Fuel control system for internal combustion engine having multiple injection systems

A vehicle comprising:

• a body defining a passenger compartment;
• a plurality of wheels supporting the body;
• an internal combustion engine supported in the body and operatively connected to at least one of the plurality of wheels, the internal combustion engine including a plurality of cylinders, an intake system including an intake plenum, and an intake valve selectively connecting the intake system with at least one of the plurality of cylinders;
• and
• a fuel system fluidically connected to the internal combustion engine, the fuel system comprising:
• a first fuel rail configured to be connected to a source of fuel;
• a first fuel delivery system, including a first plurality of fuel injectors, connected to the first fuel rail, the first plurality of fuel injectors being configured to inject an amount of fuel into a first portion of the internal combustion engine;
• a second fuel rail configured to be connected to the source of fuel;
• a second fuel delivery system, including a second plurality of fuel injectors, connected to the second fuel rail, the second plurality of fuel injectors being configured to inject an amount of fuel into a second portion of the internal combustion engine that is distinct from the first portion;
• and
• a controller operatively connected to the first plurality of fuel injectors and the second plurality of fuel injectors, the controller being configured to selectively enable and disable operation of select ones of the first plurality of fuel injectors and the second plurality of fuel injectors based on one of a detected temperature and a detected pressure of fuel passing to corresponding ones of the first fuel rail and the second fuel rail;
• wherein the controller is configured to selectively enable and disable operation of the first fuel delivery system and the second fuel delivery system to maintain the detected temperatures and pressures in the first fuel rail and the second fuel rail below a preselected temperature threshold and/or below a preselected pressure threshold.

A method of operating multiple fuel injection systems for an internal combustion engine supported in a vehicle, the method comprising:

• injecting fuel into a first portion of the internal combustion engine through a first plurality of fuel injectors;
• injecting fuel into a second portion of the internal combustion engine that is distinct from the first portion through a second plurality of fuel injectors;
• detecting an operating mode of the vehicle;
• disabling the first plurality of fuel injectors based on the operating mode of the vehicle;
• detecting one of a temperature and a pressure of fuel at the first plurality of fuel injectors at a first fuel rail;
• and
• activating the first plurality of fuel injectors if the one of the temperature and pressure of the fuel exceeds a selected threshold to maintain the detected temperature and pressure in the first fuel rail below a preselected temperature threshold and below a preselected pressure threshold.