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Closed-Loop Combustion Control of HCCI Engines

Tunestål, Per LU ; Olsson, Jan-Ola LU and Johansson, Bengt LU (2003) In Nonlinear and Hybrid Systems in Automotive Control p.321-334
Abstract
The HCCI engine, with its excellent potential for high efficiency and low NOx emissions, is investigated from a control perspective. Combustion timing, i.e., where in the thermodynamic cycle combustion takes place, is identified

as the most challenging problem with HCCI engine control. A number of different means for controlling combustion timing are suggested, and results using a dual-fuel solution are presented. This solution uses two fuels with different ignition characteristics to control the time of autoignition. Cylinder pressure measurement is suggested for feedback of combustion timing. A simple net-heat

release algorithm is applied to the measurements, and the crank angle of 50% burnt is extracted. Open-loop... (More)
The HCCI engine, with its excellent potential for high efficiency and low NOx emissions, is investigated from a control perspective. Combustion timing, i.e., where in the thermodynamic cycle combustion takes place, is identified

as the most challenging problem with HCCI engine control. A number of different means for controlling combustion timing are suggested, and results using a dual-fuel solution are presented. This solution uses two fuels with different ignition characteristics to control the time of autoignition. Cylinder pressure measurement is suggested for feedback of combustion timing. A simple net-heat

release algorithm is applied to the measurements, and the crank angle of 50% burnt is extracted. Open-loop instability is detected in some high-load regions of the operating range. This phenomenon is explained by positive feedback between the cylinder wall heating and ignition

timing processes. Closed-loop performance is hampered by time delays and model uncertainties. This problem is particularly pronounced at operating points that are open-loop unstable. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
HCCI, Combustion, Engine, Control
in
Nonlinear and Hybrid Systems in Automotive Control
editor
Johansson, Rolf and Rantzer, Anders
pages
321 - 334
publisher
Springer
external identifiers
  • WOS:000179875900014
language
English
LU publication?
yes
id
94cc6764-36b7-4479-a370-fd553a9d0793 (old id 538305)
date added to LUP
2007-09-26 15:23:59
date last changed
2016-04-16 09:54:24
@misc{94cc6764-36b7-4479-a370-fd553a9d0793,
  abstract     = {The HCCI engine, with its excellent potential for high efficiency and low NOx emissions, is investigated from a control perspective. Combustion timing, i.e., where in the thermodynamic cycle combustion takes place, is identified<br/><br>
as the most challenging problem with HCCI engine control. A number of different means for controlling combustion timing are suggested, and results using a dual-fuel solution are presented. This solution uses two fuels with different ignition characteristics to control the time of autoignition. Cylinder pressure measurement is suggested for feedback of combustion timing. A simple net-heat<br/><br>
release algorithm is applied to the measurements, and the crank angle of 50% burnt is extracted. Open-loop instability is detected in some high-load regions of the operating range. This phenomenon is explained by positive feedback between the cylinder wall heating and ignition<br/><br>
timing processes. Closed-loop performance is hampered by time delays and model uncertainties. This problem is particularly pronounced at operating points that are open-loop unstable.},
  author       = {Tunestål, Per and Olsson, Jan-Ola and Johansson, Bengt},
  editor       = {Johansson, Rolf and Rantzer, Anders},
  keyword      = {HCCI,Combustion,Engine,Control},
  language     = {eng},
  pages        = {321--334},
  publisher    = {ARRAY(0x8933ea8)},
  series       = {Nonlinear and Hybrid Systems in Automotive Control},
  title        = {Closed-Loop Combustion Control of HCCI Engines},
  year         = {2003},
}