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레이저 회절법과 위상 도플러법에 의해 측정한 동일 분사조건의 분무의 평균 입경의 비교
김상진(S.J.KIM),나시다케이야(K.Nishida),히로야스히로유키(H.Hiroyasu) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.6_1
Among the optical sizing methods which have been developed for the measurement of the spray droplet size, the laser diffraction method and phase doppler method are using widely. For the comparision of the Sauter mean diameter of these two methods, Spray of twin fluid atomizer and humidifier at the same injection conditions was measured. Althougth the spray at the same injection condition was measured, the Sauter mean diameter measured by the laser diffraction method and the phase Doppler method was not shown the same value. The difference of Sauter mean diameter by two methods, was supposed to be due to a droplet size distribution of spray.<br/>
권순익(S.I.Kwon),김상진(S.J.Kim),히로야스 히로유키(H.Hiroyasu) 한국자동차공학회 1998 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1998 No.11_1
The behavior of the 2-stage spray was studied by using the schlieren method with the high pressure common-rail injection system. The spray injected 2 times with the interval of 0.3ms~ 1.5ms between the 1st and the 2nd spray in a modeled combustion chamber of constant volume bomb. In this case, the quantity of injected fuel of 1st and 2nd also changed. From the 2-stage injection on schlieren photograph, the 2nd spray goes further away than the 1st spray when the quantity of the 1st spray is less than that of 2nd spray. The dispersion of vapour to the combustion chamber is not affect in a 10% of 1st spray quantity. When the 1st spray quantity is more than the 2nd spray, the vapour scattering of spray is good.<br/>