Abstract: A discharge process of an intermediate circuit capacitor in two stages using two different circuits is proposed. A discharge circuit is used (which is also used for pre-charging), includes a first changeover switch used to choose between directly linking the intermediate circuit capacitor to a first DC voltage terminal and linking further pre-charge/discharge components used to discharge the intermediate circuit capacitor. These components include a second changeover switch used to select between pre-charging and discharging, allowing a selection to pre-charge the intermediate circuit capacitor with a limited current or to discharge it. A DC voltage converter is also attached to the intermediate circuit capacitor. In a first discharge phase, the DC voltage converter is operated for discharging purposes to only produce a power loss in the form of heat but does not produce a power transfer. The subsequent second discharge phase provides a discharge by way of the discharge circuit.

Abstract: A device and a method for detecting living objects for inductive charging devices, the inductive charging device having a resonator coil, which is configured to generate an electromagnetic field, and a plurality of living object sensors, which are configured to detect a living object. The method has steps for determining a critical magnetic field limit of the electromagnetic field by magnetic field limit sensors, the critical magnetic field limit being defined in that a magnetic field strength outside the critical magnetic field limit falls below a limit value; and for detecting a living object within the determined, critical magnetic field limit of the electromagnetic field by the living object sensors.

Abstract: Various embodiments include a method for actuating a piezo actuator of an injection valve of a fuel injection system comprising: determining actuation signals for the piezo actuator using a stored current/voltage characteristic curve for carrying out an injection process; detecting the profile of the current flowing through the piezo actuator during the injection process and the profile of the voltage applied to the piezo actuator during the injection process; adapting the stored current/voltage characteristic curve based at least in part on the detected current profile and the detected voltage profile; and determining actuation signals for the piezo actuator using the stored, adapted current/voltage characteristic curve for carrying out a subsequent injection process.

Abstract: A device and a method for detecting living objects for inductive charging devices, the inductive charging device having a resonator coil, which is configured to generate an electromagnetic field, and a plurality of living object sensors, which are configured to detect a living object. The method has steps for determining a critical magnetic field limit of the electromagnetic field by magnetic field limit sensors, the critical magnetic field limit being defined in that a magnetic field strength outside the critical magnetic field limit falls below a limit value; and for detecting a living object within the determined, critical magnetic field limit of the electromagnetic field by the living object sensors.

Abstract: Various embodiments includes a method for determining energization data for an actuator of an injection valve of a motor vehicle comprising: receiving input data at a control unit; and determining the energization data based on the received input data into account with the control unit. Determining the energization data includes using a polynomial regression model.

Abstract: A method for identifying faulty components of a fuel injection system is disclosed, wherein a secondary injection is performed individually by each injector during a test routine, after the secondary injection several predefined parameters of the fuel injection system are determined, and a combined assessment of the determined parameters is used to draw conclusions about whether or not components of the fuel injection system are faulty.

Abstract: Various embodiments include a method for actuating a piezo actuator of an injection valve of a fuel injection system comprising: determining actuation signals for the piezo actuator using a stored current/voltage characteristic curve for carrying out an injection process; detecting the profile of the current flowing through the piezo actuator during the injection process and the profile of the voltage applied to the piezo actuator during the injection process; adapting the stored current/voltage characteristic curve based at least in part on the detected current profile and the detected voltage profile; and determining actuation signals for the piezo actuator using the stored, adapted current/voltage characteristic curve for carrying out a subsequent injection process.

Abstract: Various embodiments includes a method for determining energization data for an actuator of an injection valve of a motor vehicle comprising: receiving input data at a control unit; and determining the energization data based on the received input data into account with the control unit. Determining the energization data includes using a polynomial regression model.

Abstract: A piezo-driven fuel injector is modeled by measuring the actuation current and the actuation voltage of the piezo injector, transforming the actuation current and the actuation voltage into the frequency domain, forming a complex conductance from the actuation current transformed into the frequency domain and the actuation voltage transformed into the frequency domain, and determining one or more parameters of the piezo injector from the complex conductance. Once the complex conductance is determined it is used to detect a fault in the piezo injector.

Abstract: A method for identifying faulty components of a fuel injection system is disclosed, wherein a secondary injection is performed individually by each injector during a test routine, after the secondary injection several predefined parameters of the fuel injection system are determined, and a combined assessment of the determined parameters is used to draw conclusions about whether or not components of the fuel injection system are faulty.