Print Email Facebook Twitter Combining impedance spectroscopy with optical absorption spectroscopy in the UV for biofuel composition measurement Title Combining impedance spectroscopy with optical absorption spectroscopy in the UV for biofuel composition measurement Author Middelburg, L.M. (TU Delft Electronic Components, Technology and Materials) Ghaderi, M. (TU Delft Electronic Instrumentation) Bossche, A. (TU Delft Electronic Instrumentation) Bastemeijer, J. (TU Delft Electronic Instrumentation) de Graaf, G. (TU Delft Electronic Instrumentation) Wolffenbuttel, R.F. (TU Delft Electronic Instrumentation) Soltis, Rick (Ford Motor Company) Visser, Jaco (Ford Motor Company) Date 2017 Abstract A capacitive probe is generally used in a flex-fuel engine for measuring the ethanol content in biofuel. However, the water content in biofuel of high ethanol content cannot be disregarded or considered constant and the full composition measurement of ethanol, gasoline and water in biofuel is required. Electrical impedance spectroscopy with a customized capacitive probe operating in the 10 kHz to 1 MHz frequency range is combined with optical absorption spectroscopy in the UV spectral range between 230 and 300 nm for a full composition measurement. This approach is experimentally validated using actual fuels and the results demonstrate that electrical impedance spectroscopy when supplemented with optical impedance spectroscopy can be used to fully determine the composition of the biofuel and applied for a more effective engine management. A concept for a low-cost combined measurement system in the fuel line is presented. Subject Biofuel compositionFuel sensorImpedance spectroscopyOptical absorption spectroscopyTernary mixtures To reference this document use: http://resolver.tudelft.nl/uuid:417b7b56-42e9-48d9-b705-6a63d4603729 DOI https://doi.org/10.1109/I2MTC.2017.7969676 Publisher IEEE, Piscataway, NJ ISBN 978-1-5090-3596-0 Source 2017 IEEE International Instrumentation and Measurement Technology Conference (I2MTC 2017) Proceedings Event 2017 IEEE International Instrumentation and Measurement Technology Conference, 2017-05-22 → 2017-05-25, Torino, Italy Bibliographical note Accepted author manuscript Part of collection Institutional Repository Document type conference paper Rights © 2017 L.M. Middelburg, M. Ghaderi, A. Bossche, J. Bastemeijer, G. de Graaf, R.F. Wolffenbuttel, Rick Soltis, Jaco Visser Files PDF 26111083_I2MTC2017_Luke_v5.pdf 667.55 KB Close viewer /islandora/object/uuid:417b7b56-42e9-48d9-b705-6a63d4603729/datastream/OBJ/view