| 摘要 |
PROBLEM TO BE SOLVED: To efficiency cool a coil of an electric motor which is attached to a shaft for connecting a compressor of a supercharger to a turbine.SOLUTION: Fig. 4 for explaining a route of an oil pipe 32 is equivalent to one in which a core of a stator 22 indicated in Fig.1 is deployed while attention is paid to a portion of teeth 34. As indicated in the Fig.4, the oil pipe 32 is arranged at a periphery of the portion of the teeth 34 in a one-stroke-of pen shape. Specifically, the oil pipe 32 is arranged in parallel with side faces of the teeth 34, arranged so as to be folded along end faces at the end faces of the teeth 34 at a turbine 14 side (T-side), and also arranged so as to be transited to the end faces of the adjacent teeth 34 while being folded at the end faces of the teeth 34 at a compressor 12 side (C-side). A lubricant flowing in the oil pipe 32 alternately flows at the C-side and the T-side, and is finally discharged from the T-side.SELECTED DRAWING: Figure 4 |
