| 摘要 |
PROBLEM TO BE SOLVED: To surely supply lubricating oil supplied to the inner wall of a front housing to a lip seal side. SOLUTION: An inner wall of a front housing 111 on which lubricating oil blown out of an injector passage 220 is collided is formed to be a slope surface 113 inclined downward more toward a bearing 150 side. Thus, lubricating oil supplied to the upper end side 113a of the slope surface 113 flows to the lower end side 113b of the slope surface 113 without falling through the slope surface 113 to a balancer 132 by its surface tension. Thus, since the lubricating oil is supplied to a lip seal 160 side (bearing 150 side) surely, the wear of the lip seal 160 is suppressed.
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