Patent ID: 11952935
Assignee: TRANSPORTATION IP HOLDINGS, LLC
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 15:
16. A system, comprising:
an engine of a vehicle comprising a plurality of cylinders;
a first fuel system fluidly coupled to direct injectors of the plurality of cylinders and configured to supply a first fuel by injecting the first fuel;
a second fuel system fluidly coupled to intake port injectors and configured to supply a second fuel different than the first fuel;
a third fuel system fluidly coupled to one of the direct injectors or the intake port injectors and configured to supply a pre-mixture of the first and second fuels; and
a controller with instructions stored on non-transitory memory that cause the controller to:
in response to a comparison of an auto-ignition to a threshold level determining the auto-ignition being greater than the threshold level:
adjusting a substitution rate of the first fuel and the second fuel; and
retarding an injection timing of injection of the first fuel; and

in response to the comparison of the auto-ignition to the threshold level determining the auto-ignition to be equal to or less than the threshold level:
retarding a first fuel injection timing while maintaining the substitution rate in response to determining the auto-ignition level is less than or equal to the threshold level.