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Evaluation of the operating range of partially premixed combustion in a multi cylinder heavy duty engine with extensive EGR

Lewander, Magnus LU ; Johansson, Bengt LU ; Tunestal, Per LU ; Keeler, Nathan; Tullis, Simon; Milovanovic, Nebojsa and Bergstrand, Pär (2009) SAE 2003 World Congress and Exhibition In SAE Technical Papers
Abstract

Partially Premixed Combustion (PPC) is a combustion concept by which it is possible to get low smoke and NOx emissions simultaneously. PPC requires high EGR levels and injection timings sufficiently early or late to extend the ignition delay so that air and fuel mix extensively prior to combustion. This paper investigates the operating region of single injection diesel PPC in a multi cylinder heavy duty engine resembling a standard build production engine. Limits in emissions and fuel consumption are defined and the highest load that fulfills these requirements is determined. Experiments are carried out at different engine speeds and a comparison of open and closed loop combustion control are made as well as evaluation of an extended... (More)

Partially Premixed Combustion (PPC) is a combustion concept by which it is possible to get low smoke and NOx emissions simultaneously. PPC requires high EGR levels and injection timings sufficiently early or late to extend the ignition delay so that air and fuel mix extensively prior to combustion. This paper investigates the operating region of single injection diesel PPC in a multi cylinder heavy duty engine resembling a standard build production engine. Limits in emissions and fuel consumption are defined and the highest load that fulfills these requirements is determined. Experiments are carried out at different engine speeds and a comparison of open and closed loop combustion control are made as well as evaluation of an extended EGR-cooling system designed to reduce the EGR temperature. In this study the PPC operating range proved to be limited. The highest loads that fulfilled the emission criteria correspond to 30% of maximum load for conventional combustion at low speed and 21% of maximum load for conventional combustion at high speed. The effect of changes in combustion control was small while a reduced EGR temperature could increase the operating range significantly.

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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
SAE Technical Papers
pages
11 pages
conference name
SAE 2003 World Congress and Exhibition
external identifiers
  • scopus:79959855136
DOI
10.4271/2009-01-1127
language
English
LU publication?
yes
id
79ef49ca-0e22-4a51-9d1e-4c6cede3a5fa
date added to LUP
2017-12-14 17:34:11
date last changed
2018-07-08 04:28:56
@inproceedings{79ef49ca-0e22-4a51-9d1e-4c6cede3a5fa,
  abstract     = {<p>Partially Premixed Combustion (PPC) is a combustion concept by which it is possible to get low smoke and NOx emissions simultaneously. PPC requires high EGR levels and injection timings sufficiently early or late to extend the ignition delay so that air and fuel mix extensively prior to combustion. This paper investigates the operating region of single injection diesel PPC in a multi cylinder heavy duty engine resembling a standard build production engine. Limits in emissions and fuel consumption are defined and the highest load that fulfills these requirements is determined. Experiments are carried out at different engine speeds and a comparison of open and closed loop combustion control are made as well as evaluation of an extended EGR-cooling system designed to reduce the EGR temperature. In this study the PPC operating range proved to be limited. The highest loads that fulfilled the emission criteria correspond to 30% of maximum load for conventional combustion at low speed and 21% of maximum load for conventional combustion at high speed. The effect of changes in combustion control was small while a reduced EGR temperature could increase the operating range significantly.</p>},
  author       = {Lewander, Magnus and Johansson, Bengt and Tunestal, Per and Keeler, Nathan and Tullis, Simon and Milovanovic, Nebojsa and Bergstrand, Pär},
  booktitle    = {SAE Technical Papers},
  language     = {eng},
  pages        = {11},
  title        = {Evaluation of the operating range of partially premixed combustion in a multi cylinder heavy duty engine with extensive EGR},
  url          = {http://dx.doi.org/10.4271/2009-01-1127},
  year         = {2009},
}