Fuel injection nozzle having an anti-leakage device

摘要

A nozzle for a gaseous fuel injector has a converging portion, a tip connected to the converging portion, and an anti-leakage device disposed at the tip to selectively inhibit leakage of a residual gaseous fuel from the nozzle.

主权项

1. A nozzle for a gaseous fuel injector, comprising:
a first body portion including a first flow passage and a gaseous fuel inlet fluidly connected to the first flow passage, the first flow passage defining a first gaseous fuel flow path; a converging body portion fixedly connected to the first body portion and including a second flow passage fluidly connected to the first flow passage, the second fuel passage defining a second gaseous fuel flow path, the second gaseous fluid flow path at one or more obtuse angles with the first gaseous fuel flow path; a tip portion fixedly connected to the converging portion and including a third flow passage and a gaseous fuel outlet, the third flow passage fluidly connected to the second flow passage; and an anti-leakage device disposed in the third flow passage and configured to selectively inhibit leakage of a residual gaseous fuel from the nozzle.