In-cylinder Ion Sensing Opportunities

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Fundamental Research• Understandingmechanism andaffecting factors• DesignimprovementKnife EdgeMirror 2Lens 3CameraLens 2Lens 1SwRI Combustion Bombs andHigh Speed Combustion ImagingMirror 1
Fundamental Research - (Cont.)1.4Ignition Command, Ionization, volts1.210.80.60.40.25.55 ms6.57 ms28.60 msignition commandion signal, voltscylinder pressure15001000500Cylinder pressure, kPa000 20 40 60 80 100Time, ms- Ion signal timing relations
Page 1 and 2: Designing Electronic Powertrain Con
Page 3 and 4: What Is Ion Sensing?• Ion Sensing
Page 5 and 6: Mechanism of In-cylinder Ion Sensin
Page 7 and 8: Mechanism of In-cylinder Ion Sensin
Page 9 and 10: Example Hardware ofIn-cylinder Ion
Page 11 and 12: Current EffortsEarly knock detectio
Page 13 and 14: Knock Detection at High SpeedIon si
Page 15: Further Improvement Needed forQuant
Page 19 and 20: Location & Magnitude of Ionization
Page 21 and 22: Speed Effect on Ion SignalIonizatio
Page 23 and 24: Equivalence Ratio Effects atHigher
Page 25 and 26: Location of Peak Ionization Signal-
Page 27 and 28: Summary• The development of ion s
Page 29 and 30: Summary - (Cont.)• Engine operati

In-cylinder Ion Sensing Opportunities

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