US 11,939,904 B2
Optimized piston temperature control in gaseous fuel hydrogen engine system
Michael R Bochart, Washington, IL (US); Jaswinder Singh, Dunlap, IL (US); Patrick Seiler, Peoria, IL (US); and Eric Lee Schroeder, Germantown Hills, IL (US)
Assigned to Caterpillar Inc., Peoria, IL (US)
Filed by Caterpillar Inc., Peoria, IL (US)
Filed on Feb. 18, 2022, as Appl. No. 17/675,151.
Prior Publication US 2023/0265777 A1, Aug. 24, 2023
Int. Cl. F01P 3/08 (2006.01); F01M 1/02 (2006.01); F01P 7/14 (2006.01); F02B 43/12 (2006.01); F01P 3/00 (2006.01)
CPC F01P 3/08 (2013.01) [F01M 1/02 (2013.01); F01P 7/14 (2013.01); F02B 43/12 (2013.01); F01P 2003/006 (2013.01); F01P 2007/146 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of operating a gaseous fuel engine system comprising:
combusting a mixture containing a gaseous hydrogen fuel and air in a cylinder of an engine in the gaseous fuel engine system;
varying an at least one operating parameter of the engine to which a crown surface temperature of a piston within the cylinder is responsive;
populating a temperature model based on a value of the varied at least one operating parameter;
operating an oil spray apparatus to spray oil onto the piston based on the populated temperature model;
maintaining the crown surface temperature of the piston between a high temperature limit and a pre-ignition mitigation temperature limit based on the operating of the oil spray apparatus; and
wherein the varying an at least one operating parameter includes varying a ratio of the gaseous hydrogen fuel to a hydrocarbon fuel in the mixture containing the gaseous hydrogen fuel and air.