APPLICATION OF EXHAUST-GAS-OXYGEN SENSORS TO THE STUDY OF STORAGE EFFECTS IN AUTOMOTIVE THREE-WAY CATALYSTS

The time-average conversion efficiencies of an automotive three-way catalyst subjected to exhaust flows for which A/F is modulated around stoichiometry are benefited by the ability of the catalyst to store oxidizing and reducing chemical species. A V-8 engine equipped with a vapor carburetor and exhaust system containing zirconia exhaust-gas-oxygen sensors before and after a three-way catalyst have been used to study the response of the catalyst to fast changes in exhaust A/F ratio. With this experimental arrangement, qualitative and quantitative observations of storage of oxidizing and reducing chemical species on Engelhard Industries TWC-19D3 catalysts have been made.

  • Supplemental Notes:
    • Published in HS-029 044 (SAE-SP-458), "Sensors for Automotive Systems," Warrendale, Pennsylvania, 1980, pp 13-21. Presented at SAE Congress and Exposition, Detroit, 25-29 February 1980.
  • Corporate Authors:

    Society of Automotive Engineers

    400 Commonwealth Drive
    Warrendale, PA  USA  15096
  • Authors:
    • Meitzler, A H
  • Publication Date: 1980

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00322877
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: SAE 800019, HS-029 046
  • Files: HSL, TRIS
  • Created Date: Jan 19 1984 12:00AM