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Zero-dimensional modeling of NOx formation with least squares interpolation

Muric, Kenan; Stenlaas, Ola and Tunestål, Per LU (2014) In International Journal of Engine Research 15(8). p.944-953
Abstract
Physical models of NOx formation are becoming more and more interesting in the area of combustion feedback control. The fact that cylinder pressure sensors are made available on the market enables fast and accurate calculations of heat release, which is an essential part of every physical NOx formation model. This article describes such a zero-dimensional model for a diesel engine using crank angle-resolved cylinder pressure to determine heat release. The model also incorporates the thermal effect of exhaust gas recirculation that is proven to have a major effect on NOx formation rates. The reaction mechanisms used to describe NOx formation rates are given by the well-known Zeldovich mechanism. The model output results given in this... (More)
Physical models of NOx formation are becoming more and more interesting in the area of combustion feedback control. The fact that cylinder pressure sensors are made available on the market enables fast and accurate calculations of heat release, which is an essential part of every physical NOx formation model. This article describes such a zero-dimensional model for a diesel engine using crank angle-resolved cylinder pressure to determine heat release. The model also incorporates the thermal effect of exhaust gas recirculation that is proven to have a major effect on NOx formation rates. The reaction mechanisms used to describe NOx formation rates are given by the well-known Zeldovich mechanism. The model output results given in this article show an average deviation of about 12.0% from acquired measured NOx data. The least squares interpolation approach indicates a negligible difference from the original model with an average deviation of 1.2% in 25 measurement points. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
NOx, model, Zeldovich, interpolation, zero-dimensional, engine, thermodynamics
in
International Journal of Engine Research
volume
15
issue
8
pages
944 - 953
publisher
Professional Engineering Publishing
external identifiers
  • wos:000345300200007
  • scopus:84911439942
ISSN
1468-0874
DOI
10.1177/1468087413495843
language
English
LU publication?
yes
id
010d54b9-ca8d-44a7-a50f-c0143f826c2d (old id 4982914)
date added to LUP
2015-01-27 10:51:48
date last changed
2017-05-21 03:54:44
@article{010d54b9-ca8d-44a7-a50f-c0143f826c2d,
  abstract     = {Physical models of NOx formation are becoming more and more interesting in the area of combustion feedback control. The fact that cylinder pressure sensors are made available on the market enables fast and accurate calculations of heat release, which is an essential part of every physical NOx formation model. This article describes such a zero-dimensional model for a diesel engine using crank angle-resolved cylinder pressure to determine heat release. The model also incorporates the thermal effect of exhaust gas recirculation that is proven to have a major effect on NOx formation rates. The reaction mechanisms used to describe NOx formation rates are given by the well-known Zeldovich mechanism. The model output results given in this article show an average deviation of about 12.0% from acquired measured NOx data. The least squares interpolation approach indicates a negligible difference from the original model with an average deviation of 1.2% in 25 measurement points.},
  author       = {Muric, Kenan and Stenlaas, Ola and Tunestål, Per},
  issn         = {1468-0874},
  keyword      = {NOx,model,Zeldovich,interpolation,zero-dimensional,engine,thermodynamics},
  language     = {eng},
  number       = {8},
  pages        = {944--953},
  publisher    = {Professional Engineering Publishing},
  series       = {International Journal of Engine Research},
  title        = {Zero-dimensional modeling of NOx formation with least squares interpolation},
  url          = {http://dx.doi.org/10.1177/1468087413495843},
  volume       = {15},
  year         = {2014},
}