METHOD AND DEVICE FOR THE CALIBRATION OF AN EXHAUST GAS PROBE, AND METHOD AND DEVICE FOR THE OPERATION OF AN INTERNAL COMBUSTION ENGINE

摘要

According to the invention, a plateau phase of a test signal of an exhaust gas probe located in a catalytic converter is detected following a jump from a preset rich air/fuel ratio in a combustion chamber of one cylinder of an internal combustion chamber to a preset lean air/fuel ratio, said plateau phase being obtained following the jump, and the duration (T_PL_L) of said plateau phase is determined as a storage period. A plateau phase (PL) of the test signal (MS1), which is obtained following a jump from a preset lean air/fuel ratio in the combustion chamber of the respective cylinder to a preset rich air/fuel ratio, is detected following said jump, and the duration of the plateau phase is determined as an evacuation period (T_PL_R). An allocation rule for assigning the test signal to a detected air/fuel ratio (LAMB_AV) is adjusted in accordance with the storage period (T_PL_L) and the evacuation period (T_PL_R). In order to calibrate the exhaust gas probe, the allocation rule is adapted in accordance with a plateau value (PL_V) of the test signal (MS1) during the plateau phase (PL).