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Title: Dynamometer Testing of Planar Mixed-Potential Sensors

Abstract

Mixed-potential sensors for vehicle on-board emissions monitoring applications have been fabricated in an automotive planar sensor configuration using high temperature ceramic co-fire methods. The sensing element consists of dense Pt and LaSrCrO electrodes and a porous 3 mol% YSZ electrolyte. This sensor construct exhibits preferential selectivity to NOx (NO+NO2) when operated at a positive current bias. The performance of the planar sensors under engine-out conditions was recently evaluated at the Oak Ridge National Laboratory National Transportation Research Center on a GM 1.9L CIDI diesel engine. The sensor response qualitatively tracked transients in NOx measured via FTIR under transient engine operation. Additionally, quantitative correlation between sensor voltage response and total NOx concentration was obtained under steady-state engine speed and load while varying exhaust gas recirculation (EGR) levels.

Authors:
 [1];  [2];  [3];  [3];  [3];  [3];  [1];  [1];  [1]
  1. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  2. Washington State Univ., Vancouver, WA (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1423973
Report Number(s):
LA-UR-14-24279
Journal ID: ISSN 1938-6737
Grant/Contract Number:  
AC52-06NA25396
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
ECS Transactions (Online)
Additional Journal Information:
Journal Volume: 61; Journal Issue: 19; Journal ID: ISSN 1938-6737
Publisher:
Electrochemical Society
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; Material Science

Citation Formats

Kreller, C. R., Sekhar, P. K., Prikhodko, V., Pihl, J., Curran, S., Parks, J. E., Mukundan, R., Garzon, F., and Brosha, E. L. Dynamometer Testing of Planar Mixed-Potential Sensors. United States: N. p., 2014. Web. doi:10.1149/06119.0055ecst.
Kreller, C. R., Sekhar, P. K., Prikhodko, V., Pihl, J., Curran, S., Parks, J. E., Mukundan, R., Garzon, F., & Brosha, E. L. Dynamometer Testing of Planar Mixed-Potential Sensors. United States. https://doi.org/10.1149/06119.0055ecst
Kreller, C. R., Sekhar, P. K., Prikhodko, V., Pihl, J., Curran, S., Parks, J. E., Mukundan, R., Garzon, F., and Brosha, E. L. 2014. "Dynamometer Testing of Planar Mixed-Potential Sensors". United States. https://doi.org/10.1149/06119.0055ecst. https://www.osti.gov/servlets/purl/1423973.
@article{osti_1423973,
title = {Dynamometer Testing of Planar Mixed-Potential Sensors},
author = {Kreller, C. R. and Sekhar, P. K. and Prikhodko, V. and Pihl, J. and Curran, S. and Parks, J. E. and Mukundan, R. and Garzon, F. and Brosha, E. L.},
abstractNote = {Mixed-potential sensors for vehicle on-board emissions monitoring applications have been fabricated in an automotive planar sensor configuration using high temperature ceramic co-fire methods. The sensing element consists of dense Pt and LaSrCrO electrodes and a porous 3 mol% YSZ electrolyte. This sensor construct exhibits preferential selectivity to NOx (NO+NO2) when operated at a positive current bias. The performance of the planar sensors under engine-out conditions was recently evaluated at the Oak Ridge National Laboratory National Transportation Research Center on a GM 1.9L CIDI diesel engine. The sensor response qualitatively tracked transients in NOx measured via FTIR under transient engine operation. Additionally, quantitative correlation between sensor voltage response and total NOx concentration was obtained under steady-state engine speed and load while varying exhaust gas recirculation (EGR) levels.},
doi = {10.1149/06119.0055ecst},
url = {https://www.osti.gov/biblio/1423973}, journal = {ECS Transactions (Online)},
issn = {1938-6737},
number = 19,
volume = 61,
place = {United States},
year = {2014},
month = {9}
}