Cylinder Individual Efficiency Estimation for Online Fuel Consumption Optimization
(2010) Fall Technical Conference of the ASME Internal Combustion Engine Division, 2010 p.627-634- Abstract
- Engine efficiency is often controlled in an indirect way through combustion timing control. This requires a priori knowledge of where to phase the combustion jiff different operating points and conditions. With cylinder individual efficiency estimation, control strategies aiming directly at fuel consumption optimization can be developed. This paper presents a method to estimate indicated efficiency using the cylinder pressure trace as input. The proposed method is based on a heat release calculation that takes heat losses into account implicitly using an estimated, CAD resolved polytropic exponent. Experimental results from a multi-cylinder engine show that with this approach, the estimated efficiency error is within 5% for all operating... (More)
- Engine efficiency is often controlled in an indirect way through combustion timing control. This requires a priori knowledge of where to phase the combustion jiff different operating points and conditions. With cylinder individual efficiency estimation, control strategies aiming directly at fuel consumption optimization can be developed. This paper presents a method to estimate indicated efficiency using the cylinder pressure trace as input. The proposed method is based on a heat release calculation that takes heat losses into account implicitly using an estimated, CAD resolved polytropic exponent. Experimental results from a multi-cylinder engine show that with this approach, the estimated efficiency error is within 5% for all operating points tested. The final part of the paper is a discussion of how to use the efficiency estimation for feedback control. Different control concepts are presented as well as suggestions on how to handle the non-linear connection between combustion timing and indicated efficiency. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/1984608
- author
- Lewander, Magnus LU ; Tunestål, Per LU and Johansson, Bengt LU
- organization
- publishing date
- 2010
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- Proceedings Of The ASME Internal Combustion Engine Division Fall Technical Conference
- pages
- 627 - 634
- publisher
- American Society Of Mechanical Engineers (ASME)
- conference name
- Fall Technical Conference of the ASME Internal Combustion Engine Division, 2010
- conference location
- San Antonio, TX, United States
- conference dates
- 2010-09-12 - 2010-09-15
- external identifiers
-
- wos:000290505600061
- scopus:80054789756
- ISBN
- 978-0-7918-4944-6
- DOI
- 10.1115/ICEF2010-35113
- language
- English
- LU publication?
- yes
- id
- 4a98b980-0b61-4767-b223-32100f916409 (old id 1984608)
- date added to LUP
- 2016-04-04 11:26:22
- date last changed
- 2022-01-29 21:53:15
@inproceedings{4a98b980-0b61-4767-b223-32100f916409, abstract = {{Engine efficiency is often controlled in an indirect way through combustion timing control. This requires a priori knowledge of where to phase the combustion jiff different operating points and conditions. With cylinder individual efficiency estimation, control strategies aiming directly at fuel consumption optimization can be developed. This paper presents a method to estimate indicated efficiency using the cylinder pressure trace as input. The proposed method is based on a heat release calculation that takes heat losses into account implicitly using an estimated, CAD resolved polytropic exponent. Experimental results from a multi-cylinder engine show that with this approach, the estimated efficiency error is within 5% for all operating points tested. The final part of the paper is a discussion of how to use the efficiency estimation for feedback control. Different control concepts are presented as well as suggestions on how to handle the non-linear connection between combustion timing and indicated efficiency.}}, author = {{Lewander, Magnus and Tunestål, Per and Johansson, Bengt}}, booktitle = {{Proceedings Of The ASME Internal Combustion Engine Division Fall Technical Conference}}, isbn = {{978-0-7918-4944-6}}, language = {{eng}}, pages = {{627--634}}, publisher = {{American Society Of Mechanical Engineers (ASME)}}, title = {{Cylinder Individual Efficiency Estimation for Online Fuel Consumption Optimization}}, url = {{http://dx.doi.org/10.1115/ICEF2010-35113}}, doi = {{10.1115/ICEF2010-35113}}, year = {{2010}}, }