Control of the Low-Load Region in Partially Premixed Combustion
Ingesson, Gabriel LU ; Yin, Lianhao LU ; Johansson, Rolf LU
and Tunestål, Per
LU
(2016)
Movic & Rasd 2016
744.
- Abstract
- Partially premixed combustion (PPC) is a low temperature, direct-injection combustion concept that has shown to give promising emission levels and efficiencies over a wide operating range. In this concept, high EGR ratios, high octane-number fuels and early injection timings are used to slow down the auto-ignition reactions and to enhance the fuel and are mixing before the start of combustion. A drawback with this concept is the combustion stability in the low-load region where a high octane-number fuel might cause misfire and low combustion efficiency. This paper investigates the problem of low-load PPC controller design for increased engine efficiency. First, low-load PPC data, obtained from a multi-cylinder heavy- duty engine is... (More)
- Partially premixed combustion (PPC) is a low temperature, direct-injection combustion concept that has shown to give promising emission levels and efficiencies over a wide operating range. In this concept, high EGR ratios, high octane-number fuels and early injection timings are used to slow down the auto-ignition reactions and to enhance the fuel and are mixing before the start of combustion. A drawback with this concept is the combustion stability in the low-load region where a high octane-number fuel might cause misfire and low combustion efficiency. This paper investigates the problem of low-load PPC controller design for increased engine efficiency. First, low-load PPC data, obtained from a multi-cylinder heavy- duty engine is presented. The data shows that combustion efficiency could be increased by using a pilot injection and that there is a non-linearity in the relation between injection and combustion timing. Furthermore, intake conditions should be set in order to avoid operating points with unfavourable global equivalence ratio and in-cylinder temperature combinations. Model predictive control simulations were used together with a calibrated engine model to find a gas-system controller that fulfilled this task. The findings are then summarized in a suggested engine controller design. Finally, an experimental performance evaluation of the suggested controller is presented. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/2518999f-4249-4672-84ca-0ff9bfc222dc
- author
- Ingesson, Gabriel
LU
; Yin, Lianhao
LU
; Johansson, Rolf
LU
and Tunestål, Per
LU
- organization
- publishing date
- 2016-10-03
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- Journal of Physics: Conference Series : proceedings of 13th International Conference on Motion and Vibration Control (MOVIC 2016) - proceedings of 13th International Conference on Motion and Vibration Control (MOVIC 2016)
- volume
- 744
- article number
- 012106
- edition
- 1
- pages
- 15 pages
- publisher
- IOP Publishing
- conference name
- Movic & Rasd 2016
- conference location
- Southampton, United Kingdom
- conference dates
- 2016-07-03 - 2016-07-06
- external identifiers
-
- scopus:84994129981
- DOI
- 10.1088/1742-6596/744/1/012106
- project
- Competence Centre for Combustion Processes
- KCFP, Closed-Loop Combustion Control
- language
- English
- LU publication?
- yes
- id
- 2518999f-4249-4672-84ca-0ff9bfc222dc
- date added to LUP
- 2016-10-03 23:25:33
- date last changed
- 2022-08-17 15:07:20
@inproceedings{2518999f-4249-4672-84ca-0ff9bfc222dc,
abstract = {{Partially premixed combustion (PPC) is a low temperature, direct-injection combustion concept that has shown to give promising emission levels and efficiencies over a wide operating range. In this concept, high EGR ratios, high octane-number fuels and early injection timings are used to slow down the auto-ignition reactions and to enhance the fuel and are mixing before the start of combustion. A drawback with this concept is the combustion stability in the low-load region where a high octane-number fuel might cause misfire and low combustion efficiency. This paper investigates the problem of low-load PPC controller design for increased engine efficiency. First, low-load PPC data, obtained from a multi-cylinder heavy- duty engine is presented. The data shows that combustion efficiency could be increased by using a pilot injection and that there is a non-linearity in the relation between injection and combustion timing. Furthermore, intake conditions should be set in order to avoid operating points with unfavourable global equivalence ratio and in-cylinder temperature combinations. Model predictive control simulations were used together with a calibrated engine model to find a gas-system controller that fulfilled this task. The findings are then summarized in a suggested engine controller design. Finally, an experimental performance evaluation of the suggested controller is presented.}},
author = {{Ingesson, Gabriel and Yin, Lianhao and Johansson, Rolf and Tunestål, Per}},
booktitle = {{Journal of Physics: Conference Series : proceedings of 13th International Conference on Motion and Vibration Control (MOVIC 2016)}},
language = {{eng}},
month = {{10}},
publisher = {{IOP Publishing}},
title = {{Control of the Low-Load Region in Partially Premixed Combustion}},
url = {{http://dx.doi.org/10.1088/1742-6596/744/1/012106}},
doi = {{10.1088/1742-6596/744/1/012106}},
volume = {{744}},
year = {{2016}},
}