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Ion Sensing and Spark Advance Control for Best Fuel Economy

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Abstract:
The spark advance determines the efficiency of spark-ignited (SI) engines by positioning the combustion in relation to the piston motion. Today's spark-advance controllers are open-loop systems that measure parameters that effect the spark-advance setting and compensate for their effects. Feedback control is desirable and has been demonstrated by others using extra expensive combustion pressure sensors. Here feedback control is demonstrated using the spark plug as sensor with additional signal interpretation. Furthermore, three different strategies for sensing the spark advance for best fuel economy are investigated with respect to their sensitivity to unmeasured disturbances.

Type of Seminar:
Public Seminar
Speaker:
Prof. Lars Eriksson
Date/Time:
Dec 20, 2000   17:15
Location:

ETH-Zentrum, ETZ E6, Gloriastr. 35, 8006 Zürich
Contact Person:

Prof. L. Guzzella
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Biographical Sketch:
Lars Eriksson was born in Edsbyn, Sweden in 1970. He received the M.Sc. degree in electrical engineering from Linköping University 1995. From 1995 he held a position as research assistant and graduate student until he received his Ph.D. degree in May 1999. Since then he has been an assistant professor at the Division of Vehicular Systems, Linköping University. His research interests are modeling and control of spark ignited internal combustion engines in general.