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Moos, Ralf:
Automotive Exhaust Gas Sensors Based on Electroceramics : An overview.
2007
Veranstaltung: 31st International Conference on Advanced Ceramics and Composites
, 21.-26.01.2007
, Cocoa Beach, Fl, USA.
(Veranstaltungsbeitrag: Kongress/Konferenz/Symposium/Tagung
,
Sonstige
Präsentationstyp)
Abstract
Exhaust gas sensors are installed in quantities of millions in automotive exhaust gas systems. Not only gasoline engines (as in the past) but also Diesel engines are equipped with at least one air-to-fuel-ratio sensor. The main material that is used is zirconia. In the last decade, a leap in manufacturing technology of zirconia sensors occurred from classical ceramic technology to tape and thick-film technology. For lean-burn engines (gasoline direct injection, Diesel), which become more and more popular, novel exhaust gas aftertreatment concepts are required. This pushes the development of novel types of sensors to be installed in the exhaust. NOx sensors, NH3 sensors and sensors to detect the ammonia loading of SCR catalysts are under development or in the research state. Hydrocarbon sensors are in discussion for on-board diagnosis (OBD) for future cars having very low emission limits. Soot sensors are under study. With respect to miniaturization of existing sensors, two strategies are embarked. Whereas the main suppliers try to reduce the size of their sensors, some research institutions still deal with resistive oxygen sensor that need no reference atmosphere or with novel principles like thermoelectric gas sensors. It is shown how development of exhaust gas sensors has always to be considered in interaction with exhaust gas aftertreatment systems. Hence, novel kinds of sensors have gained in importance just recently, when stricter emission regulations were announced, meaning that time is ripe for novel exhaust gas aftertreatment concepts. However, it is clear that all novel sensors do not only have to meet the technical requirements of the automotive industry but also have to be very inexpensive, reliable, and cost-effective.
Weitere Angaben
| Publikationsform: | Veranstaltungsbeitrag (Sonstige) |
|---|---|
| Begutachteter Beitrag: | Ja |
| Institutionen der Universität: | Fakultäten > Fakultät für Ingenieurwissenschaften Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Funktionsmaterialien > Lehrstuhl Funktionsmaterialien - Univ.-Prof. Dr.-Ing. Ralf Moos Fakultäten Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Funktionsmaterialien Profilfelder > Advanced Fields > Neue Materialien Forschungseinrichtungen > Forschungszentren > Bayreuther Materialzentrum - BayMAT Profilfelder Profilfelder > Advanced Fields Forschungseinrichtungen Forschungseinrichtungen > Forschungszentren |
| Titel an der UBT entstanden: | Ja |
| Themengebiete aus DDC: | 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften |
| Eingestellt am: | 09 Jun 2015 07:18 |
| Letzte Änderung: | 06 Apr 2016 08:22 |
| URI: | https://eref.uni-bayreuth.de/id/eprint/14848 |