Abstract: A method for operating an exhaust gas aftertreatment system of an internal combustion engine and an exhaust gas aftertreatment system are described. The internal combustion engine has a turbine wheel, which is arranged in the exhaust gas line, of an exhaust gas turbocharger, and a bypass line which bypasses the turbine wheel and in which a three-way pre-catalytic converter is arranged. A three-way main catalytic converter is situated in the exhaust gas line. A NOx sensor is provided which measures the NOx fraction in the exhaust gas downstream of the three-way pre-catalytic converter. If the measured NOx fraction exceeds a threshold value, the three-way pre-catalytic converter is diagnosed as faulty.

Abstract: A method for determining a temperature of a diaphragm of a pump, the pump pumping a fluid out of a tank to a dispersion point by way of a movement of the diaphragm, the pump being fastened to the tank, the temperature of the diaphragm being estimated in a manner which is at least dependent on the temperature of the fluid in the tank.

Abstract: A rotor for an electrical machine has at least one laminated core with a multiplicity of magnet pockets arranged in succession in an axial direction of the rotor. There are magnets fixed by a cured potting compound within the magnet pockets. The magnet pockets are fluidically connected to one another via at least one distributor system formed in the laminated core which has, at least one filling channel for each pocket fluidically connected to the respective pockets. The distributor system has at least one distributor channel common to and fluidically connected to the filling channels. The cured potting compound extends continuously through the distributor system from magnet pocket to magnet pocket.

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: A fuel pressure regulator and fuel filter assembly includes: a housing, having a connecting end having a fuel channel; a filter element, located in an accommodating cavity of the housing; a cover plate, located at a second end of the housing; a rear cover, having one end being an opening end and another end being a spring seat, and a sidewall, the opening end being connected to the housing; a spring, a first end thereof being pressed against the spring seat; a seal arranged in the rear cover, a second end of the spring being pressed against the seal; and a fixing ring that fixes the rear cover to the connecting end of the housing, the fixing ring being welded by laser to the connecting end. When fuel pressure is no greater than a spring preload, the seal closes the fuel channel.

Abstract: A method for electrically connecting a wire element of a stator with a carrier element. The invention is characterized in that the wire element and the stator are covered by an overmolding, wherein at least one cavity is drilled through the overmolding and through the wire element of the stator such that the wire element is at least partially disrupted in at least one predetermined section. The carrier element is positioned on the overmolding of the stator such that a connection hole of the carrier element aligns with one cavity. The cavity and the connection hole are at least partially filled with an electrically conductive material. In sum an electrical contact is established between the carrier element and the wire element.

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 circuit arrangement that includes a first DC-DC converter that is connected on the output side to a capacitor. A first terminal of the capacitor is a supply voltage terminal and a second terminal of the capacitor is a reference potential terminal. The circuit arrangement also includes a second DC-DC converter, which is connected on the input side with the capacitor and on the output side to a first terminal of a piezo actuator. The second terminal of the piezo actuator is connected to the first terminal of the capacitor.

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 for determining an injection quantity of a fuel injector determines a first time at which an injection process of the fuel injector starts, a second time at which the injection process of the fuel injector ends, calculates a model on the basis of the first time and the second time, which model represents the position of a nozzle needle of the fuel injector as a function of the time, and calculates the quantity of fuel to inject.

Abstract: An electromagnetic actuator includes an armature which has a stop face, and a pole piece which has a counter stop face, wherein the stop face and the counter stop face in terms of geometry are configured so as to be mutually complementary such that the stop face and the counter stop face in a movement of the armature toward the pole piece engage in one another, displacing a medium which is disposed between the stop face and the counter stop face. An electromagnetic valve may include the electromagnetic actuator, and a high-pressure fuel pump may include the electromagnetic valve.

Abstract: Embodiments relate to a turbine for an exhaust gas turbocharger, which has a turbine housing in which are provided a first and a second flow duct that each has an inlet region and an outlet region. A self-regulating rotary slide valve, which has an adjustable flow duct closure element, is arranged in the inlet region of the flow ducts.

Abstract: A pump device for an internal combustion engine, having a high-pressure fuel pump for supplying fuel to a first injection device, having at least one low-pressure inlet, via which the fuel is fed to the high-pressure fuel pump from a low-pressure fuel pump, having at least one low-pressure outlet for conducting the fuel conveyed by the low-pressure fuel pump and fed via the low-pressure inlet to the high-pressure fuel pump out of the high-pressure fuel pump, and having at least one low-pressure port, for conducting fuel conveyed by the low-pressure fuel pump to a second injection device. At least one mixing region mixes the fuel flowing through the low-pressure outlet with fuel fed to the mixing region from the low-pressure fuel pump upstream of the high-pressure fuel pump. The low-pressure port is fluidically connected to the mixing region, and the low-pressure inlet is supplied with fuel from the mixing region.

