Scalability Aspects of Pre-Chamber Ignition in Heavy Duty Natural Gas Engines
(2016) SAE 2016 World Congress and Exhibition, 2016- Abstract
This article presents a study related to application of pre-chamber ignition system in heavy duty natural gas engine which, as previously shown by the authors, can extend the limit of fuel-lean combustion and hence improve fuel efficiency and reduce emissions. A previous study about the effect of pre-chamber volume and nozzle diameter on a single cylinder 2 liter truck-size engine resulted in recommendations for optimal pre-chamber geometry settings. The current study is to determine the dependency of those settings on the engine size. For this study, experiments are performed on a single cylinder 9 liter large bore marine engine with similar pre-chamber geometry and a test matrix of similar and scaled pre-chamber volume and nozzle... (More)
This article presents a study related to application of pre-chamber ignition system in heavy duty natural gas engine which, as previously shown by the authors, can extend the limit of fuel-lean combustion and hence improve fuel efficiency and reduce emissions. A previous study about the effect of pre-chamber volume and nozzle diameter on a single cylinder 2 liter truck-size engine resulted in recommendations for optimal pre-chamber geometry settings. The current study is to determine the dependency of those settings on the engine size. For this study, experiments are performed on a single cylinder 9 liter large bore marine engine with similar pre-chamber geometry and a test matrix of similar and scaled pre-chamber volume and nozzle diameter settings. The effect of these variations on main chamber ignition and the following combustion is studied to understand the scalability aspects of pre-chamber ignition. Indicated efficiency and engine-out emission data is also presented. It has been found that the performance of a pre-chamber is strongly affected by the size of the engine is it being used in. Even with the same energy content in the pre-chamber at the time of spark, the resulting initial main chamber heat release has been found to scale with engine size, and hence the optimal settings for pre-chamber volume and nozzle diameter are also found to scale with engine size.
(Less)
- author
- Shah, Ashish LU ; Tunestål, Per LU and Johansson, Bengt LU
- organization
- publishing date
- 2016
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- host publication
- SAE Technical Papers
- article number
- 2016-01-0796
- publisher
- Society of Automotive Engineers
- conference name
- SAE 2016 World Congress and Exhibition, 2016
- conference location
- Detroit, United States
- conference dates
- 2016-04-12 - 2016-04-14
- external identifiers
-
- scopus:85072364050
- DOI
- 10.4271/2016-01-0796
- project
- Competence Centre for Combustion Processes
- language
- English
- LU publication?
- yes
- id
- cd6b94ff-5af4-46e3-8cbc-54661a25bfd2
- date added to LUP
- 2017-02-16 13:50:22
- date last changed
- 2022-02-07 02:59:22
@inproceedings{cd6b94ff-5af4-46e3-8cbc-54661a25bfd2,
abstract = {{<p>This article presents a study related to application of pre-chamber ignition system in heavy duty natural gas engine which, as previously shown by the authors, can extend the limit of fuel-lean combustion and hence improve fuel efficiency and reduce emissions. A previous study about the effect of pre-chamber volume and nozzle diameter on a single cylinder 2 liter truck-size engine resulted in recommendations for optimal pre-chamber geometry settings. The current study is to determine the dependency of those settings on the engine size. For this study, experiments are performed on a single cylinder 9 liter large bore marine engine with similar pre-chamber geometry and a test matrix of similar and scaled pre-chamber volume and nozzle diameter settings. The effect of these variations on main chamber ignition and the following combustion is studied to understand the scalability aspects of pre-chamber ignition. Indicated efficiency and engine-out emission data is also presented. It has been found that the performance of a pre-chamber is strongly affected by the size of the engine is it being used in. Even with the same energy content in the pre-chamber at the time of spark, the resulting initial main chamber heat release has been found to scale with engine size, and hence the optimal settings for pre-chamber volume and nozzle diameter are also found to scale with engine size.</p>}},
author = {{Shah, Ashish and Tunestål, Per and Johansson, Bengt}},
booktitle = {{SAE Technical Papers}},
language = {{eng}},
publisher = {{Society of Automotive Engineers}},
title = {{Scalability Aspects of Pre-Chamber Ignition in Heavy Duty Natural Gas Engines}},
url = {{http://dx.doi.org/10.4271/2016-01-0796}},
doi = {{10.4271/2016-01-0796}},
year = {{2016}},
}