Patent ID: 7762244

Claim:
A device for adapting the acquisition of a measurement signal of an exhaust probe associated with an internal combustion engine where the internal combustion engine has a plurality of cylinders and fuel-metering injection valves assigned to the cylinders and the exhaust probe is disposed in an exhaust tract of the engine and the exhaust probe measurement signal is characteristic of the air/fuel ratio in the respective cylinder, comprising: a measurement acquisition device that acquires the measurement signal at a predefined crankshaft angle relative to a reference position of a piston of the respective cylinder and is assigned to the particular cylinder of the engine; a controller that generates a manipulated variable for influencing the air/fuel ratio in the respective cylinder of the engine as a function of the measurement signal acquired for the respective cylinder; and an adaptation device that adapts the predefined crankshaft angle as a function of a performance index based on uneven running of a drive shaft of the internal combustion engine.