Sensing air-to-fuel ratio for engine

Details Sensing air-to-fuel ratio for engine Sensing air-to-fuel ratio for engine

1985-08-28

1986-07-22

Tung, T.

Chemistry: electrical and wave energy

Processes and products

204425, 204426, G01N 2746

Patent

active

046017933

ABSTRACT:
This invention can accurately sense not only the stoichiometric air-to-fuel (A/F) ratio but also A/F other than the stoichiometric A/F by altering the electromotive force of an oxygen sensor at a predetermined value during the operation of an engine by using an oxygen concentration measuring device of the solid electrolyte oxygen pumping type.

REFERENCES:
patent: 3654112 (1972-04-01), Beekmans et al.
patent: 3691023 (1972-09-01), Ruka et al.
patent: 3699032 (1972-10-01), Rapp
patent: 4272329 (1981-06-01), Hetrick et al.
patent: 4391691 (1983-07-01), Linder et al.
patent: 4472262 (1984-09-01), Kondo et al.
patent: 4505806 (1985-03-01), Yamada

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