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Ion-Gap Sense in Misfire Detection, Knock and Engine Control
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1995 by SAE International in United States
Annotation ability available
The combustion of fuel inside an engine cylinder produces ions. By applying a small DC voltage across the spark gap after ignition, ion current is produced. The ion current wave form contains combustion information and is called Ion-Gap sense. Ion-Gap sense is described and can be used to detect misfire, control knock, obtain cam phasing, and detect pre-ignition. In the future, it will provide air/fuel information.
Test results on nine different engine types are summarized for misfire detection. Knock testing is reviewed for eight engines. Engine tests associated with engine control techniques have been included.
|Technical Paper||In-Cylinder Pressure Measurements Using the Spark Plug as an Ionization Sensor|
|Technical Paper||Ignition Control by Ionization Current Interpretation|
|Technical Paper||A Contribution to Knock Statistics|
CitationAuzins, J., Johansson, H., and Nytomt, J., "Ion-Gap Sense in Misfire Detection, Knock and Engine Control," SAE Technical Paper 950004, 1995, https://doi.org/10.4271/950004.
- Shimasaki, Y. et. al. Miyata, S. Spark Plug Voltage Analysis for Monitoring Combustion in an Internal Combustion Engine 930461 SAE International Congress March 1993
- SAE # 902126