Abstract: A metallic honeycomb body with channels through which a gas may flow, made up of layers of at least partially structured sheet metal, the layers of sheet metal having at least in subregions at least two different structures, of which the first structure, with a greater structure height (H), determines the size of the channels and the second structure has a much smaller structure height (h) between troughs and peaks and the form and/or the structure height (H) of the second structure being chosen such that a ceramic coating applied later may fill the troughs of the second structure on average to at least 10%, in particular at least 50%, of their structure height (h). With the honeycomb body according to the invention, more coating material per unit of volume is durably attached in a metallic honeycomb body without excessively increasing the pressure loss. This is of advantage particularly for applications for reducing nitrogen oxides (NOx) in diesel exhaust gases.

Abstract: A charging device for an internal combustion engine, having an exhaust turbocharger and a recuperation-charger having a compressor-turbine and an electromechanical motor-generator coupled thereto. The high-pressure side of the compressor-turbine is connectable, by a valve arrangement, to the outside air supply line before the exhaust turbocharger on one side and on the other side, to the charge air supply line after the exhaust turbocharger. Outside air can be suctioned or charge air blasted via the low-pressure side of the compressor-turbine. The recuperation-charger is switched, by the valve arrangement and the motor-generator, between a standard mode, an amplifier mode and a recuperation mode, wherein the recuperation-charger operates on one side in the amplifier mode, driven by the motor-generator, as a compressor for pressure increase in the outside air supply line or, on another side, driven by the charge air flow, acts as a turbine for energy recovery by the motor-generator.

Abstract: A device and a method are provided for determining a stroke of an armature of a magnetic valve which has a coil and the armature is displaceable by magnetic force, including: providing at least one reference data set which includes a magnitude of a current through the coil and a magnitude of the magnetic flux in the case of a known magnitude of the stroke; generating a current flow through the coil of the magnetic valve in order to generate a magnetic field for generating a magnetic force on the armature, which magnetic force displaces the armature in the direction for the opening of a closure element coupled to the armature; determining a magnitude of the magnetic flux when the armature abuts against a driver of the closure element; and determining the magnitude of the stroke based upon the determined magnitude of the magnetic flux and the reference data set.

Abstract: A method and a corresponding device are disclosed for starting an internal combustion engine designed for alcohol or a high content of alcohol in a mixed alcohol-gasoline fuel, including setting an early starting ignition time point in a first time period beginning immediately after the activation of the starting process of the engine. The rotational speed of the internal combustion engine is monitored and the number of the cylinder working cycles is summed during the starting process and, upon exceeding a predetermined rotational speed threshold value, the number of those cylinder working cycles is summed in which there occurs a rotational speed increase greater than a predetermined threshold value. The number of the cylinder working cycles is compared with predetermined threshold values and, upon reaching or exceeding the threshold values, the ignition time point is shifted starting from the early ignition time point toward a late ignition time point.

Abstract: An exhaust system for the aftertreatment of exhaust gases of an internal combustion engine, having, in series as viewed in a flow direction of the exhaust gas, a catalyst for the oxidation of the exhaust gas and/or a catalyst for storing nitrogen oxides, having an introduction point for the feed of a reducing agent, having an SCR catalyst for the selective catalytic reduction of nitrogen oxides, and having a particle filter, wherein the particle filter is arranged downstream of the SCR catalyst in the flow direction, and a second SCR catalyst and/or an ammonia slippage catalyst is arranged downstream of the particle filter in the flow direction.

Abstract: A valve assembly for an injection valve is disclosed. The valve assembly includes a valve body having a cavity with a fluid inlet portion and a fluid outlet portion, a valve needle, an armature which is able to slide on the valve needle, and a disc element positioned to limit axial displaceability of the armature relative to the valve needle. The disc element includes a plurality of passages extending in axial direction through a disc-shaped part of the disc element. The passages provide a first flow resistance for a fluid passing in a direction away from the fluid outlet passage and a second flow resistance in a direction towards the fluid outlet passage, wherein the second flow resistance is larger than the first flow resistance.

Abstract: An example embodiment relates to a method for switching a current in an electromagnet of a switchable solenoid valve, wherein, in successive switching cycles, the current is in each case switched on in order to close the valve against a force of a spring, and thereby the current is generated by electrical connection of the electromagnet to a voltage source. The example embodiment makes provision for the current in the electromagnet to be generated with a current direction opposite to the respective previous switching cycle in at least two successive switching cycles in a switched operation of the valve.