| 摘要 |
PROBLEM TO BE SOLVED: To reduce energy required for supplying lubricating coolant to a motor unit and simplify a liquid circuit for the lubricating coolant. SOLUTION: A through hole 84 is formed in the connecting portion between an engine output shaft 28 and the outer rotor 34 of a motor MG1, and lubricating coolant is supplied to a supply channel 60 formed in the center of the rotating shaft 31 of the motor unit 30 using pressure from an oil pump 70. Since engine output shafts 28 are often low in number of revolutions as compared with driving shafts 90, energy required for supplying lubricating coolant could be reduced. The lubricating coolant supplied to the supply channel 60 is supplied to all parts of the motor unit 30 through a plurality of through holes 62. Further, a branch pipe 86 is connected to the fluid conduit pipe 82 formed in the case 80, and the lubricating coolant is supplied direct to the outer rotor 34 of the motor MG1 through the branch pipe 86.
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