US 12,281,622 B1
Fuel control system for internal combustion engine having multiple injection systems
J. Michael Gwidt, Brighton, MI (US); and Jeffrey M. Hutmacher, Fowlerville, MI (US)
Assigned to GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US)
Filed by GM Global Technology Operations LLC, Detroit, MI (US)
Filed on Apr. 10, 2024, as Appl. No. 18/631,664.
Int. Cl. F02D 19/06 (2006.01); F02M 55/02 (2006.01)
CPC F02D 19/061 (2013.01) [F02D 19/0684 (2013.01); F02D 19/0689 (2013.01); F02D 19/0692 (2013.01); F02M 55/025 (2013.01); F02D 2200/0602 (2013.01); F02D 2200/0606 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A 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 an 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 fuel delivery system and the second fuel delivery system, the controller being configured to selectively enable and disable operation of the first fuel delivery system and the second fuel delivery system based on one of a detected temperature and a detected pressure of fuel passing to corresponding ones of the first plurality of fuel injectors and the second plurality of fuel injectors;
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.