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Ion Current Sensing for HCCI Combustion Feedback
Technical Paper
2003-01-3216
ISSN: 0148-7191,
e-ISSN: 2688-3627
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English
Abstract
Measurement of ion current signal from HCCI combustion was performed. The aim of the work was to investigate if a measurable ion current signal exists and if it is possible to obtain useful information about the combustion process. Furthermore, influence of mixture quality in terms of air/fuel ratio and EGR on the ion current signal was studied. A conventional spark plug was used as ionization sensor. A DC voltage (85 Volt) was applied across the electrode gap. By measuring the current through the gap the state of the gas can be probed. A comparison between measured pressure and ion current signal was performed, and dynamic models were estimated by using system identification methods.
The study shows that an ion current signal can be obtained from HCCI combustion and that the signal level is very sensitive to the fuel/air equivalence ratio. The most important result from this study is that the ion current signal proved to be an excellent indicator of the actual combustion timing which is crucial piece of information for HCCI control.
Authors
- Petter Strandh - Volvo Technology AB
- Magnus Christensen - Volvo Technology AB
- Johan Bengtsson - Dept. of Automatic Control, Lund Institute of Technology
- Rolf Johansson - Dept. of Automatic Control, Lund Institute of Technology
- Andreas Vressner - Div. of Combustion Engines, Lund Institute of Technology
- Per Tunestål - Div. of Combustion Engines, Lund Institute of Technology
- Bengt Johansson - Div. of Combustion Engines, Lund Institute of Technology
Citation
Strandh, P., Christensen, M., Bengtsson, J., Johansson, R. et al., "Ion Current Sensing for HCCI Combustion Feedback," SAE Technical Paper 2003-01-3216, 2003, https://doi.org/10.4271/2003-01-3216.Also In
References
- Christensen M.. HCCI Combustion - Engine Operation and Emission Characteristics. PhD thesis, Lund Institute of Technology, TMHP-02/1006-SE, 2002.
- Clements R. M. and Smy P. R.. The variation of ionization with air/fuel ratio for a spark ignition engine. J. Applied Physics, Vol 47(2), 1976.
- Draper C. S.. Pressure waves accompanying detenotion in the internal combustion engine. J. Aeronautical Sciences, 5(6), 1938.
- Franke A.. Characterization of an Electrical Sensor for Combustion Diagnostics. PhD thesis, Lund Institute of Technology, TFCP-80-SE, 2002.
- Johansson R.. System Modeling and Identification. Prentice Hall, Englewood Cliffs, New Jersey, 1993.
- Juang J. N. and Pappa R. S.. An eigensystem realiztion algorithm for modal parameter identification and model reduction. J. Guidance, Control and Dynamics, 1985.
- HoB. L. and Kalman R. E.. Effective construction of linear state-variable models from input/output pressure. Regelungstechnik, (14):545-548, 1966.
- Olsson J-O, Tunestål P, and Johansson B.. Closed-Loop Control of an HCCI engine. In SAE 2001-01-1031, 2001.
- Reinmann R.. Theoretical and Experimental Studies of the Formation of Ionized Gases in Spark Ignition Engines. PhD thesis, Lund Institute of Technology, TFCP-37-SE, 1998.
- Reinmann R, Saitzkoff A, Mauss F, and Glavmo M. Local Air-Fuel Ratio Measurements using the Spark Plug as an Ionization Sensor. In SAE 970856, 1997.