Method and apparatus for controlling air-fuel ratio in internal

Details Method and apparatus for controlling air-fuel ratio in internal Method and apparatus for controlling air-fuel ratio in internal

1985-11-13

1986-12-09

Cox, Ronald B.

Internal-combustion engines

Charge forming device

Having fluidic logic control means

123489, F02B 3300

Patent

active

046274022

ABSTRACT:
In an internal combustion engine having a plurality of cylinders, an air-fuel ratio signal is sampled and held for a selected cylinder, and an air-fuel ratio feedback amount is calculated in accordance with the sampled and held air-fuel ratio signal. During a learning control, a cylinder on the leanest side is determined by changing the selected cylinder. During a feedback control without the learning control, the selected cylinder is fixed as the cylinder on the leanest side.

REFERENCES:
patent: 4111171 (1978-09-01), Aono
patent: 4337745 (1982-07-01), Pomerantz
patent: 4483300 (1984-11-01), Hosaka et al.

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