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김종우(J. W. Kim),김현규(H. k. kim),박호준(H. J. Park),전충환(C. H. Joen),장영준(Y. J. Chang) 한국자동차공학회 1996 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1996 No.11_2
To diagnosis the complexible diesel fuel combustion processes and spray characteristics, many simplified injection systems are developed and used. Especially it is very popular that the solenoid servo valve use to control the fuel providing from injection pump to injector, but this system cause some problems, one of them is that makes a unsteady motion of needle when operating time is not enough. In this study, to clarify the effect of this unsteady motion of needle was measured by the injection rate and spray characteristics with using needle lift sensor.<br/>
김남해(N.H Kim),백병산(B.S Baek),전용주(Y.J Jeon),김지홍(J.H Kim),이병송(B.S Lee),김종우(J.W Kim) 한국철도학회 2002 한국철도학회 학술발표대회논문집 Vol.- No.-
This paper presents general concept of DC switch gear(DCSWGR). Normally, DCSWGR consist of Digital protection unit(DPU), High Speed Circuit Breaker(HSCB), Disconnect Switch(DS), Programmable Logic Control(PLC), Auxiliary Relays and etc. Most of the components has its special characteristics and their interface between each others are various and complex. In this paper every constituent general design are preceded and interface between each component are examined. And also DCSWGR operation logic with logical diagram including interlock signal are introduced.