http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김봉석(B.S.Kim),방효선(H.S.Pang),이영재(Y.J.Lee) 한국자동차공학회 1997 한국자동차공학회 춘 추계 학술대회 논문집 Vol.1997 No.6_1
This study investigates the combustion characteristics of 6 types of natural gas as alternative fuel for automotive vehicles in a CVCC. Primary experimental factors of the combustion characteristics are the equivalence ratio and compositions of the gaseous fuel. The main results obtained from the study can be summarized as follows. In the case of Gas A and Φ= 1.1, maximum combustion pressure and heat release rate have peaks, and they increase as the heating value increase. The total burning time is also the shortest at the Gas A and Φ= 1.1, it shorten by increasing the burning velocity. The maximum flame temperature is shown at the Gas A and Φ = 1.0, and increasing the heating value, it increases. The concentration of NOx reveals the highest value at the Gas A and Φ= 0.9, and it increases by increasing Wobbe Index and burning velocity.<br/>
전부하시 희박영역에서의 천연가스엔진 성능향상에 관한 연구
김창업(C. U. Kim),김창기(C. G. Kim),김승수(S. S. Kim),방효선(H. S. Pang),한정옥(J. O. Han),조양수(Y. S. Cho) 한국자동차공학회 1996 한국 자동차공학회논문집 Vol.4 No.6
Many researches on natural gas engines, with lean mixtures are being conducted for the purpose of preservation of global environment. Lean combustion is one of the most promising method for increasing engine efficiency and reducing the emission from SI engines. Due to the possibility of partial burn and misfire, however, under lean burn operation, stable flame kernel formation and fast burn rate, by use of swirl or tumble flow, are needed to guarantee a successful subsequent combustion. Experimental data were obtained on a 4-stroke, natural gas fueled SI engine to inves tigate the effect of compression ratio, swirl and spark plug electrode rotation on efficiency and emission under lean burn condition. Experimental results have displayed that higher compression ratio, presence of swirl vane and favorable direction of electrode gap brought about the improvements in engine efficiency and its operational stability.<br/>