Patent ID: 8967502
Filing Date: 2015-03-03
Classification: F02D,F02M,Y02T

Abstract:
1. A fuel injector comprising: an injector body defining a first set of nozzle outlets, a second set of nozzle outlets, a first fuel inlet and a second fuel inlet; a dual solenoid actuator that includes a first armature, a first coil, a second armature and a second coil that share a common centerline and further includes a shared stator upon which the first coil and the second coil are mounted, the first armature and the second armature being coupled to a first pusher and a second pusher, respectively, the first pusher and the second pusher being operatively coupled to a first control valve member and a second control valve member, respectively, via a first valve seat and a second valve seat, respectively, said dual solenoid actuator being operatively coupled to a first needle valve member and a second needle valve member in the injector body, the first needle valve member and the second needle valve member movable upon movement of the first valve seat and second valve seat, respectively, by a corresponding movement of a shared spring to open or close a first pressure relief passage and a second pressure relief passage via the first pusher and the second pusher, respectively, and wherein the opening and closing of the first pressure relief passage and the second pressure relief passage opens and closes a first hydraulic surface of the first needle valve member and a second hydraulic surface of the second needle valve member; the dual solenoid actuator having a non-injection configuration at which the first armature is at an un-energized position and the second armature is at an un-energized position; the dual solenoid actuator having a first fuel injection configuration at which the first fuel inlet is fluidly connected to the first set of nozzle outlets, the first armature is at an energized position and the second armature is at the un-energized position; and the dual solenoid actuator having a second fuel injection configuration at which the second fuel inlet is fluidly connected to the second set of nozzle outlets, the first armature is at the un-energized position and the second armature is at an energized position.