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박정희(Jeonghee Park),이창하(Changha Lee),권혁률(Hyuckryul Kwon),김치명(Chimyung Kim),박용선(Yongsun Park) 한국자동차공학회 2014 한국자동차공학회 부문종합 학술대회 Vol.2014 No.5
In the fuel cell vehicles, there is usually a falling-off in durability caused by the inflow of air into a cathode area when the stack is down. In this study, the air cutoff valve was developed which could block the air passage to ensure the durability of the stack. Unlike a typical valve, it is important to secure the stability for preventing malfunction in the operation. And it must operate normally when the exhaust gas containing much moisture is frozen around the valve by the low temperature in winter. A valve satisfying conditions above was designed in this study. Then, some tests were carried out on a test rig and a vehicle to verify the improvement of durability of a fuel cell stack.