The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 08, 2026
Filed:
Feb. 18, 2025
GM Global Technology Operations Llc, Detroit, MI (US);
J. Michael Gwidt, Brighton, MI (US);
Jeffrey M. Hutmacher, Fowlerville, MI (US);
Mark Daniel Carr, Fenton, MI (US);
Chinmay Avachat, Rochester Hills, MI (US);
Brady Thomas Black, Elmer City, WA (US);
GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (US);
Abstract
A system and method of operating an internal combustion engine (ICE) having a plurality of cylinders. The system includes port and direct fuel injectors configured to inject fuel to each cylinder and an engine control module (ECM) in communication with the port fuel and direct fuel injectors. The ECM is configured to selectively deactivate and activate each cylinder of the plurality cylinders by either halting or initiating fuel injection into the cylinders and selectively transition fuel injection modes. The ECM is further configured to inject make-up direct injection of fuel into selected cylinders, based in part, on whether the cylinder transitioned from a direct injection (DI) mode into a port fuel injection (PFI) mode, from the DI mode to a port direct injection (PDI) mode, or from a PDI to a PFI mode, whether the cylinder received an actual PFI injection, and other engine variables.