Abstract: The disclosure relates to a fuel injector with a housing, a valve body, and an adjustment element. The body may have a central area, an end area, and a transition area, with a first outer diameter in the central area, and a second outer diameter in the end area smaller than the first diameter. The adjustment element may be in the transition area to align the fuel injector relative to the recess. In the transition area, an outer diameter of the valve body decreases in stepped fashion from the first diameter to the second diameter in a radially extending step. The adjustment element comprises a ring element through which the transition area extends with a radially extending upper surface which radially overlaps, contacts, and is coplanar to the step and a spherically shaped external surface in a cylinder head contact area.

Abstract: The present disclosure relates to fuel injectors. The teachings may be embodied in a method for characterizing a hydraulic coupling element. The fuel injector may have a piston to pressurize a hydraulic medium and a pin connecting the piston to a piezoactuator. The method may include applying a charging current to the piezo actuator low enough that the leakage flow prevents a pressure differential and the nozzle needle remains closed; discharging the piezo actuator with a current high enough to release the mechanical connection between the piston and the pin; detecting when the piston impacts on the pin; and characterizing the coupling element based on the time between discharge and impact.

Abstract: The invention relates to a method for calibrating a torque sensor which is arranged in the drivetrain of a motor vehicle. In order to specify a method for calibrating a torque sensor which is arranged in the drivetrain of a motor vehicle, which method is less complex and therefore more cost-effective, firstly the uncalibrated torque sensor is arranged in the fully completed drivetrain in the motor vehicle and subsequently a first known value for a torque is applied to the drivetrain of the motor vehicle and then a second known value for a torque is applied to the drivetrain of the motor vehicle and the first output signal which is generated by the torque sensor is assigned to the first known value for a torque and the second output signal which is generated by the torque sensor is assigned to the second known value for a torque, the torque sensor being calibrated in the fully completed drivetrain of the motor vehicle in this way.

Abstract: The invention relates to a valve for opening and closing a flow path, comprising a drive motor, comprising a valve disk, comprising a valve tappet and comprising a transmission device for converting rotational movement of the drive motor into translatory movement of the valve disk, wherein the valve disk is connected to the valve tappet and is able to be moved by way of movement of the valve tappet, wherein the transmission device is formed from flexible elements and at least one toothed segment which is mounted so as to be rotatable about an axis of rotation, wherein only tensile forces are able to be transmitted by the flexible elements, and wherein the toothed segment is able to be at least partially wrapped around by the flexible elements by way of rotational movement.

Abstract: The invention relates to a method and a device for actuating an injection valve, which has a piezo actuator and a nozzle needle, of a fuel injection system of an internal combustion engine, in which method a control unit, in a manner dependent on a setpoint stroke height of the piezo actuator in successive injection cycles, outputs a control signal for changing the actual stroke height of the piezo actuator, characterized in that the control unit changes the setpoint stroke height of the piezo actuator, for compensation of the temperature dependency of the capacitance of the piezo actuator, in a manner dependent on the temperature of said piezo actuator.

Abstract: A method and system for the distributed transmission of the communication flow, in which the communication flow takes place at least unidirectionally from a first to a second communication unit and wherein the first and second communication units are capable of transmitting the communication flow by means of at least two different communication paths, the communication flow comprises at least one vehicle-to-X message. The communication flow is divided into at least two communication flow elements by the first communication unit prior to sending, wherein the at least two communication flow elements are transmitted from the first to the second communication unit in a manner distributed over the at least two different communication paths, and wherein the at least two communication flow elements are assembled again by the second communication unit following reception.

Abstract: A method for mounting a rolling bearing arrangement onto a rotor and into the bearing housing of a turbocharger is provided. The method includes inserting a component, which is deformable under the exertion of pressure, into the intermediate space between two rolling bearings of the rotor assembly. The rotor assembly includes a rotor shaft, inner bearing rings which are fastened to the rotor shaft or integrated into the rotor shaft and which have a spacing to one another, rolling elements which are inserted into the inner bearing rings, and outer bearing rings which likewise have a spacing to one another. The method also includes deforming, by exertion of pressure, the component that has been inserted into the intermediate space between the two rolling bearings, to set a desired axial preload between the two rolling bearings.

Abstract: A method for heating the interior of a motor vehicle and a heating system are described. In the method, electrical energy stored or generated in the motor vehicle or electrical energy fed from an external energy source is fed to an electrothermal transducer and is converted there to thermal energy, which is supplied to a carrier medium for the thermal energy. An electrothermal transducer is used, which is temporarily operated at a higher heating power in the heating-up phase than in the subsequent continuous operation. In this way, the motor vehicle interior is heated up significantly quicker than in the known methods.

Abstract: The disclosure relates to a control method for controlling at least one injector valve in a fuel injection system of an internal combustion engine. An opening time of the injector valve is selected such that, in a fault situation in the fuel injection system, an opening time of the injector valve is situated in a pressure valley of a pressure oscillation prevailing in a high-pressure region of the fuel injection system.

