Patent ID: 6945478

Claim:
A fuel injector having a housing extending a longitudinal axis, the housing including an inlet, an outlet and a passageway disposed between the inlet and the outlet, the fuel injector comprising: an electromagnetic actuator proximate the inlet, the electromagnetic actuator including an armature and an electromagnetic coil; a closure member operable via the electro actuator to occlude fuel flow to the outlet in a first position and operable to permit fuel flow to the outlet in a second position; and an orifice plate proximate the outlet, the orifice plate having first and second plate surfaces spaced at a predetermined distance from one another along a longitudinal axis, the predetermined distance comprises a distance between approximately 0.001 and 0.010 inch, and an orifice extending between the surfaces, the orifice including a first orifice surface and a second orifice surface being spaced from the first orifice surface, the first orifice surface having a first region including a first surface characteristic being oriented in a first direction oblique to the longitudinal axis, the second orifice surface having a second region having second surface characteristic being oriented in a second direction oblique to longitudinal axis.