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Development of New Ion Current Combustion Control System
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English
Abstract
We have developed the New Ion Current Combustion Control System (ICCS) which can control individual cylinder air fuel ratio and ignition timing. And also we could get the significant improvements of performance by adapting this system to our small displacement 3-cylinder engine. The characteristics of this system are as follows.
- 1.To simplify the system architecture, the ignition plug are used for detecting the Ion current, while part of the accumulated energy from the ignition coil is used as the bias power supply.
- 2.To improve the performance for detecting the ion current, the center electrode of the ignition plug are used for the positive pole of the bias power.
- 3.To overcome the lack of repeatability of the ion current magnitude, the following new controlled variables are introduced for the combustion control.
- For the air fuel ratio control, the variation rate of the ion current duration (ICOD) are used.
- For knocking control, the variation rate of the magnitude of ion current filtered through the frequency band corresponding to knocking are used.
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Authors
Citation
Asano, M., Kuma, T., Kajitani, M., and Takeuchi, M., "Development of New Ion Current Combustion Control System," SAE Technical Paper 980162, 1998, https://doi.org/10.4271/980162.Also In
Electronic Engine Controls 1998: Sensors, Actuators, and Development Tools
Number: SP-1356; Published: 1998-02-13
Number: SP-1356; Published: 1998-02-13
References
- Asano M. Kajitani K. Kuma T. Takeuchi M. Fukumura Y. “Development of New Combustion Control System by Ion Current” JSAE Spring Convention No.962-125 1996
- Eriksson L. Nielsen L. Nytomt J. “Ignition Control by Ionization Current Interpretation” SAE 960337 1996
- Hamamoto Y. Yoshiyama S. Tomita E. Hirata N. Ueda A. “Combustion Diagnostics Using a Spark Plug as Ion Probe” Japan Society of Mechanical Engineers 1994
- Saitzkoff A. Reinmann R. Berglind T. Glavon M. “An Ionization Equilibrinm Analysis of the Spark Plug as an Ionization Sensor” SAE 960337 1996
- Terada K. Suzuki S. “Measuring Ignition and Combustion by Detecting Ionization Current” Internal Combustion Engine 17 212 1978
- Kramer M. Wolf K. “Approaches to Gasoline Engine Control Involving the Use of Ion Current Sensor Analysis” SAE 905007 1990
- Auzins J. Johansson H. Nytomt J. “Ion-Gap Sense in Misfire Detection, Knock and Engine Control” SAE 950004 1995