Patent ID: 11920528
Assignee: CATERPILLAR INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 8:
9. A fuel control system for a gaseous fuel engine system comprising: a fueling control unit structured to: receive cylinder pressure signals from a plurality of in-cylinder pressure sensors in a gaseous fuel engine; detect preignition in one of a plurality of cylinders in the gaseous fuel engine based on one or more corresponding cylinder pressure signals; output a preignition mitigation fueling command for a fuel injector for the one of the plurality of cylinders to reduce a fuel injection amount for the one of the plurality of cylinders to a derated fuel injection amount that is based on a timing of the detected preignition, wherein the gaseous fuel includes a gaseous hydrogen fuel, wherein the fueling control unit is further structured to detect the preignition based on at least one of a magnitude, a timing, or a history, of cylinder pressure for the one of the plurality of cylinders, and wherein the fueling control unit is further structured to calculate a mean effective pressure (IMEP) of the one of the plurality of cylinders based on the history of cylinder pressure, and to detect the preignition based on the calculated IMEP.