Engine control systems and methods for nitrogen oxide reduction

Sczomak, David P.; Gallon, Robert J.; McAlpine, Robert S.; Solomon, Arun S.

Title: Engine control systems and methods for nitrogen oxide reduction

Abstract

A fuel control module controls fuel injection of an engine based on a predetermined lean air/fuel ratio. The predetermined lean air/fuel ratio is fuel lean relative to a stoichiometric air/fuel ratio for the fuel. A cylinder control module selectively deactivates opening of intake and exhaust valves of M cylinders of the engine to increase removal of nitrogen oxide (NOx) from exhaust. M is an integer greater than 0 and less than a total number of cylinders of the engine. The fuel control module further: disables fueling of the M cylinders while opening of the intake and exhaust valves of the M cylinders is deactivated; and, while fueling of the M cylinders is disabled and opening of the intake and exhaust valves of the M cylinders is deactivated, controls fuel injection of other cylinders based on a predetermined rich air/fuel ratio that is fuel rich relative to the stoichiometric air/fuel ratio.

Inventors:: Sczomak, David P.; Gallon, Robert J.; McAlpine, Robert S.; Solomon, Arun S.

Issue Date:: 2018-09-18

Research Org.:: GM Global Technology Operations LLC, Detroit, MI (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1483376

Patent Number(s):: 10077727

Application Number:: 14/994,531

Assignee:: GM Global Technology Operations LLC (Detroit, MI)

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

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F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01N - GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL
F01N2430/02 - by cutting out a part of engine cylinders

F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02D - CONTROLLING COMBUSTION ENGINES
F02D13/00 - Controlling the engine output power by varying inlet or exhaust valve operating characteristics, e.g. timing

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 F01 - MACHINES OR ENGINES IN GENERAL F01N - GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL
F01N2900/1614 - NOx amount trapped in catalyst
F01N2900/08 - said parameters being related to the engine
F01N3/0814 - {combined with catalytic converters, e.g. NOx absorption/storage reduction catalysts}

F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02D - CONTROLLING COMBUSTION ENGINES
F02D13/06 - Cutting-out cylinders

F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01N - GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL
F01N3/0842 - {Nitrogen oxides}
F01N3/2066 - {Selective catalytic reduction [SCR]}

F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02D - CONTROLLING COMBUSTION ENGINES
F02D2041/0012 - {with selective deactivation of cylinders}
F02D41/3005 - {Details not otherwise provided for}

F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01N - GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL
F01N2610/02 - the substance being ammonia or urea

F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02D - CONTROLLING COMBUSTION ENGINES
F02D41/0087 - {Selective cylinder activation, i.e. partial cylinder operation
F02D41/0275 - {the exhaust gas treating apparatus being a NOx trap or adsorbent}
F02D2200/0806 - NOx storage amount, i.e. amount of NOx stored on NOx trap

F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01N - GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL
F01N2900/1818 - Concentration of the reducing agent
F01N2900/1622 - Catalyst reducing agent absorption capacity or consumption amount

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DOE Contract Number:: EE00006853

Resource Type:: Patent

Resource Relation:: Patent File Date: 2016 Jan 13

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING

Citation Formats


                    Sczomak, David P., Gallon, Robert J., McAlpine, Robert S., and Solomon, Arun S. Engine control systems and methods for nitrogen oxide reduction.  United States: N. p., 2018. 
        Web.

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                    Sczomak, David P., Gallon, Robert J., McAlpine, Robert S., & Solomon, Arun S. Engine control systems and methods for nitrogen oxide reduction.  United States.

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                    Sczomak, David P., Gallon, Robert J., McAlpine, Robert S., and Solomon, Arun S. Tue .  
        "Engine control systems and methods for nitrogen oxide reduction".  United States.  https://www.osti.gov/servlets/purl/1483376.

