| 摘要 |
PURPOSE: A motor of an electrical power steering system is provided to suppress temperature rise of the motor used in the electric power steering. CONSTITUTION: A motor(30) of an electrical power steering system has a housing(31); a stator(32) fixed inside the housing; a rotor(33) rotatably disposed inside the stator; and a rotating shaft(34) installed in the center of the rotator and extended to the outside of the housing. Plural air circulation holes(35), to circulate air through rotation of the rotator to the outside and inside, are installed to the housing. Thus, temperature rise of the motor is suppressed.
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