Advanced

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 In Proceedings of the SAE World Congress 2014
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
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Pre-chamber, Natural Gas, Internal Combustion Engines, LAG
in
Proceedings of the SAE World Congress 2014
pages
11 pages
publisher
Society of Automotive Engineers
conference name
SAE 2014 World Congress & Exhibition
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
2014-03-10 10:54:49
date last changed
2016-10-13 04:49:59
@misc{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},
  keyword      = {Pre-chamber,Natural Gas,Internal Combustion Engines,LAG},
  language     = {eng},
  pages        = {11},
  publisher    = {ARRAY(0x8c6d8e0)},
  series       = {Proceedings of the SAE World Congress 2014},
  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},
  year         = {2014},
}