publication . Doctoral thesis . 2010

Solid State Electrochemical Sensors for Nitrogen Oxide (NOx) Detection in Lean Exhaust Gases

Rheaume, Jonathan Michael;
Open Access English
  • Published: 01 Jan 2010
  • Publisher: eScholarship, University of California
  • Country: Mexico
Abstract
Solid state electrochemical sensors that measure nitrogen oxides (NOx) in lean exhaust have been investigated in order to help meet future on-board diagnostic (OBD) regulations for diesel vehicles. This impedancemetric detection technology consists of a planar, single cell sensor design with various sensing electrode materials and yttria-stabilized zirconia (YSZ) as the electrolyte. No reference to ambient air is required. An impedance analysis method yields a signal that is proportional to the analyte gas concentration at a specific frequency. These sensors function by detecting the change in impedance caused by electron exchange in the redox reactions of NOx g...
Subjects
free text keywords: Mechanical engineering, Automotive engineering, impedancemetric, LSM, NOx, sensor, YSZ, zirconia
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