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}
}
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