| 摘要 |
PROBLEM TO BE SOLVED: To provide a VCO (Valve Covered Orifice) type fuel injection valve which uniformly sprays fuel even when nozzle holes are formed in positions of different distances from a seat part. SOLUTION: The fuel injection valve 1 is formed so that a needle valve 20 reciprocating in an axis NA direction is disposed in a nozzle body 10 formed with the plurality of nozzle holes 11a, 11d in a tip and closes the nozzle holes when the seat part 21 of the needle valve 20 is seated in the nozzle body. The plurality of nozzle holes include those disposed at the positions different in distance from the seat part. An inner wall 13B of the nozzle body is formed with elongate grooves 12a, 12d disposed symmetrically about the axis and the nozzle holes 11a, 11d are formed in the elongate grooves 12a, 12d. COPYRIGHT: (C)2008,JPO&INPIT
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