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정적연소기에서 커먼레일 시스템을 이용한 디젤 분무 및 연소 특생에 관한 연구
전충환(Chunghwan Jeon),정정훈(Jeonghoon Jeong),김현규(Hyunkyu Kim),송주헌(Juhun Song),장영준(Youngjune Jang) 한국마린엔지니어링학회 2010 한국마린엔지니어링학회 학술대회 논문집 Vol.2010 No.10
It is very important to understand the spray characteristics and fuel injection conditions in direct injection diesel engine because the emission gas compositions from diesel engines are related to spray formation processes. The objective of the papers is the characteristics of the behaviour of diesel sprays and combustion. The injection rate measured by the Zeuch's method. In this study, the characteristics of diesel spray and combustion has been studied using a shadowgraph. The numerical study was conducted using a AVL-FIRE.
전충환(Chunghwan Jeon),정정훈(Jeonghoon Jeong),김현규(Hyunkyu Kim),송주헌(Juhun Song),장영준(Youngjune Jang) 한국마린엔지니어링학회 2010 한국마린엔지니어링학회 학술대회 논문집 Vol.2010 No.4
It is very important to understand the spray characteristics and fuel injection conditions in direct injection diesel engine because the emission gas compositions from diesel engines are related to spray formation processes. The objective of the papers is the characteristics of the behaviour of diesel sprays. The injection rate measured by the Zeuch's method. In this study, the characteristics of diesel spray has been studied using a shadowgraph. The non-evaporating diesel spray characteristics such as spray tip penetration and droplet diameter distribution studied at various ambient pressure. The numerical study was conducted using a AVL-FIRE.
분위기 압력에 따른 커먼레일 시스템의 비증발 디젤 분무특성에 관한 실험적 연구
전충환(Chunghwan Jeon),정정훈(Jeonghoon Jeong),김현규(Hyunkyu Kim),송주헌(Juhun Song),장영준(Youngjune Jang),조승완(Seungwan Cho) 한국자동차공학회 2010 한국자동차공학회 부문종합 학술대회 Vol.2010 No.5
It is very important to understand the spray characteristics and fuel injection conditions in direct injection diesel engine because the emission gas compositions from diesel engines are related to spray formation processes. The objective of the papers is the characteristics of the macroscopic behaviour of diesel sprays. In this study, the characteristics of diesel spray has been studied using a shadowgraph and laser scattering. The spray characteristics such as spray tip penetration and spray cone angle studied at various injection pressure and ambient pressure.
정적연소실내 예연소실 설계인자 및 스월 강도에 따른 연소특성에 관한 실험적 연구
전충환(Chunghwan Jeon),양인규(Ingyu Yang),김현규(Hyunkyu Kim),송주헌(Juhun Song),장영준(Youngjune Chang),조승완(Seungwan Cho) 한국자동차공학회 2010 한국자동차공학회 부문종합 학술대회 Vol.2010 No.5
Natural gas is a promising alternative fuel to meet strict engine emission regulations in many countries. The development of natural gas engines requires low emissions along with the demand for better fuel consumption and increased power ratings. In this study, a cylindrical Constant Volume Combustion Chamber(CVCC) was used to investigate the combustion characteristics under different swirl intensity and equivalence ratio. The maximum combustion pressure and mass fraction of burned gas was evaluated in particular by the orifice diameter, volume ratio of pre-chamber, equivalence ratio and swirl intensity. This result could provide combustion characteristics with variation of swirl intensity.
군 운용 지역의 주행특성을 포장로 주행시험장에 적용한 주행모드 도출에 관한 연구
최낙원(Nakwon Choi),한동식,전충환(Chunghwan Jeon) 한국자동차공학회 2011 한국자동차공학회 지부 학술대회 논문집 Vol.2011 No.10-2
Most of a driving cycle is used to measure fuel consumption (FC) and emissions for a specified vehicle. A driving cycle was reflected geography and traffic characteristics for each country, also, driving characteristic is affected these parameters such as vehicle dynamics, FC and emissions. Therefore, this study is an attempt to develop a driving cycle for military operational area. The methodology is that the driving cycle is constructed considering important parameters to be affected FC. Therefore, this approach is expected to be a better representation of heterogeneous traffic behavior. The driving cycle is constructed using the proposed methodology for smallest RMSE and information value.