Air/fuel ratio detector

Details Air/fuel ratio detector Air/fuel ratio detector

1984-12-13

1986-06-10

Kaplan, G. L.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204406, 204412, 204425, G01N 2758

Patent

active

045941394

ABSTRACT:
An air/fuel ratio detector for use in measuring or controlling oxygen concentration in exhaust gas from a combustion device, comprising a plurality of solid electrolyte, oxygen ion conducting elements and an electronic control unit. The detector output, which is different over a wide range of air/fuel ratios, from fuel-rich to fuel-lean, enables monitoring of engine operating conditions without having to know beforehand whether the air/fuel ratio is fuel-lean or fuel-rich, and may be used as a feedback control in an internal combustion engine.

REFERENCES:
patent: 4224113 (1980-09-01), Kimura et al.
patent: 4264425 (1981-04-01), Kimura et al.
patent: 4298573 (1981-11-01), Fujishiro
patent: 4450065 (1984-05-01), Yamada et al.

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