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Simultaneous Control of Combustion Timing and Ignition Delay in Multi-Cylinder Partially Premixed Combustion

Ingesson, Gabriel LU ; Yin, Lianhao LU ; Johansson, Rolf LU and Tunestål, Per LU (2015) In SAE International Journal of Engines 8(5).
Abstract
In low-temperature combustion concepts such as partially premixed combustion, the ignition delay should be large enough in order to ensure sufficient fuel and air mixing before the start of combustion. It is also necessary that the combustion timing is sufficiently well phased for high thermal efficiency.



Since the ignition delay and combustion timing are intimately coupled, the decoupling of these two quantities gives rise to an interesting multiple input, multiple output control problem where the control of the air system and the fuel injection system have to be combined. In a multi-cylinder engine this problem becomes underdetermined or uncontrollable with more outputs than inputs.



This article... (More)
In low-temperature combustion concepts such as partially premixed combustion, the ignition delay should be large enough in order to ensure sufficient fuel and air mixing before the start of combustion. It is also necessary that the combustion timing is sufficiently well phased for high thermal efficiency.



Since the ignition delay and combustion timing are intimately coupled, the decoupling of these two quantities gives rise to an interesting multiple input, multiple output control problem where the control of the air system and the fuel injection system have to be combined. In a multi-cylinder engine this problem becomes underdetermined or uncontrollable with more outputs than inputs.



This article investigates model-based cycle-to-cycle cylinder-individual closed-loop control of the ignition delay and the combustion phasing in a multi-cylinder heavy-duty DI engine running on a gasoline fuel mixture. The controller design of choice was model predictive control (MPC) which is a suitable design for multiple input/output systems with actuator constraints. Ignition delay and combustion phasing were extracted from cooled in-cylinder pressure sensors and controlled by manipulating injection timings, the gas mixture temperature and exhaust-gas recirculation (EGR) ratio using a dual EGR-path system and a fast thermal-management (FTM) system. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
SAE International Journal of Engines
volume
8
issue
5
publisher
SAE
external identifiers
  • scopus:84945156604
ISSN
1946-3944
DOI
10.4271/2015-24-2424
project
Competence Centre for Combustion Processes
language
English
LU publication?
yes
id
02a8f4ea-d069-43ec-ab6b-73d1acfeba66 (old id 7990775)
alternative location
http://papers.sae.org/2015-24-2424/
date added to LUP
2015-09-25 09:43:13
date last changed
2017-08-20 03:06:20
@article{02a8f4ea-d069-43ec-ab6b-73d1acfeba66,
  abstract     = {In low-temperature combustion concepts such as partially premixed combustion, the ignition delay should be large enough in order to ensure sufficient fuel and air mixing before the start of combustion. It is also necessary that the combustion timing is sufficiently well phased for high thermal efficiency.<br/><br>
<br/><br>
Since the ignition delay and combustion timing are intimately coupled, the decoupling of these two quantities gives rise to an interesting multiple input, multiple output control problem where the control of the air system and the fuel injection system have to be combined. In a multi-cylinder engine this problem becomes underdetermined or uncontrollable with more outputs than inputs.<br/><br>
<br/><br>
This article investigates model-based cycle-to-cycle cylinder-individual closed-loop control of the ignition delay and the combustion phasing in a multi-cylinder heavy-duty DI engine running on a gasoline fuel mixture. The controller design of choice was model predictive control (MPC) which is a suitable design for multiple input/output systems with actuator constraints. Ignition delay and combustion phasing were extracted from cooled in-cylinder pressure sensors and controlled by manipulating injection timings, the gas mixture temperature and exhaust-gas recirculation (EGR) ratio using a dual EGR-path system and a fast thermal-management (FTM) system.},
  author       = {Ingesson, Gabriel and Yin, Lianhao and Johansson, Rolf and Tunestål, Per},
  issn         = {1946-3944},
  language     = {eng},
  number       = {5},
  publisher    = {SAE},
  series       = {SAE International Journal of Engines},
  title        = {Simultaneous Control of Combustion Timing and Ignition Delay in Multi-Cylinder Partially Premixed Combustion},
  url          = {http://dx.doi.org/10.4271/2015-24-2424},
  volume       = {8},
  year         = {2015},
}