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: This method for measuring a flow rate of liquid at the outlet of a pump is noteworthy in that a gas accumulator of known volume is provided at the outlet of this pump, in that the gas or liquid pressure inside this accumulator is measured, in that the volume of gas inside this accumulator is deduced therefrom, then the volume of the liquid inside this accumulator, then the flow rate of this liquid at the outlet of this accumulator.

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 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: 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 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: An electronic circuit, including: a switching cell including a first switch, referred to as a “high-side” switch, and a second switch, referred to as a “low-side” switch, that are connected to one another by an intermediate wired link; a control module for controlling the switching cell, including a first, a second and a third connection terminal; the intermediate wired link including a fourth connection terminal and a fifth connection terminal; a second wired link configured to connect the second connection terminal and the fourth connection terminal; a third wired link that is separate from the second wired link and configured to connect the control capacitor between the third terminal and the fifth terminal.

Abstract: A method for measuring the injected mass of a fluid containing urea using a system for injecting the fluid into an exhaust system of a vehicle, in which injecting the fluid includes sequences of series of injections of fluid contained in an accumulator between sequences for starting the pump upon detection of a pressure below a threshold PON and sequences for stopping the pump upon detection of a pressure above a threshold POFF, the method particularly includes computing the injected mass using the complete circuit hydraulic stiffness, based on the hydraulic stiffness KD of the accumulator and the hydraulic stiffness KI of the remainder of the circuit, and includes comparing the computed injected mass with a setpoint injected mass.

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: 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: Various embodiments of the teachings herein include a method for determining a state parameter of an exhaust gas sensor with a sensor element and a heating device arranged in the sensor element for heating the sensor element. The heating device is electrically connected via a first electrical line and a second electrical line to a control device for electrically controlling the heating device. The heating device includes a measuring line electrically connected between the control device and the first electrical line for controlling the temperature-dependent resistance of the heating section. The method may include: determining a measurement voltage dropped between the first electrical line and the measuring line; determining a compensation voltage on the basis of a predetermined reference voltage and the determined measurement voltage; and determining the state parameter of the exhaust gas sensor by assigning the determined compensation voltage to the state parameter.

Abstract: Disclosed is a method for opening a door of a motor vehicle equipped with a device with two Doppler radars for detecting a predetermined movement of a part of the body of a user, the method including: for each radar, comparing the characteristic parameter with a predetermined shape including a predetermined number of peaks a characteristic value of which is higher than a predetermined persistence threshold; if the characteristic parameter has, for the first and second radars, the predetermined shape in a given interval of interest, and if, in the interval of interest, the first radar also sees a predetermined number of changes of phase between the in-phase component and the phase-offset component, then, the predetermined movement is detected and the door is opened, the door otherwise not being opened.

Abstract: An annular catalytic converter, having a first, tubular flow path, having a diverting region and having a second, annular flow path, wherein the tubular flow path is formed by an inner pipe, wherein the annular flow path is formed between the inner pipe and an outer pipe surrounding the inner pipe, and the diverting region is of pot-shaped form for the purposes of diverting the exhaust-gas flow from the tubular flow path into the annular flow path, wherein the inner pipe and/or the outer pipe has a conical cross section that widens or narrows along the flow direction of the exhaust gas.

Abstract: Various embodiments of the teachings herein include methods for determining the sulfur content in an exhaust tract of a motor vehicle. The method may include: determining a change in the nitrogen oxide abatement efficiency of a coated particulate filter arranged in the exhaust tract and/or a determined ammonia storage capacity change of a coated particulate filter arranged in the exhaust tract; comparing the determined change to a threshold value; identifying an excessive sulfur content if the comparison shows that the determined change exceeds the threshold value; and undertaking one or more corrective actions in response to identifying an excessive sulfur content.