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Automotive exhaust gas sensors from an electroceramics point of view

Title data

Moos, Ralf:
Automotive exhaust gas sensors from an electroceramics point of view.
2016
Event: 91. DKG Jahrestagung mit Symposium Hochleistungskeramik 2016 , 07.-09.03.2016 , Freiberg, Deutschland.
(Conference item: Conference , Speech )

Abstract in another language

Nowadays, exhaust gas sensors are installed in quantities of millions in automotive exhaust gas aftertreatment systems. One of the few materials that is reliable enough to withstand the harsh exhaust conditions is stabilized zirconia. It combines oxygen ion conductivity, which is required for the sensors’ functionalities, with high strength. Originally produced in classical ceramics technology, most exhaust gas sensors are now produced in ceramic tape and thick-film technology. At first, this contribution outlines briefly the history of zirconia-based exhaust gas sensors, starting from the binary lambda-probe, the wideband lambda probe and the NOx sensor to the recently introduced ammonia sensor. It is also shown how the development of exhaust gas sensors has always to be considered in interaction with exhaust gas aftertreatment systems. This elucidates why novel kinds of sensors have gained in importance just recently when stricter emission regulations were announced, meaning that time was ripe for novel exhaust gas aftertreatment concepts. Another driver for the sensor development are the requirements to detect failures of exhaust gas aftertreatment components directly during car operation. The recently introduced ceramic soot sensor, which indicates already low amounts of soot in the exhaust, is an example for that. Its sole purpose is to diagnose the correct effectiveness of a diesel particulate filter.

Further data

Item Type: Conference item (Speech)
Refereed: Yes
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Functional Materials > Chair Functional Materials - Univ.-Prof. Dr.-Ing. Ralf Moos
Profile Fields > Advanced Fields > Advanced Materials
Research Institutions > Research Centres > Bayreuth Center for Material Science and Engineering - BayMAT
Research Institutions > Research Units > BERC - Bayreuth Engine Research Center
Faculties
Faculties > Faculty of Engineering Science > Chair Functional Materials
Profile Fields
Profile Fields > Advanced Fields
Research Institutions
Research Institutions > Research Centres
Research Institutions > Research Units
Result of work at the UBT: Yes
DDC Subjects: 600 Technology, medicine, applied sciences > 620 Engineering
Date Deposited: 14 Mar 2016 10:00
Last Modified: 18 Apr 2016 07:58
URI: https://eref.uni-bayreuth.de/id/eprint/31736