Abstract: A PWM signal on which a dither signal is superimposed is used for adjusting a central position when controlling a solenoid valve. To improve this type of control process in which the amplitude of the dither signal depends on the current of the solenoid valve and thus on the PWM signal, the PWM signal and the dither signal are generated in a computer unit independently of the power regulation process. Forming the signals separately has the advantage of generating a constant amplitude for the dither signal each time a triggering signal is generated for the solenoid valve such that the armature of the solenoid valve can oscillate specifically about the central position and thereof at constant small vibrations. This allows frictional forces to be reliably reduced and the solenoid valve to be switched more rapidly while the load on the main computer is reduced.

Abstract: A piezoceramic multilayer actuator has at least one outer electrode which can expand and provides at least two current paths between a supply potential connecting area of the outer electrode and a respective inner electrode, with which the outer electrode makes contact, of a piezo-stack of the multilayer actuator.

Abstract: In an internal combustion engine with several cylinders, at least one cylinder is configured as a reference cylinder to which an active cylinder pressure sensor is allocated. A passive cylinder pressure sensor is allocated to each of the remaining cylinders. At least one actuating member is assigned to the cylinders. A crankshaft angle sensor is provided. During the quasi-stationary operating mode, the cylinder segment durations are equated, by an actuating member engaging in at least one actuating signal allocated to the respective cylinder. Furthermore, during the quasi-stationary operating mode, the measuring signal of the active sensor is allocated to the respective measuring signals of the passive sensors. As a result, the signal processing of the measuring signals of the passive sensors is adjusted depending on the respective measuring signals of the passive sensors captured during the quasi-stationary operating mode and on the allocated measuring signal of the active sensor.

Abstract: In an actuator, an electric motor having a pinion is disposed, which engages directly in the teeth of a gear wheel having spline teeth, which is fixedly connected directly to the drive shaft, on which the valve flap is disposed. A use of the actuator for actuating an exhaust gas recirculation valve of a motor vehicle.

Abstract: A circuit configuration monitors the electrical insulation of an electrically conductive part in relation to a first pole and a second pole of an electrical power network for example, an electrical drive network in a hybrid vehicle. The circuit configuration is characterized in that between the electrically conductive part and the two poles, a voltage divider having at least two resistors is arranged in each case. A measuring unit is associated with each of the two voltage dividers and provided for measuring a partial voltage, which drops via at least one of the resistors. A switch unit is associated each with the two voltage dividers and is provided for alternately bypassing at least one of the resistors.

Abstract: A method for operating wheel electronics of a tire checking system includes providing wheel electronics having a battery-free power supply encompassing at least one rechargeable power storage medium for supplying power to the wheel electronics. The wheel electronics can be operated in a reduced-power transmission mode and a subsequent normal transmission mode. In the modes, data that relate to tire-specific parameters and are determined by the wheel electronics are transmitted to a vehicle-mounted communication device in the form of modulated transmission signals, with less transmission power being used for the transmission signals in the power-reduced transmission mode than in the normal transmission mode. Wheel electronics and a tire checking system are also provided.

Abstract: A method for monitoring the state or an engine oil in an internal combustion engine, in which first the viscosity of the engine oil is determined at different temperatures of the engine oil, after which a viscosity index is ascertained from the viscosity and the temperature of the engine oil, which method permits a reliable statement about the state of the engine oil during its issue in the internal combustion engine to be made, the viscosity index of the engine oil is determined at different successive times and the change of the viscosity index over time is used as a measure for assessing the oil state.

Abstract: A monitoring circuit is provided for an energy storage device. The energy storage device has a plurality of cells which each provide a voltage between their first and second connections and are switched in series. At least two voltage measuring circuits are provided, wherein the voltage measuring circuits each measure the voltage between a first measurement input and a second measurement input. A first connection conductor connects the first terminal of the first cell to the first measurement input of a first voltage measurement circuit. A second connection conductor connects the second terminal of the first cell to the second measurement input of a first voltage measurement circuit. A first load resistor can be switched between the first measurement input of the second voltage measurement circuit and a first fixed potential.

Abstract: A shift lever head attached to a free end of a shift lever by the first end region thereof for actuating a transmission of a motor vehicle. A receptacle open toward a second end region opposite the first end region is formed in the shift lever head, an input unit having a touch-sensitive and/or proximity-sensitive input surface being disposed in said receptacle.

Abstract: A motor vehicle has a first display and a first camera. An environmental image of the part of the environment of the vehicle lying behind the motor vehicle can be recorded using the first camera and the environmental image recorded using the first camera can be completely or partially displayed on the first display. The first display is disposed inside the motor vehicle such that the recorded environmental image, or a part of the recorded environmental image, may be perceivable as a virtual image behind a side pane of the motor vehicle for a driver of the vehicle.

