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

1990-03-12

1991-09-24

Nelli, Raymond A.

Internal-combustion engines

Charge forming device

Fuel injection system

123 1A, F02M 5100

Patent

active

050505610

ABSTRACT:
An air/fuel ratio control system derives a air/fuel ratio dependent correction value for correcting a basic fuel delivery amount as a proportional-integral control value composed of a proportional component and an integral component. The proportional component is derived on the basis of an air/fuel ratio indicative signal which varies the signal level when the air/fuel ratio varies across a predetermined stoichiometric value. The integral component is derived on the basis of a basic fuel delivery amount which is derived on the basis of engine speed and an engine load.

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patent: 4854286 (1989-08-01), Chemnitzer
patent: 4905655 (1990-03-01), Maekawa

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