Abstract: A device for switching at least two partial gear mechanisms, namely a first partial gear mechanism and a second partial gear mechanism, each having at least two gear stages. The device comprising an actuator connected for drive purposes to a rotatable component, a first switching device for switching the first partial gear mechanism and a second switching device for switching the second partial gear mechanism both of which are arranged on the rotatable component, and an electric drive axle for a motor vehicle comprising a first drive wheel, a second drive wheel and such a device.

Abstract: A method and system for online monitoring and compensation of inter-turn short circuit faults (ISF) in windings of electric machines, such as permanent magnet synchronous motors is provided. A method for characterizing an ISF in a winding of an electric machine comprises: measuring phase voltages and currents; calculating sequence components of the electric machine based on the phase voltages and currents; determining a ratio between a percentage of shorted turns in the winding and a fault loop resistance based on the sequence components of the electric machine; and estimating characteristics of the inter-turn short circuit fault using an unscented Kalman filter. The characteristics include at least one of: a fault current, the percentage of shorted turns, or the fault loop resistance. A method for compensation an ISF in a winding of an electric machine comprises compensating the fault current based on the compensation current estimated from an unscented Kalman filter.

Abstract: An electric axle arrangement for a drive train of a motor vehicle includes a drivable axle that is or can be drivingly connected to an electric machine, a coolant sump with liquid coolant, and an elevated tank, wherein the liquid coolant is delivered from the coolant sump into the elevated tank via a gearwheel attached to the axle. The elevated tank is connected to a cooling system for cooling the electric machine via a switchable valve. When the valve is closed during an idling operation, the return flow of the coolant into the coolant sump via the cooling system is prevented, and drag losses in the idling operation of the electric machine are reduced, because more coolant collects in the elevated tank and the gearwheel therefore encounters a reduced quantity of coolant in the sump.

Abstract: A disconnectable differential assembly has a reduced axial length and a side gear disconnectable from an axle shaft via a clutch unit. Various components of the disconnect mechanism are axially aligned and concentric to reduce the axial length. An output hub splined on the axle shaft and is actuatable, via an axially shiftable armature, into toothed engagement with the side gear via respective axially extending teeth. The output hub and armature include radially extending flanges that are axially adjacent and radially aligned with the teeth so that force is transmitted to the teeth at the same diameter. A thrust bearing is disposed between the flanges so that the output hub rotates relative to the armature. The side gear is supported for rotation on the axle shaft, and a bearing is disposed radially therebetween to improve radial alignment of the second side gear with the output hub.

Abstract: The invention relates to a method for producing a differential housing having at least one machined bearing body and a machined gearing. In order to improve the differential housing in terms of production technology and/or function, the differential housing which has the bearing body is cast from a nodular cast iron material before the differential housing which has the bearing body and the gearing is machined.

Abstract: A fenceless system and method for automatically moving one or more items between a structure at a source location and a destination using a robot is provided. The system comprises a robot having an end effector to selectively grasp an item. A trajectory planning controller directs the robot to move the item between a source location and a destination. A touch sensor detects a contact between an external object and a surface of the robot or a surface surrounding the end effector; and a proximity sensor detects a person in proximity to the robot. A vision sensor detects a location and orientation of items to be moved. The robot moves in proximity to a person without a safety fence preventing the person from contacting the robot. The system adjusts a speed of the robot in response to detecting a person in one of a plurality of zones around the robot.

Abstract: A method of manufacturing a torque-transmitting component includes providing a flat blank to a transfer press having a plurality of stations and performing a plurality of pressing operations, in which the flat blank is formed into a cup shape, rough splines are formed on the cup shape, and the rough splines are further pressed to define smooth splines. The component includes a continuous smooth inner diameter defined by a punch of the transfer press and a plurality of smooth splines defined by a die of the transfer press. The minor diameter of the splines is not machined to form the splines.

Abstract: An apparatus for providing an electrical connection to at least one electrical component comprising a first busbar, a second busbar, wherein during the electrical operation the first busbar and the second busbar have a different potential with respect to one another and are arranged parallel to one another, a first insulation element and a second insulation element. The first insulation element and the second insulation element overlap in part in an axial direction but are arranged spaced from one another in the radial direction at least in part between the first busbar and the second busbar. In addition, at least the first busbar has a contacting means for providing an electrical contact to an electrical component, wherein the second insulation element is arranged in the region of the contacting means.

Abstract: Methods are provided for checking the actuating accuracy of a clutch arranged in a force flow between a fixable shaft and an electric machine of an electric or hybrid motor vehicle when at a standstill. One method includes: fixing the shaft, setting a defined setpoint torque on the clutch to be checked, continuously ramping up the electric machine up until the first slipping of the clutch, comparing the achieved torque of the electric machine with the setpoint torque preset on the clutch. Another method includes: fixing the shaft, ramping up the electric machine to a defined rotational speed, setting a defined setpoint torque on the clutch to be checked, comparing the torque of the electric machine needed to maintain a constant rotational speed with the setpoint torque set on the clutch.

