Cummins Emission Solutions Inc.

Marc Alexander Greca

Todd A Corbet

Jinqian Gong

James C Clerc

Joseph M Brault

Premjee Sasidharan

Sergio Manuel Hernandez-Gonzalez

Yinghuan Lei

Bryon D Staebler

Santosh Kumar Ratan

Robert Edward Cochran

Uma Vajapeyazula

David C Hall

Karthik Venkata Rama Krishna Dadi

Alain Ngoy Tschimwang

Weichao Wang

Bradley V Jones

Rohil Daya

A controller for controlling operation of an aftertreatment system that is configured to treat constituents of an exhaust gas produced by an engine, the aftertreatment system including a selective catalytic reduction (SCR) catalyst, the controller configured to: generate a short-term cumulative degradation estimate of the SCR catalyst corresponding to reversible degradation of the SCR catalyst due to sulfur and/or hydrocarbons based on a SCR catalyst temperature parameter; generate a long-term cumulative degradation estimate of the SCR catalyst corresponding to thermal aging of the SCR catalyst based on the SCR catalyst temperature parameter; generate a combined degradation estimate of the SCR catalyst based on the short-term cumulative degradation estimate and the long-term cumulative degradation estimate; and adjust an amount of reductant and/or an amount of hydrocarbons inserted into the aftertreatment system based on the combined degradation estimate of the SCR catalyst.

Controller and method for controlling operation of an aftertreatment system based on short-term and long-term cumulative degradation estimates

Systems, methods, and apparatuses for adaptive regeneration of aftertreatment system components. The system may include an aftertreatment system and a controller. The controller is configured to access one or more parameters indicative of an ambient condition, determine a regeneration type of a regeneration process for a component of the aftertreatment system, determine an application in condition, and modify a parameter for the regeneration process for the component of the aftertreatment system. In some instances, the controller initiates the regeneration process. In some instances, the one or more parameters include an ambient air temperature, a reductant tank temperature, or a particulate matter sensor temperature. In some instances, the modified parameter includes a target regeneration temperature, a regeneration duration, a dwell time between regeneration process, a threshold value for the regeneration process, or a minimum regeneration temperature.

System for adaptive regeneration of aftertreatment system components

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Bargersville, IN, United States of America

Marc Alexander Greca