Systeme und Verfahren zur Messung von Abgasspezies und Scr-Katalysator-Nox-Speicherung für Scr-Bezogene Steuerungen und Diagnose

Details

Veröffentlichungs-Nr.

EP4715173

Anmeldetag

6. August 2020

Veröffentlichung

25. März 2026

Rechtsraum

EP

Abstract

Systems, apparatuses, and methods include a controller for an exhaust aftertreatment system including a SCR catalyst in exhaust gas-receiving communication with an engine and at least one reductant dosing system structured to provide reductant to the exhaust gas. The controller is structured to determine a concentration of one or more of NO and NO₂ at or proximate an inlet of the exhaust aftertreatment system and based on a dynamic model of the SCR catalyst, information indicative of a concentration of NOx at or proximate an outlet of the exhaust aftertreatment system, and information indicative of an amount of stored reductant in the SCR catalyst. The controller is further structured to command the at least one reductant doser to increase, decrease, or maintain an amount of reductant provided to the exhaust gas based on the determined concentration of one or more of NO and NO₂ in the exhaust gas.

Anmelder

Firma

Cummins, Inc.

Land

🇺🇸 USA