Air-fuel ratio feedback control method for internal combustion e

Details Air-fuel ratio feedback control method for internal combustion e Air-fuel ratio feedback control method for internal combustion e

1986-12-23

1988-05-17

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Fuel injection system

123492, F02D 4110

Patent

active

047443456

ABSTRACT:
A method of controlling in a feedback manner the air-fuel ratio of an air-fuel mixture supplied to an internal combustion engine to desired values by correcting the fuel quantity supplied to the engine by means of a correction coefficient which varies in response to output from an exhaust gas ingredient concentration sensor arranged within an exhaust passage, when the engine is operating in an air-fuel ratio feedback control effecting region. When the engine is operating in a predetermined accelerating condition, a mean value of the correction coefficient is calculated and stored. When the engine subsequently enters the predetermined accelerating condition, the air-fuel ratio feedback control is effected using the stored mean value as an initial value of the correction coefficient.

REFERENCES:
patent: 4187812 (1980-02-01), Hosaka et al.
patent: 4485482 (1984-05-01), Hasegawa et al.

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