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천연가스가 예혼합된 정적연소실에 파일럿오일을 분사한 복합연소현상
최인수(I. S. Choi) 한국자동차공학회 1995 한국 자동차공학회논문집 Vol.3 No.6
As an alternative fuel producing less exhaust emissions, natural gas is of interest for use both in 81 and CI engines. The potential of natural gas fuelled dual-fuel engine is considered high enough. However, much effort has to be made so that gaseous fuel is used efficiently with simultaneous minimum use of pilot oil Hence, a simplified three-dimensional model, using a finite volume method in cylindrical coordinates, has been developed to facilitate an understanding of the dual-fuel combustion phenomena and to predict the complex interactions between the pilot distillate and natural gas. The computer model was calibrated by comparing it with the experimental results obtained from diesel engine like combustion bomb tests.<br/> In the pre-mixed natural gas combustion, the fuel burning was highly reliant on the injection condition and subsequent burning nature of the pilot distillate.
최인수(Choi I. S),전병윤(Jun B. Y),전만수(Joun M. S),허민호(Huh M. H),성재용(Seong J. Y) 대한기계학회 2006 대한기계학회 춘추학술대회 Vol.2006 No.11
In this research, a new differential gear assembly of an agricultural vehicle is developed by considering the manufacturing cost. A new design of the assembly together with its associated manufacturing process is proposed to minimize the machining cost and the material cost. The new design is characterized by both the pinion bevel gear having a fiat back face and the assembly case having a slot for the pinion bevel gear and a sprocket for power transmission. The preform of the assembly case is hot forged to save material loss and finally cold sized after machining. The new assembly is made and its function is verified to satisfy the basic requirement.