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임형진(Hyoungjin Lim),김상민(Sangmin Kim) 한국자동차공학회 2023 한국자동차공학회 학술대회 및 전시회 Vol.2023 No.11
In this paper, we propose an optimal heat dissipation design for an air-cooled MCU for an electric two-wheeled vehicle. Changed parts were limited to heat sink parts and thermal glue parts. Thermal conductivity, surface area, weight (heat capacity), thickness, and shape were selected as detailed modifiers, and the effect of each factor was analyzed by analyzing the time to reach 130℃ of the MOSFET device of each detail modifier. Although all the change factors affected the time to reach 130℃, the factor having the greatest influence was identified as the weight (thermal capacity) of the heat sink part. However, since the weight of the heat sink has a great influence on the material cost of the part, it can be said that an optimal cooling design plan considering the material cost is necessary.
임형진(Hyoungjin Lim),김상민(Sangmin Kim) 한국자동차공학회 2023 한국자동차공학회 학술대회 및 전시회 Vol.2023 No.11
In this paper, we propose an optimal heat dissipation design for an water-cooled MCU for an electric two-wheeled vehicle. Changed parts were limited to heat sink parts and coolant. Cooling channel width and length, cooling flow type, heatsink thickness, coolant inlet flow and coolant inlet temperature were selected as detailed modifiers, and the effect of each factor was analyzed by analyzing the temperature to reach saturation temperature of the MOSFET device of each detail modifier. Although all the change factors affected the temperature to reach saturation temperature, the factor having the greatest influence was identified as the temperature of coolant. However, since the cooling water inflow temperature is related to the cooling system such as the vehicles radiator and EWP, the cooling system cost can be reduced only by requiring the system to have an appropriate level of cooling water inflow temperature.
박성민(Seongmin Park),권효준(Hyojun Kwon),임형진(HyoungJin Lim),권상욱(Sangwook Kwon),유영상(Youngsang Yoo),손정민(Jeongmin Son),윤지용(Jiyong Yoon) 한국자동차공학회 2016 한국자동차공학회 학술대회 및 전시회 Vol.2016 No.11
One of the trend that does not changed in automobile industry is improving manufacturability, reducing weight and cost savings. For that purpose, glass fiber reinforced polyamide has replaced metal as the material of choice for intake manifold in many vehicle brands. currently, PA66+GF35 and PA6+GF30 has being applied globally in intake manifold. gasoline engine of Hyundai motor company also, PA6+GF30~35 is being applied. Since Plastic material applied to intake manifold, it brought smoother surfaces, higher design freedom and lower unit cost. Since 2012, Hyundai Motor Company have been developing PP Plastic that could reduce weight and cost, while maintaining PA material property. Especially, this PP Plastic will be applied to Kappa 1.4 MPI intake manifold that is being developed by Kefico since 2015. Because PA Plastic has been used to manufacture the Intake Manifold, there are many guidelines for design and analysis(CAE). but, There are no guidelines for PP plastic because PP plastic does not used as a material of the Intake Manifold. Through this paper, We Suggest Intake Manifold design guidelines for PP plastic.