Patent ID: 7628340

Claim:
A heated fuel injector system, comprising: a fuel injector including: a fuel valve; an electromechanical actuator arranged for selectively opening and closing the fuel valve when DC electrical energy is applied to the electromechanical actuator; an induction heating coil for inducing heat in a metallic element of the fuel injector though a changing magnetic field when AC electrical energy is applied to the heating coil; and first and second injector terminals, the induction heating coil and the electromechanical actuator being electrically connected in parallel between the first and second injector terminals; a DC circuit connected to the first and second terminals for selectively providing DC electrical energy to actuate the electromechanical actuator, the DC electrical energy being substantially blocked by a high-pass filter comprising the induction heating coil; and an AC circuit connected to the first and second terminals for selectively providing AC electrical energy to activate the induction heating coil, the AC electrical energy being substantially blocked by a low-pass filter comprising the electromechanical actuator.