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[차량운동성능부문] 엔진 토크의 실시간 측정에 관한 연구
유도정(D. J. Ryu),정해일(H. I. Jung),정경석(K. S. Jung),장건호(G. H. Jang),정종대(J. D. Jung),이화순(H. S. Lee) 한국자동차공학회 2000 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The output torque of an automobile engine has been measured currently by connecting the engine to an engine dynamometer. But, there is a little interference to measure the output torque while a vehicle is driven due to some restraints.<br/> This paper deals with real time measurement of output torque of a vehicle with manual transmission by developing a sensor which can estimate the output torque during driving.<br/> The output torque changes according to the road condition and the engine load as driver's desires change. In this process, the fluctuation of the output torque changes the compression force of the damping spring of the clutch, conclusively, the phase angle is generated between the input part and the output part of the clutch according to the fluctuation of the engine load, when the power is transferred from the engine to the transmission. By measuring this phase angle, the real time output torque of the automobile engine can be measured.
이건호(K.H.LEE),정종대(J.D.JUNG) 한국자동차공학회 1995 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1995 No.11_2
The characteristics of the heat transfer performance and pressure drop in 1 tank laminated evaporator which is an essential element of automobile air conditioner have been investigated experimentally. Five kinds of parameters which is affected by both sides of air and refrigerant are air mass flow rates, air temperature and humidity just in front of the evaporator, super heated temperature and evaporating pressure. It is confirmed that the heat transfer performance is governed by the key parameters of air mass flow rates, air temperature and humidity, but on the other pressure drop plays a decisive role about the function of gaseous Reynolds number in refrigerant. Furthermore, the characteristics curves of heat transfer, latent heat and pressure drop have been obtained.<br/>
냉매충전량 변화에 따른 자동차에어컨 성능의 실험적 고찰
이건호(G.H.LEE),정종대(J.D.JUNG),최규환(K.H.CHOI),유정열(J.Y.YOO) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.6_1
The system performance of an automotive air conditioner with variations of charging conditions lias been investigated through the experiment. The air conditioning system which are composed of evaporator, condenser, compressor, expansion valve and receiver drier requires a proper refrigerant charge in operating conditions<br/>