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Transient Control of Combustion Phasing and Lambda in a 6-Cylinder Port-Injected Natural-gas Engine

Kaiadi, Mehrzad LU and Tunestål, Per LU (2009) Internal Combustion Engine Division 2009 Spring Technical Conference In Proceedings of the Internal Combustion Engine Division 2009 Spring Technical Conference p.655-662
Abstract
Fuel economy and emissions are the two central parameters in heavy duty engines. High EGR rates combined with turbocharging has been identified as a promising way to increase the maximum load and efficiency of heavy duty spark ignition engines. With stoichiometric conditions a three way catalyst can be used which keeps the regulated emissions at very low levels. The Lambda window which results in very low emissions is very narrow. This issue is more complex with transient operation resulting in losing brake efficiency and also catalyst converting efficiency.



This paper presents different control strategies to maximize the reliability for maintaining efficiency and emissions levels under transient conditions.... (More)
Fuel economy and emissions are the two central parameters in heavy duty engines. High EGR rates combined with turbocharging has been identified as a promising way to increase the maximum load and efficiency of heavy duty spark ignition engines. With stoichiometric conditions a three way catalyst can be used which keeps the regulated emissions at very low levels. The Lambda window which results in very low emissions is very narrow. This issue is more complex with transient operation resulting in losing brake efficiency and also catalyst converting efficiency.



This paper presents different control strategies to maximize the reliability for maintaining efficiency and emissions levels under transient conditions. Different

controllers are developed and tested successfully on a heavy duty 6-cylinder port injected natural gas engine. Model Predictive Control (MPC) was used to control lambda which was modeled using System Identification. Furthermore, a Proportional Integral (PI) regulator combined with a feedforward map for obtaining Maximum Brake Torque (MBT) timing was applied. The results show that excellent steady-state and transient performance can be achieved. (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
Internal Combustion Engine, Natural Gas, Control, Transient
in
Proceedings of the Internal Combustion Engine Division 2009 Spring Technical Conference
pages
8 pages
publisher
American Society Of Mechanical Engineers (ASME)
conference name
Internal Combustion Engine Division 2009 Spring Technical Conference
external identifiers
  • WOS:000273471300063
  • Scopus:77952837652
ISBN
978-0-7918-4340-6
DOI
10.1115/ICES2009-76004
language
English
LU publication?
yes
id
eb48b36c-3a92-4c9c-bf0d-b32d13ddbcda (old id 1396342)
alternative location
http://proceedings.asmedigitalcollection.asme.org/proceeding.aspx?articleid=1622426
date added to LUP
2009-05-13 11:19:07
date last changed
2017-01-01 08:08:36
@inproceedings{eb48b36c-3a92-4c9c-bf0d-b32d13ddbcda,
  abstract     = {Fuel economy and emissions are the two central parameters in heavy duty engines. High EGR rates combined with turbocharging has been identified as a promising way to increase the maximum load and efficiency of heavy duty spark ignition engines. With stoichiometric conditions a three way catalyst can be used which keeps the regulated emissions at very low levels. The Lambda window which results in very low emissions is very narrow. This issue is more complex with transient operation resulting in losing brake efficiency and also catalyst converting efficiency.<br/><br>
<br/><br>
This paper presents different control strategies to maximize the reliability for maintaining efficiency and emissions levels under transient conditions. Different<br/><br>
controllers are developed and tested successfully on a heavy duty 6-cylinder port injected natural gas engine. Model Predictive Control (MPC) was used to control lambda which was modeled using System Identification. Furthermore, a Proportional Integral (PI) regulator combined with a feedforward map for obtaining Maximum Brake Torque (MBT) timing was applied. The results show that excellent steady-state and transient performance can be achieved.},
  author       = {Kaiadi, Mehrzad and Tunestål, Per},
  booktitle    = {Proceedings of the Internal Combustion Engine Division 2009 Spring Technical Conference},
  isbn         = {978-0-7918-4340-6},
  keyword      = {Internal Combustion Engine,Natural Gas,Control,Transient},
  language     = {eng},
  pages        = {655--662},
  publisher    = {American Society Of Mechanical Engineers (ASME)},
  title        = {Transient Control of Combustion Phasing and Lambda in a 6-Cylinder Port-Injected Natural-gas Engine},
  url          = {http://dx.doi.org/10.1115/ICES2009-76004},
  year         = {2009},
}