Method of controlling air-fuel ratio of an engine
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United States of America Patent
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Jul 15, 1986
Grant Date -
N/A
app pub date -
Nov 14, 1984
filing date -
Nov 15, 1983
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method and device for controlling the air-fuel ratio of an internal combustion engine are disclosed. In this method and device the actuator for controlling the air-flow rate is selected as an actuator capable of causing change with passage of time frequently, and the deviation of air-fuel ratio is detected by an air-fuel sensor from a small air-flow rate point corresponding to, for example, an idling speed of engine and a large air-flow rate point corresponding to a predetermined engine speed during running thereby correcting the parameters a and b.
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