ZIRCONIA OXYGEN SENSOR -- AN EQUIVALENT CIRCUIT MODEL

The zirconia exhaust gas oxygen sensor is a key component in closed loop engine emissions control systems. An equivalent circuit model of the sensor is derived from fundamental electrochemical principles. In this model, sensor electrode resistance and capacitance are separated from the zirconia electrolyte resistance. Numerical examples are given to show how the equivalent circuit can be used to model both steady state and transient characteristics of sensors.

• Supplemental Notes:
  • Published in HS-029 044 (SAE-SP-458), "Sensors for Automotive Systems," Warrendale, Pennsylvania, 1980, pp 23-37. Presented at SAE Congress and Exposition, Detroit, 25-29 February 1980.
• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • FLEMING, W J
• Publication Date: 1980

Media Info

• Features: References;
• Pagination: 39 p.
• Serial:
  • Society of Automotive Engineers Preprint
  • Publisher: Society of Automotive Engineers (SAE)

Subject/Index Terms

• TRT Terms: Air quality management; Applications; Control systems; Electrolytes; Exhaust gases; Feedback control; Internal combustion engines; Loops (Control systems); Mathematical models; Oxygen; Sensors; Vehicle power plants
• Old TRIS Terms: Automobile engines; Exhaust emission control; Exhaust gas oxygen sensors
• Subject Areas: Highways; Research; Vehicles and Equipment; I95: Vehicle Inspection;

Filing Info

• Accession Number: 00322873
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: SAE 800020, HS-029 047
• Files: HSL, TRIS
• Created Date: Jan 19 1984 12:00AM