Device for detecting air-fuel ratio of engine

Details Device for detecting air-fuel ratio of engine Device for detecting air-fuel ratio of engine

1987-11-20

1989-06-27

Niebling, John F.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204412, 204425, 204 1T, 123440, 123489, G01N 2746

Patent

active

048427110

ABSTRACT:
A device for detecting the air-fuel ratio of an engine by measuring an oxygen concentration of the exhaust gas by means of an oxygen sensor including an oxygen pump and a cell element for measuring the oxygen concentration ratio, comprising an air-fuel ratio detecting circuit which reads the output signal of the oxygen sensor and effects the detection of the air-fuel ratio when TDC signal has been produced, depending upon the operation of the engine, and a time previously set by a timer has passed.

REFERENCES:
patent: 4617901 (1986-10-01), Otobe
patent: 4697564 (1987-10-01), Ohgami

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