Internal-combustion engines – Charge forming device – Including exhaust gas condition responsive means
Patent
1994-02-25
1995-04-25
Nelli, Raymond A.
Internal-combustion engines
Charge forming device
Including exhaust gas condition responsive means
F02D 4114
Patent
active
054089808
ABSTRACT:
An engine air/fuel control system includes an apparatus and method for adaptively setting an initialization period preceding closed loop fuel control. During the initialization period, fuel delivered to the engine is modulated by a periodic waveform. A high voltage signal associated with the high output state of an exhaust gas oxygen sensor and a low voltage signal associated with the low voltage state of the exhaust gas oxygen sensor are sampled. When the difference between these signals exceeds a preselected value, the initialization period is terminated and closed loop fuel control is actuated.
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Regelung der Gemischzusammensetzung bei Einspritz-ottomotoren mit Hilfe der Lambda-Sonde, Bosch Techn. Berichte 6 (1978).
Doering Jeffrey A.
Falandino Michael P.
Kotwicki Allan J.
Ford Motor Company
Lippa Allan J.
May Roger L.
Nelli Raymond A.
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