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Abstract |
Closed Loop Ignition Control by Ionization Current Interpretation
The main result of this paper is a real-time closed loop demonstration
of spark advance control by interpretation of ionization current
signals. The advantages of such a system is quantified. The
ionization current, obtained by using the spark plug as a sensor, is
rich on information, but the signal is also complex.
A key step in our method is to use parameterized functions to describe
the ionization current \cite{Eriksson:1996}.
The results are validated on a SAAB 2.3 l, normally aspirated,
production engine, showing that the placement of the pressure trace
relative to TDC is controlled using only the ionization current for
feedback.
Lars Eriksson, Lars Nielsen and Mikael Glavenius
1997
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Last updated: 2021-11-10
