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LQG Control for Minimization of Emissions in a Diesel Engine

Henningsson, Maria LU ; Ekholm, Kent LU ; Strandh, Petter LU ; Johansson, Rolf LU and Tunestål, Per LU (2008) IEEE International Conference on Control Applications, 2008 In 2008 IEEE International Conference on Control Applications, Vol1 and 2 p.303-308
Abstract
The problem of minimizing emissions of NO. and soot in a diesel engine using fuel injection timings and exhaust gas recirculation (EGR) valve position in a low-pressure EGR system as control variables is addressed. Two feedback variables are computed from in-cylinder pressure sensor data, the crank angle degree of 50 % fuel burnt, and the ignition delay. Empirical maps of NO, and soot according to the feedback variables form the basis of a quadratic cost function in the feedback variables which is minimized by LQG control. For a multi-cylinder engine, the number of control variables will be less than the number of output variables to be controlled, and the consequences of this setup for the LQG controller is addressed. Experimental results... (More)
The problem of minimizing emissions of NO. and soot in a diesel engine using fuel injection timings and exhaust gas recirculation (EGR) valve position in a low-pressure EGR system as control variables is addressed. Two feedback variables are computed from in-cylinder pressure sensor data, the crank angle degree of 50 % fuel burnt, and the ignition delay. Empirical maps of NO, and soot according to the feedback variables form the basis of a quadratic cost function in the feedback variables which is minimized by LQG control. For a multi-cylinder engine, the number of control variables will be less than the number of output variables to be controlled, and the consequences of this setup for the LQG controller is addressed. Experimental results verify the performance of the controller at a fixed operating point of a six-cylinder heavy-duty engine. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
2008 IEEE International Conference on Control Applications, Vol1 and 2
pages
303 - 308
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
conference name
IEEE International Conference on Control Applications, 2008
external identifiers
  • wos:000263577800051
  • scopus:53349128238
ISSN
1085-1992
ISBN
978-1-4244-2222-7
language
English
LU publication?
yes
id
f31afb08-e04b-4b3f-b84e-190d3cafe29a (old id 1375209)
date added to LUP
2009-04-17 09:42:44
date last changed
2017-05-28 04:00:44
@inproceedings{f31afb08-e04b-4b3f-b84e-190d3cafe29a,
  abstract     = {The problem of minimizing emissions of NO. and soot in a diesel engine using fuel injection timings and exhaust gas recirculation (EGR) valve position in a low-pressure EGR system as control variables is addressed. Two feedback variables are computed from in-cylinder pressure sensor data, the crank angle degree of 50 % fuel burnt, and the ignition delay. Empirical maps of NO, and soot according to the feedback variables form the basis of a quadratic cost function in the feedback variables which is minimized by LQG control. For a multi-cylinder engine, the number of control variables will be less than the number of output variables to be controlled, and the consequences of this setup for the LQG controller is addressed. Experimental results verify the performance of the controller at a fixed operating point of a six-cylinder heavy-duty engine.},
  author       = {Henningsson, Maria and Ekholm, Kent and Strandh, Petter and Johansson, Rolf and Tunestål, Per},
  booktitle    = {2008 IEEE International Conference on Control Applications, Vol1 and 2},
  isbn         = {978-1-4244-2222-7},
  issn         = {1085-1992},
  language     = {eng},
  pages        = {303--308},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  title        = {LQG Control for Minimization of Emissions in a Diesel Engine},
  year         = {2008},
}