| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a supply pump capable of using fuel as a lubricant of a cam chamber with a simple structure, by surely preventing the lubricant from infiltrating into the cam chamber from an external part. Ž<P>SOLUTION: This supply pump 10 is provided for forcibly feeding the fuel in a pressurizing chamber 35 to an injection device, by reciprocating a plunger 13 by following rotation of a cam part 22, and has a pump body 11 for inserting a camshaft 21 and having the cam chamber 20, a driving side bearing 23 arranged in one side part of the pump body 11, an anti-driving side bearing 24 arranged in the other side part of the pump body 11, a driving side seal 51 arranged on the cam chamber 20 side than the driving side bearing 23 in the one end part of the pump body 11, and an anti-driving side seal 52 arranged on the cam chamber 20 side more than the anti-driving side bearing 24 in the other side part of the pump body 11, and is constituted so that the fuel can infiltrate into the cam chamber 20 from the pressurizing chamber 35, while preventing the lubricant from infiltrating into the cam chamber 20 from the external part of the pump body 11. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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