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오영택(Youngtaig Oh),최승훈(Seunghun Choi),서정덕(Jungduck So),차성민(Sungmin Cha) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Our environment is faced with serious problems related to the air pollution from automobiles in these days. In particular, the exhaust emissions of diesel engine are recognized main cause which influenced environment strong. In this study, the potential possibility of biodiesel fuel was investigated as an alternative fuel for a naturally aspirated IDI diesel engine. The smoke emission of biodiesel fuel was reduced remarkably in comparison with diesel fuel, that is, it was reduced approximately 36% at 2000rpm, full load. But, power, torque and brake specific energy consumption didn't have no large differences. But, NOx emission of biodiesel fuel was increased compared with commercial diesel fuel. Also, the effects of exhaust gas recirculation(EGR) on the characteristics of NOx emission has been investigated. It was found that simultaneous reduction of smoke and NOx was achieved with biodiesel fuel(20vol-%) and cooled EGR method(10~15%).
오영택(Youngtaig Oh),최승훈(Seunghun Choi),김현철(Hyunchel Kim),김건회(Gunhoi Kim),차성민(Sungmin Cha) 한국자동차공학회 2008 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
In this study, a filter of impregnation paper made that combining the base paper with the resin. The performance and the stability was studied by it. An impregnation paper consists of HPZ, Mulberry pulp and Laub holze bleached kraft pulp(below LBKP). We would like to acquire a sort of resins through basis weight, thickness, air permeability, maximum pore size, mean pore size, tensile strength and stiffness of impregnation paper. It suited for an impregnation paper mixed with mulberry pulp. Used resins in this study was Phenol, Acryl, PVAc. And as every resins, sample was divided into existence and nothing of embossing.