Internal-combustion engines – Charge forming device – Including exhaust gas condition responsive means
Patent
1995-10-02
1996-10-22
Wolfe, Willis R.
Internal-combustion engines
Charge forming device
Including exhaust gas condition responsive means
123696, F02D 4114
Patent
active
055666620
ABSTRACT:
An engine air/fuel control system is disclosed having one feedback correction loop generating a feedback variable by essentially integrating the output of an exhaust gas oxygen sensor. A second feedback loop adaptively learns a feedback correction from the difference between the feedback variable and its desired value such as unity. A range of authority for the total air/fuel controller is adaptively learned from the learned correction value to maximize the correction which may be applied by the feedback variable under all operating conditions.
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Ford Motor Company
Lippa Allan J.
Wolfe Willis R.
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