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[가솔린엔진부문] 스파크플러그 이온프로브를 이용한 직접분사식 가솔린엔진에서의 연소안정성에 관한 연구
박종일(Jongil Park),박기원(Kiwon Park),전광민(Kwangmin Chun) 한국자동차공학회 2000 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
There arc two type of injection mode in direct injection gasoline engine. One is homogeneous mode that is used in high load operation and the other is stratified mode that is used in part load operation. In stratified operation, the AIF in the vicinity of the spark plug is the most important and has significant effects in combustion stability.<br/> In this study, the relation ship between the magnitude of ion probe signals and combustion stability in stratified operation was found by the analysis of ion probe signals using spark plug itself as an ion probe.<br/> In stratified combustion, the magnitude of ion probe signals was higher than that in the homogeneous combustion at the same condition because the pressure and temperature in stratified operation was higher that in homogeneous operation. It could be found that the magnitude of the measured ion probe signals is directly proportional to the combustion stability in stratified operation and the magnitude of ion probe signals was increased as ignition timing was advanced.<br/>
고급차(제네시스), 고성능차(N) 상품성 확보를 위한 엔진 감성 성능 개발
박종일(Jongil Park),최관희(Kwanhee Choi),임현준(Hyunjun Lim),박종국(Jonguk Park),이춘식(Chunsik Lee),김영권(Youngkwon Kim),김명훈(Myunghoon Kim) 한국자동차공학회 2018 한국자동차공학회 부문종합 학술대회 Vol.2018 No.6
Since Hyundai Motor company developed first new alpha engine, HMC has focused to get higher engine performance and better fuel economy. Recently HMC is preparing to enter new high performance , luxury market. To achieve success in that market, powertrain developments are also required to have different approaches. In this study, to satisfy our new customer’s need, two major engine control logic has been developed and applied. One is making after-burn sound and the other is developing launch control with turbocharger pre-charging. The result of two development were impressive in term of customer emotional satisfaction and will be applied to mass production vehicle.
박종일(Jongil Park),최성욱(Sungwook Choi),김진원(Jinwon Kim) 한국자동차공학회 2012 한국자동차공학회 학술대회 및 전시회 Vol.2012 No.11
엔진 흡기과정에서 실린더 내부 유동특성은 연소특성 및 엔진성능에 많은 영향을 준다. 엔진 효율상승을 위해서는 흡기포트 유동특성을 정확히 예측하여 실린더 내부에 많은 공기가 유입될 수 있는 유동손실이 적은 흡기포트의 설계가 필요하다. 본 연구에서는 엔진 흡기포트 내부의 유동을 파악하기 위해서 상용 삼차원 Navier-Stokes 방정식 코드인 Fluent를 이용하여 전산유체해석을 수행하고 해석의 신뢰성을 검증하기 위하여 유동 실험으로 결과를 비교하였다. 검증된 해석 기법을 이용하여 흡기포트의 주요 형상 변수에 대하여 중심합성법을 이용하여 다양한 경우에 대하여 해석을 수행하고 반응면기법을 이용하여 흡기포트의 유량계수가 최대화되는 최적의 형상을 도출하였다.