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Ion Current Sensing for Spark Ignition Engines
Technical Paper
1999-01-0204
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper describes an ion current measurement system with a new, modified inductive ignition system and evaluates the detection quality for misfire and knock detection.
The System uses an ignition circuit with adjustable spark duration limitation. The measurement circuit is located at the low tension side of the secondary ignition coil.
Due to the fact that a lot of influencing factors on misfire detection have been investigated, the estimation of the signal-to-noise-ratio is possible as well as the detection of critical operation points.
Results of a closed-loop knock control with ion current are presented and are compared with the structure borne noise method.
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Citation
Förster, J., Günther, A., Ketterer, M., and Wald, K., "Ion Current Sensing for Spark Ignition Engines," SAE Technical Paper 1999-01-0204, 1999, https://doi.org/10.4271/1999-01-0204.Also In
Electronic Engine Controls 1999: Sensors, Actuators, and Development Tools
Number: SP-1418; Published: 1999-03-01
Number: SP-1418; Published: 1999-03-01
References
- SAE 980166 In-Cylinder Air/Fuel Ratio Approximation Using Spark Gap Ionization Sensing Wayne State University; Adrenaline Research, Inc.
- Hickling R. Feldmaier D.A. Chen F.H.K. Morel J.S. Cavity resonances in engine combustion chambers and some applications J.Acoust.Soc.Am. 73 4 1170 1178 April 1983