Method of indicating a basic air-fuel ratio condition of an inte

Details Method of indicating a basic air-fuel ratio condition of an inte Method of indicating a basic air-fuel ratio condition of an inte

1980-09-02

1982-11-09

Myracle, Jerry W.

Measuring and testing

Vehicle chassis

Steering

123440, 340 53, G01M 1500

Patent

active

043578284

ABSTRACT:
An average value of an air-fuel ratio correction signal, which is gradually increased or decreased in accordance with output of an exhaust gas sensor for detecting the concentration of a particular component in the exhaust gas, and which is utilized for controlling air-fuel ratio of the mixture supplied to an engine, is generated. Then, the generated average signal is compared with a plurality of predetermined values to discriminate a range in which the average signal is positioned among a plurality of ranges specified by the plurality of predetermined values. Thereafter a signal which represents the discriminated range is produced. This signal energizes an indicator to inform an operator of the basic air-fuel ratio condition of the engine.

REFERENCES:
patent: 3581555 (1971-06-01), Cline
patent: 4223644 (1980-09-01), Latsch et al.

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