| 摘要 |
PROBLEM TO BE SOLVED: To prevent the penetration of lubrication oil of a pump case into a bearing gap by projecting an outer circumferential edge of a flange between the bearing gap put between an inner ring and an outer ring of a rolling bearing and an inside bottom space of the pump case. SOLUTION: A fuel feeder is constructed of a pump case 1 housing an injection pump 2 and a fuel injection cam shaft 21 and a governor case 3, in which an extension part 21c provided with a governor weight and sleeves 26, 27 is introduced to the fuel injection cam shaft 21. Inside the pump case 1, a flange 21a arranged in the fuel injection cam shaft 21 is brought into contact with an inner ring 41a of a rolling bearing 41, while an outer circumferential edge part 21d of the flange 21a is extended to the position apart from a bearing center line 41e beyond an imaginary horizontal line 41d passing through the rotation center 41c of a steel ball 41 in the rolling bearing 41. In this way, the outer circumferential edge part 21d of the flange 21a is protruded between a bearing gap 41g, which is put between the inner ring 41a and an outer ring 41f of the rolling bearing 41, and an inside bottom space 1a of the pump case 1.
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