Effect of Relative Mixture Strength on Performance of Divided Chamber 'Avalanche Activated Combustion' Ignition Technique in a Heavy Duty Natural Gas Engine
(2014) SAE 2014 World Congress & Exhibition- Abstract
- This article deals with application of a pre-chamber type ignition device in a heavy duty engine operated with natural gas. A particular pre-chamber ignition strategy called Avalanche Activated Combustion (originally ’Lavinia Aktyvatsia Gorenia’ in Russian), commonly referred to as LAG-ignition process, has been studied by performing a parametric study of various pre- and main chamber mixture strength combinations. This strategy was first proposed in 1966 and has been mostly applied in light duty automotive engines. A majority of published data are results from developmental studies but the fundamental mechanism of the LAG-ignition process is unclear to date. To the best of authors’ knowledge, the study presented in this article is the... (More)
- This article deals with application of a pre-chamber type ignition device in a heavy duty engine operated with natural gas. A particular pre-chamber ignition strategy called Avalanche Activated Combustion (originally ’Lavinia Aktyvatsia Gorenia’ in Russian), commonly referred to as LAG-ignition process, has been studied by performing a parametric study of various pre- and main chamber mixture strength combinations. This strategy was first proposed in 1966 and has been mostly applied in light duty automotive engines. A majority of published data are results from developmental studies but the fundamental mechanism of the LAG-ignition process is unclear to date. To the best of authors’ knowledge, the study presented in this article is the first generalized study to gain deeper understanding of the LAG-ignition process in heavy duty engines operating with natural gas as fuel for both chambers. The experiments are performed on a single cylinder 2.1 L engine fitted with a custom made pre-chamber capable of spark ignition, fuel injection and pressure measurement. Measured cylinder pressure is used to perform heat release analysis to understand combustion in the pre-chamber and subsequent ignition and combustion of fuel-lean charge in the main chamber. Results show substantial extension in lean limit of operation and corresponding improvement in indicated efficiency by burning fuel rich in the pre-chamber. Data related to engine-out regulated emission species are also presented. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4353357
- author
- Shah, Ashish LU ; Tunestål, Per LU and Johansson, Bengt LU
- organization
- publishing date
- 2014
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Pre-chamber, Natural Gas, Internal Combustion Engines, LAG
- host publication
- Proceedings of the SAE World Congress 2014
- pages
- 11 pages
- publisher
- Society of Automotive Engineers
- conference name
- SAE 2014 World Congress & Exhibition
- conference location
- Detroit, Michigan, United States
- conference dates
- 2014-04-08
- external identifiers
-
- other:2014-01-1327
- scopus:84899551536
- DOI
- 10.4271/2014-01-1327
- project
- Competence Centre for Combustion Processes
- language
- English
- LU publication?
- yes
- id
- a26030b7-1be5-47b8-a776-7feef9f8f89c (old id 4353357)
- alternative location
- http://papers.sae.org/2014-01-1327/
- date added to LUP
- 2016-04-04 12:10:13
- date last changed
- 2022-03-31 19:35:30
@inproceedings{a26030b7-1be5-47b8-a776-7feef9f8f89c,
abstract = {{This article deals with application of a pre-chamber type ignition device in a heavy duty engine operated with natural gas. A particular pre-chamber ignition strategy called Avalanche Activated Combustion (originally ’Lavinia Aktyvatsia Gorenia’ in Russian), commonly referred to as LAG-ignition process, has been studied by performing a parametric study of various pre- and main chamber mixture strength combinations. This strategy was first proposed in 1966 and has been mostly applied in light duty automotive engines. A majority of published data are results from developmental studies but the fundamental mechanism of the LAG-ignition process is unclear to date. To the best of authors’ knowledge, the study presented in this article is the first generalized study to gain deeper understanding of the LAG-ignition process in heavy duty engines operating with natural gas as fuel for both chambers. The experiments are performed on a single cylinder 2.1 L engine fitted with a custom made pre-chamber capable of spark ignition, fuel injection and pressure measurement. Measured cylinder pressure is used to perform heat release analysis to understand combustion in the pre-chamber and subsequent ignition and combustion of fuel-lean charge in the main chamber. Results show substantial extension in lean limit of operation and corresponding improvement in indicated efficiency by burning fuel rich in the pre-chamber. Data related to engine-out regulated emission species are also presented.}},
author = {{Shah, Ashish and Tunestål, Per and Johansson, Bengt}},
booktitle = {{Proceedings of the SAE World Congress 2014}},
keywords = {{Pre-chamber; Natural Gas; Internal Combustion Engines; LAG}},
language = {{eng}},
publisher = {{Society of Automotive Engineers}},
title = {{Effect of Relative Mixture Strength on Performance of Divided Chamber 'Avalanche Activated Combustion' Ignition Technique in a Heavy Duty Natural Gas Engine}},
url = {{http://dx.doi.org/10.4271/2014-01-1327}},
doi = {{10.4271/2014-01-1327}},
year = {{2014}},
}