Abstract: A method for monitoring pollutant emissions during the operation of a combustion engine and/or an exhaust-aftertreatment device in a motor vehicle includes determining one or more pollutant-limit values for one or more pollutant categories using an emission limit-value model and as a function of one or more operating-state variables of the motor vehicle; ascertaining a pollutant-concentration variable for each pollutant category using sensors; and detecting an error in the form of an exceeding of the one or the plurality of pollutant-limit vales as a function of the pollutant-concentration variable for each pollutant category.

Abstract: A method for monitoring pollutant emissions during the operation of a combustion engine and/or an exhaust-aftertreatment device in a motor vehicle includes determining one or more pollutant-limit values for one or more pollutant categories using an emission limit-value model and as a function of one or more operating-state variables of the motor vehicle; ascertaining a pollutant-concentration variable for each pollutant category using sensors; and detecting an error in the form of an exceeding of the one or the plurality of pollutant-limit vales as a function of the pollutant-concentration variable for each pollutant category.

Abstract: Described is a method for operating an internal combustion engine (1), in which method at least one parameter of the exhaust gas flowing in an exhaust-gas duct (10) is detected by at least one exhaust-gas probe (30; 32), wherein the internal combustion engine (1) is at least temporarily turned over by a starting device (3), during which an injection and combustion of fuel does not take place, and during and/or after which the exhaust-gas probe (30; 32) is adjusted.

Abstract: Described is a method for operating an internal combustion engine (1), in which method at least one parameter of the exhaust gas flowing in an exhaust-gas duct (10) is detected by at least one exhaust-gas probe (30; 32), wherein the internal combustion engine (1) is at least temporarily turned over by a starting device (3), during which an injection and combustion of fuel does not take place, and during and/or after which the exhaust-gas probe (30; 32) is adjusted.

Abstract: The invention relates to a method for rotational position determination of an internal combustion engine having a camshaft to which a camshaft sensor is assigned and having a crankshaft to which a crankshaft rotational position transducer is assigned. A control apparatus for controlling the engine includes at least one configurable control apparatus input. After detecting a fault function of the crankshaft rotational position transducer, the control apparatus input of the control apparatus switches to the evaluation of one of the flanks (9.1, 10.1, 11.1, 12.1; 9.2, 10.2, 11.2, 12.2) or of all flanks (9.1, 10.1, 11.1, 12.1; 9.2, 10.2, 11.2, 12.2) of pulse segments (A, C, E, G). Thereafter, an injection of fuel takes place into the cylinders of the engine until an rpm gradient is detected which makes possible a position determination of the rotational position of the crankshaft of the engine.