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:
Aug. 29, 2023
Filed:
Aug. 04, 2022
Nicholas Firsich, Clarkston, MI (US);
Alex Eskenazi-gold, Ferndale, MI (US);
David R Pedro, Troy, MI (US);
William P Attard, Brighton, MI (US);
Joseph D Falcon, Clawson, MI (US);
Nicholas Firsich, Clarkston, MI (US);
Alex Eskenazi-Gold, Ferndale, MI (US);
David R Pedro, Troy, MI (US);
William P Attard, Brighton, MI (US);
Joseph D Falcon, Clawson, MI (US);
FCA US LLC, Auburn Hills, MI (US);
Abstract
A port and direct fuel injection (PDI) fuel delivery system for a vehicle having an engine configured to selectively operate between a port fuel injection (PFI) mode, a gasoline direct injection (GDI) mode, and a PDI mode includes a PFI system including plurality of PFI injectors, and a GDI system including a plurality of GDI injectors. The PFI and GDI systems are configured to provide various split-ratios of fuel mass injection to the engine based on a particular engine operating condition. A controller is programmed to identify a known first long term fuel trim (LTFT) for a first split-ratio, identify a known second LTFT for a second split-ratio, generate a linear equation based on the known first and second LTFTs, and determine an unknown third LTFT for a third split-ratio by utilizing the linear equation to facilitate reducing fueling errors and emissions.