Adaptive engine injection for emissions reduction

Title: Adaptive engine injection for emissions reduction

Abstract

NOx and soot emissions from internal combustion engines, and in particular compression ignition (diesel) engines, are reduced by varying fuel injection timing, fuel injection pressure, and injected fuel volume between low and greater engine loads. At low loads, fuel is injected during one or more low-pressure injections occurring at low injection pressures between the start of the intake stroke and approximately 40 degrees before top dead center during the compression stroke. At higher loads, similar injections are used early in each combustion cycle, in addition to later injections which preferably occur between about 90 degrees before top dead center during the compression stroke, and about 90 degrees after top dead center during the expansion stroke (and which most preferably begin at or closely adjacent the end of the compression stroke). These later injections have higher injection pressure, and also lower injected fuel volume, than the earlier injections.

Inventors:

Reitz, Rolf D. ^[1]

(Madison, WI): Sun, Yong (Madison, WI)

Issue Date:: 2008-12-16

Research Org.:: Univ. of Wisconsin, Madison, WI (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 985713

Patent Number(s):: 7464690

Application Number:: 11/754,402

Assignee:: Wisconsin Alumni Research Foundation (Madison, WI)

Patent Classifications (CPCs):: F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02D - CONTROLLING COMBUSTION ENGINES

F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02M - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF

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F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02D - CONTROLLING COMBUSTION ENGINES
F02D41/402 - {Multiple injections}
F02D41/3836 - {Controlling the fuel pressure}
F02D41/3035 - {a mode being the premixed charge compression-ignition mode}

F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02M - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
F02M45/02 - with each cyclic delivery being separated into two or more parts

Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
Y02T10/40 - Engine management systems

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DOE Contract Number:: FC26-06NT42628

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 33 ADVANCED PROPULSION SYSTEMS

Citation Formats


                    Reitz, Rolf D. Adaptive engine injection for emissions reduction.  United States: N. p., 2008. 
        Web.

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                    Reitz, Rolf D. Adaptive engine injection for emissions reduction.  United States.

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                    Reitz, Rolf D. Tue .  
        "Adaptive engine injection for emissions reduction".  United States.  https://www.osti.gov/servlets/purl/985713.

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@article{osti_985713,

  title        = {Adaptive engine injection for emissions reduction},

  author       = {Reitz, Rolf D.},

  abstractNote = {NOx and soot emissions from internal combustion engines, and in particular compression ignition (diesel) engines, are reduced by varying fuel injection timing, fuel injection pressure, and injected fuel volume between low and greater engine loads. At low loads, fuel is injected during one or more low-pressure injections occurring at low injection pressures between the start of the intake stroke and approximately 40 degrees before top dead center during the compression stroke. At higher loads, similar injections are used early in each combustion cycle, in addition to later injections which preferably occur between about 90 degrees before top dead center during the compression stroke, and about 90 degrees after top dead center during the expansion stroke (and which most preferably begin at or closely adjacent the end of the compression stroke). These later injections have higher injection pressure, and also lower injected fuel volume, than the earlier injections.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2008},

  month        = {12}

}

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Works referenced in this record:

Six-Mode Cycle Evaluation of the Effect of EGR and Multiple Injections on Particulate and NOx Emissions from a D.I. Diesel Engine
conference, February 1996

Montgomery, D. T.; Reitz, Rolf D.
International Congress & Exposition, SAE Technical Paper Series
https://doi.org/10.4271/960316

Reducing Particulate and NOx Using Multiple Injections and EGR in a D.I. Diesel
conference, February 1995

Pierpont, D. A.; Montgomery, D. T.; Reitz, Rolf D.
International Congress & Exposition, SAE Technical Paper Series
https://doi.org/10.4271/950217

Modeling Diesel Engine NOx and Soot Reduction with Optimized Two-Stage Combustion
conference, April 2006

Sun, Yong; Reitz, Rolf D.
https://doi.org/10.4271/2006-01-0027

Reducing Particulate and NOx Emissions by Using Multiple Injections in a Heavy Duty D.I. Diesel Engine
conference, March 1994

Tow, T. C.; Pierpont, D. A.; Reitz, Rolf D.
International Congress & Exposition, SAE Technical Paper Series
https://doi.org/10.4271/940897

Effect of Fuel Injection Rate Control on Reduction of Emissions and Fuel Consumption in a Heavy Duty DI Diesel Engine
conference, April 2005

Tanabe, Keiki; Kohketsu, Susumu; Nakayama, Shinjii
SAE 2005 World Congress & Exhibition, SAE Technical Paper Series
https://doi.org/10.4271/2005-01-0907

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Similar Records

Title: Adaptive engine injection for emissions reduction

Abstract

Citation Formats

Six-Mode Cycle Evaluation of the Effect of EGR and Multiple Injections on Particulate and NOx Emissions from a D.I. Diesel Engine conference, February 1996

Reducing Particulate and NOx Using Multiple Injections and EGR in a D.I. Diesel conference, February 1995

Modeling Diesel Engine NOx and Soot Reduction with Optimized Two-Stage Combustion conference, April 2006

Reducing Particulate and NOx Emissions by Using Multiple Injections in a Heavy Duty D.I. Diesel Engine conference, March 1994

Effect of Fuel Injection Rate Control on Reduction of Emissions and Fuel Consumption in a Heavy Duty DI Diesel Engine conference, April 2005

Six-Mode Cycle Evaluation of the Effect of EGR and Multiple Injections on Particulate and NOx Emissions from a D.I. Diesel Engine
conference, February 1996

Reducing Particulate and NOx Using Multiple Injections and EGR in a D.I. Diesel
conference, February 1995

Modeling Diesel Engine NOx and Soot Reduction with Optimized Two-Stage Combustion
conference, April 2006

Reducing Particulate and NOx Emissions by Using Multiple Injections in a Heavy Duty D.I. Diesel Engine
conference, March 1994

Effect of Fuel Injection Rate Control on Reduction of Emissions and Fuel Consumption in a Heavy Duty DI Diesel Engine
conference, April 2005