Air-fuel ratio detecting device

Details Air-fuel ratio detecting device Air-fuel ratio detecting device

1997-01-27

1997-10-14

Bell, Bruce F.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204426, 204427, 204429, G01N 2726

Patent

active

056768117

ABSTRACT:
An air-fuel ratio detecting element is composed of an oxygen pump portion and an oxygen sensor portion which are provided on a single solid electrolyte sheet, a heating element, and a spacer. The oxygen pump portion is composed of a pair first of electrodes provided on opposite sides of the solid electrolyte sheet, and a communication hole which is formed through the solid electrolyte sheet and the electrodes. Electrodes are disposed on the solid electrolyte sheet on the same side as the second electrode, whereby the oxygen sensor portion is formed. The spacer has an opening and a slit-like opening. The heating element 4, the spacer, and the solid electrolyte sheet are stacked from bottom to top, and then the stacked assembly is baked. In this case, they are stacked such that the opening faces the first electrodes and the second electrode. By disposing the oxygen pump portion and the oxygen sensor portion on the same solid electrolyte sheet, structure can be made simpler compared with a conventional air-fuel ratio detecting element in which a solid electrolyte sheet is used for each of an oxygen pump portion and an oxygen sensor portion.

REFERENCES:
patent: 4282080 (1981-08-01), Muller et al.
patent: 4579643 (1986-04-01), Mase et al.
patent: 4647364 (1987-03-01), Mase et al.
patent: 4670128 (1987-06-01), Mase et al.
patent: 4718999 (1988-01-01), Suzuki et al.
patent: 4755274 (1988-07-01), Mase et al.
patent: 4824548 (1989-04-01), Iino et al.
patent: 4859307 (1989-08-01), Nishizawa et al.
patent: 4927517 (1990-05-01), Mizutani et al.
patent: 4943330 (1990-07-01), Iino et al.
patent: 4990235 (1991-02-01), Chujo
patent: 5064693 (1991-11-01), Hayakawa et al.
patent: 5360528 (1994-11-01), Oh et al.
Soejima et al: "Multi-Layered Zirconia Oxygen Sensor for Lean Burn Engine Application", 1986 Society of Automotive Engineers, Inc., pp. 3163-3168. no month available.

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