정인성, "차량 배기토출음 음질분석에 대한 연구", 한국소음진동공학회논문집, 25(2), pp.90~100 (2015), 한국소음진동공학회[DOI]