Fuel injection valve

摘要

Fuel injection valve with conical valve seat surface that abuts a valve body to seal fuel, fuel injection orifices having an inlet opening formed on the valve seat surface, wherein fuel sprays injected from the plurality of fuel injection orifices include a first fuel spray constituted by a fuel spray injected from at least one fuel injection orifice and a second fuel spray constituted by a plurality of fuel sprays injected at an outer periphery of the first fuel spray, and a fuel injection orifice that injects the first fuel spray constituted with a plane that includes an orifice axis connecting a center of an inlet with a center of an outlet of the fuel injection orifice, parallel to a center axis of the fuel injection valve intersecting a plane, a conical apex that forms the valve seat surface to form an inclination angle that is larger than 0°.

主权项

1. A fuel injection valve comprising:
a valve seat surface that abuts a valve body to seat fuel; and a plurality of fuel injection orifices having an inlet opening formed on the valve seat surface, wherein the plurality of fuel injection orifices include a first injection orifice and a plurality of second injection orifices, orifice axes connecting a center of an inlet with a center of an outlet in the second injection orifices are symmetrically arranged with respect to a plane of symmetry including a center axis of the fuel injection valve, a center of the inlet opening of the first injection orifice is separated without contacting the plane of symmetry, and a plane that includes an orifice axis connecting a center of an inlet with a center of an outlet in one of the second injection orifices and is parallel to the center axis of the fuel injection valve intersects a plane including a straight line passing through the center of the inlet of the one second injection orifice and a conical apex that forms the valve seat surface as well as the center axis of the fuel injection valve to form an inclination angle that is larger than 0°.