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

Abstract

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.

Inventors:
;
Issue Date:
Research Org.:
GM Global Technology Operations LLC, Detroit, MI (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1226452
Patent Number(s):
9188071
Application Number:
13/471,861
Assignee:
GM Global Technology Operations LLC
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01N - GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
DOE Contract Number:  
EE0003379
Resource Type:
Patent
Resource Relation:
Patent File Date: 2012 May 15
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS

Citation Formats

Sun, MIn, and Perry, Kevin L. System and method for controlling an engine based on ammonia storage in multiple selective catalytic reduction catalysts. United States: N. p., 2015. Web.
Sun, MIn, & Perry, Kevin L. System and method for controlling an engine based on ammonia storage in multiple selective catalytic reduction catalysts. United States.
Sun, MIn, and Perry, Kevin L. Fri . "System and method for controlling an engine based on ammonia storage in multiple selective catalytic reduction catalysts". United States. https://www.osti.gov/servlets/purl/1226452.
@article{osti_1226452,
title = {System and method for controlling an engine based on ammonia storage in multiple selective catalytic reduction catalysts},
author = {Sun, MIn and Perry, Kevin L.},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2015},
month = {11}
}

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