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Title: System and method for controlling an engine based on ammonia storage in multiple selective catalytic reduction catalysts

A system according to the principles of the present disclosure includes a storage estimation module and an air/fuel ratio control module. The storage estimation module estimates a first amount of ammonia stored in a first selective catalytic reduction (SCR) catalyst and estimates a second amount of ammonia stored in a second SCR catalyst. The air/fuel ratio control module controls an air/fuel ratio of an engine based on the first amount, the second amount, and a temperature of a substrate disposed in the second SCR catalyst.
Authors:
;
Publication Date:
OSTI Identifier:
1226452
Report Number(s):
9,188,071
13/471,861
DOE Contract Number:
EE0003379
Resource Type:
Patent
Resource Relation:
Patent File Date: 2012 May 15
Research Org:
GM Global Technology Operations LLC, Detroit, MI (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS