|Title||박영수, 배충식, “고압/저압 EGR 공급 비율에 따른 디젤 엔진의 연소 및 배기 특성”, 한국자동차공학회논문집, Vol. 22, No. 7, pp.90-97, 2014.|
박영수, 배충식, “고압/저압 EGR 공급 비율에 따른 디젤 엔진의 연소 및 배기 특성”, 한국자동차공학회논문집, Vol. 22, No. 7, pp.90-97, 2014.
The effects of high pressure and low pressure exhaust gas recirculation (HP/LP EGR) portion on diesel engine combustion and emissions characteristics were investigated in a 2.2 L passenger-car diesel engine. The po3rtion of HP/LP EGR was varied from 0 to 1 while fixing the mass flow rate of fresh air. The intake manifold temperature was lowered with the increasing of the portion of LP EGR, which led to the retardation of heat release by pilot injection. The lowered intake manifold temperature also resulted in low nitrogen oxide (NOx) emissions due to decreased in-cylinder temperature and prolonged ignition delay, however, the carbon monoxide (CO) emission showed opposite trend to NOx emissions. The brake specific fuel consumption (BSFC) was decreased as the portion of LP EGR increased due to lowered exhaust manifold pressure by wider open of turbocharger vane. Consequently, the trade-off relationship between NOx and BSFC could be improved by increasing the LP EGR portion.
|Previous||정진영, 오희창, 배충식, “분사조건에 따른 가솔린 직접분사용 다공 분사기에서의 LPG 분무특성”, 한국액체미립화학회 학술강연회 논문집, vol. 19, no. 1, pp1-8, 2014. 3|
|Next||김재헌, 박현욱, 배충식, “ECN 연구용 고온 고압 정적 연소실에서의 n-dodecane 분무 및 연소 특성”, Vol. 19, No. 4, pp188-196 2014.|