Abstract: A method for detecting a special operating state of a motor vehicle which differs from a normal operating state of the motor vehicle, in which a noise emitted by the motor vehicle during operation of the motor vehicle is captured in the interior of the motor vehicle using a mobile apparatus which is separate from the motor vehicle, and the noise is compared with a plurality of reference noises provided by the mobile apparatus, the noise being assigned to a most similar reference noise of the plurality of reference noises on the basis of the comparison if a minimum similarity value is exceeded, and the special operating state being detected by the assignment which has been carried out.

Abstract: The disclosure relates to a method for leakage diagnosis. The method includes influencing the introduction of gas along a crankcase aeration line into a crankcase of an internal combustion engine and acquiring a measurement signal profile by an exhaust-gas sensor arranged in an exhaust-gas tract of an internal combustion engine. The measurement signal profile is characteristic of at least one exhaust-gas property of the exhaust gas. The method includes providing an expected measurement signal profile which is characteristic of the exhaust-gas property of the exhaust gas in the exhaust-gas tract based on the influence on the introduction of gas into the crankcase. Additionally, the method includes comparing the acquired measurement signal profile with the expected measurement signal profile and identifying that the crankcase ventilation line has a leak if, during the comparison, the acquired measurement signal profile deviates from the expected measurement signal profile by a predetermined threshold value.

Abstract: A method for detecting a special operating state of a motor vehicle which differs from a normal operating state of the motor vehicle, in which a noise emitted by the motor vehicle during operation of the motor vehicle is captured in the interior of the motor vehicle using a mobile apparatus which is separate from the motor vehicle, and the noise is compared with a plurality of reference noises provided by the mobile apparatus, the noise being assigned to a most similar reference noise of the plurality of reference noises on the basis of the comparison if a minimum similarity value is exceeded, and the special operating state being detected by the assignment which has been carried out.

Abstract: A method and a device for controlling the drive of a motor vehicle having an internal combustion engine (ICE) have a control device to which operating parameters of the drive and parameters influencing the driving operation of the motor vehicle are supplied. On the basis of these parameters the control device enables or terminates the implementation of fuel consumption reduction measures (STST) if specific parameter constellations are present. During the operation of the vehicle the number and/or the duration the possible fuel consumption reduction measures and fuel consumption reduction measures actually carried out are/is determined and the number and/or the duration of the possible fuel consumption reduction measures and the number and/or the duration of the fuel consumption reduction measures actually carried out are/is correlated. From this, a variable (R) is determined which represents a measure for the implementation of the possible fuel consumption reduction measures.

Abstract: During a first driving cycle, a combustion process is controlled in at least one combustion chamber for the purpose of performing a check on an emission reduction system of an internal combustion engine. During a second driving cycle following the first cycle, a check is performed to establish whether an error in the emission reduction system was detected during the first cycle. An idle time between the first and the second cycles is determined, in the event of an error of the emission reduction system detected during the first cycle. During the second cycle, the combustion process in the at least one combustion chamber is only controlled for the purpose of the check on the emission reduction system, in the event of an error detected in the emission reduction system during the first cycle and in the event of the idle time being longer than a pre-determined repair time.

Abstract: During a first driving cycle, a combustion process is controlled in at least one combustion chamber for the purpose of performing a check on an emission reduction system of an internal combustion engine. During a second driving cycle following the first cycle, a check is performed to establish whether an error in the emission reduction system was detected during the first cycle. An idle time between the first and the second cycles is determined, in the event of an error of the emission reduction system detected during the first cycle. During the second cycle, the combustion process in the at least one combustion chamber is only controlled for the purpose of the check on the emission reduction system, in the event of an error detected in the emission reduction system during the first cycle and in the event of the idle time being longer than a pre-determined repair time.

Abstract: A method and device for determining a correction value for a measured segment time, which a shaft of an internal combustion engine, in particular a crankshaft, needs in order to rotate about a defined angular range, evaluate the following relationship in order to determine correction values for individual cylinders: AZn=[(TGn?TG0)?(n/z)*(TG0??TG0)]/[TG0+(n/z)*(TG0??TG0)], where z is the number of cylinders of the internal combustion engine, n is the number of the cylinder currently under consideration, TGn is the measured segment time of the cylinder with the number n, TG0 is the measured segment time of a reference segment of a reference cylinder, TG0? is the segment time of the reference segment of the reference cylinder measured two crankshaft rotations after the segment time TG0, and AZn is a correction value for the segment time of the cylinder with the number n.

Abstract: A method and device for determining a correction value for a measured segment time, which a shaft of an internal combustion engine, in particular a crankshaft, needs in order to rotate about a defined angular range, evaluate the following relationship in order to determine correction values for individual cylinders: AZn=[(TGn?TG0)?(n/z)*(TG0??TG0)]/[TG0+(n/z)*(TG0??TG0)], where z is the number of cylinders of the internal combustion engine, n is the number of the cylinder currently under consideration, TGn is the measured segment time of the cylinder with the number n, TG0 is the measured segment time of a reference segment of a reference cylinder, TG0? is the segment time of the reference segment of the reference cylinder measured two crankshaft rotations after the segment time TG0, and AZn is a correction value for the segment time of the cylinder with the number n.