Engine air/fuel control with adaptive learning

Details Engine air/fuel control with adaptive learning Engine air/fuel control with adaptive learning

1995-06-30

1996-04-30

Wolfe, Willis R.

Internal-combustion engines

Combustion chamber means combined with air-fuel mixture...

123674, 123695, F02D 4114, F02P 515

Patent

active

055115268

ABSTRACT:
An air/fuel control system for an engine (28) provides an air/fuel indicating signal linearly related to average engine air/fuel operation from a two-state exhaust gas oxygen sensor (44). Fuel delivered to the engine is modulated with a periodic signal (144). Adaptive feedback control (steps 200-280) adaptively learns a desired amplitude for the periodic signal to generate the air/fuel indicating signal with desired sensitivity and operating range.

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