| Abstract
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<p>This paper investigates the use o … <p>This paper investigates the use of the ionization current to estimate the Coefficient of Variation for the Indicated Mean Effective Pressure, COV(IMEP), which is a common variable for combustion stability in a spark-ignited engine. Stable combustion in this definition implies that the variance of the produced work, measured over a number of consecutive combustion cycles, is small compared to the mean of the produced work. The COV(IMEP) is varied experimentally either by increasing EGR flow or by changing the air-fuel ratio, in both a laboratory setting (engine in dynamometer) and in an on-road setting. The experiments show a positive correlation between COV(Ion integral), the Coefficient of Variation for the integrated Ion Current, and COV(IMEP), when measured under low load on an engine in a dynamometer, but not under high load conditions. On-road experiments show a positive correlation, but only in the EGR and the lean burn case. An approach based on individual cycle classification for real-time estimation of combustion stability is discussed.</p>mbustion stability is discussed.</p>
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| Author
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Stefan Byttner +
, Thorsteinn Rögnvaldsson +
, Nicholas Wickström +
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| Conference
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SAE International Fall Fuels & Lubricants Meeting & Exhibition, September 2001, San Antonio, TX, USA, Session: Experimental Investigation of SI Engines (Part A&B)
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| DOI
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http://dx.doi.org/10.4271/2001-01-3485 +
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| Diva
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http://hh.diva-portal.org/smash/record.jsf?searchId=1&pid=diva2:327068
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| PublicationType
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Conference Paper +
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| Publisher
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Society of automotive engineers (SAE) +
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| Series
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SAE technical paper series ; 2001 +
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| Title
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Estimation of Combustion Variability Using In-Cylinder Ionization Measurements +
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| Year
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2001 +
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| Has queryThis property is a special property in this wiki.
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Publications:Estimation of Combustion Variability Using In-Cylinder Ionization Measurements +
, Publications:Estimation of Combustion Variability Using In-Cylinder Ionization Measurements +
, Publications:Estimation of Combustion Variability Using In-Cylinder Ionization Measurements +
, Publications:Estimation of Combustion Variability Using In-Cylinder Ionization Measurements +
, Publications:Estimation of Combustion Variability Using In-Cylinder Ionization Measurements +
, Publications:Estimation of Combustion Variability Using In-Cylinder Ionization Measurements +
, Publications:Estimation of Combustion Variability Using In-Cylinder Ionization Measurements +
, Publications:Estimation of Combustion Variability Using In-Cylinder Ionization Measurements +
, Publications:Estimation of Combustion Variability Using In-Cylinder Ionization Measurements +
, Publications:Estimation of Combustion Variability Using In-Cylinder Ionization Measurements +
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| Categories |
Publication +
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| Modification dateThis property is a special property in this wiki.
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13 March 2014 11:49:55 +
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