Injection valve

摘要

A fuel injection valve includes: a magnetic coil; an armature; and a valve needle connected to the armature for actuating a valve closing body which forms, together with a valve seat surface, a seal seat. Formed downstream from the valve seat surface is a spray opening that has, at the transition from a first to a second spray opening segment, a tear-off edge such that the complete opening angle of the spray opening at the tear-off edge is greater than 270° over the entire circumferential tear-off edge, so that, going out from the tear-off edge, on the floor of the second spray opening segment of the spray opening, there extends a circumferential floor region that is recessed behind the transition plane in which the tear-off edge is situated.

主权项

1. An injection valve for a fuel injection system of an internal combustion engine, comprising:
an actuator; a movable valve component; a valve closing body which forms, together with a valve seat surface, a seal seat; and at least one spray opening formed downstream from the valve seat surface, the at least one spray opening having at least one upstream first spray opening segment having a first opening width, and having a downstream second spray opening segment having a second opening width greater than the first opening width, wherein at a transition from the first to the second spray opening segment, a tear-off edge is formed in such a way that a complete opening angle of the at least one spray opening at the tear-off edge is greater than 270° over an entire circumferential tear-off edge so that, going out from the tear-off edge on a floor of the second spray opening segment of the at least one spray opening, a recessed circumferential floor region extends behind a transition plan in which the tear-off edge is situated; wherein going out from the tear-off edge, the floor region which extends radially outward in recessed fashion extends with an oblique inclination up to a deepest point that does not run flush with an outer wall region of the second spray opening segment of the at least one spray opening.