IN-WHEEL MOTOR DRIVING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an in-wheel motor driving device in which the temperature state of a deceleration part can be known more accurately than before.SOLUTION: An in-wheel motor driving device comprises: a motor part; a wheel hub bearing part; a deceleration part that decelerates the output rotation of the motor part and transmits it to the wheel hub bearing part; and a lubricating oil circuit that passes lubricating oil into the deceleration part. The lubricating oil circuit comprises: a lubricating oil tank 53; an oil supply passage that supplies the lubricating oil from the lubricating oil tank to the deceleration part; oil discharge passages 61 and 62 that discharge the lubricating oil from the deceleration part to the lubricating oil tank; and a temperature sensor 63 that is arranged in the oil discharge passages or the lubricating oil tank and detects the temperature of the lubricating oil.