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:
Nov. 26, 2024
Filed:
Feb. 28, 2020
Cummins Emission Solutions Inc., Columbus, IN (US);
Anurag Kumra, Columbus, IN (US);
Jinqian Gong, Columbus, IN (US);
Arun Kumar Dasari, Indianapolis, IN (US);
Cummins Emission Solutions Inc., Columbus, IN (US);
Abstract
An aftertreatment system comprises a selective catalytic reduction (SCR) unit, a reductant injector configured to insert reductant into the aftertreatment system, a first NOsensor configured to measure an amount of NOgases at a location upstream of the reductant injector, and a second NOsensor configured to measure an amount of NOgases at a location downstream of the SCR unit. A controller is programmed to estimate an amount of reductant deposits formed in the aftertreatment system based on at least the amount of NOgases measured at the location upstream of the reductant injector, the amount of NOgases measured at the location downstream of the SCR unit, and an amount of reductant that has been inserted into the aftertreatment system. The controller adjusts an amount of reductant to be inserted into the aftertreatment system based on the estimated amount of reductant deposits formed in the aftertreatment system.