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이종화,김홍진,배효원,Lee C. H.,Kim H. J.,Bae H. W. 한국응용곤충학회 1978 한국식물보호학회지 Vol.17 No.3
가. 인삼의 모잘록병을 방제하기 위하여 10종의 약제를 공시하여 실내 및 포장시험을 실시하였다. 나. 공시약제의 효과를 조사하기 위하여 실내에서 토양관법으로 그리고 포장에서는 모잘록병균을 인위적으로 접종한 균포와 자연발병상태의 균포에서 종자소독, 토양소독, 토양관주법으로 처리하였던 바, 다. 모잘록병 방제를 위해 기대되는 약제로는 Homai, Captan, Validamycin, Tachigaren등이 있다. 1. The trials were planned to test ten different fungicides for the control of ginseng damping off Caused by Rhizoctonia solani in the laboratory and in the field. 2. Fungicidal activity was tested by soil drenching in test tube in the laboratory and with seedlings in t he seedbed naturally and artificially infested with damping-off organisms. 3. Promising chemicals to control damping-off of ginseng without marked phytotoxicity were Homai, Captan, Validamycin and Tachigaren.
[論文] 전기점화기관에서 연소의 사이클 변화 측정 및 해석
이종화(J.H.Lee),김응서(E.S.Kim) 한국자동차공학회 1992 오토저널 Vol.14 No.3
An experimental study was carried out to investigate the characteristics of cyclic variability of combustion in a single cylinder spark ignition engine. Cylinder pressure of 240 consecutive cycles were measured for various engine operating conditions. From these data, a thermodynamic analysis was performed for the typical cases in order to identify the cause and effect relation of the cyclic variation.<br/> In determining the number of cycles required for estimating the coefficient of variation of IMEP and so on, the oprating conditions must be cosidered to fit the objective of the analysis. It is thought that the variation in early flame stage is amplified through the flame propagation and results in the phase change between pressure and volume, which can be the major reason of cyclic variation of IMEP in case of lean operation.
조한승(H. S. Cho),송해박(H. B. Song),이종화(J. H. Lee),이귀영(K. Y. Lee) 한국자동차공학회 1998 한국 자동차공학회논문집 Vol.6 No.2
Unburned hydrocarbon is a key contributor to both the fuel economy and emissions of automotive engine. Cyclic variation of HC emission is of importance, especially during throttle transients. The real time measurement of hydrocarbon is particularly important to obtain a better understanding of the mechanisms for combustion and emissions, especially during cold start and throttle transient condition.<br/> This paper reports the cycle resolved measurement technique of unburned hydrocarbons to quantify rapid changes of in-cylinder concentration in the vicinity of spark plug by using the Fast Response Flame Ionization Detector(FRFID). While this instrument actually measures fuel concentration, its results can be indicative of the AFR behaviour. In order to understand the rapid change of hydrocarbons with cylinder pressure, it is necessary to study the response time delay of the system, including the time associated with gas transportation to FID. And signal from FRFID is correlated with cylinder pressure data to relate changes in mixture preparation to the classic analysis, such as indicated mean effective pressure(IMEP) and ignition delay, etc.<br/>
흡기관 분사 방식 수소 연료 기관의 성능 및 배출물에 관한 연구
이형승(H. S. Yi),이석재(S. J. Lee),이종화(J. H. Lee),유재석(J. S. Yoo),김응석(E. S. Kim) 한국자동차공학회 1993 한국 자동차공학회논문집 Vol.1 No.2
Using the solenoid driven gas injection valve. Hydrogen fuel supply system was made. It was attached to a single cylinder research engine and intake port injection type hydrogen fueled 5.1. engine was construc-ted. Engine performance, emission characteristics, and abnormal combustion were studied through the engine test performed with the variations of fuel-air equivalence ratio and spark timing.<br/> Compared with gasoline, hydrogen burns so fast that cylinder peak pressure and temperature are higher and NO is emitted more at full load condition. In the case of intake port injection type engine, COV_imep becomes lower due to the well-mixing of air and fuel, and engine output is lower owing to the low volumetric efficiency. As fuel-air equivalence ratio goes up, the combustion speed increases, and COV_imep decreases. NO emission peaks slightly lean of stoichiometric. As spark timing advances and fuel-air equivalence ratio goes up, the cylinder peak pressure and temperature become higher. so abnormal combustions take place easily.<br/>
스파크점화 기관에서 고속응답 FID를 이용한 실린더내 잔류가스량 측정에 관한 연구
송해박(H. B. Song),조한승(H. S. Cho),이종화(J. H. Lee),이귀영(K. Y. Lee) 한국자동차공학회 1998 한국 자동차공학회논문집 Vol.6 No.1
The residual gas in an spark-ignition engine is one of important factors on emissions and persuch as combustion stability. With high residual gas fractions, flame speed and maxicombustion temperature are decreased and these are deeply related with combustion stability especially at idle and NOx emission at relatively high engine load. Therefore, there is a need to characterize the residual gas fraction as a function of the engine operating parameters.<br/> In the present study, the quantitative measurement technique of residual gas fraction was studby using Fast Response Flame Ionization Detector(FRFID). The measuring technique and model for estimation of residual gas fraction were reported in this paper. By the assuming that the raw signal from FRFID saturates with the same slope for firing and misfiring cycle, in-cylinder hydrocarbon(HC) concentration can be estimated. Residual gas fraction can be obtained from the in-cylinder HC concentration measured at firing and motoring condition. The developed measureand calibration procedure were applied to the limited engine operating and design condition such as intake manifold pressure and valve overlap. The results show relevant trends by comparthose from previous studies.<br/>
조한승(H.S.Cho),송해박(H.B.Song),이종화(J.H.Lee),이귀영(K.Y.Lee) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.6_1
Unburned hydrocarbon is a key contributor to both the fuel economy and emissions of automotive engine. Cyclic variation of HC emission is of importance, especially during throttle transients. The real time measurement of hydrocarbon is particularly important to obtain a better understanding of the mechanisms for combustion and emissions, especially during cold start and throttle transient condition.<br/> This paper reports the cycle resolved measurement technique of unbumed hydrocarbons to quantify rapid changes of in-cylinder concentration in the vicinity of spark plug by using the Fast Response Falme Ionization Detector(FRFID). While this instrument actually measures fuel concentration, its results can be indicative of the AFR behaviour. In order to understand the rapid change of hydrocarbons with cylinder pressure, it is necessary to study the response time delay of the system, including the time associated with gas transportation to FID. And signal from FRFID is correlated with cylinder pressure data to relate changes in mixture preparation to the classic analysis, such as indicated mean effective pressure(IMEP) and ignition delay, etc.<br/>