Air-to-fuel ratio sensor

Details Air-to-fuel ratio sensor Air-to-fuel ratio sensor

1984-09-06

1986-02-04

Kaplan, G. L.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204412, 204425, 204426, G01N 2758

Patent

active

045684430

ABSTRACT:
An air-to-fuel ratio sensor of a construction, wherein an oxygen concentration cell having a chamber, at least one side of which is communicative with the atmosphere and an oxygen pump are disposed in mutual confrontation through a clearance chamber, or a spatial chamber having a tiny hole for dispersion, and gas to be measured is introduced into this clearance chamber or the spatial chamber to measure its air-to-fuel ratio from an output of the oxygen concentration cell or a control quantity of the oxygen pump, thereby making it possible to control the internal combustion engine over a wide range other than its theoretical air-to-fuel ratio.

REFERENCES:
patent: 3400054 (1968-09-01), Ruka et al.
patent: 3907657 (1975-09-01), Heijne et al.
patent: 4088543 (1978-05-01), Ruka
patent: 4158166 (1979-06-01), Isenberg
patent: 4272329 (1981-06-01), Hetrick et al.
patent: 4272330 (1981-06-01), Hetrick
patent: 4272331 (1981-06-01), Hetrick
patent: 4384935 (1983-05-01), DeJong
patent: 4396466 (1983-08-01), Hetrick et al.
patent: 4450065 (1984-05-01), Yamada et al.

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