Patent ID: 7481376
Filing Date: 2009-01-27
Classification: F02M

Abstract:
1. A fuel injector for an internal combustion engine, comprising: a valve body; a valve seat associated with the valve body, the valve seat defining an outlet opening through which fuel may flow; an armature associated with the valve body and movable with respect to the valve body between a first position and a second position, the armature being associated with a closure member proximate the outlet opening and contiguous to the valve seat when in the first position, and spaced from the valve seat when in the second position; an electromagnetic coil being energizable to provide magnetic flux that moves the armature between the first and second positions to control liquid fuel flow through the outlet opening; a secondary coil being energizable to provide a magnetic field to inductively heat the valve body and thereby vaporize liquid fuel as it exits the outlet opening, and a capacitor electrically connected between the electromagnetic coil and the heating coil, wherein the electromagnetic coil is on a circuit and is constructed and arranged to receive pulse width direct current modulation from the circuit, and wherein the secondary coil is on the same said circuit and is constructed and arranged to receive alternating current from said circuit.