Influence of gas consumption on the response of metal oxide silicon carbide sensors to exhaust gases
1998 (English)In: EUROSENSORS XII, VOLS 1 AND 2, Institute of Physics Publishing (IOPP), 1998, 249-252 p.Conference paper (Other academic)
Silicon carbide based Schottky diodes w th catalytic gate metals are promising for diagnosis of exhaust gas from combustion engines. The forward voltage measured at a constant current changes from a low level in reducing gases to a high level in oxidising gases. Factorial design in two levels on synthetic exhausts reveal interesting details of the influence of the different components on the sensor signal. Contrary to earlier experiments, an increase of the concentration of hydrocarbons and carbon monoxide increases the signal level. Hydrogen gas behaves as expected, an increased concentration increases the signal level. The total area of catalytic metal was much smaller in the new experiment and the different behavior of the sensor signal can probably be explained by consumption cf gases on catalytic metal surfaces.
Place, publisher, year, edition, pages
Institute of Physics Publishing (IOPP), 1998. 249-252 p.
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-88125ISI: 000077311200061ISBN: 0-7503-0536-3OAI: oai:DiVA.org:liu-88125DiVA: diva2:601801
12th European Conference on Solid-State Transducers - 9th UK Conference on Sensors and Their Applications, 13-16 September 1998, Southampton, UK