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Proceedings 2017, 1(4), 424; doi:10.3390/proceedings1040424

Direct Catalyst Conversion Sensor in Form of a Single Self-Heated Mixed-Potential Device

Department of Functional Materials, Bayreuth Engine Research Center, University of Bayreuth, 95440 Bayreuth, Germany
Presented at the Eurosensors 2017 Conference, Paris, France, 3–6 September 2017.
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Published: 7 August 2017
(This article belongs to the Proceedings of Eurosensors 2017)
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Abstract

Monitoring automotive exhaust gas aftertreatment components is required by law as part of the on-board diagnostics (OBD). For this purpose, a novel sensor device that determines directly the catalyst conversion could be used. It consists of a single, self-heated yttria stabilized ZrO2-based disc, separating two gas atmospheres. Two identical mixed-potential electrodes yield a voltage signal by comparing a certain trace gas concentration up- and downstream of the catalyst. Measurements in synthetic gas flow verify the theoretical assumption that this voltage signal only depends on the ratio of both concentrations, respectively on the conversion of the catalyst.
Keywords: conversion sensor; on-board diagnostics; mixed-potential sensor; electrochemical comparison; high temperature co-fired ceramics (HTCC) conversion sensor; on-board diagnostics; mixed-potential sensor; electrochemical comparison; high temperature co-fired ceramics (HTCC)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Ritter, T.; Hagen, G.; Moos, R. Direct Catalyst Conversion Sensor in Form of a Single Self-Heated Mixed-Potential Device. Proceedings 2017, 1, 424.

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