Next Article in Journal
Leishmania spp. Detection Using a Surface Plasmon Resonance Biosensor
Previous Article in Journal
Low Impedance ALD HfO2 Partially-Filled-Gap Flexural and Bulk MEMS Resonators Piezoresistively Detected for Distributed Mass Sensing
Open AccessProceedings

Detection of NOx in Combustion Engine Exhaust Gas by Applying the Pulsed Polarization Technique on YSZ Based Sensors

1
Siemens AG, Corporate Technology, Otto-Hahn-Ring 6, 81739, Munich, Germany
2
Ludwig-Maximilians-Universität, Munich, Germany
*
Author to whom correspondence should be addressed.
Presented at the Eurosensors 2017 Conference, Paris, France, 3–6 September 2017.
Proceedings 2017, 1(4), 490; https://doi.org/10.3390/proceedings1040490
Published: 9 August 2017
(This article belongs to the Proceedings of Eurosensors)
The pulsed polarization measurement technique applied on sensor devices based on yttria stabilized zirconia (YSZ) with porous platinum electrodes enables the detection of low ppm concentrations of NOx in exhaust gas applications with a simple device. Pulsed polarization is based on alternating voltage pulses with intermediate pauses for self discharging. The discharge characteristics after polarization depends strongly on NOx content in the low ppm range. Due to faster discharging in NOx containing atmospheres compared to base gas, the voltage difference between the discharge curves can act as a concentration dependent parameter. Sensor probes for usage in exhaust gas conditions have been built. The feasibility of NOx sensing in diesel exhaust gas by use of a planar cost-effective YSZ sensor element is evaluated in detail in comparison to commercial NOx exhaust sensors and referenced with gas analysis equipment.
Keywords: exhaust gas sensor; yttria stabilized zirconia; pulsed polarization exhaust gas sensor; yttria stabilized zirconia; pulsed polarization
MDPI and ACS Style

Pohle, R.; Magori, E.; Tawil, A.; Davydovskaya, P.; Fleischer, M. Detection of NOx in Combustion Engine Exhaust Gas by Applying the Pulsed Polarization Technique on YSZ Based Sensors. Proceedings 2017, 1, 490.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop