| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel injection pump having excellent abrasion resistance and seizure resistance. Ž<P>SOLUTION: This fuel injection pump includes a drive shaft 20, a cam 21, a cam ring 23, a tappet 24, and a pump housing. The drive shaft 20 is driven by an engine, and the cam 21 is eccentrically arranged with respect to the drive shaft 20 and rotates together with the drive shaft 20. The cam ring 23 is rotatably supported on the periphery of the cam 21, and revolves by rotation of the drive shaft 20. The tappet 24 has one end abutting on the predetermined surface of the cam ring 23, and reciprocates by revolution of the cam ring 23. The pump housing reciprocatably supports the tappet 24, and also forms a fuel pressurization chamber 40 with fuel pressurized by the other end of the tappet 24. A through-hole 241 passed through one end and the other end is formed inside of the tappet 24. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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