Patent ID: 11898526
Assignee: ROBERT BOSCH GMBH
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 0:
1. A fuel injector comprising
a fuel injector housing;
a valve seat disposed in the fuel injector housing, the valve seat including
a base that is mechanically connected to an end of the fuel injector housing and includes an inner surface, and
an insert that cooperates with the base to define a spray hole that extends between the inner surface and an exterior of the valve seat; and

a valve body disposed in the fuel injector housing and operable to move along a longitudinal axis of the fuel injector housing between a first position in which the valve body abuts the inner surface and in which fluid is prevented from passing through the spray hole, and a second position in which the valve body is spaced apart from the inner surface and in which fluid is permitted to pass through the spray hole, wherein, a surface of the insert includes surface features that engage with corresponding surface features formed on a surface of the base so as to retain the insert in a predetermined rotational orientation about the longitudinal axis relative to the base,, the insert has a polygonal peripheral shape when viewed in a cross section that is transverse to the longitudinal axis, a corner of the polygonal peripheral shape of the insert corresponding to one of the surface features of the insert, and, the insert is disposed in a vacancy of the base that has a corresponding peripheral shape, a corner of the polygonal peripheral shape of the vacancy corresponding to one of the surface features of the base.