The effect of in-cylinder gas flow on the interpretation of the ionization sensor signal

Axel Franke; Patrik Einewall; Bengt Johansson; Nicholas Wickström; Raymond Reinmann; Anders Larsson

doi:10.4271/2003-01-1120

The effect of in-cylinder gas flow on the interpretation of the ionization sensor signal

Axel Franke^*, Patrik Einewall, Bengt Johansson, Nicholas Wickström, Raymond Reinmann, Anders Larsson

^*Corresponding author for this work

Physical Sciences and Engineering

Research output: Contribution to conference › Paper › peer-review

6 Scopus citations

Abstract

The location of the peak pressure can serve as a control parameter to adjust ignition timing and optimize engine performance. The ionization sensor, an electrical probe for combustion diagnostics, can provide information about the peak pressure location. However, the reliability of such information is rather poor. In-cylinder gas flow at the electrodes may be one reason for this. We present results from an investigation of the relationship between ionization sensor current and pressure under various gas flow conditions. The gas flow velocity in the vicinity of the electrode gap was measured by LDA. From the results one may infer how the in-cylinder gas flow affects the reliability of the prediction of pressure peak location from the ionization sensor signal. One finding is that high bulk gas flow impairs the precision of the prediction in certain configurations.

Original language	English (US)
DOIs	https://doi.org/10.4271/2003-01-1120
State	Published - Dec 1 2003
Event	2003 SAE World Congress - Detroit, MI, United States Duration: Mar 3 2003 → Mar 6 2003

Other

Other	2003 SAE World Congress
Country/Territory	United States
City	Detroit, MI
Period	03/3/03 → 03/6/03

ASJC Scopus subject areas

Automotive Engineering
Safety, Risk, Reliability and Quality
Pollution
Industrial and Manufacturing Engineering

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title = "The effect of in-cylinder gas flow on the interpretation of the ionization sensor signal",

abstract = "The location of the peak pressure can serve as a control parameter to adjust ignition timing and optimize engine performance. The ionization sensor, an electrical probe for combustion diagnostics, can provide information about the peak pressure location. However, the reliability of such information is rather poor. In-cylinder gas flow at the electrodes may be one reason for this. We present results from an investigation of the relationship between ionization sensor current and pressure under various gas flow conditions. The gas flow velocity in the vicinity of the electrode gap was measured by LDA. From the results one may infer how the in-cylinder gas flow affects the reliability of the prediction of pressure peak location from the ionization sensor signal. One finding is that high bulk gas flow impairs the precision of the prediction in certain configurations.",

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year = "2003",

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T1 - The effect of in-cylinder gas flow on the interpretation of the ionization sensor signal

AU - Franke, Axel

AU - Einewall, Patrik

AU - Johansson, Bengt

AU - Wickström, Nicholas

AU - Reinmann, Raymond

AU - Larsson, Anders

PY - 2003/12/1

Y1 - 2003/12/1

N2 - The location of the peak pressure can serve as a control parameter to adjust ignition timing and optimize engine performance. The ionization sensor, an electrical probe for combustion diagnostics, can provide information about the peak pressure location. However, the reliability of such information is rather poor. In-cylinder gas flow at the electrodes may be one reason for this. We present results from an investigation of the relationship between ionization sensor current and pressure under various gas flow conditions. The gas flow velocity in the vicinity of the electrode gap was measured by LDA. From the results one may infer how the in-cylinder gas flow affects the reliability of the prediction of pressure peak location from the ionization sensor signal. One finding is that high bulk gas flow impairs the precision of the prediction in certain configurations.

AB - The location of the peak pressure can serve as a control parameter to adjust ignition timing and optimize engine performance. The ionization sensor, an electrical probe for combustion diagnostics, can provide information about the peak pressure location. However, the reliability of such information is rather poor. In-cylinder gas flow at the electrodes may be one reason for this. We present results from an investigation of the relationship between ionization sensor current and pressure under various gas flow conditions. The gas flow velocity in the vicinity of the electrode gap was measured by LDA. From the results one may infer how the in-cylinder gas flow affects the reliability of the prediction of pressure peak location from the ionization sensor signal. One finding is that high bulk gas flow impairs the precision of the prediction in certain configurations.

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U2 - 10.4271/2003-01-1120

DO - 10.4271/2003-01-1120

M3 - Paper

T2 - 2003 SAE World Congress

Y2 - 3 March 2003 through 6 March 2003

ER -

The effect of in-cylinder gas flow on the interpretation of the ionization sensor signal

Abstract

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