Abstract
Electric Vehicle (EV) motors have the problem on heat removal. Arranging thermal-hydraulic characteristics in the motor is required. However, heat transfer characteristics in an EV motor is not clarified. The aim of the present study is to develop a means of predicting the temperature in the coaxial cylinders. In the present study, thermal network is introduced. With experimental apparatus simulating an EV motor, temperature at every part is measured. We build the thermal network in the experimental apparatus. We estimate the thermal resistance between every part., and evaluate applicability of the thermal network for coaxial cylinders.
