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Cylinder air/fuel ratio estimation using net heat release data

Tunestål, Per LU and Hedrick, J. Karl (2003) In Control Engineering Practice 11(3). p.311-318
Abstract
An estimation model which uses the net heat release profile for estimating the cylinder air/fuel ratio of a spark ignition engine is developed. The net heat release profile is computed from the cylinder pressure trace and quantifies the conversion of chemical energy of the reactants in the charge into thermal energy. The net heat release profile does not take heat- or mass transfer into account. Cycle-averaged air/fuel ratio estimates over a range of engine speeds and loads show an RMS error of 4.1% compared to measurements in the exhaust.
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Engine control, Engine modelling, Pressure, Least-squares estimation, Least-squares identification
in
Control Engineering Practice
volume
11
issue
3
pages
311 - 318
publisher
Elsevier
external identifiers
  • wos:000183597100008
  • scopus:0037359789
ISSN
0967-0661
DOI
10.1016/S0967-0661(02)00045-X
language
English
LU publication?
yes
id
b660983c-b221-4596-8869-1a8767fb2b5c (old id 163638)
date added to LUP
2007-07-04 09:21:34
date last changed
2018-05-29 11:01:52
@article{b660983c-b221-4596-8869-1a8767fb2b5c,
  abstract     = {An estimation model which uses the net heat release profile for estimating the cylinder air/fuel ratio of a spark ignition engine is developed. The net heat release profile is computed from the cylinder pressure trace and quantifies the conversion of chemical energy of the reactants in the charge into thermal energy. The net heat release profile does not take heat- or mass transfer into account. Cycle-averaged air/fuel ratio estimates over a range of engine speeds and loads show an RMS error of 4.1% compared to measurements in the exhaust.},
  author       = {Tunestål, Per and Hedrick, J. Karl},
  issn         = {0967-0661},
  keyword      = {Engine control,Engine modelling,Pressure,Least-squares estimation,Least-squares identification},
  language     = {eng},
  number       = {3},
  pages        = {311--318},
  publisher    = {Elsevier},
  series       = {Control Engineering Practice},
  title        = {Cylinder air/fuel ratio estimation using net heat release data},
  url          = {http://dx.doi.org/10.1016/S0967-0661(02)00045-X},
  volume       = {11},
  year         = {2003},
}