Method and apparatus for controlling air-fuel ratio in internal

Details Method and apparatus for controlling air-fuel ratio in internal Method and apparatus for controlling air-fuel ratio in internal

1985-07-30

1986-12-02

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Fuel injection system

123440, F02D 4114

Patent

active

046256997

ABSTRACT:
In an internal combustion engine wherein a learning correction amount for improving the drivability in a high altitude is introduced into the feedback control of the air-fuel ratio, a lower limit is imposed on the learning correction amount, and a reference value for the lower limit is renewed in accordance with comparison of the mean value of an air-fuel ratio correction amount with a predetermined value and comparison of the learning correction amount with the reference value in an idling state.

REFERENCES:
patent: 4413601 (1983-11-01), Matsuoka et al.
patent: 4461261 (1984-07-01), Isomura et al.
patent: 4467769 (1984-08-01), Matsumura
patent: 4517949 (1985-05-01), Ito et al.

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