METHOD OF DETERMINING CONTENT OF ETHANOL IN FUEL USING AN OXYGEN SENSOR (EMBODIMENTS) Russian patent published in 2019 - IPC F02D19/08 F02D41/14 G01M15/10 F02D41/24 

FIELD: internal combustion engines.

SUBSTANCE: disclosed are methods for accurate determination of variability of readings of oxygen content sensor in inlet air or sensor of oxygen content in exhaust gases. Methods include actuation of oxygen sensor at lower reference voltage, at which water molecules are not dissociated, for generation of first output signal and at higher reference voltage, in which water molecules are completely dissociated to generate a second output signal and finding a correction factor for the sensor on the first and second output signals. Obtained correction coefficient is used to control the transfer function of the alcohol content in order to increase the accuracy of estimating the content of ethanol in the combustible fuel, which improves operational characteristics of the engine owing to improved adjustment of its operating parameters.

EFFECT: invention can be used in fuel management systems for internal combustion engines.

20 cl, 6 dwg