P5.5 - Detection of water condensation on exhaust gas sensors

Event
SENSOR+TEST Conferences 2009
2009-05-26 - 2009-05-28
Congress Center Nürnberg
Band
Proceedings SENSOR 2009, Volume II
Chapter
P5 - Gas-Sensors
Author(s)
D. Schoenauer, R. Moos - Universität Bayreuth, Bayreuth, Germany, A. Nauwerck, T. Gysin - Abgaszentrum der Automobilindustrie, Weissach, Germany
Pages
403 - 406
DOI
10.5162/sensor09/v2/p5.5
ISBN
978-3-9810993-5-5
Price
free

Abstract

An interdigital H2O sensing structure applied on a ceramic element provides the possibility to determine the water condensation process in the exhaust system of an internal combustion engine during cold-start. In lab tests, a clear correlation between capacity change and water droplet size was found. In engine cold start tests it was proven that the start and the end points of the water condensation processes can be detected.

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