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동적유동모사장치를 이용한 PZEV 기준 대응용 배기계의 유동 분포 측정을 위한 실험적 연구
김인수(Insu Kim),명차리(Cha-Lee Myung),박심수(Simsoo Park),인치범(Chi-Bum In),여권구(Gwon koo Yeo) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
As the current and future automobile emission regulations become stringent, the research of exhaust manifold and CCC has been the interesting and remarkable subject. The design of a CCC manifold is a formidable task due to the complexity of the flow distribution caused by the pulsating flows that are emitted by the exhaust ports. Measurement of flow distribution can be done with computational fluid dynamics (CFD). However, such simulations must be verified with selected experimental data. In this study, conventional casting type and stainless steel bending type of a 4-cylinder engine(with 900 cell CCC system) was performed to investigate the flow distribution of exhaust gases. Pressure was measured using simulated dynamic flow bench and 5-hole pitot probe. And then the flow uniformity of bending type exhaust manifold compared with that of the casting type. Based on the experimental data, this study verified exhaust system optimization for the better use of catalytic converter.