| 摘要 |
A fuel injection nozzle of the outwardly opening poppet pintle type for use with internal combustion engines is provided which is economical to fabricate, assemble and recondition and which, at the same time, is capable of improved delivery and dispersion of fuel for optimum engine functioning even when the engine is intended to be operated at high speeds. The nozzle utilizes a nozzle holder which includes a separable holder body and holder body tip, both formed with an axial fuel passageway therethrough, and having aligned enlarged counterbores forming a chamber in which the upper end of a pintle valve is suspended by attachment to a slidable cup-shaped combination upper spring seat and valve hanger. The lower spring seat is also cup-shaped and is seated in the counterbore of the holder body tip to align the enlarged counterbores. The pintle valve stem, which is of smaller diameter than the fuel passageway of the body tip so as to provide an annular clearance throughout, has an enlarged collar and the lower spring seat has an eccentric aperture which cooperates with the passageway in the top to prevent the pintle valve from falling out of the tip if the stem breaks. The stem extends through the fuel passageway to the outer end of the tip where a conical valve seat is provided for engagement by an enlarged convex head on the end of the pintle valve stem.
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