http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
헬름홀츠 공진기에 의한 유사 흡기시스템의 비정상유동 특성
김경현(K. H. Kim),강희영(H. Y. Kang),강경은(K. Y. Kang),고대권(D. K. Koh),안수길(S. K. Ahn) 한국동력기계공학회 2007 한국동력기계공학회 학술대회 논문집 Vol.- No.-
Unsteady flows in a semi-induction system was investigated to verify their characteristics. Inside of the induction system in a diesel engine, wave is generated and it affects significantly to breathing performance. The system consists of rotary valve, intake pipe and resonator. To make a air pulsation, a rotary valve was contrived and employed in this system. And also, A side-branched Helmholtz resonator is mounted in the intake pipe to enhance a breathing capacity. The phase and amplitude of the pulsating flow in an unsteady flow system were found to be the strong factor that could be significantly affects to charging capacity. Some of the results given from experiment are described.
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/>