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전자유압식 분사계에 의한 초고압 디젤분무의 거동에 관한 연구(Ⅱ)
장세호(S.H.Jang),안수길(S.K.Ahn) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.11_1
Behaviour of ultra-high pressure diesel spray in a constant-volume pressure chamber was studied with injection pressure ranging from 20 to 160MPa. Sprays were observed by the right angle scattering method. As a result, the spray tip penetration is first proportional to a time, and after that, it is proportional to 0.52 of the time during at the time of injection. The spray angle, jet angle of spray and spray max. width were larger as injection pressure and back pressure increase. An empirical correlation was made for the parameters of injection pressure, air-fuel density ratio, spray tip distance, spray angle, jet angle of spray and max. spray width.<br/>
장세호(S.H.Jang),안수길(S.K.Ahn) 한국자동차공학회 1995 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1995 No.11_2
A computer model with the capability to closely predict fuel injection rates and thus engine combustion conditions would be very useful in designing or improving fuel injection system. The paper deals with hydraulic phenomena and dynamics of individual components of the Electronic Hydraulic Fuel Injection System. The mathematical model featuring all these phenomena was simulated on the computer. The injection pressure and the injection rate have been investigated by changing the injection parameters. also, The simulation results are compared with the results of measurments.<br/>
장세호(S. H. Jang),안수길(S. K. Ahn) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.6_2
A computer model wi th the capability to closely predict fuel injection rates and thus engine combustion conditions would be very useful in designing or improving fuel injection system. The paper deals with hydraulic phenomena and dynamics of individual components of the Electronic Hydraulic. Fuel Injection System. The mathematical model featuring all. these phenomena was simulated on the computer. The injection pressure and the injection rate have been investigated by changing the injection parameters. also, The simulation results are compared with the results of rneasurments.<br/> <br/>
장세호(S.H.Jang),안수길(S.K.Ahn) 한국자동차공학회 1994 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1994 No.11_1
Behaviour of ultra-high pressure disel spray and its structure in a constant-volume pressure chamber were studied with injection pressure ranging from 20 to 110MPa. Sprays were photographed with back illumination scattering method and right angle scattering method. The jet spray angle measured by right angle scattering photo graph and the spray structure were investgated with both photographs. As a result, the jet and spray angle was larger as injection pressure increases and the branches in spray get shorter with the increase of injection pressure.