ELECTRIC PUMP

摘要

An electric oil pump constructed by integrally combining an electric motor with an oil pump, wherein the electric motor is composed of a motor casing, a drive shaft that is disposed in a motor housing chamber formed inside the motor casing and is rotatably supported, a rotor that is disposed on the drive shaft, and a stator that is located inside the motor housing chamber and is attached to the motor casing. The electric oil pump is equipped with an internal controller that controls application of electric power to the stator so as to cause the drive shaft to be driven to rotate via the rotor.

主权项

1. An electric pump comprising an integral combination of a brushless electric, motor and a liquid pump rotatably driven by the electric motor, wherein
the electric motor comprises a motor case, a motor drive shaft that is arranged in a case internal space formed inside the motor case and that is rotatably supported by the motor case, a rotor disposed on the motor drive shaft, and a stator that is positioned inside the case internal space so as to surround and oppose the rotor from the outward circumferential direction and that is mounted on the motor case; electric power application control means is provided for controlling application of electric power to the stator and performing control for rotatably driving the motor drive shaft via the rotor; and the electric power application control means is provided with:
a normal control mode for controlling application of electric power to the stator such that the motor drive shaft rotates in accordance with an externally inputted rotation command; anda heat generation control mode for controlling application of electric power to the stator such that the stator generates heat at a higher heating efficiency than the heating efficiency of the stator when the application of electric power is controlled in the normal mode.