Hyung Kook Kim

A Study on Sensing Method of the Stack Coolant Deficiency for FCEV

Abstract >> The sensing of a stack coolant deficiency is very important in that cooling performance of a fuelcell, overheating prevention of a stack or coolant heater. This paper explains the performance comparison betweenthe coolant contact/noncontact level sensors and coolant deficiency sensing logic using the pressure sensor in astagnant or circulating flow. Throughout the comparison, the pressure sensor is more suitable than the other sensorsin terms of the precision, fast response, sensing frequency. After the experiment, the pressure sensor is equippedto an FCEV(Fuel Cell Electric Vehicle) to verify sensing definitely. There was no miss-sensing using pressure sensor while FCEV runs in the conditions of the paved road and cross country road. Key words : Coolant Deficiency(냉각수 부족), Level Sensor(수위센서), Parameter Tuning(매개변수 조정), Coolant Deficiency Sensing Logic(냉각수 부족 감지 로직), Pressure Sensor(압력 센서), Stack Coolant (스택 냉각수) † Corresponding author : hyungkook@hyundai.com [ 접수일 : 2014.08.01 수정일 : 2014.10.02 게재확정일 : 2014.10.31 ]Copyright ⓒ 2014 KHNES