A Physical Two-Zone NOx Model Intended for Embedded Implementation
(2009) SAE World Congress, 2009- Abstract
- This paper offers a two-zone NOx model suitable for vehicle on-board, on-line implementation. Similar NOx modeling attempts have previously been undertaken. The hereby suggested method does however offer clear and important benefits over the previously methods, utilizing a significantly different method to handle temperature calculations within the (two) different zones avoiding iterative computation. The new method significantly improves calculation speed and, most important of all, reduces implementation complexity while still maintaining reasonable accuracy and the physical interpretation of earlier suggested methods. The equations commonly used to compute NOx emissions is also rewritten in order to suit a two-zone NOx model. An... (More)
- This paper offers a two-zone NOx model suitable for vehicle on-board, on-line implementation. Similar NOx modeling attempts have previously been undertaken. The hereby suggested method does however offer clear and important benefits over the previously methods, utilizing a significantly different method to handle temperature calculations within the (two) different zones avoiding iterative computation. The new method significantly improves calculation speed and, most important of all, reduces implementation complexity while still maintaining reasonable accuracy and the physical interpretation of earlier suggested methods. The equations commonly used to compute NOx emissions is also rewritten in order to suit a two-zone NOx model. An algorithm which can be used to compute NOx emissions is presented and the intended contribution of the paper is a NOx model, implementation feasible for an embedded system, e.g. embedded processor or embedded electronic hardware (FPGA). For that purpose parts of the algorithm can be pre-computed and stored in tables allowing significant acceleration of the computation. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1390855
- author
- Johansson, Bengt
LU
; Wilhelmsson, Carl
LU
; Tunestål, Per
LU
; Johansson, Rolf
LU
and Widd, Anders LU
- organization
- publishing date
- 2009
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- NOx, Embedded system, Model, Engine, FPGA, NO
- host publication
- SAE Technical Papers
- pages
- 11 pages
- publisher
- SAE
- conference name
- SAE World Congress, 2009
- conference location
- Detroit, Michigan, United States
- conference dates
- 2009-04-20 - 2009-04-23
- external identifiers
-
- other:SAE 2009-01-1509
- scopus:85072498849
- DOI
- 10.4271/2009-01-1509
- project
- Competence Centre for Combustion Processes
- language
- English
- LU publication?
- yes
- id
- dde0a311-f5ab-4a93-9c43-236226604228 (old id 1390855)
- date added to LUP
- 2016-04-04 11:06:13
- date last changed
- 2022-03-15 22:48:25
@inproceedings{dde0a311-f5ab-4a93-9c43-236226604228, abstract = {{This paper offers a two-zone NOx model suitable for vehicle on-board, on-line implementation. Similar NOx modeling attempts have previously been undertaken. The hereby suggested method does however offer clear and important benefits over the previously methods, utilizing a significantly different method to handle temperature calculations within the (two) different zones avoiding iterative computation. The new method significantly improves calculation speed and, most important of all, reduces implementation complexity while still maintaining reasonable accuracy and the physical interpretation of earlier suggested methods. The equations commonly used to compute NOx emissions is also rewritten in order to suit a two-zone NOx model. An algorithm which can be used to compute NOx emissions is presented and the intended contribution of the paper is a NOx model, implementation feasible for an embedded system, e.g. embedded processor or embedded electronic hardware (FPGA). For that purpose parts of the algorithm can be pre-computed and stored in tables allowing significant acceleration of the computation.}}, author = {{Johansson, Bengt and Wilhelmsson, Carl and Tunestål, Per and Johansson, Rolf and Widd, Anders}}, booktitle = {{SAE Technical Papers}}, keywords = {{NOx; Embedded system; Model; Engine; FPGA; NO}}, language = {{eng}}, publisher = {{SAE}}, title = {{A Physical Two-Zone NOx Model Intended for Embedded Implementation}}, url = {{https://lup.lub.lu.se/search/files/5695277/1390862.pdf}}, doi = {{10.4271/2009-01-1509}}, year = {{2009}}, }