Robert Boschgmbh

Bernhard Ebinger

Eberhard Schnaibel

Lutz Reuschenbach

Nikolaus Benninger

Rudi Mayer

Dieter A Schuler

Thomas Golzer

Peter-Juergen Schmidt

Electronic control system for fuel metering in an internal combustion

An electronic system for controlling the fuel injection of an internal-combustion engine based on the load, rotational speed, and temperature, as well as at least an oxygen probe reading in the exhaust pipe. The system determines basic injection-quantity signal as well as a transition-compensation signal to adapt the injection fuel quantity in situations of acceleration and deceleration. The system stores an engine characteristics map for a wall-film-quantity signal, and dividing factors for acceleration and deceleration. The system generates a correction value (Wkor) for the wall-film quantity signal and correction factors (FWS1kor, FWS2kor) for the two dividing factors. Three methods are provided for changing the correction factors in connection with the adaptation and these are based on a direct calculation, based on an estimation of the missing quantity and incremental calculation, and based on an incremental adjustment based on the evaluation of the oxygen-probe voltage.

Electronic system for controlling the fuel injection of an

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Stuttgart, Germany

Bernhard Ebinger