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Suk-heon An,Osami Nishida,Hirotusgu Fujita,Wataru Harano,Masao Hiroi,Masaaki Sato,Masanori Tashiro,Hyung-soo Kim 한국자동차공학회 2001 한국자동차공학회 Symposium Vol.- No.-
This research makes a new attempt to use the activated seawater by electrolysis in the wet serubber for the large diesel engine as a sort of post, exhaust gas treatment. By means of eletrolysis using the seawater, the activated alkaline water made by a negative pole is used to neutralize sulfuric oxide (SOx). carbon dioxide (CO₂) and carbon monoxide (CO) ete., but on the other hand the activated acidic water made by a positive pole oxidizes nitrie monoxides (HO) of exhaust gas to nitrie dioxides (NO₂), thus the NO₂ become dissolved into the seawater. Moreover, the particulate matter of exhaust emissions is forced into direct, contact with seawater. The results found that the high alkaline water of pH 10 was effective in reduction of SOx. CO₂ and above all else, the acidic water of pH 3 converted NO into NO₂ when compared with the other pH. Besides, it was also adequate to reduce the, particulate matter. This experiment believes that the way to reduce emissions from the marine diesel engines is to make it. attractive from an operating perspective, as well as an environmental perspective.<br/> <br/>
Formation Characteristics of PM and SOF by Spray Combustion of Marine Heavy Fuel Oil
Kim, Houng-Soo,Murakami, T.,Nishida, Osami,Fujita, H.,Harano, W. The Korean Society of Marine Engineering 2004 한국마린엔지니어링학회지 Vol.28 No.2
This study is intended to check a temperature of the flame to raise by burning A heavy oil in a boiler. to measure the concentration of DS and SOF after collecting the PM(Particulate Matters). and to analyze the components ingredients of SOF by G.C Mass for presupposing the generation of particulate matters(soot). It is thought that the methyl(CH3) of the cyclic compound is changed to the materials of 2 cycles and 3 cycles after becoming CH by dehydrogenation and also mixing with the CH of a chain compound. form H-$\cdot$C=C$\cdot$-H that is mentioned before. in order to become Polycyclic Aromatic Hydrocarbon.
Miharat Yoshinori,Maruyama Yasuo,Okada Yutaka,Kido Hachiro,Nishida Osami,Fujita Hirotsugu,Ito Masakazu The Korean Society of Marine Engineering 2005 한국마린엔지니어링학회지 Vol.29 No.7
A marine diesel engine should realize optimal operation efficiency while reducing NOx, PM (Particulate Matters) and other emissions. Fuel injection systems that use electronic control can become an effective means of achieving that objective. However. it still needs some accurate and instant information in order to bring its ability into full potential while sailing on the sea. The important information of them are a shaft torque and continuous combustion pressures of all cylinders. The shaft torque and the propeller thrust described in this paper are measured at an intermediate shaft by using a unique principle that one of two electromagnet coils oscillates a vibrating strip which the length changes with force and the other coil picks up the change of the frequency of the vibrating strip. For further reference, the shaft power meter multiplied the torque by the shaft revolution has already had about 750 sets of sales performance. The research presented in this paper started about ten years ago and is concerned with the development of a combustion pressure sensor that uses the same principle. Recently, the pressure sensor which bears continuous operation has been developed after a hard struggle, that is, the system that consists of a shaft horsepower meter, a propeller thrust meter and a combustion pressure sensor has been completed and has been shown to be reliable. This paper describes the configuration of this system, the material of the combustion pressure sensor, the principle of that, and the improving point of the sensor, and, we finally consider the use of this system.