Abstract: Various teachings of the present disclosure include a method for operating an electric motor of rotor-stator-rotor configuration and a first gap with a first thickness d1 between a first rotor and a stator and a second gap with a second thickness d2 between the stator and a second rotor, wherein the first rotor and the second rotor are electrically excitable separately from each other. An example includes: detecting a first open-circuit voltage of the first rotor; detecting a second open-circuit voltage of the second rotor; classifying the first open-circuit voltage and the second open-circuit voltage; and adjusting the electrical excitation of at least one from amongst the first rotor and the second rotor based on at least one of the classified open-circuit voltages.

Abstract: An electrically heatable catalytic converter with a metal honeycomb body, the honeycomb body being formed by a plurality of wound metal foils and the honeycomb body being received in a casing tube, a device for electrically contacting at least individual foils being led into the casing tube through an opening in the casing tube, the device being formed by an electrode which is electrically insulated from the inside of the casing tube by a connecting layer and mechanically connected to the casing tube.

Abstract: Various embodiments of the teachings herein include a system for a vehicle having a vehicle body and a vehicle door held pivotably on the vehicle body. An example system includes: an anti-trap protection device to detect a trapping event occurring between the vehicle door and the vehicle body; and an obstacle identification system to detect a collision event occurring between the vehicle door and an object in surroundings of the vehicle. At least one sensor operates both for detection of the trapping event and for detection of the collision event.

Abstract: A thermal management system having a battery and an electric motor, the temperature of both of which is to be controlled, wherein the electric motor is oil-cooled. The thermal management system has a monitoring system for monitoring an oil flow generated by an oil pump, in an oil cooling circuit including the electric motor. The monitoring system in this case has a first pressure sensor at a first point of the oil cooling circuit and a second pressure sensor at a second point of the oil cooling circuit and/or a speed sensor assigned to the oil pump. Also proposed is a vehicle having a thermal management system of this type.

Abstract: A high-voltage vehicle on-board electrical system is equipped with a ground potential and a high-voltage potential that is insulated from the ground potential by a two-stage insulation. The two-stage insulation has a first insulation device that insulates the high-voltage potential from a potential island. A second insulation device of the two-stage insulation insulates the potential island from the ground potential. The potential island is connected to the ground potential via a dissipating element. The dissipating element is configured, in the event of an insulation fault in the two-stage insulation, to generate a current that is below a hazard threshold and that is above a sensitivity threshold of an insulation monitor.

Abstract: A method and a device for ascertaining a fluid injection quantity of an injection system. The injection system includes a high-pressure pump, a high-pressure region that adjoins the high-pressure pump, a pressure sensor, and an injector that is fed from the high-pressure region. The method includes detecting a measurement signal using the pressure sensor and segmenting a first pressure profile from the measurement signal. The first pressure profile characterizes the pressure profile prior to a fluid injection using the injector. The method also includes segmenting a second pressure profile from the measurement signal. The second pressure profile characterizes the pressure profile after the fluid injection using the injector. The method also includes performing a kernel density estimation using the first pressure profile and the second pressure profile, ascertaining a pressure difference, and ascertaining the fluid injection quantity using the pressure difference.

Abstract: In a device for the aftertreatment of exhaust gases from an emission source, in particular an internal combustion engine, with an exhaust tract through which an exhaust gas can flow in a direction of flow, with at least one catalytic converter, the catalytic converter having a ceramic honeycomb body has: a catalytically active surface coating, and with an electrically heatable heater, the heater having a metallic electrical conductor, the honeycomb body further having a plurality of flow channels which can be flowed through from a gas inlet side to a gas outlet side, wherein the conductor is integrated in the ceramic honeycomb body, and is arranged downstream of the gas inlet side and upstream of the gas outlet side, as viewed in the direction of flow.

Abstract: A fuel cell stack bipolar plate, includes two half-plates connected to one another and a flow space formed between the half-plates for distributing a coolant flowing into the flow space through an inlet hole of the bipolar plate, located on a first edge of the bipolar plate, and flows out of the flow space through an outlet hole of the bipolar plate, located on an opposite second edge of the bipolar plate, over the area of the bipolar plate's flow field. The flow field debouches at its ends facing toward the first and second edges of the bipolar plate into a distribution region connected to the respective hole. The distribution region includes a pre-distributing channel, which debouches into the respective hole, extends along a direction of the first and second edges of the bipolar plate and has a plurality of throttle apertures arranged distributed and face toward the flow field.

Abstract: Various embodiments of the teachings herein include a busbar connection assembly. An example includes: a carrier; an insert disposed within the carrier, the insert having an aperture; a busbar connected to and extending through the aperture; and a seal element in contact with the busbar and the insert. The seal element prevents flow between a first side of the carrier and a second side of the carrier.

Abstract: A method for producing a stator assembly of an electric motor includes: providing a laminated core of the stator assembly; mounting at least one coil former on the laminated core; mounting a ground contact pin on the laminated core provided with the coil former; and overmolding the laminated core with plastic.

Abstract: A fluid valve, in particular for a motor vehicle and/or a temperature control system, having a housing and a valve body disposed in the housing so as to be rotatable about a rotation axis. The housing has a first port and a third port disposed on opposite side of a normal plane in relation to the rotation axis and a second port which is radially spaced apart from the rotation axis and in the direction of the rotation axis is disposed between the first and the third port. The valve body in at least one rotary position connects at least two ports of the housing to one another, and in at least one other rotary position does not connect the two ports to one another.

