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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Improved Experimental Agreement of Ionization and Pressure Peak Location by Adding a Dynamical NO-Model / Förbättrad experimentell överenstämmelse med jonström- och trycktoppsläge genom införande av en dynamisk NO-modell

Claesson, Daniel January 2004 (has links)
<p>Modelling combustion engines is an important tool in engine research. Development and modelling of ionization current has potential in developing virtual pressure sensors based on ionization measurements. Previous models has problem when predicting the true relationshipbetween the pressure peak location and ionization peak location, and both too early and too late predictions has been observed. An explanation for these discrepancies are provided and a model where the experimental mismatch has been reduced to less than one CAD is also presented. This is well within the measurement uncertainty.</p>
2

Improved Experimental Agreement of Ionization and Pressure Peak Location by Adding a Dynamical NO-Model / Förbättrad experimentell överenstämmelse med jonström- och trycktoppsläge genom införande av en dynamisk NO-modell

Claesson, Daniel January 2004 (has links)
Modelling combustion engines is an important tool in engine research. Development and modelling of ionization current has potential in developing virtual pressure sensors based on ionization measurements. Previous models has problem when predicting the true relationshipbetween the pressure peak location and ionization peak location, and both too early and too late predictions has been observed. An explanation for these discrepancies are provided and a model where the experimental mismatch has been reduced to less than one CAD is also presented. This is well within the measurement uncertainty.

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