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

Sun, Min; Perry, Kevin L; Kim, Chang H

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

Abstract

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.

Inventors:: Sun, Min; Perry, Kevin L; Kim, Chang H

Issue Date:: 2014-12-30

Research Org.:: GM Global Technology Operations LLC, N/A (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1166775

Patent Number(s):: 8919099

Application Number:: 13/157,669

Assignee:: GM Global Technology Operations LLC (N/A)

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

Show more

F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01N - GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL
F01N3/2073 - {with means for generating a reducing substance from the exhaust gases}

F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02D - CONTROLLING COMBUSTION ENGINES
F02D2041/1433 - {using a model or simulation of the system}
F02D2041/1469 - {with determination means using an estimation}
F02D41/0235 - {in relation with the state of the exhaust gas treating apparatus
F02D41/1446 - {the characteristics being exhaust temperatures}

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
Y02T10/12 - Technologies for the improvement of indicated efficiency of a conventional ICE

Show less

DOE Contract Number:: EE0003379

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats


                    Sun, Min, Perry, Kevin L, and Kim, Chang H. System and method for determining an ammonia generation rate in a three-way catalyst.  United States: N. p., 2014. 
        Web.

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                    Sun, Min, Perry, Kevin L, & Kim, Chang H. System and method for determining an ammonia generation rate in a three-way catalyst.  United States.

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                    Sun, Min, Perry, Kevin L, and Kim, Chang H. Tue .  
        "System and method for determining an ammonia generation rate in a three-way catalyst".  United States.  https://www.osti.gov/servlets/purl/1166775.

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@article{osti_1166775,

  title        = {System and method for determining an ammonia generation rate in a three-way catalyst},

  author       = {Sun, Min and Perry, Kevin L and Kim, Chang H},

  abstractNote = {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.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2014},

  month        = {12}

}

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

Abstract

Citation Formats

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

Exhaust-gas cleaning system and method with internal ammonia generation, for the reduction of nitrogen oxides patent, December 2003

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

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

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

Internal combustion engine exhaust gas purification apparatus and method for controlling same patent-application, May 2010

Method for monitoring ammonia storage in an exhaust aftertreatment system patent-application, December 2010

Exhaust aftertreatment systems that include an ammonia-scr catalyst promoted with an oxygen storage material patent-application, July 2012

Method for monitoring exhaust gas aftertreatment devices patent, July 2012

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

Exhaust Gas Purifying Filter, System Of Regenerating Gasoline Particulate Filter, And Method Thereof patent-application, April 2013

System And Method For Controlling An Engine Based On Ammonia Storage In Multiple Selective Catalytic Reduction Catalysts patent-application, November 2013

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

Coordinated control of engine and after treatment systems patent, March 2017

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

Exhaust-gas cleaning system and method with internal ammonia generation, for the reduction of nitrogen oxides
patent, December 2003

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

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

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Lean nitrogen oxide emission control system and method
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Passive ammonia-selective catalytic reduction for NOx control in internal combustion engines
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Exhaust Gas Purifying Filter, System Of Regenerating Gasoline Particulate Filter, And Method Thereof
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