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박장혁(Jang-hyuk Park),류명석(Myung-Seok Lyu),구영곤(Yong-Gon Ku) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.6_2
Recently the pass-by noise regulation becomes more strict not only domestically but also internationally. Also, the engine performance can be improved by reduction of back pressure in the exhaust system. But it is difficult to be traded off between accoustic and pressure loss. This paper describes the non-linear pulsating flow in the exhaust system by WAVE, the Ricardo, which is non-linear and one-dimensional simulation program. Based on this analysis recommendations are made to be a compromise between accoustic and engine performance. And it is shown that variations of diameter in the exhaust pipe affects overall performance of the exhaust system design.<br/>