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@article{osti_1483376,

  title        = {Engine control systems and methods for nitrogen oxide reduction},

  author       = {Sczomak, David P. and Gallon, Robert J. and McAlpine, Robert S. and Solomon, Arun S.},

  abstractNote = {A fuel control module controls fuel injection of an engine based on a predetermined lean air/fuel ratio. The predetermined lean air/fuel ratio is fuel lean relative to a stoichiometric air/fuel ratio for the fuel. A cylinder control module selectively deactivates opening of intake and exhaust valves of M cylinders of the engine to increase removal of nitrogen oxide (NOx) from exhaust. M is an integer greater than 0 and less than a total number of cylinders of the engine. The fuel control module further: disables fueling of the M cylinders while opening of the intake and exhaust valves of the M cylinders is deactivated; and, while fueling of the M cylinders is disabled and opening of the intake and exhaust valves of the M cylinders is deactivated, controls fuel injection of other cylinders based on a predetermined rich air/fuel ratio that is fuel rich relative to the stoichiometric air/fuel ratio.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2018},

  month        = {9}

}

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Works referenced in this record:

A NO_x reduction system using ammonia-storage selective catalytic reduction in rich/lean excursions
journal, November 2007

Nakatsuji, Tadao; Matsubara, Manabu; Rouistenmäki, Juhana
Applied Catalysis B: Environmental, Vol. 77, Issue 1-2, p. 190-201
https://doi.org/10.1016/j.apcatb.2007.07.018

Three-Way Catalyst Design for Urealess Passive Ammonia SCR: Lean-Burn SIDI Aftertreatment System
conference, April 2011

Kim, Chang Hwan; Perry, Kevin; Viola, Michael
SAE 2011 World Congress & Exhibition
https://doi.org/10.4271/2011-01-0306

In-Situ NH3 Generation for SCR NOx Applications
conference, October 2002

Ogunwumi, S.; Fox, R.; Patil, M. D.
SAE Powertrain & Fluid Systems Conference & Exhibition
https://doi.org/10.4271/2002-01-2872

“Catalytic Engine” NOx Reduction of Diesel Engines with New Concept Onboard Ammonia Synthesis System
conference, February 1992

Nakahira, Toshio; Tsujimura, Kinji; Kakegawa, Toshiaki
International Congress & Exposition
https://doi.org/10.4271/920469

Combustion Characteristics of a Spray-Guided Direct-Injection Stratified-Charge Engine with a High-Squish Piston
conference, April 2005

Szekely, Gerald A.; Alkidas, Alex C.
SAE 2005 World Congress & Exhibition, SAE Technical Paper Series
https://doi.org/10.4271/2005-01-1937

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Similar Records

Title: Engine control systems and methods for nitrogen oxide reduction

Abstract

Citation Formats

A NOx reduction system using ammonia-storage selective catalytic reduction in rich/lean excursions journal, November 2007

Three-Way Catalyst Design for Urealess Passive Ammonia SCR: Lean-Burn SIDI Aftertreatment System conference, April 2011

In-Situ NH3 Generation for SCR NOx Applications conference, October 2002

“Catalytic Engine” NOx Reduction of Diesel Engines with New Concept Onboard Ammonia Synthesis System conference, February 1992

Combustion Characteristics of a Spray-Guided Direct-Injection Stratified-Charge Engine with a High-Squish Piston conference, April 2005

A NO_x reduction system using ammonia-storage selective catalytic reduction in rich/lean excursions
journal, November 2007

Three-Way Catalyst Design for Urealess Passive Ammonia SCR: Lean-Burn SIDI Aftertreatment System
conference, April 2011

In-Situ NH3 Generation for SCR NOx Applications
conference, October 2002

“Catalytic Engine” NOx Reduction of Diesel Engines with New Concept Onboard Ammonia Synthesis System
conference, February 1992

Combustion Characteristics of a Spray-Guided Direct-Injection Stratified-Charge Engine with a High-Squish Piston
conference, April 2005