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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):
10,077,727
Application Number:
14/994,531
Assignee:
GM Global Technology Operations LLC (Detroit, MI)
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}
}

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Works referenced in this record:

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