Toyota Jidosha Kabushiki Kaisha

Aisin Aw Co., Ltd.

Shinjiro Suzuki

Taketo Takeuchi

Kazuki Asada

A cooling systemincludes an electric oil pump, an outside air temperature sensor, an oil temperature sensor, and a controller. The controllerpermits the actuation of the electric oil pumpin one of a first case where an oil temperature To is equal to or greater than a first threshold (A) and where an outside air temperature Ta is equal to or greater than a second threshold (B), a second case where the outside air temperature Ta is less than the second threshold (B) and where the oil temperature To is equal to or greater than a third threshold (C) higher than the first threshold (A), and a third case where the oil temperature To is less than the first threshold (A) and where the outside air temperature Ta is equal to or greater than a fourth threshold (D) higher than the second threshold (B).

Cooling system and operation method of electric oil pump in cooling system

A rotary electrical machine cooling apparatus includes: a rotary electrical machine including a stator having an annular resin portion which covers a coil end, and a rotor; and a cooling portion that injects a coolant from an upper side to the annular resin portion. The annular resin portion includes: an annular main body portion, and a plurality of island portions that protrude in the axial direction from a plurality of positions in a circumferential direction of an axially outer end face of the annular main body portion. The plurality of island portions include a plurality of first island portions having first maximum circumferential lengths and a second island portion that has a second maximum circumferential length Land the coolant impinges on the outer circumferential face to flow in a circumferential direction. Thus, the coolability of the coil can be improved.

Rotary electrical machine cooling apparatus

A thermistor module disposed in an insertion hole formed in a mold material that covers a stator coil of a rotary electric machine, and configured to measure a temperature of the stator coil includes: a heat collection member that faces an inner peripheral surface of the insertion hole in a state where the thermistor module is disposed in the insertion hole.

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Kariya, Japan

Shinjiro Suzuki