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오재건(Jae-Geon Oh),박기호(Ki-Ho Park),박준택(Jun-Taek Park),임상근(Sang-Gun Lim) 한국산업융합학회 2000 한국산업융합학회 논문집 Vol.3 No.4
The purpose of this research is to find the fundamental data for the design and optimum operation condition for the disk atomization comparing the atomization characteristics of the modified straight vane type disk atomizer and the cup type atomizer widely used in the field of spray dry. First, the experimental comparison of the characteristics of Na₂SO₄ atomization has been carried out using the cup type disk atomizer and the three kinds of vane type atomization designed specially for the experiment. After the comparison of the experimental data of the Na₂SO₄ and raw milk have been conducted using vane type atomizer.<br/>
박용국,오재건,이충원,Part, Young-Kug,Oh, Jae-Geon,Lee, Choong-Won 한국액체미립화학회 2001 한국액체미립화학회지 Vol.6 No.4
The Gasoline Direct Injection(GDI) system has been highlighted due to the improvement of fuel consumption and the control of exhaust emission from gasoline engines. Main purpose of the present study is to measure spray characteristics of GDSI for real engine application. We have investigated experimentally spray tip penetration, spray angle, tip velocity and spatial spray distribution. Counter-rotating vortex grown on the spray surface plays an important role in the spray characteristics. Accordingly the spray tip penetration and tip velocity do not excess 50mm, 20m/s respectively, under 0.6MPa ambient pressure. the spray cone angle of GDSI have a same tendency to a simplex swirl atomizer.
신현승(Hyeoun Seung Shin),오재건(Jae Geon Oh) 한국자동차공학회 2005 한국자동차공학회 춘 추계 학술대회 논문집 Vol.2005 No.5_2
Through an investigation about a certificate of qualification system about the car of the domestic and abroad, we found the problem about a car certificate of qualification in our country out and suggested new alternative. The feature of Japan of a qualification system does not have the practical training examination, but there is a taking note examination. If over a regulation hour completes the practical training education in a car repair educational institution to be recognized officially, the practical training ability is recognized in Japan. Various private certificate of qualification is activated case of America. They are quoted according to strict criteria, so power of influence is big and the confidence very high. The certificate of qualification about the maintenance of the car is inclusive in our country. To order this field more for the activation, we classify the certificate of qualification minutely and need to order the specialization. So that we need the new certificate of qualification about the establishment of the metal plate and painting of a car body.
민병도(Byeong Do Min),이강원(Gang Won Lee),유승동(Seung Dong Yu),한대희(Dae Hee Han),오재건(Jae Geon Oh),이성만(Sung Man Lee),나완용(Wan Yong Na) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The standard time(ST) is very important part of management efficiency and cost in automobile repair industry. There are many methods of work measurement of automobile repair time in korea. So we have studied differences of work measurements. The main goal of this study is to make people in automobile repair industry understand work measurement.