| 摘要 |
PROBLEM TO BE SOLVED: To suppress vibrations and noise of a first motor generator in a driving device for a hybrid vehicle. SOLUTION: A rotor core 20 of the first motor generator (a first MG) 12 is shifts in an opposite direction to thrust of a hollow shaft 19 in regard to a stator core 21. When the first MG 12 functions as a generator, electromagnetic suction force is generated in the rotor core 20. The electromagnetic suction force generates in an opposite direction to the shifting direction of the rotor core 20 to the stator core 21, namely the same direction as the thrust. The hollow shaft 19 is pressed against a bearing 23 by the thrust and the electromagnetic suction force. Therefore, the hollow 19 is stable in an axial direction, and the vibrations and noise of the first MG 12 can be suppressed. COPYRIGHT: (C)2008,JPO&INPIT
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