An experimental sensor has been developed to indicate the air-fuel ratio of an engine operating on lean mixtures. Stabilized zirconia doped with iron was used as the sensor electrolyte. These sensors are internally temperature compensated, eliminating the need for additional temperature sensing or electronics. Sensor output is responsive to exhaust oxygen content, but is independent of exhaust temperatures above 450 degree C at 18:1. Addition of iron increased uniformity of output among sensors.

  • Supplemental Notes:
    • SAE Special Publication SP-427; Automotive Application of Sensors, SAE Int Automotive Engineering Congress and Exposition, Detroit, Michigan, Feb 27-Mar 3, 1978.
  • Corporate Authors:

    Society of Automotive Engineers (SAE)

    400 Commonwealth Drive
    Warrendale, PA  United States  15096
  • Authors:
    • Howarth, D S
    • Wilhelm Jr, R V
  • Publication Date: 1978

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00183284
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Report/Paper Numbers: SAE SP-427
  • Files: TRIS
  • Created Date: Dec 29 1978 12:00AM