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박재범(J.B.Park),이창욱(C.W.Lee),이종태(J.T.Lee) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.11_2
Hydrogen fueled engine with external mixture has higher thel1Tlal efficiency, but has lower power output than that of hydrogen engine with internal mixture. So, it is impossible to achieve high performance and efficiency simultaneously. In this study, dual injection hydrogen fueled engine which enables to obtain high performance and efficiency over all operating range is introduced. And, cycle and characteristics of this hydrogen engine were analysed in order to estimate the proposed hydrogen engine.<br/>
김동수(D. S. Kim),박재범(J. B. Park),이원희(W. H. Lee) 대한기계학회 2002 대한기계학회 춘추학술대회 Vol.2002 No.5
In the pneumatic system, pneumatic cylinder is wildly used to reciprocation and rotating movement. The uneasiness element of system is collision of piston, end-cap, head cap and tube when piston is<br/> loading. This has a short life of cylinder and is due to system destruction. We are applied to adhering with the cushion sleeve at the piston.<br/> At this pneumatic cushion cylinder, it is important to researching for cushion chamber characteristics of cushioning pressure and force. This study examines the dynamic characteristics of pneumatic cushioning cylinder and cushion sleeve desi후. At head part cushion chamber for the vertical experimental, The decisions of cushioning effect and the results of the experimental research are obtained to the followings:<br/> i ) The cushioning effects could acquire to the research, if the compressible energy is more than kinetic ones.<br/> ii) The collision of piston and head cover could acquire to the research, if the kinetic energy is more than compressible ones.<br/> iii) If the load increase to the rolling car, the cushion region pressures would increase and the dynamic force.
이중분사식 수소기관의 개발에 관한 기초연구 (흡기관분사기관의 역화한계 다량비 및 확장)
백성호(S.H.Paik),박재범(J.B.Park),최경호(K.H.Choi),김지문(J.M.Kim),이종태(J.T.Lee) 한국자동차공학회 1994 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1994 No.11_1
Hydrogen fueled engine with external mixture is more efficient, and hydrogen fueled engine with internal mixture is more poweful. So, to make a hydrogen fueled engine with high efficiency and power, It is required that engine is drived by external mixture formation under low load, and by direct injection into cylinder under high load. To realize the duel injection hydrogen fueled engine, back fire limit equivalence ratio and possibility of expansion of that are examined and analyzed.<br/>