Patent Document ID: 20150337786
Application ID: 14758882
Patent Flag: 0

Claim One:
1. A fuel injector for use within a direct injection fuel injection system having a common rail for supplying fuel at a determined delivery pressure, the fuel injector comprising: an injector needle slidably disposed within a housing, the injector needle and the housing together providing a control chamber wherein the control chamber is fluidly connected with both a first control orifice within a connection with pressurized fuel from the common rail and a second control orifice within a connection with a drain line so that fluid pressure can be regulated within the control chamber by way of control of fluid flow through the first and second control orifices, a delivery chamber including a port for connection with the pressurized fuel from the common rail and an injection orifice from which fuel can be injected upon movement of the injector needle, and a feedback chamber being in fluid communication with at least one internal feedback spool valve that can be actuated by increased pressure within the feedback chamber to close the first and second control orifices of the control chamber based upon movement of the injector needle.