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Self-tuning gross heat release computation for internal combustion engines

Tunestål, Per LU (2009) In Control Engineering Practice 17(4). p.518-524
Abstract
The paper describes a novel method for self-tuning gross heat release computation in internal combustion engines suitable for both online usage in combustion phasing control applications and post-processing of cylinder pressure measurements. The method estimates the polytropic exponents and cylinder pressure offsets immediately preceding and succeeding the combustion event, respectively, using a fast nonlinear least-squares method. The polytropic exponent and the pressure offset are subsequently interpolated during the combustion event and a net heat release computation is performed based on the interpolated exponent and pressure. The result is a self-tuning gross heat release algorithm with no need to model heat losses, crevice losses and... (More)
The paper describes a novel method for self-tuning gross heat release computation in internal combustion engines suitable for both online usage in combustion phasing control applications and post-processing of cylinder pressure measurements. The method estimates the polytropic exponents and cylinder pressure offsets immediately preceding and succeeding the combustion event, respectively, using a fast nonlinear least-squares method. The polytropic exponent and the pressure offset are subsequently interpolated during the combustion event and a net heat release computation is performed based on the interpolated exponent and pressure. The result is a self-tuning gross heat release algorithm with no need to model heat losses, crevice losses and blow-by explicitly. (C) 2008 Elsevier Ltd. All rights reserved. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Nonlinear, squares, Least, Estimation, Engine control, Cylinder pressure, Heat release
in
Control Engineering Practice
volume
17
issue
4
pages
518 - 524
publisher
Elsevier
external identifiers
  • wos:000264466600009
  • scopus:60249097824
ISSN
0967-0661
DOI
10.1016/j.conengprac.2008.09.012
language
English
LU publication?
yes
id
94bf8d65-3559-4531-a844-a91e4bef69c9 (old id 1401878)
date added to LUP
2009-05-28 14:23:57
date last changed
2017-08-06 03:44:15
@article{94bf8d65-3559-4531-a844-a91e4bef69c9,
  abstract     = {The paper describes a novel method for self-tuning gross heat release computation in internal combustion engines suitable for both online usage in combustion phasing control applications and post-processing of cylinder pressure measurements. The method estimates the polytropic exponents and cylinder pressure offsets immediately preceding and succeeding the combustion event, respectively, using a fast nonlinear least-squares method. The polytropic exponent and the pressure offset are subsequently interpolated during the combustion event and a net heat release computation is performed based on the interpolated exponent and pressure. The result is a self-tuning gross heat release algorithm with no need to model heat losses, crevice losses and blow-by explicitly. (C) 2008 Elsevier Ltd. All rights reserved.},
  author       = {Tunestål, Per},
  issn         = {0967-0661},
  keyword      = {Nonlinear,squares,Least,Estimation,Engine control,Cylinder pressure,Heat release},
  language     = {eng},
  number       = {4},
  pages        = {518--524},
  publisher    = {Elsevier},
  series       = {Control Engineering Practice},
  title        = {Self-tuning gross heat release computation for internal combustion engines},
  url          = {http://dx.doi.org/10.1016/j.conengprac.2008.09.012},
  volume       = {17},
  year         = {2009},
}