Patent ID: 11920536
Assignee: nan
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F | IPC F

Claim 22:
23. A method of operating a fuel pump system for a vehicle, the fuel pump system including a primary fuel pump and an auxiliary fuel pump in-line with the primary fuel pump and fluidly connected to a fuel tank, and an electric motor for driving the auxiliary fuel pump, the method comprising:
providing an electronic control circuit electrically connected to the electric motor, and a pressure sensor at an output of the auxiliary fuel pump;
receiving, at the electronic control circuit, a signal from the pressure sensor corresponding to the output pressure measured by the pressure sensor at the output of the auxiliary fuel pump;
communicating, via a processing device associated with the electronic control circuit, an operational motor speed to the auxiliary fuel pump based on the signal received from the pressure sensor;
continuously adjusting, via the processing device, the operational motor speed based on the signal received from the pressure sensor to maintain a predetermined constant output pressure; and
providing, via a control panel switch, manually selectable modes of operation including a high boost mode set to a fixed voltage corresponding to the predetermined safe speed, the method further including operating the electric motor at the predetermined safe speed in response to selecting the high boost mode, wherein selecting the high boost mode bypasses the electronic control circuit.