Engine air/fuel control with exhaust gas oxygen sensor heater co

Details Engine air/fuel control with exhaust gas oxygen sensor heater co Engine air/fuel control with exhaust gas oxygen sensor heater co

1995-11-02

1996-12-31

Nelli, Raymond A.

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

F02P 1508

Patent

active

055884172

ABSTRACT:
An engine air/fuel control system responsive to an electrically heated exhaust gas oxygen sensor. Electrical power is supplied to the sensor by a feedback control system responsive to peak-to-peak measurement in the sensor output. Peak-to-peak measurements are averaged over a predetermined number of sample times and the resulting average value compared to a deadband. When the average measurement is above, within, or below the deadband, electrical power to the heater is, respectively, reduced, held constant, or decreased.

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Bosch Technical Bulletin 6(1978)3 entitled "Regulation Of The Mixture Composition for Injection OHO Engines By Means Of LAMDBA Sensor".

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