Applicability of Ionization Current Sensing Technique with Plasma Jet Ignition Using PreChamber Spark Plug in a Heavy Duty Natural Gas Engine
(2012) SAE 2012 International Powertrains, Fuels & Lubricants Meeting In SAE Technical Paper Series- Abstract
- This article deals with study of ionization current sensing
technique's signal characteristics while operating with pre-chamber spark plug to achieve plasma jet ignition in a 6
cylinder 9 liter turbo-charged natural gas engine under EGR
and excess air dilution. Unlike the signal with conventional
spark plug which can be divided into distinct chemical and
thermal ionization peaks, the signal with pre-chamber spark
plug shows a much larger first peak and a negligible second
peak thereafter. Many studies in past have found the time of
second peak coinciding with the time of maximum cylinder
pressure and this correlation has been used as an input to
... (More) - This article deals with study of ionization current sensing
technique's signal characteristics while operating with pre-chamber spark plug to achieve plasma jet ignition in a 6
cylinder 9 liter turbo-charged natural gas engine under EGR
and excess air dilution. Unlike the signal with conventional
spark plug which can be divided into distinct chemical and
thermal ionization peaks, the signal with pre-chamber spark
plug shows a much larger first peak and a negligible second
peak thereafter. Many studies in past have found the time of
second peak coinciding with the time of maximum cylinder
pressure and this correlation has been used as an input to
combustion control systems but the absence of second peak
makes application of this concept difficult with pre-chamber
spark plug. However, it has been observed that the first peak
is very strong and does not deteriorate much even under lean
operation and hence ion current signal integral can be used to
calculate real time combustion stability parameters for
combustion control systems. The correlation between the
coefficient of variation (COV) of indicated mean effective
pressure (IMEP) and ion current integral for operation at 5,
12 and 18 bar IMEP load under stoichiometric and diluted
operation with EGR and excess air is presented in this article. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4353331
- author
- Shah, Ashish LU ; Tunestål, Per LU and Johansson, Bengt LU
- organization
- publishing date
- 2012
- type
- Chapter in Book/Report/Conference proceeding
- publication status
- published
- subject
- keywords
- Internal Combustion Engine, Natural Gas, Pre-chamber, Ignition
- host publication
- SAE Technical Paper
- series title
- SAE Technical Paper Series
- pages
- 11 pages
- publisher
- Society of Automotive Engineers
- conference name
- SAE 2012 International Powertrains, Fuels & Lubricants Meeting
- conference location
- Malmo, Sweden
- conference dates
- 2012-09-18 - 2012-09-20
- external identifiers
-
- other:2012-01-1632
- scopus:84881197711
- ISSN
- 0148-7191
- DOI
- 10.4271/2012-01-1632
- project
- Competence Centre for Combustion Processes
- language
- English
- LU publication?
- yes
- id
- 0cb012fd-dac7-43c2-b1da-17fc620b8a6a (old id 4353331)
- alternative location
- http://papers.sae.org/2012-01-1632/
- date added to LUP
- 2016-04-04 11:42:03
- date last changed
- 2022-01-29 22:20:16
@inproceedings{0cb012fd-dac7-43c2-b1da-17fc620b8a6a,
abstract = {{This article deals with study of ionization current sensing<br/><br>
technique's signal characteristics while operating with pre-chamber spark plug to achieve plasma jet ignition in a 6<br/><br>
cylinder 9 liter turbo-charged natural gas engine under EGR<br/><br>
and excess air dilution. Unlike the signal with conventional<br/><br>
spark plug which can be divided into distinct chemical and<br/><br>
thermal ionization peaks, the signal with pre-chamber spark<br/><br>
plug shows a much larger first peak and a negligible second<br/><br>
peak thereafter. Many studies in past have found the time of<br/><br>
second peak coinciding with the time of maximum cylinder<br/><br>
pressure and this correlation has been used as an input to<br/><br>
combustion control systems but the absence of second peak<br/><br>
makes application of this concept difficult with pre-chamber<br/><br>
spark plug. However, it has been observed that the first peak<br/><br>
is very strong and does not deteriorate much even under lean<br/><br>
operation and hence ion current signal integral can be used to<br/><br>
calculate real time combustion stability parameters for<br/><br>
combustion control systems. The correlation between the<br/><br>
coefficient of variation (COV) of indicated mean effective<br/><br>
pressure (IMEP) and ion current integral for operation at 5,<br/><br>
12 and 18 bar IMEP load under stoichiometric and diluted<br/><br>
operation with EGR and excess air is presented in this article.}},
author = {{Shah, Ashish and Tunestål, Per and Johansson, Bengt}},
booktitle = {{SAE Technical Paper}},
issn = {{0148-7191}},
keywords = {{Internal Combustion Engine; Natural Gas; Pre-chamber; Ignition}},
language = {{eng}},
publisher = {{Society of Automotive Engineers}},
series = {{SAE Technical Paper Series}},
title = {{Applicability of Ionization Current Sensing Technique with Plasma Jet Ignition Using PreChamber Spark Plug in a Heavy Duty Natural Gas Engine}},
url = {{http://dx.doi.org/10.4271/2012-01-1632}},
doi = {{10.4271/2012-01-1632}},
year = {{2012}},
}