Abstract: The invention relates to a method for operating an internal combustion engine, in which the internal combustion engine has at least one first combustion chamber, in which combustion processes take place during fired operation of the first combustion chamber, at least one second combustion chamber, in which combustion processes take place during a fired operation of the second combustion chamber, a first knock sensor assigned to the first combustion chamber, by means of which irregular combustions in the first combustion chamber can be detected, and a second knock sensor assigned to the second combustion chamber, by means of which irregular combustions in the second combustion chamber can be detected. The internal combustion engine is operated in a first operating state in which channel switching is carried out. A switch is made from the first operating state to a second operating state in which channel switching does not take place.

Abstract: A fuse circuit assembly has a first supply path and a second supply path. The first supply path includes a first supply-connection node, a first load-connection node for connecting a safety-relevant load, a first fuse node, a first electrical fuse and a second electrical fuse. The first electrical fuse is arranged between the first supply-connection node and the first fuse node. The second electrical fuse is arranged between the first fuse node and the first load-connection node. The second supply path includes a second supply-connection node, a second load-connection node for connecting the safety-relevant load, and a third electrical fuse which is arranged in a third connection between the second supply-connection node and the second load-connection node. The first fuse node is connected to the second supply-connection node via a fourth electrical fuse.

Abstract: Various embodiments include a method for monitoring the ventilation of a crankcase of an internal combustion engine with combustion chambers and a nitrogen oxide sensor arranged in an exhaust system, the sensor configured to detect an amount of nitrogen oxide in exhaust gas of the internal combustion engine. An example method includes: determining a predefined operating mode of the internal combustion engine defined by substantially no combustion of an air/fuel mixture taking place inside the combustion chambers; determining an amount of nitrogen oxide in the exhaust gas during the predefined operating mode of the internal combustion engine using the exhaust gas sensor; and identifying functional ventilation of the crankcase if the detected nitrogen oxide level exceeds a predefined nitrogen oxide threshold or identifying a malfunction if the detected nitrogen oxide level is below the predefined nitrogen oxide threshold.

Abstract: A method and a device for performing diagnostics on an exhaust gas sensor includes a series circuit of a Nernst cell and a first other cell. The exhaust gas sensor has a first, a second, and a third connection where a voltage drop can be measured between the first connection and the second connection by the Nernst cell and a voltage drop between the second connection and the third connection can be measured by the first other cell. The diagnostic method has steps for feeding a direct or alternating current into the first, second, and third connections; for directly or indirectly sensing an electrical voltage potential at at least one of the first, second, and third connections; and for evaluating the voltage potential sensed to diagnose a short circuit or an open circuit in the Nernst cell and/or in the first other cell.

Abstract: Various embodiments of the teachings herein include a method for noise reduction during operation of an electric motor. The method may include: determining an instantaneous rotational frequency of the electric motor from a signal representing a rotational position and/or a rotational speed of the electric motor; filtering a frequency component from the signal, the frequency component corresponding to the instantaneous rotational frequency of the electric motor multiplied by a specified factor greater than 1 and lying within a specified acoustic frequency range; and generating a correction signal based on the filtered signal and feeding this correction signal into the control loop so an amplitude of the interference signal is reduced.

Abstract: A circuit board assembly, which includes an insert, a printed circuit board (PCB), the insert connected to the PCB, at least one semiconductor device, a primary connection between the insert and the semiconductor device, and a secondary connection between the insert and the semiconductor device. The secondary connection provides electrical and thermal communication between the semiconductor device and the insert when the primary connection fails. The primary connection between the insert and the semiconductor device is a sintered connection. The insert and the semiconductor device are in electrical and thermal communication with one another through the sintered connection. The sintered connection includes a sintering compound which connects the insert and the semiconductor device. The secondary connection includes a limp-home function if the primary connection fails.

Abstract: A thermal management system for use in a vehicle in which the coolant flows of the two cooling circuits can be mixed with each other as needed by a multi-way valve at an interface between a first cooling circuit for a battery and a second cooling circuit for an electric motor for driving the vehicle. A vehicle with such a thermal management system is also proposed, as well as a method for operating two cooling circuits of such a thermal management system.

Abstract: Some embodiments of the teachings herein include methods for operating an exhaust gas sensor with a pump electrode, a measuring electrode, and a reference electrode. An example includes: discharging oxygen from the measuring cavity by applying a measurement current to the measuring electrode so a measurement voltage between the measuring electrode and the reference electrode is kept at a predetermined first setpoint value; discharging oxygen from the pump cavity by applying a pump current to the pump electrode so an electrode voltage between the pump electrode and the reference electrode is kept at a predetermined second setpoint value; determining a nitrogen oxide value based at least in part on a value of the measurement current; adapting the first setpoint value for the measurement voltage based on the determined nitrogen oxide value; and/or adapting the second setpoint value for the electrode voltage based on the determined nitrogen oxide value.

Abstract: The disclosure relates to a method for determining a size of a leak in a fuel tank system. The method includes: starting an internal combustion engine; calculating a stoppage time for a vehicle and/or a temperature difference between the fuel in the fuel tank system and the environment; and checking whether at least one of a plurality of diagnostic conditions is fulfilled. A first diagnostic condition is fulfilled when the stoppage time is longer than a predetermined minimum stoppage time. A second diagnostic condition is fulfilled when the temperature difference is smaller than a predetermined maximum temperature difference. Additionally, when at least one of the plurality of diagnostic conditions is fulfilled, the method includes: evacuating the fuel tank system; recording a time profile of the pressure in the fuel tank system; and determining the size of a leak based on the recorded time profile of the pressure.