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慶在浩 弘益大學校 1977 弘大論叢 Vol.9 No.-
In this paper, studies on the reduction in nitrogen oxide emission is made by analysis with exhaust gas. In combining with oxigen in air, nitrogen oxide generated under the conditions of high temperature and pressure when combustion is conducted in combustion chamber. In order to reduce the quantity of this undesirable emissions, the following method is taken. ① It is necessary for combustion temperature and pressure to decrease and time of reaction to shorten. ② We have two stage combustion process:combustion in lower concentration of oxigen and in low temperature ③ lower NO₂ emission burner.
慶在浩 弘益大學校 1976 弘大論叢 Vol.8 No.-
In this paper, studies on the reduction in nitrogen oxide emmission is made by analysis with exhaust gas in automobiles. In combining with oxygen in air, nitrogen oxide generated under the conditions of high temperature and pressure when combustion is conducted in cylinder. In order to reduce the quantity of this undesirable emissions, the following method is taken. ① It is neccessary for intake vaccuum pressure to increase and temperature of gas mixture to decrease. ② a study on reduction of NOχ by water injection in cylinder ③ EGR control system.
曺東震,韓俊澤,劉憲一,朴龍鎭,金錫胤,慶在浩 弘益大學校 1974 弘大論叢 Vol.6 No.-
The matrix of ductile cast iron are welded by pre-heating it at 300℃ in the room temperature. Through the mechanical, non-desbructive testing and analysis of the composition. the possibility if arc welding of ductile cast iron are studied as follows; 1. L electrode is the best among them in weldability, impact value and machinability. The next is LB electrode followed by S electrode. C electrode is last. However, the tensile strength showed in the following order: LB, S, L, C. 2. LB, S, L, C, all are available for the welding of cast iron. 3. The above experiment showed that L and LB are good in general. In addition LB is low in price, we therefore prospect that it will be widely used as the electrode for cast iron.
李龍鎬,孫秉淸,慶在浩 弘益大學校 1976 弘大論叢 Vol.8 No.-
Fine particles of Ag were prepared by means of evaporation in Nitrogen gas at low pressures. Smoke particles collected at different parts were studied through electron microscopy. The particle size varied with the position of collecting particles. They were small and uniform between the evaporating point and the short distance, while they were large and multiform at the far longer distance.
內燃機關의 燃燒에 관한 硏究 : About the effect of post-combustion 2次燃燒의 效果에 對하여
慶在浩,金庸燮 弘益大學校 1979 弘大論叢 Vol.11 No.-
As one of countermeasures for preventing automotive air pollution, there is a system which is called post-combustion. It is the method that burns the incomplete combustive composition by the secondary air and the heat of exhaust gas. In this system, it is necessary to evaluate the effect of post-combustion, for post-combustion is done not always. Sometimes, only dilution or extinguishment is done by the low temperature of secondary air. It set up the equation of dilution combustion to research the effect of post-combusion by Secondary air, and calculated the composition of diluted exhaust gas by computer. Then the results of calculation and experiment are compared and didcussed about to the change of quantity of CO and NO??. The experiment was done by using the 4-cycle gasoline engine of which exhaust manifole was feeding secondary air from compressor.