FIELD: machine building.
SUBSTANCE: in one example, the method can provide an indication of deterioration of the oxygen content sensor in the supply air based on a first time constant related to the output signal of the oxygen sensor in the supply air, and a second time constant related to the output signal of the throttle input pressure sensor. Method may additionally envisage control of the exhaust gas recirculation flow (EGR) based on the output signal of the oxygen content sensor in the supply air and the output signal of the pressure sensor at the inlet of the throttle when the state of the oxygen sensor in the supply air is not deteriorated.
EFFECT: invention discloses methods and systems for diagnosing an oxygen content sensor in pressurized air by pressure.
20 cl, 4 dwg
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