Comparator circuit adapted for use in a system for controlling t

Details Comparator circuit adapted for use in a system for controlling t Comparator circuit adapted for use in a system for controlling t

1978-04-21

1980-05-27

Argenbright, Tony

Internal-combustion engines

Noncompression

123119EC, F02M 5100, F02M 712

Patent

active

042044820

ABSTRACT:
Disclosed herein is a comparator circuit used in a system for controlling, in accordance with an air-fuel ratio signal from an O.sub.2 sensor arranged in an exhaust system of an internal combustion engine, the air-fuel ratio of the exhaust gas. The comparator has two inputs, one of which receives a signal having a phase which is the same as a signal from the O.sub.2 sensor, the other of which receives a delayed phase signal. The output of the comparator operates to provide, in accordance with the voltage level difference between the inputs, two deviation signals, one of which indicates that air-fuel ratio has deviated to the rich side of the air-fuel ratio the other of which indicates that the air-fuel ratio has deviated to the lean side of the air-fuel ratio.

REFERENCES:
patent: 4131089 (1978-12-01), Fujishiro et al.
patent: 4132200 (1979-01-01), Asano et al.
patent: 4140086 (1979-02-01), Schnorle et al.

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