Abstract: A method for operating a drive train which has an electric motor for producing a mechanical target torque corresponding to an electric desired power level includes: specifying, as a function of a state of charge of a power battery, the electric desired power level, the electric desired power level being independent of the state of charge of the power battery when the state of charge of the power battery is in a plateau region.

Abstract: An electrical system of a vehicle includes at least one energy store, the vehicle having an internal combustion engine and electric machine mechanically coupled thereto, an actuatable accelerator pedal for predefining a torque to be output, an engine controller for injection of fuel, and an actuatable brake pedal, using which a controller is activated at least in a first partial range of its actuation, subject to first external operating conditions, so that recuperative power of the electric machine is generated at the same time that energy is fed into the electrical system. To increase the recuperation potential, the electric machine is switched to recuperative power by the controller in an operating phase in which a driver request is inferred due to actuations of the accelerator pedal, resulting in a braking power of the vehicle, the injection of the internal combustion engine being maintained due to second internal operating conditions.

Abstract: A method for preparing a start-up of an internal combustion engine with a belt-driven starter generator having a stator and rotor windings, the starter generator being operated so that its generated torque slowly increases over a period of more than two rotor winding-time constants. The stator winding is energized so that the generated torque slowly increases over a period of more than two rotor winding-time constants. The rotor winding is energized and, when a field current through the rotor winding is below a lower threshold value prior to the beginning of its energization, the stator winding is energized, before the field current is above an upper threshold value. The belt of the starter generator is pre-tensioned prior to the actual starting operation by activating the electric machine so that jolts, vibrations and noises, which occur during the start-up of the internal combustion engine with a starter generator, may be avoided.

Abstract: A method is described for controlling a voltage limit for a maximally permissible operating voltage in an on-board electrical system of a vehicle, including the step of adapting the voltage limit in dependence on vehicle data, wherein an actual voltage is ascertained and the actual voltage is short-circuited or limited if the actual voltage exceeds the voltage limit. Also described is a device for controlling a voltage limit for a maximally permissible operating voltage in an on-board electrical system of a vehicle, having an adaptation device for adapting the voltage limit in dependence on vehicle data.

Abstract: Exemplary embodiments are direct to a valve system for actuating the piston of a piston cylinder arrangement for a hydraulic or fluid device, and for actuating the piston cylinder arrangement for actuating the movable contact piece of a high-voltage circuit breaker. The system including a main control valve arrangement, having two 2/2-way valves used as main valves and which can be controlled by a pilot control valve arrangement. The main control valve arrangement directs a path for the high pressure fluid to the chamber above the piston and connects the chamber to a low-pressure tank for discharging the chamber above the piston. Two 2/2-way valves which form the pilot control valve arrangement are associated with the main control valve arrangement such that the 2/2-way valves direct or supply either a high-pressure control pressure or a low-pressure control pressure to the main control valve arrangement.

Abstract: A device for operating a drivetrain, which drivetrain includes an electrical machine, has an energy management unit and an electrical machine management unit. The energy management is configured for transmitting a desired electrical, and/or a lower electrical limit, and/or an upper electrical limit power to the electrical machine management unit.

Abstract: In one embodiment, a method of forming a semiconductor package comprises providing a first die having contact regions on a top surface but not on an opposite bottom surface. A dielectric liner layer is deposited under the bottom surface of the first die. The first die is attached with the deposited dielectric liner layer to a die paddle of a substrate. A bond layer is disposed between the substrate and the dielectric liner layer.

Abstract: A setpoint for a mechanical torque of a generator in a recuperation system of a motor vehicle is specified, and a generator current of the generator for setting the specified mechanical torque of the generator is set.

Abstract: A differential cylinder for a hydro-mechanical drive for actuating an electric switch, for example, a high-voltage switch, can include a first pressure area to be loaded with an operating pressure, a second pressure area, and a piston which can be moved in a movement range as a function of the pressure difference between the first and second pressure area. A damping device is provided which, during a movement of the piston in the direction of the second pressure area in one section of the movement range, provides damping against the movement of the piston, wherein the damping is adjustable.

