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Effect of Relative Mixture Strength on Performance of Divided Chamber 'Avalanche Activated Combustion' Ignition Technique in a Heavy Duty Natural Gas Engine

Shah, Ashish LU ; Tunestål, Per LU and Johansson, Bengt LU (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:
author
; and
organization
publishing date
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}},
}