Air/fuel ratio control system and method

Details Air/fuel ratio control system and method Air/fuel ratio control system and method

1999-04-26

2000-12-05

Solis, Erick

Internal-combustion engines

Charge forming device

Air/fuel ratio prior to combustion responsive means

123681, 701104, F02D 4118

Patent

active

061552429

ABSTRACT:
An air/fuel ratio control method for an internal combustion engine corrects airflow prediction errors. The method compares the current airflow to the value that was predicted several events in the past and creates an error signal. Based on this error signal, the current fueling is adjusted. These two mixtures, with equally offsetting lean and rich air/fuel ratios allow the catalytic converter to operate at peak efficiency despite prediction errors.

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