P7.3 - AdBlue Quality Control using Impedance Spectroscopy
- AMA Conferences 2015
2015-05-19 - 2015-05-21
- Proceedings SENSOR 2015
- P7 - Spectroscopy
- A. Fendri, P. Büschel, A. Abelkafi, O. Kanoun - Technische Universität Chemnitz (Germany), A. Buchholz - Seuffer GmbH & Co.KG, Calw (Germany)
- 830 - 832
Europe Union has established certain rules in order to reduce the contribution of vehicle engines to the Nitrogen Oxide (NOx) in air. SCR (Selective Catalytic Reduction) is one of the methods adopted by the vehicle manufacturers to meet the Europe union rules. It reduces NOx emissions using AdBlue in the exhaust flow. AdBlue is an aqueous solution made with 32.5% pure urea and 67.5% de-ionized water. In order to be sure that systems are not compromised, it is essential to control the AdBlue quality in the tank. This work demonstrates that it’s possible to determine the quality of AdBlue depending on the Urea. The results show the influence of urea concentration on the electrochemical behavior of the measured solution.