| 摘要 |
PROBLEM TO BE SOLVED: To provide an electric supercharger with an intake flow passage that is not complicated, small in flow passage resistance, and high cooling efficiency in a motor control device.SOLUTION: The electric supercharger includes a compressor impeller 21 provided in an intake duct of an internal combustion engine, a motor for rotating and driving the compressor impeller, a turbine wheel 27 for rotating and driving the compressor impeller, a control device 23 for driving and controlling the motor, and a heat radiator 24 connected to the control device in a heat-conductive relation, configuring at least a portion of the intake duct, and performing heat radiation of the control device. Thereby, the control device can be efficiently cooled, and resistance in the intake duct of the internal combustion engine can be made small. |
