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A Predictive Real Time NOx Model for Conventional and Partially Premixed Diesel Combustion

Andersson, Magnus LU ; Johansson, Bengt LU ; Hultqvist, Anders LU and Nöhre, Christof (2006) In SAE Technical Paper Series 115.
Abstract
A previously presented robust and fast diagnostic NOx model was modified into a predictive model. This was done by using simple yet physically based models for fuel injection, ignition delay, premixed heat release rate and diffusion combustion heat release rate.



The model can be used both for traditional high-temperature combustion and for high-EGR, low-temperature combustion.



It was possible to maintain a high accuracy and calculation speed of the NOx model itself. The root mean square of the relative model error is 16% and the calculation speed is around one second on a PC. Combustion characteristics such as ignition delay, CA50 and the general shape of the heat release rate are well predicted by... (More)
A previously presented robust and fast diagnostic NOx model was modified into a predictive model. This was done by using simple yet physically based models for fuel injection, ignition delay, premixed heat release rate and diffusion combustion heat release rate.



The model can be used both for traditional high-temperature combustion and for high-EGR, low-temperature combustion.



It was possible to maintain a high accuracy and calculation speed of the NOx model itself. The root mean square of the relative model error is 16% and the calculation speed is around one second on a PC. Combustion characteristics such as ignition delay, CA50 and the general shape of the heat release rate are well predicted by the combustion model.



The model is aimed at real-time NOx calculation and optimization in a vehicle on the road. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Diesel, Low Temperature Combustion, NOx model, Partially Premixed Combustion
in
SAE Technical Paper Series
volume
115
publisher
Society of Automotive Engineers
external identifiers
  • scopus:84877226287
ISSN
0148-7191
language
English
LU publication?
yes
id
4404dbbd-af38-4de4-adfd-5c48656a664d (old id 166093)
alternative location
http://www.sae.org/technical/papers/2006-01-3329
date added to LUP
2007-06-27 09:41:19
date last changed
2018-05-20 03:57:44
@article{4404dbbd-af38-4de4-adfd-5c48656a664d,
  abstract     = {A previously presented robust and fast diagnostic NOx model was modified into a predictive model. This was done by using simple yet physically based models for fuel injection, ignition delay, premixed heat release rate and diffusion combustion heat release rate. <br/><br>
<br/><br>
The model can be used both for traditional high-temperature combustion and for high-EGR, low-temperature combustion. <br/><br>
<br/><br>
It was possible to maintain a high accuracy and calculation speed of the NOx model itself. The root mean square of the relative model error is 16% and the calculation speed is around one second on a PC. Combustion characteristics such as ignition delay, CA50 and the general shape of the heat release rate are well predicted by the combustion model. <br/><br>
<br/><br>
The model is aimed at real-time NOx calculation and optimization in a vehicle on the road.},
  author       = {Andersson, Magnus and Johansson, Bengt and Hultqvist, Anders and Nöhre, Christof},
  issn         = {0148-7191},
  keyword      = {Diesel,Low Temperature Combustion,NOx model,Partially Premixed Combustion},
  language     = {eng},
  publisher    = {Society of Automotive Engineers},
  series       = {SAE Technical Paper Series},
  title        = {A Predictive Real Time NOx Model for Conventional and Partially Premixed Diesel Combustion},
  volume       = {115},
  year         = {2006},
}