In-Cylinder Pressure Measurements Using the Spark Plug as an Ionization Sensor

Paper #:
  • 970857

Published:
  • 1997-02-24
Citation:
Saitzkoff, A., Reinmann, R., Mauss, F., and Glavmo, M., "In-Cylinder Pressure Measurements Using the Spark Plug as an Ionization Sensor," SAE Technical Paper 970857, 1997, https://doi.org/10.4271/970857.
Pages:
13
Abstract:
A model based on an ionization equilibrium analysis, that can relate the ion current to the state of the gas inside the combustion volume, has been presented earlier. This paper introduces several additional models, that together with the previous model have the purpose of improving the pressure predictions. One of the models is a chemistry model that enables us to realistically consider the current contribution from the most relevant species. A second model can predict the crank angle of the peak pressure and thereby substantially increase the accuracy of the pressure predictions. Several other additions and improvements have been introduced, including support for part load engine conditions.
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