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디젤기관의 연소실 형상 및 연료 성상 변화에 의한 기관성능 및 배기배출물 배출 특성
김창영(Changyoung Kim),최승훈(Seunghun Choi),오영택(Youngtaig Oh) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
Ethylene glycol mono-normal butyl ether(CH₃(CH₂)₃O(CH₂)₂OH), also known as EGBE, is an oxygenated additive that contains 27.1% oxygen by weight and is well soluble in diesel fuel. It is a colorless liquid chemical that has been evaluated for use as a diesel fuel component. Experiments were conducted by using the four blends with different volumetric percentage of EGBE(5, 10, 15 and 20%) in baseline diesel fuel. The test engines were single and four cylinders, four stroke, DI and IDI diesel engine performanced. Also, data was collected for steady state operation at engine speed-load conditions. The focus of this study was to investigate the effects of the addition of oxygenated fuel to on the engine-out emissions and the performance on smoke emission of all EGBE blends were reduces substantially in comparison with conventional diesel fuel on each engine.<br/> Theses results indicate that EGBE blended fuels may be an effective blendstock for diesel fuel as an environment-friendly alternative fuel.
김창영 ( Changyoung Kim ),김명규 ( Myungkyu Kim ) 한국손해사정학회 2018 손해사정연구 Vol.17 No.-
손해사정사 제도는 보험사고로 인한 손해액 및 보험금을 신속하고 공정하게 조사하여 결정하는 전문인 제도로 금융감독원이 시행하는 시험을 합격하고, 6개월의 실무수습 후 자격을 등록하게 된다. 이 연구에서는 현행 손해사정사 시험제도의 문제점을 살펴보고, 시험제도를 통합 손해사정사로 개선방안을 제시하고, 합격자의 결정방법, 시험과목의 변경과 추가, 선발기준 등도 제안하고자 한다. The claim-adjuster system is a specialist system that promptly and fairly the amount of damages and insurance from insurance accidents. The claim-adjuster will pass the exam conducted by the Financial Supervisory Service and register the qualification after 6 months of practical training. This study examines the problems of the current Claim-adjuster examination system. And suggests ways to improve the examination system as an unified claim-adjuster. I would like to propose changes and additions of examination subjects, decision method for successful applicants, and selection criteria.
장인기,김창영,Chang, Inki,Kim, Changyoung 항공우주시스템공학회 2007 항공우주시스템공학회지 Vol.1 No.4
The 150 gal Ion EFT(External Fuel Tank) used to enlarge the aircraft operation range was adopted an import equipment in T-50 FSD phase. But in Production phase the EFT was planed to develop for the stable ILS(Integrated Logistics Support) and technical ability improvement by using the composite materials. The design for configuration and fuel system is intended to maintain compatibility with aircraft systems and the development test is performed on component, assembly and aircraft. This study is conducted to provide the technology of design and test for the 150 gallon composite EFT in LRU level. The test results show that the composite EFT is satisfied with structural, functional and environment requirements which are described in specification.