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. 10, 2021
Filed:
Mar. 17, 2020
Denso International America, Inc., Southfield, MI (US);
Edward Szczepanski, Grosse Pointe Woods, MI (US);
DENSO International America, Inc., Southfield, MI (US);
Abstract
A system for enhancing internal combustion engine (ICE) exhaust gas aftertreatment includes a first universal heated exhaust gas oxygen (UHEGO) sensor disposed upstream from a first three-way catalytic (TWC) converter and a second UHEGO sensor disposed downstream from the first TWC converter and upstream from a second TWC converter. An engine controller for an ICE is included and is in communication with the first UHEGO sensor and the second UHEGO sensor. The engine controller is configured to monitor and estimate a current oxygen storage capacity (OSC) of the first TWC converter and adjust at least one target exhaust gas lambda parameter as a function of the current OSC of the first TWC converter such that compensation for degradation of the first TWC converter over time is provided.