Air fuel ratio control method

Details Air fuel ratio control method Air fuel ratio control method

1984-03-21

1985-05-21

Lall, Parshotam S.

Internal-combustion engines

Charge forming device

Fuel injection system

F02M 5100

Patent

active

045179492

ABSTRACT:
A fuel injection quantity is varied by correcting a correction value so that a mean value of a factor of air-fuel ratio feedback correction obtained from the output of an O.sub.2 sensor takes a value within a predetermined range centered at a value corresponding to a stoichiometric air-fuel ratio, and a fuel injection quantity is calculated based on a basic fuel injection quantity, the factor of air-fuel ratio feedback correction and the correction value, thereby to effect control so that the air-fuel ratio converges in proximity of the stoichiometric air-fuel ratio.

REFERENCES:
patent: 3895611 (1975-07-01), Endo et al.
patent: 4235204 (1980-11-01), Rice
patent: 4321903 (1982-03-01), Kondo et al.
patent: 4357828 (1982-11-01), Nakano
patent: 4467770 (1984-08-01), Arimura et al.

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