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Use of Ionization Current to Estimate CO Rate in a Small 2-Stroke SI Engine
Technical Paper
2015-24-2525
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
This paper presents an experimental study on a 2-stroke SI engine, used on small portable tools for gardening or agriculture, aimed to identify possible correlations between parameters related to ionization current and air/fuel mixture richness, considering different fuels and spark plug wear. This, to realize a simple system to control the engine parameters and adapt them to engine aging and fuel type changing.
The engine was fed with commercial gasoline, low octane number gasoline, alkylate gasoline and a blend of 80% gasoline and 20% ethanol. In all tests carried out with varying engine speed and spark advance the ionization signal was characterized by a single peak, resulting in the impossibility of distinguishing chemical and thermal ionization. All data collected were analyzed looking for correlations between all the available data of CO emissions and several characteristic parameters obtained from the ionization signal.
The correlations are targeted to estimate CO rate at exhaust so as to realize a virtual CO sensor for AFR control purposes. An effective strategy, based on the measurement of a series of ionization waveforms while the richness of the mixture is changing, normalized with respect to the maximum values and considering operating conditions where CO rate is more than 2%, is set up making feasible the control of these small 2-stroke engines using the ionization current signal.
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Citation
De Simio, L., Iannaccone, S., Gambino, M., Giglio, V. et al., "Use of Ionization Current to Estimate CO Rate in a Small 2-Stroke SI Engine," SAE Technical Paper 2015-24-2525, 2015, https://doi.org/10.4271/2015-24-2525.Data Sets - Support Documents
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References
- Blair , G. The Basic Design of Two-Stroke Engines Society of Automotive Engineers, Inc. Warrendale, PA 1-56091-008-9 1990 /R-104
- Zardini A a. , Platt SM , Clairotte M et al. Effects of alkylate fuel on exhaust emissions and secondary aerosol formation of a 2-stroke and a 4-stroke scooter Atmos. Environ 2014 94 307 315
- Lundström , D. and Schagerberg , S. Misfire Detection for Prechamber SI Engines Using Ion-Sensing and Rotational Speed Measurements SAE Technical Paper 2001-01-0993 2001 10.4271/2001-01-0993
- Kondo , N. , Suzuki , T. , Sakakura , Y. , and Yamada , T. Combustion Monitoring by use of the Spark Plug for DI Engine SAE Technical Paper 2001-01-0994 2001 10.4271/2001-01-0994
- Andersson , I. and Eriksson , L. Ion Sensing for Combustion Stability Control of a Spark Ignited Direct Injected Engine SAE Technical Paper 2000-01-0552 2000 10.4271/2000-01-0552
- Byttner , S. , Rögnvaldsson , T. , and Wickström , N. Estimation of Combustion Variability Using In-cylinder Ionization Measurements SAE Technical Paper 2001-01-3485 2001 10.4271/2001-01-3485
- Byttner , S. , Holmberg , U. , and Wickström , N. An Ion Current Algorithm for Fast Determination of High Combustion Variability SAE Technical Paper 2004-01-0522 2004 10.4271/2004-01-0522
- Eriksson L. , Nielsen L. Ionization current interpretation for ignition control in internal combustion engines Control Engineering Practice 5 8 August 1997 1107 1113 0967-0661 http://dx.doi.org/10.1016/S0967-0661(97)00103-2
- Moudden Y , Seghouane A , Boubal O. Extraction of peak pressure position information from the spark-plug ionization signal Computer Standards & Interfaces 24 2 June 2002 161 170 0920-5489 http://dx.doi.org/10.1016/S0920-5489(02)00013-2
- Gao Z , Wu X , Gao H et al. Investigation on characteristics of ionization current in a spark-ignition engine fueled with natural gas-hydrogen blends with BSS de-noising method Int. J. Hydrogen Energy 35 23 December 2010 12918 12929 0360-3199 http://dx.doi.org/10.1016/j.ijhydene.2010.08.129
- Tanaka T. , Narahara K. , Tabata M. , Yoshiyama S. , Tomita E. Ion current measurement in a homogeneous charge compression ignition engine International Journal of Engine Research October 1 2005 6 5 453 463 10.1243/146808705X30413
- Mehresh P. , Flowers D. , Dibble R. W. Experimental and numerical investigation of effect of fuel on ion sensor signal to determine combustion timing in homogeneous charge compression ignition engines International Journal of Engine Research October 1 2005 6 5 465 474 10.1243/146808705X30404
- Aulin , H. , Bentioulis , P. , Tunestål , P. , Hyvönen , J. et al. Improving Ion Current Feedback for HCCI Engine Control SAE Technical Paper 2007-01-4053 2007 10.4271/2007-01-4053
- Dong G , Li L , Wu Z , Zhang Z , Zhao D. Study of the phase-varying mechanisms of ion current signals for combustion phasing in a gasoline HCCI engine Fuel 113 November 2013 209 215 0016-2361 http://dx.doi.org/10.1016/j.fuel.2013.05.040
- Reinmann , R. , Saitzkoff , A. , and Mauss , F. Local Air-Fuel Ratio Measurements Using the Spark Plug as an Ionization Sensor SAE Technical Paper 970856 1997 10.4271/970856
- Schneider , D. and Lai , M. Real-Time Air/Fuel-Ratio Control in a Small SI Engine Using the Ionic Current Signal SAE Technical Paper 1999-01-3323 1999 10.4271/1999-01-3323
- Klövmark , H. , Rask , P. , and Forssell , U. Estimating the Air/Fuel Ratio from Gaussian Parameterizations of the Ionization Currents in Internal Combustion SI Engines SAE Technical Paper 2000-01-1245 2000 10.4271/2000-01-1245
- Wickstrom , N. , Byttner , S. , and Holmberg , U. Robust Tuning of Individual Cylinders AFR in SI Engines with the Ion Current SAE Technical Paper 2005-01-0020 2005 10.4271/2005-01-0020
- Rivara N , Dickinson PB , Shenton AT A transient virtual-AFR sensor using the in-cylinder ion current signal Mech. Syst. Signal Process 2009 23 5 1672 1682
- Beck , K. , Bernhardt , S. , Spicher , U. , Gegg , T. et al. Ion-Current Measurement in Small Two-Stroke SI Engines SAE Technical Paper 2008-32-0037 2008 10.4271/2008-32-0037
- Grupp , D. and Martin , J. Ignition System Characteristics and Effects on Combustion for a Two-Stroke Engine SAE Technical Paper 2002-01-0644 2002 10.4271/2002-01-0644