| 摘要 |
<P>PROBLEM TO BE SOLVED: To minimize stirring resistance of oil, by suitably keeping the oil level in an electric motor housing chamber and a transmission housing chamber of a motor power device to ensure lubricating performance. <P>SOLUTION: Due to centrifugal force in a vehicle width direction due to turning of an automobile, oil in an electric motor housing chamber housing 74 housing an electric motor 11 and oil in a transmission 75 housing chamber housing a reduction gear and a differential gear 13 flow to-and-fro via oil communication passages 14d, 16d penetrating a partition wall 16. An opening 14e on the transmission housing chamber 75 side of the oil communication passages 14d, 16h is spaced from the partition wall 16. Hence, when oil moves from the transmission housing chamber 75 side to the electric motor housing chamber 74 side, it is possible to prevent the oil quantity on the electric motor housing chamber 74 side from increasing excessively and suppress an crease in resistance of stirring oil by a rotor of the electric motor 11 while keeping a constant oil amount on the transmission housing chamber 75 side to ensure lubricating performance for the reduction gear and the differential gear 13. <P>COPYRIGHT: (C)2009,JPO&INPIT |
