Method of controlling air-fuel ratio of an engine

Details Method of controlling air-fuel ratio of an engine Method of controlling air-fuel ratio of an engine

1984-11-14

1986-07-15

Wolfe, Jr., Willis R.

Internal-combustion engines

Engine speed regulator

Having condition responsive means with engine being part of...

123399, F02D 902

Patent

active

045999813

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.

REFERENCES:
patent: 4335689 (1982-06-01), Abe et al.
patent: 4367708 (1983-01-01), Nakamura et al.
patent: 4419973 (1983-12-01), Collonia
patent: 4501240 (1985-02-01), Aono
patent: 4519361 (1985-05-01), Murakami

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