Combustion driven ammonia generation strategies for passive ammonia SCR system
Abstract
A method for controlling ammonia generation in an exhaust gas feedstream output from an internal combustion engine equipped with an exhaust aftertreatment system including a first aftertreatment device includes executing an ammonia generation cycle to generate ammonia on the first aftertreatment device. A desired air-fuel ratio output from the engine and entering the exhaust aftertreatment system conducive for generating ammonia on the first aftertreatment device is determined. Operation of a selected combination of a plurality of cylinders of the engine is selectively altered to achieve the desired air-fuel ratio entering the exhaust aftertreatment system.
- Inventors:
- Issue Date:
- Research Org.:
- GM GLOBAL TECHNOLOGY OPERATIONS LLC, Detroit, MI (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1334661
- Patent Number(s):
- 9,512,793
- Application Number:
- 13/652,549
- Assignee:
- GM GLOBAL TECHNOLOGY OPERATIONS LLC (Detroit, MI) DOEEE
- DOE Contract Number:
- EE0003379
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 2012 Oct 16
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 42 ENGINEERING; 54 ENVIRONMENTAL SCIENCES
Citation Formats
Toner, Joel G., Narayanaswamy, Kushal, Szekely, Jr., Gerald A., and Najt, Paul M. Combustion driven ammonia generation strategies for passive ammonia SCR system. United States: N. p., 2016.
Web.
Toner, Joel G., Narayanaswamy, Kushal, Szekely, Jr., Gerald A., & Najt, Paul M. Combustion driven ammonia generation strategies for passive ammonia SCR system. United States.
Toner, Joel G., Narayanaswamy, Kushal, Szekely, Jr., Gerald A., and Najt, Paul M. Tue .
"Combustion driven ammonia generation strategies for passive ammonia SCR system". United States. https://www.osti.gov/servlets/purl/1334661.
@article{osti_1334661,
title = {Combustion driven ammonia generation strategies for passive ammonia SCR system},
author = {Toner, Joel G. and Narayanaswamy, Kushal and Szekely, Jr., Gerald A. and Najt, Paul M.},
abstractNote = {A method for controlling ammonia generation in an exhaust gas feedstream output from an internal combustion engine equipped with an exhaust aftertreatment system including a first aftertreatment device includes executing an ammonia generation cycle to generate ammonia on the first aftertreatment device. A desired air-fuel ratio output from the engine and entering the exhaust aftertreatment system conducive for generating ammonia on the first aftertreatment device is determined. Operation of a selected combination of a plurality of cylinders of the engine is selectively altered to achieve the desired air-fuel ratio entering the exhaust aftertreatment system.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2016},
month = {12}
}
Save to My Library
You must Sign In or Create an Account in order to save documents to your library.