Automotive, internal reference, solid electrolyte, lean oxygen s

Details Automotive, internal reference, solid electrolyte, lean oxygen s Automotive, internal reference, solid electrolyte, lean oxygen s

1986-08-21

1988-02-09

Niebling, John F.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204426, 204427, G01N 2746

Patent

active

047240610

ABSTRACT:
Rapid response, highly precise determinations of oxygen partial pressures in internal combustion engines operating with lean air/fuel mixtures are accomplished by using a thin film internal reference, solid electrolyte electrochemical type oxygen sensor comprising laterally disposed galvanic sense and pump cells on a single planar substrate, and an internal reference gas chamber provided by a cap. A cerium dioxide, thin film electrode on the galvanic pump cell provides an oxygen reservoir for the internal reference gas chamber.

REFERENCES:
patent: 4158166 (1979-06-01), Isenberg
patent: 4272350 (1981-06-01), Croset et al.
patent: 4296148 (1981-10-01), Friese
patent: 4354912 (1982-10-01), Friese
patent: 4462890 (1984-07-01), Touda et al.
patent: 4487680 (1984-12-01), Logothetis et al.
patent: 4571285 (1986-02-01), Nakazawa et al.
Measurements of Chemical Diffusion Coefficients in Non-Stoichiometric Oxides Using Solid State Electrochemical Technique by B. C. H. Steele and C. C. Riccardi, pp. 123-135.

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