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

Works referenced in this record:

Direct-injection spark-ignition engine
patent-application, January 2004


Selective catalytic reduction system
patent-application, June 2007


Method and device for purifying exhaust gas of engine
patent, April 2000


Catalyst System for the Reduction of NOx and NH3 Emissions
patent-application, July 2007


Exhaust gas purification apparatus
patent, March 2010


Narrow speed range diesel-powered engine system w/ aftertreatment devices
patent, June 2006


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


Systems and Methods for Exhaust Catalyst Temperature Control
patent-application, January 2016


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


Method and apparatus for operating a spark-ignited direct fuel injection engine
patent, November 2009


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


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


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


Engine control system for controlling in-cylinder fuel injection engine
patent, February 2003


Direct-injection spark-ignition system
patent, April 2012


Control Apparatus and Control Method of Multiple Cylinder
patent-application, June 2012


Use of Specific Engine Cylinders for Reductant Generation
patent-application, June 2017


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


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


Technique for Production of Ammonia on Demand in a Three Way Catalyst for a Passive Selective Catalytic Reduction System
patent-application, July 2010


Fuel Efficient Ammonia Generation Strategy for Lean-Burn Engines Utilizing Passive NH3-SCR for the Control of NOX
patent-application, August 2011


Emissions treatment system with NSR and SCR catalysts
patent-application, June 2005


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


Thermal Management Control Using Limited Bank Operation
patent-application, December 2015


Spark plug
patent-application, May 2003


Exhaust Gas Purification Apparatus for Internal Combustion Engine
patent-application, February 2017


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


Directional microphone assembly
patent, May 2003


Method and apparatus for controlling operation of a spark-ignition direct-injection engine
patent, May 2013


Method and Device for Treating Exhaust Gases of Internal Combustion Engines
patent-application, May 2008


Exhaust gas aftertreatment installation and method
patent, October 2010


Combined fuel injection and ingnition means
patent-application, September 2003


Spark plug
patent-application, January 2004


Controller for four-stroke cycle internal-combustion engine
patent, November 1996


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


Method for operating an internal combustion engine
patent, December 2006


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


Cylinder injection type internal combustion engine
patent-application, September 2002


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


System and method for enhanced combustion control in an internal combustion engine
patent, August 2003


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


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


Spark ignition direct injection engine with shaped multihole injectors
patent, December 2003


Two-cycle engine with fuel injection
patent, December 1981


In-cylinder injection type spark ignition internal combustion engine
patent-application, March 2007


NOx purifying catalyst
patent-application, January 2008


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


Exhaust Gas Port Treatment system
patent-application, February 2008


System and Method for Reducing NOx Emissions
patent-application, March 2008


System, Method, and Apparatus for Improved Desulfurization of Aftertreatment Components
patent-application, December 2015


Spark ingition type stratified combustion internal combustion engine
patent-application, May 2003


EGR Distributor Apparatus For Dedicated EGR Configuration
patent-application, August 2012


Insulator shield for spark plug
patent, May 2001


Automatic Set Adjustment System and Method for Engine Air-Fuel Ratio Control System
patent-application, March 2013


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


Internal combustion engine with injection of gaseous fuel
patent, February 2005


Cylinder Deactivation to Reduce Fuel Enrichment After Fuel Cutoff Modes
patent-application, April 2011


Engine cylinder deactivation to improve the performance of exhaust emission control systems
patent, June 2005


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


On-board ammonia generation and exhaust after treatment system using same
patent-application, April 2007