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:
Dec. 30, 2025
Filed:
Jun. 26, 2024
Fca Us Llc, Auburn Hills, MI (US);
Michael J Prucka, Auburn Hills, MI (US);
Joshua M Burt, Auburn Hills, MI (US);
FCA US LLC, Auburn Hills, MI (US);
Abstract
A vehicle includes an internal combustion engine having at least one cylinder bank, an exhaust system having a catalyst, and an engine control system with a controller configured to perform an operation to protect the catalyst during a cylinder misfire event. The operation includes monitoring and counting a number of cylinder misfires on each cylinder bank, determining if the cylinder misfire count exceeds a predetermined threshold count, and when the cylinder misfire count exceeds the predetermined threshold count in a particular cylinder bank, subsequently (i) setting a reduced engine torque limit and (ii) operating the particular cylinder bank in a stoichiometric fuel/air ratio, to thereby facilitate preventing excessively high temperatures at the catalyst due to the misfire event.