Proceedings of the KSME Conference (대한기계학회:학술대회논문집)
- 2001.11b
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- Pages.682-687
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- 2001
The Effect of Exhaust Performance by according to Active Muffler Valve Spring
능동형 소음기의 밸브 스프링이 배기 성능에 미치는 영향
- Kong, T.W. ;
- Yi, C.S. ;
- Chung, H.S. ;
- Jeong, H.M. ;
- Suh, J.S. ;
- Chun, Y.H.
- 공태우 (경상대학교 대학원) ;
- 이중섭 (경상대학교 대학원) ;
- 정한식 (경상대학교 수송기계공학부) ;
- 정효민 (경상대학교 수송기계공학부) ;
- 서정세 (경상대학교 수송기계공학부) ;
- 전영흥 (경상대학교 수송기계공학부)
- Published : 2001.11.01
Abstract
This study represents effect of exhaust performance by according to active muffler valve spring. The experimental parameter were divided engine speed and torsion coil spring constant. The sound pressure level was generally low at engine speed 2000-2500rpm but That was showed the lowest at spring constant k=0.75. Flow speed of exhaust gas was showed the fast at spring constant k=0.75 but the low value was showed at k=0.97. It was contained a rather low concentration of carbon monoxide(CO) at engine speed 2000-2500rpm and k=0.81, low concentration of hydrocarbon(HC) at spring constant k=0.81 but that was high at spring constant k=0.97. A conclusion based on FFT analysis was generally low concentration value at k=0.79 and k=0.81. The temperature distributions into the muffler was shown similar conditions. Heat transfer was well spreaded at thermocouple No.8 because valve was opened.