Honda Motor Co., Ltd.

Yoshito Tsukamoto

Hiroyuki Matsuoka

Yuta Ito

Munehiro Matsubara

Shigenao Maruyama

A vehicle includes a first rotary electric machine, a second rotary electric machine, and a control circuit. When the control circuit determines that a failure has occurred in the first rotary electric machine, the control circuit places the first rotary electric machine and a first transmission path as a power transmission path of the vehicle in the disconnection state, and places the second rotary electric machine and the first transmission path in the connection state. Further, when the control circuit determines that a failure has occurred in the second rotary electric machine, the control circuit places the first rotary electric machine and a first transmission path in the connection state, and place the second rotary electric machine and the first transmission path in the disconnection state.

Vehicle

A vehicle includes a first power transmission path, a first clutch, a first rotating electrical machine, a second power transmission path, a second clutch, and circuitry. The first clutch is provided in the first transmission path to select a connection state between a first connecting state and a first disconnecting state. The second clutch is provided in the second power transmission path to select a connection state between a second connecting state and a second disconnecting state. The circuitry is configured to control the first clutch and the second clutch such that the second clutch switches to the second disconnecting state in a case where the first clutch switches to the first connecting state so as to transmit the power from an internal combustion engine to a wheel and where a vehicle speed of the vehicle is larger than a first vehicle speed threshold value.

A temperature estimation apparatus for a rotating electric machine includes a coolant dissipator, a heat dissipation amount calculator, a coolant temperature calculator, and a temperature calculator. The coolant dissipator is to cool down a coolant by heat exchange with a cooling air outside a rotating electric machine. The heat dissipation amount calculator is to calculate heat dissipation amount of the coolant in the coolant dissipator based on a physical quantity correlating with air speed of the cooling air and a physical quantity correlating with flow rate of the coolant. The coolant temperature calculator is to calculate, based on the heat dissipation amount, temperature of the coolant that has passed through the coolant dissipator. The temperature calculator is to calculate, based on the temperature of the coolant, temperature of the rotating electric machine which the coolant cool down.

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Wako, Japan

Yoshito Tsukamoto