| 摘要 |
PROBLEM TO BE SOLVED: To improve moldability of an adapter and flexibility in terms of a mounting position and a mounting direction as distributing ability of fuel is ensured by a method wherein the virtual opening edge parts of a plurality of air fuel mixing passages approach each other, the section shape of each end part side situated upper stream is deformed in a linear shape so as to form a partition wall. SOLUTION: An adapter 50 made of resin comprises two air fuel mixture passages 51: and an air passage 52 to feed air. Further, a partition wall 53 with a given thickness, preferably 0.25 mm or more, is formed an end part, situated upper stream, between the two air fuel mixture passages 51. Further, the passage central lines B1 and B2 of the two air fuel mixture passages 51 are caused to cross each other in a one point situated upper stream from the adapter 50 and on the axis A of the adapter 50. The adapter 50 is mounted on the tip of an injection valve body such that the axis A coincides with the nozzle center of an injection nozzle. This constitution facilitates resin-molding of the adapter 50, ensures fuel distributing ability, and flexibility in terms of the mounting position and the mounting direction of the fuel injection valve can be improved.
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