Patent ID: 8662056

Claim:
A system for controlling fuel pressure in a fuel delivery system, said system comprising: a fuel pump having an inlet configured to receive fuel from a fuel source and an outlet configured to output fuel characterized as at a fuel pressure; and an inlet control valve interposed between the inlet and the fuel source, said inlet control valve operable to an open state whereby the inlet is in fluid communication with the fuel source, and operable to a closed state whereby fluid communication between the inlet and the fuel source is obstructed, wherein said inlet control valve is operated to the closed state by an electrical signal applied to the inlet control valve, wherein said electrical signal includes a pull-in portion of the electrical signal that is applied to the inlet control valve having a pull-in time interval that is varied based on the fuel pressure to reduce electrical energy consumed and reduce acoustic noise generated by the fuel delivery system, wherein said electrical signal further includes a hold portion after the pull-in portion, wherein said pull-in time interval is such that the hold portion begins before the inlet control valve is in the closed state.