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

Claim 0:
1. A method of operating a gaseous fuel engine system comprising: monitoring a cylinder pressure in each of a plurality of cylinders combusting a gaseous fuel in a gaseous fuel engine; detecting preignition in one of the plurality of cylinders based on the monitored cylinder pressure; reducing 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 detecting preignition includes detecting the preignition based on at least one of a magnitude, a timing, or a history, of the monitored cylinder pressure, and further comprising calculating a mean effective pressure (IMEP) of the cylinder based on the history of the monitored cylinder pressure, and wherein the detecting preignition includes detecting preignition based on the calculated IMEP.