US Patent Issued to Caterpillar on Dec. 2 for "Dual fuel system and operating strategy metering fuel via varied fuel pump output" (Illinois Inventor)

ALEXANDRIA, Va., Dec. 2 -- United States Patent no. 12,486,809, issued on Dec. 2, was assigned to Caterpillar Inc. (Peoria, Ill.).

"Dual fuel system and operating strategy metering fuel via varied fuel pump output" was invented by Hoisan Kim (Dunlap, Ill.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A dual fuel system includes a first fuel supply of a first fuel, a second fuel supply of a second fuel, and a variable-output fuel pump. A fuel injector in the dual fuel system includes a combined-fuel outlet passage, a nozzle check movable to open and close the combined-fuel outlet passage to nozzle outlets, and a check valve positioned at least partially in a first fuel passage connected to the first fuel sup...