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김정일(Jungill Kim),임태균(Taegyun Lim),조장형(Janghyung Cho) 한국자동차공학회 2010 한국자동차공학회 학술대회 및 전시회 Vol.2010 No.11
This paper deals with engine room and underbody layout of fuel cell electric vehicle(FCEV), which has been proposed as a potential alternative to fossil fuel depletion. Investing the great R&D efforts, the global vehicle manufactures, especially Honda motor corporate in Japan, has shown not prototype but commercial vehicle using fuel cell in U.S and Japan market recently. In this paper, we analyze cooling and aerodynamic performance with engine room and underbody layout in newly FCEV. The two radiators for fuel cell and electric compartment parts cooling in FCEV has been analyzed, their performance are obtained in terms of cooling performance ratio(CPR). The aerodynamic performance is closely related to fuel consumption, and stack load condition is changed with aerodynamic performance in FCEV, therefore it is very important parameter for FCEV design. But, Aerodynamic performance for FCEV is not progress yet. Engine room layout is not effected cooling performance, which is the cooling module already is operated maximum power, but aerodynamic performance is higher than internal combustion engine vehicle about 10%. Improvement of aerodynamic performance increased efficiency and reduced heat rejection in fuel cell stack, vehicle performance is increased dramatically. Aerodynamic performance is evaluated in terms of drag coefficient, improved through underbody modification using air devices.