Abstract: Method for detecting a signal, particularly a voltage, for example a battery voltage, having the following steps: measuring the signal and/or the battery voltage at a predefined sampling rate, storing the measured measurement values in a buffer memory, and forming a median value of the stored measurement values in a time-slot pattern slower than the sampling rate to obtain an averaged value.

Abstract: A method for detecting a malfunction of a sensor measuring a measured quantity is provided, in which a signal-range check for the output signal of the sensor is performed, provided that the measured quantity is within a permissible range. If the measured quantity is outside the permissible range, no signal-range check is performed, but the output signal is used for detecting the measured quantity and for further calculations. The sensor may be, for example, a hot-film air-mass meter. If this is the case, the measured quantity is the drawn-in air mass, and the signal-range check is performed, provided that the engine operating state and thus the drawn-in air satisfies specifiable conditions. In addition to the signal-range check, onboard diagnoses with regard to specifiable plausibility criteria relating to the offset-drift and/or the sensitivity-drift of the sensor may also be performed.

Abstract: Method for detecting a signal, particularly a voltage, for example a battery voltage, having the following steps:

Abstract: A method and a device is described for controlling an internal combustion engine using fuel metering. The fuel metering is divisible into at least a first partial injection and a second partial injection. In the second partial injection, a fuel quantity variable, characterizing the fuel quantity injected in the second partial injection, is corrected on the basis of at least one pressure variable, characterizing the fuel pressure, as well as of the fuel quantity variable and at least one further variable.

Abstract: A method for compensation of phase delays that occur in discrete sampling of an analog output signal (US) has the steps of subjecting the output signal (US) to signal processing by an anti-aliasing filter and then by a sampling member to obtain a sampling signal (UA) that has a sampling period (T), compensating a phase delay of the sampling signal caused by the sampling member, taking into account the sampling signal of a preceding sampling period to obtain a signal (UF,K), and compensating of the phase delay of the sampling signal caused by the anti-aliasing filter, taking into account a filter time constant (TF) of the anti-aliasing filter, a sampling period (TA) of the sampling member, and the sampling signal of the preceding sampling period, to obtain a signal (USK).

Abstract: A method for detecting a malfunction of a sensor measuring a measured quantity is provided, in which a signal-range check for the output signal of the sensor is performed, provided that the measured quantity is within a permissible range. If the measured quantity is outside the permissible range, no signal-range check is performed, but the output signal is used for detecting the measured quantity and for further calculations. The sensor may be, for example, a hot-film air-mass meter. If this is the case, the measured quantity is the drawn-in air mass, and the signal-range check is performed, provided that the engine operating state and thus the drawn-in air satisfies specifiable conditions. In addition to the signal-range check, onboard diagnoses with regard to specifiable plausibility criteria relating to the offset-drift and/or the sensitivity-drift of the sensor may also be performed.

Abstract: A method and a device are described for controlling an internal combustion engine. The fuel metering is divisible into at least a first partial injection and a second partial injection. In the second partial injection, a fuel quantity variable, characterizing the fuel quantity injected in the second partial injection, is corrected on the basis of at least one pressure variable, characterizing the fuel pressure, as well as of the fuel quantity variable and at least one further variable.