Abstract: The invention relates to a method for determining an electrical resistance value for a fuel injector having a solenoid drive. The method comprises the following: (a) applying a voltage pulse to the solenoid drive of the fuel injector, (b) sensing a temporal progression of the current intensity of a current (I) flowing through the solenoid drive, (c) calculating a series of linked fluxes (?) as a function of current intensity (I), wherein each linked flux (?) is calculated on the basis of the temporal progression of voltage and current intensity (I) and on the basis of a hypothetical resistance value from a series of hypothetical resistance values, and (d) selecting one of the hypothetical resistance values as a determined resistance value on the basis of an analysis of the calculated series of linked fluxes (?). The invention further relates to a method for determining a temperature of a coil of a fuel injector having a solenoid drive, to a motor controller, and to a computer program.

Abstract: The disclosure relates to a rotor for a permanently excited electric machine. The rotor includes a holding pocket which is formed by a cutout of the rotor and which is designed to receive a permanent magnet. At least one flexible limb projects into the holding pocket of the rotor, and is designed to form an interference fit together with a circumferential boundary of the holding pocket and the permanent magnet arranged between the at least one flexible limb and the circumferential boundary.

Abstract: A method and device for detecting image artifacts. Pixel transition values of camera images are computed in a first direction by comparing intensity differences between neighboring pixels with an upper threshold and a lower threshold and setting a corresponding pixel transition value. A low pass filter with respect to time and a spatial filter are applied to the pixel transition values. Pixels of potential artifact regions are identified by comparing magnitude values of the smoothed pixel transition values with a predetermined detection threshold.

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 circuit carrier for holding at least one electrical power component is disclosed. The circuit carrier including a heat sink for holding and for cooling the power component. The heat sink having a surface. The circuit carrier includes a copper layer for mechanically connecting the heat sink to at least one copper plate, where the copper layer includes copper or a copper alloy and is cold-gas-sprayed or sintered on the surface of the heat sink. The circuit carrier also includes at least one copper plate for mechanically and electrically connecting the power component to the copper layer. The copper plate includes copper or a copper alloy and is arranged directly on a surface of the copper layer facing away from the heat sink and is areally, mechanically and electrically conductively connected to the copper layer.

Abstract: Embodiments relate to an operating method for operating a fuel injection system of an internal combustion engine, wherein, upon a detection of a fault in the fuel injection system, and wherein a predefined pressure is overshot in a high-pressure region of the fuel injection system, an overrun mode of the internal combustion engine is deactivated, such that the internal combustion engine is operated exclusively in an injection mode.

Abstract: The present invention relates to a device for air conditioning a motor vehicle, wherein the device comprises: an interface apparatus which is configured to make available an evaluation of a surrounding area of the motor vehicle in the form of climatic ambient data from outside the motor vehicle and to transfer the ambient data to a backend; an air conditioning apparatus which is configured to air condition at least part of a passenger compartment of the motor vehicle using a predetermined quantity of energy; and a control apparatus which is configured to determine an operating strategy for the air conditioning apparatus and to optimize the determined operating strategy on the basis of a profile, received from the backend of the climatic ambient data.

Abstract: A valve assembly for a fluid injector for an internal combustion engine includes a valve body with a valve recess, a central longitudinal axis, and a first axial end and a second axial end with respect to the central longitudinal axis. A valve needle is axially moveable within the valve recess with respect to the central longitudinal axis. In concurrence with a seal seat area the valve needle prevents a fluid flow through at least one flow hole in its closing position and otherwise enables it. Furthermore, the injector comprises a sac volume step adjacent to the seal seat area forming a part of an inner surface of a wall of the valve body and a sac volume being designed as one end of the valve recess and being limited by a further part of the inner surface of the wall of the valve body.

Abstract: A vehicle electrical system includes a first system branch with a first nominal voltage U1, a second system branch with a second nominal voltage U2, at least one DC/DC converter configured to transmit energy between the first and second system branches, a first actuating unit to actuate the DC/DC converter(s), a first detection unit to detect an instantaneous voltage Uact,1 of the first system branch, and a comparison unit to compare the detected instantaneous voltage Uact,1 to a first upper voltage threshold value Uo,1 and to a first lower voltage threshold value Uu,1, wherein Uu,1<U1<Uo,1. The first actuating unit actuates the DC/DC converter(s) such that energy is transmitted from the first system branch to the second system branch if Uact,1>Uo,1, and such that energy is transmitted from the second system branch to the first system branch if Uact,1<Uu,1.

Abstract: An air-cooled electric motor having a parallel circuit of two fan wheels is discloses. The electric motor includes a belt tensioner attached on a fixed bearing side of the electric motor, an inverter housing arranged on a floating bearing side of the electric motor, and a fan system having a first fan wheel on the floating bearing side and a second fan wheel on the fixed bearing side. The first fan wheel suctions a cooling air volume flow from the environment radially inward and blows a first part of the suctioned air volume flow radially outward via a stator winding head on the floating bearing side, from the electric motor back into the environment. The second fan wheel suctions a second part of the air volume flow and blows it radially outward via a stator winding head on the fixed bearing side, from the electric motor back into the environment.

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.