| Abstract:In order to study the oil immersion cooling performance of an electric fuel pump driving motor, based on the three-
dimensional model of cooling fluid and various motor components, and by fully considering the influence of physical quantities such as heat?
ing power and material properties of each component, the finite volume method was used to simulate the fluid-thermal coupling field of the
electric fuel pump motor, and the influences of different boundary conditions on the motor flow field and temperature field were analyzed.
The results show that the pressure loss of the flow channel and the maximum temperature of the motor can meet the operational require?
ments of the electric fuel pump under the maximum cooling fuel flow rate and the motor's maximum power. With the increase of cooling
flow rate or fuel viscosity, the pressure loss of the flow channel increases, and at the maximum cooling flow, the pressure loss increases by
about 2 kPa for every 1 mm 2 /s increase in fuel viscosity. The motor power and inlet temperature have a great influence on the temperature of
each motor components, and the temperature rises of motor components are approximately in linear relations with the fuel inlet temperature,
while the ambient temperature has little influence on the temperature field of the motor. The research results provide a theoretical basis for
the design and optimization of the oil immersion cooling flow channel of electric fuel pump motors. |
