US Patent Issued to Caterpillar on Dec. 9 for "Dual fuel system having dual fuel injector and engine operating method" (Illinois Inventors)

ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,492,670, issued on Dec. 9, was assigned to Caterpillar Inc. (Peoria, Ill.).

"Dual fuel system having dual fuel injector and engine operating method" was invented by Eric Lee Schroeder (Germantown Hills, Ill.), David Todd Montgomery (Edelstein, Ill.), Dana Ray Coldren (Secor, Ill.) and Chad Koci (Washington, Ill.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A dual fuel system for an internal combustion engine includes a first fuel supply of a liquid pilot fuel, a primary fuel supply of a liquid primary fuel, and a dual fuel injector. The dual fuel injector includes a spill valve fluidly connected with a plunger cavity and movable to control a start of i...