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

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

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

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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 F02 - COMBUSTION ENGINES F02D - CONTROLLING COMBUSTION ENGINES

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION

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F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02D - CONTROLLING COMBUSTION ENGINES
F02D2041/1469 - {with determination means using an estimation}

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

F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02D - CONTROLLING COMBUSTION ENGINES
F02D41/0235 - {in relation with the state of the exhaust gas treating apparatus

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}
F02D41/1446 - {the characteristics being exhaust temperatures}

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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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