Air/fuel ratio control system for internal combustion engine wit

Details Air/fuel ratio control system for internal combustion engine wit Air/fuel ratio control system for internal combustion engine wit

1988-08-03

1989-12-05

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Fuel injection system

123488, 3644315, F02D 4114, F02M 5100

Patent

active

048845477

ABSTRACT:
An air/fuel ratio control system detects an air/fuel ratio indicative control parameter out of required precision range for initiating a control characteristics derivation process. The control characteristics derivation process is performed by varying constant consisting an air/fuel ratio dependent fuel delivery amount correction coefficient in trial basis to monitor fluctuation range of the correction coefficient. Based on the trial basis processings, the value of the constant is determined so as to compensate the precision level lowered in monitoring the air/fuel ratio.

REFERENCES:
patent: 4624232 (1986-11-01), Saito et al.
patent: 4625699 (1986-12-01), Kobayashi et al.
patent: 4651700 (1987-03-01), Kobayashi et al.
patent: 4655188 (1987-04-01), Tomisawa et al.
patent: 4669439 (1987-06-01), Mamiya et al.
patent: 4730594 (1988-03-01), Hibino et al.
patent: 4738238 (1988-04-01), Ohishi
patent: 4741312 (1988-05-01), Ohishi

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