Setup to eliminate the gas flow dependency of a hydrocarbon sensor for automotive exhaust applications

Title data

Hagen, Gunter ; Harsch, Antonia ; Moos, Ralf:
Setup to eliminate the gas flow dependency of a hydrocarbon sensor for automotive exhaust applications.
2017
Event: Sensor 2017 : 18th International Conference on Sensors and Measurement Technology , 30.05.-01.06.2017 , Nürnberg, Deutschland.
(Conference item: Conference , Speech )
DOI: https://doi.org/10.5162/sensor2017/A4.1

Official URL:

Abstract in another language

Recently, a thermoelectric hydrocarbon sensor was developed for application in exhaust gas atmospheres by using materials which are well-known in the exhaust and stable against poisoning or ageing and at high temperatures. The temperature difference, which is generated between a catalytic activated area during exothermic oxidation of hydrocarbons and an inert area of the sensor, is measured by a special screen-printed thermopile structure. As a matter of principle, this thermovoltage significantly depends on the mass flow of the exhaust. The present contribution helps to understand this cross-effect and proposes a possible setup for its avoidance. By installing the sensor in the correct position of a bypass-solution, the gas flow around the sensor is mostly free of turbulences. Now, the signal depends only on the hydrocarbon concentration and not on the gas flow.

Further data

Item Type:	Conference item (Speech)
Refereed:	Yes
Additional notes:	Chapter A4 - Gas Sensors I
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:	26 Jun 2017 09:01
Last Modified:	26 Jun 2017 09:01
URI:	https://eref.uni-bayreuth.de/id/eprint/38165