DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

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
F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02D - CONTROLLING COMBUSTION ENGINES
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 = {Fri Nov 20 00:00:00 EST 2015},
month = {Fri Nov 20 00:00:00 EST 2015}
}

Works referenced in this record:

Method of removing nitrogen oxides in exhaust gases from a diesel engine
patent, June 1991


Exhaust gas purification device for an engine
patent, May 1998


Method and a device for purifying combustion exhaust gas
patent, July 1998


Device for purifying exhaust gas of an engine
patent, July 1998


Exhaust gas purification device for an internal combustion engine
patent, August 2000


Device for purifying exhaust gas of internal combustion engine
patent, September 2000


Method and device for purifying exhaust gas of an engine
patent, February 2002


Real-time nitrogen oxides (NOx) estimation process
patent, August 2004


Exhaust gas aftertreatment installation and method
patent, May 2007


Engine exhaust emission control system providing on-board ammonia generation
patent, January 2009


Exhaust aftertreatment system with transmission control
patent, December 2009


Exhaust gas purification apparatus
patent, March 2010


Lean nitrogen oxide emission control system and method
patent, October 2011


Passive ammonia-selective catalytic reduction for NOx control in internal combustion engines
patent, March 2013


Emission control apparatus of internal combustion engine
patent-application, June 2002


Hybrid catalyst system for exhaust emissions reduction
patent-application, February 2007


Selective catalytic reduction system
patent-application, June 2007


Exhaust Gas Aftertreatment Installation and Method
patent-application, August 2007


Engine exhaust emission control system providing on-board ammonia generation
patent-application, November 2007


Method for Controlling Exhaust Gas Purification System
patent-application, July 2009


Catalyst monitoring system and monitoring method
patent-application, August 2009


Passive Ammonia-Selective Catalytic Reduction for NOx Control in Internal Combustion Engines
patent-application, February 2010


Lean nitrogen oxide emission control system and method
patent-application, March 2010


Exhaust purification device of an internal combustion engine
patent-application, March 2010


Passive Ammonia-Selective Catalytic Reduction for NOx Control in Internal Combustion Engines
patent-application, May 2010


Passive Ammonia-Selective Catalytic Reduction for NOx Control in Internal Combustion Engines
patent-application, May 2010


Exhaust aftertreatment system
patent-application, August 2010


Exhaust purification apparatus for internal combustion engine
patent-application, February 2011


Exhaust purification system of internal combustion engine
patent-application, May 2012


Exhaust purification system for internal combustion engine
patent-application, May 2012


Method for monitoring exhaust gas aftertreatment devices
patent, July 2012


Exhaust purification system for internal combustion engine
patent-application, September 2012


System And Method For Determining An Ammonia Generation Rate In A Three-Way Catalyst
patent-application, December 2012


Method For Operating A Spark-Ignition, Direct-Injection Internal Combustion Engine
patent-application, December 2012


System and Method for Controlling Ammonia Levels in a Selective Catalytic Reduction Catalyst Using a Nitrogen Oxide Sensor
patent-application, January 2013


Kinetics-Based Scr Control Model Improvement
patent-application, January 2014