Flexfuel vehicle alcohol-gasoline blend ratio determination by optical fiber sensoring

Rafael T. Takeishi; Edmilton Gusken; Klaus Raizer; Henrique G. E. de Souza; Bernardo M. Meirelles; José L. Giacomassi; Gustavo C. Lucio; Carlos K. Suzuki

doi:10.1117/12.786049

16 May 2008 Flexfuel vehicle alcohol-gasoline blend ratios determination by optical fiber sensoring

Rafael T. Takeishi, Edmilton Gusken, Klaus Raizer, Henrique G. E. de Souza, Bernardo M. Meirelles, José L. Giacomassi, Gustavo C. Lucio, Carlos K. Suzuki

Author Affiliations +

Proceedings Volume 7004, 19th International Conference on Optical Fibre Sensors; 70044F (2008) https://doi.org/10.1117/12.786049
Event: 19th International Conference on Optical Fibre Sensors, 2008, Perth, WA, Australia

Abstract

The high efficiency combustion of flexfuel engine depends on the precise determination of the alcohol-gasoline ratios. Presently, commercial technique available uses the Lambda probe, a post-combustion sensor to analyze the exhaust gases (after combustion). This ratio can be measured in real-time using an optical fiber sensor. In the present research, different ratios of alcohol-gasoline blends were measured at temperatures in the range 0 to 50°C, by a Fresnel reflectometer. The sensoring principle is based on the phenomenon of light reflectivity in the interface fiber-fuel. The reflected intensity is proportional to the refractive index difference between the fiber sensor and the fuel, while the refractive index of the mixture is a function of the volumetric ratio of the substances. The real time determination of the mixture ratio of alcohol-gasoline concentrations by the reflected intensity can be used to optimize the combustion efficiency of the flexfuel engine. It can be expected that this technology can reduce both, the pollutant emissions and the fuel consumption.

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Rafael T. Takeishi, Edmilton Gusken, Klaus Raizer, Henrique G. E. de Souza, Bernardo M. Meirelles, José L. Giacomassi, Gustavo C. Lucio, and Carlos K. Suzuki "Flexfuel vehicle alcohol-gasoline blend ratios determination by optical fiber sensoring", Proc. SPIE 7004, 19th International Conference on Optical Fibre Sensors, 70044F (16 May 2008); https://doi.org/10.1117/12.786049

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