Number | Name | Date | Kind |
---|---|---|---|
3781838 | Primmer | Dec 1974 | |
4102127 | Saiki et al. | Jul 1978 | |
4648367 | Gillbrand et al. | Mar 1987 | |
4862093 | Jiewertz | Aug 1989 | |
5087882 | Iwata | Feb 1992 | |
5189373 | Murata et al. | Feb 1993 | |
5222393 | Ohsawa | Jun 1993 | |
5230240 | Ohsawa et al. | Jul 1993 | |
5247919 | Akaki et al. | Sep 1993 | |
5253475 | Kabasin | Oct 1993 | |
5283527 | DeBiasi | Feb 1994 |
Entry |
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SAE Paper 930461, entitled "Spark Plug Voltage Analysis for Monitoring Combustion in an Internal Combustion Engine"; Yuichi Shimasaki et al. (pp. 1-21) (1993). |
SAE Paper 930462, entitled "Flame Ion Density Measurement Using Spark Plug Voltage Analysis"; Miyata et al. (pp. 1-11) (1993). |