Impact of A/F Ratio on Ion Current Features Using Spark Plug with Negative Polarity

Event
SAE World Congress & Exhibition
Authors Abstract
Content
The increasing interest and requirement for improved electronic engine control during the last few decades, has led to the implementation of several different sensor technologies. The process of utilizing the spark plug as a combustion probe to monitor the different combustion related parameters such as knock, misfire, Ignition timing, and air-fuel ratio have been the subject of research for some time now.
The air-fuel ratio is one of the most important engine operating parameters that has an impact on the combustion process, engine-out emissions, fuel economy, indicated mean effective pressure and exhaust gas composition and temperature. Furthermore, air-fuel ratio affects the ion produced during flame kernel initiation and post flame propagation. In this paper, an investigation is made to determine the effect of air-fuel ratio on ion current, using gasoline and methane under different spark plug designs and engine operating conditions. The ion current is produced by using a negative bias and proved to contain enough information about the air-fuel ratio.
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DOI
https://doi.org/10.4271/2008-01-1005
Pages
14
Citation
Abdel-Rehim, A., Henein, N., and VanDyne, E., "Impact of A/F Ratio on Ion Current Features Using Spark Plug with Negative Polarity," SAE Int. J. Passeng. Cars - Electron. Electr. Syst. 1(1):432-445, 2009, https://doi.org/10.4271/2008-01-1005.
Additional Details
Publisher
Published
Apr 14, 2008
Product Code
2008-01-1005
Content Type
Journal Article
Language
English