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Title: System and method for determining an ammonia generation rate in a three-way catalyst

A system according to the principles of the present disclosure includes a rate determination module, a storage level determination module, and an air/fuel ratio control module. The rate determination module determines an ammonia generation rate in a three-way catalyst based on a reaction efficiency and a reactant level. The storage level determination module determines an ammonia storage level in a selective catalytic reduction (SCR) catalyst positioned downstream from the three-way catalyst based on the ammonia generation rate. The air/fuel ratio control module controls an air/fuel ratio of an engine based on the ammonia storage level.
Authors:
; ;
Publication Date:
OSTI Identifier:
1166775
Report Number(s):
8,919,099
13/157,669
DOE Contract Number:
EE0003379
Resource Type:
Patent
Research Org:
GM Global Technology Operations LLC, N/A (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY