Patent ID: 7784711
Filing Date: 2010-08-31
Classification: F02M,Y10S

Abstract:
1. A fuel injector for an internal combustion engine comprising: a casing; a balanced metering servovalve in the casing that controls movement of an injection control rod along an axial cavity; said servovalve having; a sleeve having a shutter, said axial stem extending into said sleeve in a fluid tight manner so that said sleeve can axially slide along said axial stem between a closed position and an open position of said at least one radial segment, thereby controlling said movement of said injection control rod along said axial cavity; an electro-actuator having an armature that controls said axial sliding of said sleeve along said axial stem; an elastic member that exerts a force upon said armature that maintains said sleeve in said closed position, said electro-actuator being able to control said armature to overcome said force of said elastic member; and said armature being separate from said sleeve.