Abstract: A touch pad arrangement having a touch pad which has a sensitive operating surface and which can be moved in a direction of movement by a guide mechanism in a guided manner without tipping between a raised resting position and a lowered position. A lever mechanism is arranged on at least two side areas of the touch pad lying opposite each other. The lever mechanism includes two levers which extend approximately toward each other along their own axes, and which are pivotably mounted in the center of their length about a fixed joint with an axis which extends transversally to the direction of movement of the touch pad. The levers can be acted upon in the direction of movement of the touch pad on the lever ends facing away from each other, by the touch pad or a touch pad support supporting the touch pad, and are connected to each other on their facing ends via a flexible connection.

Abstract: A method and system for transmitting data via a transmission pathway between a tachograph, which is disposed in a vehicle, and a data processing facility, which is at a distance from the vehicle. Data is transmitted wirelessly via at least a partial section of the transmission pathway and the tachograph is connected to a GSM module and/or a module for wireless data transmission The method includes producing a connection for wireless transmission between the GSM module and/or the module for wireless data transmission and the data processing facility, instructing the tachograph by the data processing facility to receive specific data; authentically the data processing facility and/or the tachograph transmitting specific data to the tachograph.

Abstract: Presented is a method for continuously determining the tensile force F in a cable of a parking brake that includes transmitting the tensile force F to a cable grommet coupled to a first end of an expandable intermediate part that includes a magnet and/or a magnetic sensor. The first end of the expandable intermediate part faces away from a drive spindle coupled to a second end of the expandable intermediate part. The method further includes changing the length of the expandable intermediate part in the direction of its longitudinal axis in response to the transmitted tensile force F, moving the magnet and the magnetic sensor relative to each other in response to the change in length, changing the signal voltage of the magnetic sensor in response to the relative movement between the magnet and the magnetic sensor, and determining the tensile force F from the respective signal voltage.

Abstract: A display instrument (1), in particular, for a motor vehicle, has a housing (2) retaining a cover disc (3) and a connector element (10), connecting the housing (2) and the cover disc (3) which engages in a housing recess (11), arranged on the housing (2). A secure connection of housing (2) and cover disc (3) for the display instrument (1) may be achieved, whereby the connector element (10) is arranged in the housing recess (11) and a disc recess (12), corresponding to the housing recess (11) on the cover disc (3), under tension. In the method for production of the display instrument (1), the connector element (10) is introduced under tension into the housing recess (11) and the disc recess (12) such as to connect the housing (2) and the cover disc (3) together. The method for disassembly of the display instrument (1) is based on pressing the connector element (10) out of the housing recess (11) and/or the disc recess (12).

Abstract: A guide vane, particularly for a turbocharger, has a line of curvature with at least one or more sectors having a discontinuous course.

Abstract: The invention provides an assembly comprising at least one substrate being bonded to a structural adhesive wherein the structural adhesive is obtained by curing a precursor comprising a cross-linkable polymer, wherein a surface area of the substrate bonded to the structural adhesive comprises at least one metal, said surface area being treated with a liquid activator.

Abstract: A turbocharger, especially a turbocharger for a motor vehicle, has a turbine housing and a bearing housing. The turbine housing and the bearing housing are fitted with a common cooling device. The turbine housing includes a flange for attaching to an exhaust gas manifold. The flange is formed with a coolant inlet, a coolant outlet, and an oil supply pipe.

Abstract: The exhaust gas recirculation valve comprises a tubular valve housing includes a gas inlet, a first gas outlet and a second gas outlet located proximate thereto. Located inside the tubular valve housing is a rotatably supported valve body that is designed as a hollow body having a semi-cylindrical lateral surface having a lateral penetration opening. The gas inlet as seen from the top includes a blocking wall on the side thereof facing the first gas outlet and the second gas outlet, the blocking wall being located inside the valve housing perpendicular thereto and having a height equal to at least the length of the valve body and sitting flush against the gas passage in the closed position of the exhaust gas recirculation valve.

Abstract: In a method for determining adapted measuring values and/or model parameters for controlling the air flow path of internal combustion engines, at least two measuring values and/or model parameters are simultaneously adapted, at least one total error variable which describes an inconsistency of the measuring values and model parameters being divided into individual correction variables for the measuring values and/or model parameters to be adapted, and these correction variables being applied to the measuring values and/or model parameters to be adapted.

Abstract: Disclosed are a method and a device for more rapidly switching inductive fuel injection valves. According to the invention, the magnetic retaining forces generated by remanence in a bistable valve comprising an opening and closing coil or by eddy currents in a standard valve comprising an opening coil and a closing spring are eliminated with the aid of a negative current that flows through the coil in a direction running counter to the direction of the operating current. Additionally, the magnetic yoke and armature that are used are made of materials having different conductivities in order to be able to close the valve even more quickly.