Air-fuel ratio control method and apparatus for an internal comb

Details Air-fuel ratio control method and apparatus for an internal comb Air-fuel ratio control method and apparatus for an internal comb

1982-08-09

1986-05-06

Argenbright, Tony M.

Internal-combustion engines

Charge forming device

Fuel injection system

123492, F02M 5100

Patent

active

045864780

ABSTRACT:
Closed-loop air-fuel ratio control performed by detecting the concentration of a predetermined component in the exhaust gas, by calculating an air-fuel ratio correction factor depending upon the detected concentration, and by correcting the fuel amount in accordance with the air-fuel ratio correction factor even when the engine is warming up. This closed-loop air-fuel ratio control operation is stopped by fixing the air-fuel ratio correction factor to a predetermined value when the engine is under acceleration during warm-up.

REFERENCES:
patent: 3971354 (1976-07-01), Luchaco et al.
patent: 3983850 (1976-10-01), Stumpp et al.
patent: 4143623 (1979-03-01), Norimatsu et al.
patent: 4187812 (1980-02-01), Hosaka et al.
patent: 4240389 (1980-12-01), Shimazaki
patent: 4375210 (1983-03-01), Ohara et al.
patent: 4398517 (1983-08-01), Kubota et al.
patent: 4498441 (1985-02-01), Ohgami et al.

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