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:
Apr. 11, 2023
Filed:
Jun. 24, 2021
Exhaust gas treatment system and method with reductant injection and close-coupled treatment element
Deere & Company, Moline, IL (US);
Danan Dou, Cedar Falls, IA (US);
Eric J. Hruby, Waterloo, IA (US);
Shyan-Cherng Huang, Cedar Falls, IA (US);
Deere & Company, Moline, IL (US);
Abstract
An exhaust gas treatment system for an internal combustion engine includes an exhaust gas pathway configured to receive exhaust gas from the internal combustion engine, a first treatment element positioned within the exhaust gas pathway, the first treatment element including a selective catalytic reduction (SCR) element, a first injector configured to selectively introduce ammonia gas into the exhaust gas pathway upstream of the first treatment element, a second injector configured to introduce diesel exhaust fluid into the exhaust gas pathway downstream of the first treatment element, and a second treatment element positioned within the exhaust gas pathway downstream of the second injector, the second treatment element including a SCR element.