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[디젤엔진부문] 이종연료 층상분사를 이용한 디젤엔진의 NOx와 soot 동시 저감에 관한 연구
강병무(B.M. Kang),김종률(J.Y. Kim),이태원(T.W. Lee),정성식(S.S Chung),하종률(J.Y. Ha) 한국자동차공학회 2000 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
<br/> ~~.A\-%7}t'--c:j-~ 2000\15:. ~;>jI~t:1J~<br/> 2000-03-2041<br/> 01<br/> 3S. 91 ~ ~A~~<br/> A<br/> L.s:.<br/> OI<br/> Ho~<br/> c:"~.n. C::>C>c r2. C:::>L ;<br/> C/~2!!~~ NOx$ soot ~AI AI~OU ~~ eF?<br/> 7J'!!-';'-, 7,J'6-it(%ottJI-o:}jj! tJI~~), 01I11~(~~ ~~tJI-O:}), '\J'\J-6j, "6J-'6-iH%ottJI-o:}jj!)<br/> A Study on the Simultaneous Reduction of :>iOx and Soot<br/> with Dual Fuel Stratified Injection System in a Diesel Engine<br/> B. 1\1. Kang, ]. Y. Kim(Graduated School of Dong- A L'niv'>, T. W. Lee(Changwon CQUage), S. S. Chung, ]. Y. Ha(Dong-A Univ,)<br/> ABSTRACT<br/> To investigate the method of the simultaneous reduction of Soot and NOx, we developed a new conception for dual fuel stratified injection system in a Diesel Engine.<br/> Some parts of the injection system, ie. nozzle holder, delivery vale. were remodeled to inject diesel and methanol in order from one injector. The Quantity of diesel and methanol was controled precisely by micrometers that were mounted at control lack of injection pump.<br/> The real injection Quantity ratio of dual fuel was certificated by volumetric ratio at injection Quantity experiment. We could confirm the capability that soot and NOx simultaneously were reduced by diesel-methanol stratified injection from the results of combustion and exhaust characteristic.<br/>
윤수한(S.H.Yoon),이중순(J.S.Lee),전대수(D.S.Jun),정성식(S.S.Chung),하종률(J.Y.Ha) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.6_1
In this research, we use IDI type constant volume combustion chamber which is made possible to stratified combustion to construct the design back data of lean-burn engine. Some experiments are conducted by the passagehole angle in the adapter of main and sub-chamber. The effects on the comustion according to the discharge characteristics are investigated. The used fuel is methanol prospective as an alternative fuel. Flame propagation process in the main and sub-chamber are analyzed by pictures. As the results experiments, combustion characteristics reveals that ignition timing, passagehole angle.and discharge method greatly effects on.<br/>
박종상(C.S.Park),이명준(M.J.Lee),이태원(T.W.Lee),하종률(J.Y.Ha),정성식(S.S.Chung) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.11_2
The process of moisture evaporation, ignition delay, and volatile combustion of single CWM droplet was observed with the variation of initial droplet diameter at the surrounding temperatures of 1173K and 1373K.<br/> Results for the variation of the mass, the mass fraction burned, and the density of droplet are the followings<br/> The process of the moisture evaporation and the volatile combustion is largely effected by the surrounding temperature and the initial droplet diameter, also 60of initial mass is reduced during this reaction period.<br/> The effect of the surrounding temperature upon the density variation of droplet is little, on the other hand the decrease of droplet diameter accompanies with about 10reduction of density.
이종숭(J.S.Lee),이중순(J.S.Lee),정성식(S.S.Chung),하종률(J.Y.Ha) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.6_1
For a digital engine control system, control timings such as ignition and injection are based on the crank shaft angle. Therefor, it is very important that the angle of the crank shaft have to be detected with accuracy for the fuel injection and ignition timing, the sequential multi-point injection(MPI) system that has a independent injector in each cylinder, is used to inject the fuel of the accurate quantity, and to cope with varying of the engine status. The distributorless ignition(DLI) System that is the direct ignition method, is used for the accurate ignition and the flexible ignition timing. We install a sensor that occurs a number of events for the accurate detecting of the angle of the crank shaft.<br/> This study aims to make a event detecting algorithm, a method to detect the crank shaft angle by a event, and a software witch output a control signal at the given angle values.<br/>
이종숭(J.S.Lee),김진영(J.Y.Kim),이상무(S.M.Lee),이중순(J.S.Lee),정성식(S.S.Chung),하종률(J.Y.Ha) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.11_1
It is a necessary condition to control the precise air-fuel ratio with real time for the stability of lean burn including transient operating condition as well as other factors as flow of mixture and ignition energy in SI engine.<br/> This study aims to development of software and hardware such as the engine control system and interface. Real time control system is introduced and its characteristics are tested in SI engine. The real time control system was applied to SI engine and the results are shown.<br/>