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임동현(Donghyun Lim),신윤혁(Yoonhyuk Shin),박현호(Hyun-Ho Park),고성로(Sung-Ro Go),김성철(Sung Chul Kim) 한국자동차공학회 2015 한국자동차공학회 부문종합 학술대회 Vol.2015 No.5
In this study, the electronic expansion valve was developed for air conditioning system of vehicles. The electronic expansion valve exploit cam driving structure for low manufacturing cost and high productivity. The pressure-resistant and flow rate performances was evaluated using numerical analysis. In the results of mechanical analysis, maximum, stresses of the valve model are about 98 MPa and 223 MPa respectively on maximum operation condition and burst pressure condition. Also, The flow rates of CO₂ and R134a according to orifice opening are measurement using flow simulation. The flow rates of the refrigerants were increased by valve opening rate. The maximum flow rates of CO₂ and R134a were about 550 kg/h and 386 kg/h respectively.