Abstract: Embodiments of the present disclosure relate to a method and device for valve travel switching control of an internal combustion engine supercharged by an exhaust-gas turbocharger having a wastegate valve. This valve travel switching control includes: determining the current sensitivity of the charge pressure at a current operating point, at which a current valve travel, a current wastegate valve position and a current charge pressure are present, to changes in the wastegate valve position; determining the minimum valve travel necessary to set a desired operating point, taking into account the determined current sensitivity of the charge pressure; and switching the valve travel if the minimum valve travel necessary to set the internal combustion engine to an extended range with respect to the desired operating point differs from the current valve travel. By means of these measures, the fuel saving operating range of the internal combustion engine is enlarged.

Abstract: In order to transmit data from an absolute position measurement system to an incremental interface, the transmission of an absolute position is carried out in a virtual reference journey of a position counter (cnt) via several phase-shifted electrical signals. During the virtual reference journey, at least one further information is transmitted in addition to the absolute position. For this purpose, a correspondingly designed absolute measurement system and a computing device are used, the computing device being designed to receive and evaluate data via an incremental interface.

Abstract: Various embodiments may include a method for controlling the residual gas mass remaining in a cylinder of an internal combustion engine after a gas exchange process and/or the purge air mass introduced into an exhaust manifold during a gas exchange process, the method comprising: specifying at least one of a desired residual gas mass or a purge air mass of the cylinder of the internal combustion engine; determining a setpoint position of an actuator which influences the specified mass, based on an inverse residual gas model; and setting the determined setpoint position of the actuator.

Abstract: In a length or position measuring system which has an at least locally substantially linear measuring gauge and at least one sensor able to be moved relative to the measuring gauge wherein the measuring gauge includes an incremental track and at least one absolute track and wherein the incremental track and the at least one absolute track have pole pairs arranged in the longitudinal direction of the measuring gauge, it is provided in particular that at least one pole pair of the absolute track is phase-shifted relative to a corresponding pole pair of the incremental track.

Abstract: An EC motor is provided having a stator, in which an armature is rotatably supported, the armature including an armature shaft, on which an armature core having a plurality of permanent magnets is held, the armature core being electrically insulated against the armature shaft with the aid of a casting compound, and a balance ring being provided on at least one axial end of the armature core, which is accommodated on the armature shaft by a central recess, a gap between the armature shaft and the central recess of the balance ring being filled with casting compound, and the permanent magnets being held in pockets of the armature core by casting compound.

Abstract: Various embodiments may include a method for operating an internal combustion engine having a wastegate turbocharger comprising: measuring an intake pipe pressure; determining a cylinder air mass from the pressure; injecting an amount of fuel into a cylinder of the internal combustion engine based on the air mass; determining and a plausible intake pipe pressure gradient for a current engine operating point; calculating a gradient of the measured intake pipe pressure during a full-load acceleration; comparing the stored plausible intake pipe pressure gradient to the calculated gradient; identifying manipulation of the intake pipe pressure sensor if the difference between the stored plausible intake pipe pressure gradient and the calculated gradient exceeds a selected threshold value; and limiting a power output of the engine if manipulation is identified.

Abstract: The present disclosure relates to internal combustion engines in general. The teachings may be embodied in methods and devices for operating an internal combustion engine having one or more cylinders which are each assigned gas inlet valves. The method may include: in a first operating state, determining a model temperature of a gas in the intake tract cyclically for a present point in time using a predefined intake pipe model without reference to a present temperature measurement value of the gas; determining a cylinder air mass situated in a respective cylinder after closing the gas exchange valves based at least in part on the model temperature determined for the present point in time; and metering fuel into the respective cylinder based at least in part on the determined cylinder air mass. The model temperature for the present point in time depends at least in part on a model temperature determined for a preceding point in time.

Abstract: In order to transmit data from an absolute position measurement system to an incremental interface, the transmission of an absolute position is carried out in a virtual reference journey of a position counter (cnt) via several phase-shifted electrical signals. During the virtual reference journey, at least one further information is transmitted in addition to the absolute position. For this purpose, a correspondingly designed absolute measurement system and a computing device are used, the computing device being designed to receive and evaluate data via an incremental interface.

Abstract: The description relates to a method for controlling a servo drive of a steering system of a vehicle, comprising the step of: failure of the feedback comprising the step of: monitoring the control of the servo drive.

Abstract: In a length or position measuring system which has an at least locally substantially linear measuring gauge and at least one sensor to be moved relative to the measuring gauge, wherein the measuring gauge includes an incremental track and at least one absolute track and wherein the incremental track and the at least one absolute track have poles arranged in the longitudinal direction of the measuring gauge, the poles of the at least one absolute track form at least two regions in the sensor with different field strengths or signal amplitudes.