Abstract: An electromagnetic machine includes a stator that includes a back plate and a plurality of electrical conductors radially disposed on the back plate. The electromagnetic machine also includes a rotor that includes a body having an outer diameter corresponding to an inner diameter of the stator and at least one magnet having a first end disposed proximate the stator and a second end disposed opposite the first end. The electromagnetic machine also includes an engaging member disposed on a shaft that extends axially relative to the rotor, the engaging member being configured to engage at least one recessed portion of the rotor.

Abstract: A housing for an electric machine includes a substantially cup-shaped outer housing having a first base portion and a first tubular portion adjoining the base portion. An inner housing, which has a substantially cup-shaped form, is arranged in the outer housing and has a second base portion and a second tubular portion adjoining the base portion. A cover is connected or connectable to the outer housing and/or the inner housing. At least one cooling channel is formed between the first tubular portion and the second tubular portion. A pocket is formed in the first base portion and forms a first cavity together with the second base portion, and a second cavity is formed in the cover. The first cavity is fluidically connected to the cooling channel via a first bore and the second cavity is fluidically connected to the cooling channel via a second bore.

Abstract: An electric drive system comprising an electric machine, a transmission connected to the electric machine, and an inverter. The electric drive system further comprising an at least two-part housing. The electric drive system having two mutually separate cooling circuits for the inverter and the electric machine, wherein the two cooling circuits are thermally connected via a heat exchanger that is installed, between the inverter and the electric machine, in the housing.

Abstract: A method for the dynamically expanding play correction according to a method for hysteresis compensation for an actuator and for a shift fork which is movable by this actuator via an electric motor having a rotor and a stator and which guides a gearshift sleeve, by means of a cellular automaton, wherein a torque ripple of the actuator and a mechanical displacement of the gearshift sleeve are compensated independently of one another or in combination by means of a learning algorithm.

Abstract: A discharge apparatus for an electrical drive arrangement of a vehicle, having an input interface, having an output interface, having a main switching device, wherein the main switching device is connected to the input interface, having a first discharge branch, wherein a first input of the first discharge branch is connected to the main switching device, having a second discharge branch, and having a control device, wherein the control device is designed to connect the first discharge branch in a first discharge state of the discharge apparatus and to connect the second discharge branch in a second discharge state.

Abstract: Parking brake assembly for a transmission in a vehicle with an electric actuation of the parking brake via a mechanism and with an emergency actuator with a lift magnet on a spring accumulator for application of the parking brake. The spring accumulator has a pawl rotatable about a pivot point connected to the lift magnet and a mass element connected to the pawl and rotatable about a second pivot point.

Abstract: A resolver for an electric machine includes a resolver stator and a connection module. The resolver stator and the connection module are formed as a single piece. The connection module includes a first plugging portion, which has at least one first contact pin and at least one second contact pin, and a second plugging portion, which has at least one third contact pin. The first contact pin is electrically connected to the resolver stator, and the second contact pin is electrically connected to the third contact pin.

Abstract: A system and method for determining an optimal route between an origin and a destination along one or more road segments is provided. The system includes a controller disposed within a vehicle and configured to determine the optimal route between the origin and the destination. A first data source provides the server with data regarding current and/or future conditions on a plurality of road segments. A second data source provides the server with data regarding actual traversals of the plurality of road segments. The system solves a backward problem to extract probability distribution functions for how each of several factors affect time and energy required to traverse each of the plurality of road segments. The system also solves a forward problem to apply the probability distribution functions, using data regarding actual conditions to determine the optimal route that is optimized for both of time and energy consumption.

Abstract: A drive system with an electric machine and two gear stages, formed by gearwheels and clutches, the rotor shaft of the electric machine defining an axial overall length, within which the predominant axial length component of an intermediate shaft which runs parallel to the former with gearwheels and an oil pump and the predominant axial length component of a split output shaft which runs parallel to the other shafts with two clutches run.

Abstract: A multi-phase LLC power converter comprises a plurality of LLC phases each including a resonant tank and a switching stage. The resonant tank includes a resonant inductor, a resonant capacitor, and a parallel inductance. The switching stage switches an input power at an operating frequency to apply a switched power to the resonant tank, with the switched power approximating an alternating current (AC) waveform having a switching frequency. A secondary-side controller varies the switching frequency to control an output voltage of the multi-phase LLC power converter. A primary-side controller measures primary-side currents, calculates an initial switch-controlled capacitor (SCC) conduction phase angle for each of the LLC phases, and operates an SCC switch in accordance with an SCC conduction phase angle to adjust the capacitance of the resonant capacitor of an LLC phase to cause each of the LLC phases to have equal resonant frequencies.

Abstract: A differential having a circulating carrier with drive gearwheel, at least two planet gearwheels rotatably mounted in the circulating carrier, with lateral gearwheels leading to side shafts of the drive axle of a vehicle and enmeshing with the planet gearwheels, wherein one lateral gearwheel can be connected either to the associated side shaft or to the circulating carrier via a coupling arrangement. The coupling arrangement is located between the circulating carrier and the side shaft and includes an actuator sleeve with an axially active claw coupling towards the lateral gearwheel and a radially active sliding toothing towards the side shaft.