Nozzle body, the valve assembly and fluid injection valve

摘要

A nozzle body for a fluid injection includes a cavity and a bottom wall delimiting the cavity at a fluid outlet end. The bottom wall is perforated by an injection hole having an inlet opening at an inner surface of the bottom wall and an outlet opening at an outer surface of the bottom wall. The outlet opening has an elongated slit shape having a centerline which is a circular arc with respect to the longitudinal axis. The inlet opening is spaced apart from the longitudinal axis by a radial distance. The inner surface has a concave shape extending away from the fluid outlet end from an apex of the inner surface. Further, the inlet opening is spaced apart from the apex by an axial distance that is smaller than said radial distance.

主权项

1. A nozzle body for a fluid injection valve, comprising:
a cavity extending along a longitudinal axis towards a fluid outlet end and having a bottom wall delimiting the cavity at the fluid outlet end, wherein the bottom wall includes an inner surface with a concave shape extending along the longitudinal axis away from an apex of the cavity disposed at the fluid outlet end, an injection hole perforating the bottom wall with an inlet opening at the inner surface of the bottom wall and an outlet opening at an outer surface of the bottom wall, wherein the outlet opening is in the shape of an elongated slit having a centerline which is a circular arc with respect to the longitudinal axis, wherein the inlet opening is spaced apart from the longitudinal axis by a radial distance, and wherein the inlet opening is spaced apart from the apex by an axial distance which is smaller than said radial distance.