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김응서(Eungseo Kim),이승희(Seunghee Lee),박종현(Jonghyeon Park) 대한기계학회 2005 대한기계학회 춘추학술대회 Vol.2005 No.11
Suction system plays a main role in transferring products or parts when manufacturing with its simple and stable grabbing properties. In order to maintain taking objects, the system should generate sucking force continuously, but usual suction mechanism is composed of multi-suction cup with one air compressor. Consequently, only a malfunction of suction cup can cause the damage to products. To prevent this, new suction mechanism was proposed using permanent magnet last year. The proposed mechanism activates each suction cup separately, therefore the grabbing stability was enhanced. But that also had demerits, namely, high load to actuator, bad influences to products caused by magnet, and low efficiency due to the sucking speed. So we propose more simple, stable and efficient method to give actuation to each cup using step motor not with magnets. With experiments, the development of lifting ability and stable suction performance are shown.
Lean Burn System 에 의한 Emission Control 및 연료경제
김응서(Eung Seo Kim),김세웅(Se Ung Kim) 대한공업교육학회 1978 대한공업교육학회지 Vol.3 No.1
In this paper, effects of emission control and fuel economy were studied as lean mixture was supplied by heating media and mixing tube. The device was installed between carbureter and intake manifold and was heated by coolant water. The heating media and mixing tube was shown to be effective device for reducing emission and fuel consumption.
[論文] 메탄올-물 混合燃料機關에 關한 硏究(사이클 시뮬레이션에 의한 예측)
김응서(E.S.Kims),정진은(J.E.Chung) 한국자동차공학회 1981 오토저널 Vol.3 No.3
A cycle simulation of 4 cycle spark ignition engine using methanol-water blend as a fuel has been developed for study of prediction of power, specific fuel consumption, mean effective pre- ssure and thermal efficiency. One-dimensional flow model for intake process and thermodynamic model for combustion process were selected.<br/> After, performance test was made with conventional engine which was modified in considera tion of fuel properties. And computational results by simulation have been compared with experi mental results.<br/> As the agreement between computational and experimental results was good, prediction of engine performance by model was possible.