Combining impedance spectroscopy with optical absorption spectroscopy in the UV for biofuel composition measurement
Paper in proceeding, 2017

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.

Optical absorption spectroscopy

Fuel sensor

Ternary mixtures

Impedance spectroscopy

Biofuel composition

Author

Luke Middelburg

Delft University of Technology

Mohammadamir Ghaderi

Delft University of Technology

Andre Bossche

Delft University of Technology

J. Bastemeijer

Delft University of Technology

Ger de Graaf

Delft University of Technology

Reinoud F. Wolffenbuttel

Delft University of Technology

R. Soltis

Ford Motor Company

Jaco H. Visser

Ford Motor Company

I2MTC 2017 - 2017 IEEE International Instrumentation and Measurement Technology Conference, Proceedings


978-150903596-0 (ISBN)

I2MTC 2017 - 2017 IEEE International Instrumentation and Measurement Technology Conference
Torino, Italy,

Subject Categories

Atom and Molecular Physics and Optics

Other Electrical Engineering, Electronic Engineering, Information Engineering

DOI

10.1109/I2MTC.2017.7969676

More information

Latest update

4/14/2022