Abstract: A differential cylinder for a hydromechanical drive for actuating an electrical switch, for example a high-voltage switch, is disclosed which includes a first pressure region for applying a working pressure, a second pressure region, and a piston which is capable of moving in a movement region and which is movable depending on a pressure difference between the first and second pressure region. A damping device is provided which, in the event of a movement of the piston in the direction of the second pressure region, provides damping with respect to the movement of the piston in a section of the movement region, wherein the damping is adjustable.

Abstract: Exemplary embodiments relate to a valve arrangement for actuating a piston cylinder arrangement, that includes a pilot control valve arrangement and a main control valve arrangement, wherein both the pilot control and main control valve arrangement include a 3/2-way valve as a pilot control valve and as a main control valve. Each valve has a control-pressure, high-pressure, and low-pressure connection. Said connections are connected to each other such that the main control valve is controlled via the control-pressure connection of the pilot control valve and the pressures on the control-pressure connection of the pilot control valve and the pressures on the control-pressure connection and on the high-pressure connection of both valves, are statically inverted relative to each other. The 3/2-way valves are designed as seat valves and are only hydraulically connected to each other.

Abstract: The invention relates to a machine tool for machining a work piece having a main spindle unit with a preferably vertical spindle axis, and a machining spindle unit, particularly a hobbing spindle unit that is arranged next to the spindle axis in a direction crosswise to the spindle axis to accommodate a machining tool, with said machining spindle unit being displaceable along a first guiding direction, in particular vertically (Z) by means of a first guide and crosswise, preferably perpendicularly (X) or approximately perpendicularly displaceable to the first guiding direction, particularly the vertical, by means of a second guide, can advance to a work piece clamped in the main spindle unit, and can swivel around a swivel axis (B), preferably perpendicularly to the spindle axis (A) of the machining spindle unit, and with the machining tool having an arbitrary number of helically arranged machining elements, in particular a single- or multi-threaded generating means, adapted to execute generating teeth manufa

Abstract: A printable ink mixture may include: a medium, orthophosphoric acid, at least one metal oxide, and at least one pigment. A method for producing a color print on a glass or ceramic surface may include: producing an ink mixture including a medium, orthophosphoric acid, at least one metal oxide, and at least one pigment, applying the ink mixture to the glass or ceramic surface, removing the medium from the ink mixture, and baking the ink mixture on the glass or ceramic surface to produce the color print.

Abstract: In a method for lowering the air temperature of an engine compartment of a vehicle accommodating an internal combustion engine, an air-fluid heat exchanger having at least one cooling element for cooling the air-fluid heat exchanger, and an electric drive, the at least one cooling element is activated as a function of the temperature of a fluid side of the air-fluid heat exchanger and as a function of a temperature of the electric drive.

Abstract: A device for operating a drivetrain, which drivetrain includes an electrical machine, has an energy management unit and an electrical machine management unit. The energy management is configured for transmitting a desired electrical, and/or a lower electrical limit, and/or an upper electrical limit power to the electrical machine management unit.

Abstract: A storage module for a hydraulic stored-energy spring mechanism for operating a high-voltage switch, for example a high-voltage circuit breaker, having a spring element which acts to store energy and having a fluid for transmitting the energy of the spring element, by a moving storage piston, to a piston rod for operating the high-voltage switch, wherein the storage piston projects into the housing which is filled with fluid and the housing forms a pressurized storage reservoir for the fluid. The pressurized storage reservoir is connected to a hydraulic system of the stored-energy spring mechanism by at least one channel element which projects into the pressurized storage reservoir and a pressurized channel which is connected to the channel element. The storage piston closes a subregion of the channel element starting from a specific piston stroke “s.

Abstract: In one embodiment, a method of forming a semiconductor package comprises providing a first die having contact regions on a top surface but not on an opposite bottom surface. A dielectric liner layer is deposited under the bottom surface of the first die. The first die is attached with the deposited dielectric liner layer to a die paddle of a substrate.

Abstract: A setpoint for a mechanical torque of a generator in a recuperation system of a motor vehicle is specified, and a generator current of the generator for setting the specified mechanical torque of the generator is set.

Abstract: In a method for predefining a generator-based braking power of an electric machine in a vehicle, a motor-based propulsion power is predefined as a function of the position of a first final control element, e.g., an accelerator pedal, and the generator-based braking power is predefined as a function of the position of the first final control element, the generator-based braking power assuming values which are unequal to zero, already at an actuated position of the first final control element.