Abstract: A method for linearizing sensor signals in a magnetic strip length measuring system moves a sensor head between two magnetic poles of a measurement body. In particular, linearization takes place dynamically during operation of the magnetic strip length measuring system, and linearization deviations are compensated by extrapolation as the sensor head moves between the two poles of the measurement body from pole to pole or from pole pair to pole pair.

Abstract: The invention proposes a method for operating a sensor system comprising at least one sensor unit which provides signals, in which the signals comprise primary measurement value signals which are measurement values of the sensor unit or are generated from measurement values of the sensor unit and in which the signals comprise coefficient signals which characterize the measurement value capture.

Abstract: The disclosure relates to internal combustion engines. The teachings thereof may be embodied in methods for controlling the actuator of the wastegate of an exhaust gas turbocharger of a motor vehicle. A method for controlling an actuator of the wastegate of an exhaust gas turbocharger of a motor vehicle may include: characterizing the wastegate in a model as a series connection of two throttle points; and actuating the wastegate based on the model.

Abstract: The present disclosure provides a method for adjusting the operation of an internal combustion engine comprising: determining a gradient of an overrun-air line based on an ambient condition and a current operating point; determining a value for a cylinder air mass situated in a cylinder after closure of the gas exchange valves; and using the determined cylinder air mass to adjust one or more operating parameters of the internal combustion engine. The overrun-air line may correspond to an air mass situated in the respective cylinder after closure of the gas exchange valves at predefined operating temperature for the engine, when the engine is operated briefly without fuel metering and combustion. Determining a cylinder air mass may be based at least in part on the current operating point and the current ambient value of the at least one ambient variable.

Abstract: In a length or position measuring system which has an at least locally substantially linear measuring gauge and at least one sensor to be moved relative to the measuring gauge, wherein the measuring gauge includes an incremental track and at least one absolute track and wherein the incremental track and the at least one absolute track have poles arranged in the longitudinal direction of the measuring gauge, the poles of the at least one absolute track form at least two regions in the sensor with different field strengths or signal amplitudes.

Abstract: In a length or position measuring system which has an at least locally substantially linear measuring gauge and at least one sensor able to be moved relative to the measuring gauge wherein the measuring gauge includes an incremental track and at least one absolute track and wherein the incremental track and the at least one absolute track have pole pairs arranged in the longitudinal direction of the measuring gauge, it is provided in particular that at least one pole pair of the absolute track is phase-shifted relative to a corresponding pole pair of the incremental track.

Abstract: The present disclosure relates to internal combustion engines in general. The teachings may be embodied in methods and devices for operating an internal combustion engine having one or more cylinders which are each assigned gas inlet valves. The method may include: in a first operating state, determining a model temperature of a gas in the intake tract cyclically for a present point in time using a predefined intake pipe model without reference to a present temperature measurement value of the gas; determining a cylinder air mass situated in a respective cylinder after closing the gas exchange valves based at least in part on the model temperature determined for the present point in time; and metering fuel into the respective cylinder based at least in part on the determined cylinder air mass. The model temperature for the present point in time depends at least in part on a model temperature determined for a preceding point in time.

Abstract: An internal combustion engine has a crankcase and a crankcase ventilation system having a switchable shut-off valve, and sensors that detect different operating parameters of the engine, including a load variable of the engine. An estimated load parameter is determined based on the different detected operating parameters using a dynamic model, and a corrective value of a characteristic value is determined as a function of a deviation between the estimated load variable and the detected load variable. To implement a diagnosis, diagnosis switching cycle(s) are controlled, in which the shut-off valve is set to a closed switched position for a first time and set to an open switched position for a second time. A diagnosis value representative of a shut-off valve being in a correct or incorrect state is determined based on a change to the corrective value in response to the one or the plurality of diagnosis switching cycles.

Abstract: The invention proposes a method for operating a sensor system comprising at least one sensor unit which provides signals, in which the signals comprise primary measurement value signals which are measurement values of the sensor unit or are generated from measurement values of the sensor unit and in which the signals comprise coefficient signals which characterize the measurement value capture.

Abstract: The present disclosure provides a method for adjusting the operation of an internal combustion engine comprising: determining a gradient of an overrun-air line based on an ambient condition and a current operating point; determining a value for a cylinder air mass situated in a cylinder after closure of the gas exchange valves; and using the determined cylinder air mass to adjust one or more operating parameters of the internal combustion engine. The overrun-air line may correspond to an air mass situated in the respective cylinder after closure of the gas exchange valves at predefined operating temperature for the engine, when the engine is operated briefly without fuel metering and combustion. Determining a cylinder air mass may be based at least in part on the current operating point and the current ambient value of the at least one ambient variable.