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Brake-by-Wire 시스템용 전자 브레이크 모터 개발
방기창(Kichang Bang),김경원(Kyungwon Kim),김태헌(Teahun Kim),이석원(Sukwon Lee),권순효(Soonhyo Kwon) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
The vehicle industry has been developing day by day. Demand for the development of intelligent vehicle that will satisfy both technology and economy has been increased. As a result, the vehicle control system has been changed from a mechanical control method to a electrical control method. In case of brake system, the direct control method that can directly brake a vehicle using a electric wires are under study to replace oil pressure system. This paper deals with a electric mechanical brake motor that is one of the core automotive part contributing greatly to the development of automotive industry.
레미콘 플랜트의 현황 및 관리 - 원재료 수입, 저장 및 계량설비
김상용,최재진,방기창 한국콘크리트학회 2002 콘크리트학회지 Vol.14 No.4
독일의 건설업자였던 마겐스(J. H. Margens)가 1903년 스타른베르그(Starnberg)에 레미콘 플랜트를 건설하고 레미콘의 제조 특허를 받은 것을 레미콘 산업의 시작으로 본다. 미국에서는 독일보다 10년 늦은 1913년 메릴랜드(Mary-land)주의 볼티모어(Baltimore)시에 플랜트의 고정 믹서로 혼합한 다음 운반하는 중앙혼합방식(central mixing system)의 레미콘 플랜트가 건설되었다. 그러나 이때는 플랜트에서 혼합하여 덤프트럭으로 운반하는 방식이었기 때문에 품질문제가 발생할 수 있어 크게 환영을 받지 못하다가 1926년에 이르러 트럭믹서의 발명으로 레미콘 산업발전의 큰 계기를 마련하였다. 초기부터 미국의 경우는 공급지역이 넓은 특징이 있어 플랜트에서 재료만 계량하여 트럭믹서에 적재하여 운반 중에 혼합하는 트랜싯 믹싱방식(transit mixing system)이 성행해 왔다.(중략)
연료전지자동차의 연비향상을 위한 수소재순환블로어 모터 개발
권순효(Soonhyo Kwon),김태헌(Teahun Kim),방기창(Kichang Bang),김경원(Kyungwon Kim),이석원(Sukwon Lee) 한국자동차공학회 2012 한국자동차공학회 부문종합 학술대회 Vol.2012 No.5
When hydrogen and air is supplied to generate electricity in fuel cell stack, however suitable amount is supplied, all the hydrogen not form water. There is supplied hydrogen which did not reacted perfectly and mixed in exhaust fumes ,It can be caused danger of exploding and ineffective hydrogen application.Therefore, recycle of hydrogen is needed for aspect of effective hydrogen. This hydrogen recirculation system makes reacted hydrogen recycled and rate of hydrogen increased through stack. As a result, it is the purpose that induces mileage of car. For this, ejector or hydrogen recirculation blower has been studied as main method.
희토류 자석 저감을 위한 영구자석 동기전동기 구조에 관한 연구
최윤철(Yunchul Choi),김태헌(Taehun Kim),방기창(Kichang Bang),김경원(Kyungwon Kim) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
This paper deals with the structure of permanent Magnet Synchronous Motor to reduce rare earth magnet. SPM, IPM and PMASynRM are compared and analyzed to propose the optimal performance structure by reducing the use of rare earth magnet. Each motor is designed by 2D finite element analysis. Based on this structure, it can be applied in various automotive motor.
김경원(Kyungwon Kim),김태헌(Taehun Kim),권순효(Sunhyo Kwon),방기창,최윤철(Yunchul Choi) 한국자동차공학회 2013 한국자동차공학회 부문종합 학술대회 Vol.2013 No.5
Fuel cell electric vehicles are developed by a lot of automobile companies for reducing carbon dioxide that is main reason of global warming. In particular, the FCEV is a pollution-free car that does not emit exhaust gas by using hydrogen fuel and can largely alleviate problem of energy resource depletion and environmental pollution problems. Remaining hydrogen after burning reaction in the stack is recirculated to the entrance of the stack to prevent the waste of fuel and improve the efficiency of the system. In this system, a product recirculating hydrogen is the Hydrogen Recirculation Blower(HRB) motor. The vibration in HRB motor has a great effect on NVH performance of the FCEV because the motor is operated at high speed. The focus of this paper is to analyze dynamic characteristics through the vibration and frequency response analysis using MSC Nastran program. Also, real test is performed to verify simulation data.
영구자석 Stopper를 이용한 엑츄에이터 구조 개발에 관한 연구
김경원(Kyungwon Kim),최윤철(Yunchul Choi),손병욱(Byoungook Son),김호성(Hosung Kim),방기창(Kichang Bang) 한국자동차공학회 2011 한국자동차공학회 부문종합 학술대회 Vol.2011 No.5
This paper deals with the structure using magnet stopper of actuator valve which is applied BLDC motor to improve the power and effectiveness of vehicle engine. It’s not reqiured to flow the current when the valve stops. And also it has adventage to solve the problem of noise by using detent toque of magnet stopper. Based on this structure, it is designed to figure out the character of the actuator through 3D finite element analysis and to build the possibility of applying of the actuator applied permanent magnet stopper designed practical research process.