Abstract: An electric drive system in a battery electric vehicle (BEV) includes an output shaft, configured to couple with a drive wheel of the BEV, having a face gear at a distal end; a differential, including a pinion gear cage receiving pinion gears rotatably connected to the pinion gear cage via gear pins; and a housing that receives the differential having an outer surface that is configured to couple to a rotating electrical machine of the BEV, wherein the pinion gears engage the face gear and permit angular displacement of the output shaft relative to another output shaft.

Abstract: An electric motor includes a stator and rotor. The stator includes a stator core defining a stator bore, and a plurality of windings having end turns extending from the stator core. This includes a central region configured to be disposed in the stator bore, and first and second end regions extending from the central region and aligned with the end turns of the plurality of windings. The rotor defines a cooling bore in fluid communication with a low-pressure cooling fluid source and includes a plurality of cooling jets in fluid communication with the cooling bore and disposed in the first and second end regions. The plurality of cooling jets extends radially outward such that each cooling jet is configured to pull cooling fluid through the cooling bore and eject cooling fluid toward the end turns in response to centrifugal force caused by rotation of the rotor within the stator bore.

Abstract: A stator for an electric machine comprises a cylindrical core defining an inner cylindrical surface and an outer cylindrical surface with a plurality of slots formed between the inner cylindrical surface and the outer cylindrical surface. Windings are positioned on the cylindrical core. The leads of the windings include a plurality of inner leads associated with conductors in an inner layer of the slots and a plurality of outer leads associated with conductors in an outer layer of the slots. A bus bar assembly includes a plurality of inner bus bars and a plurality of outer bus bars, the plurality of inner bus bars connected to the plurality of inner leads, and the plurality of outer bus bars connected to the plurality of outer leads. The plurality of outer bus bars are positioned radially outward from the end turns of the windings and radially inward from the outer cylindrical surface.

Abstract: An entryway system includes a divided volute turbocharger having variable turbine geometry (VTG). The turbocharger includes a turbine housing, first and second volutes separated by a wall having a first and second tongue, and a turbine housing outlet. The system also includes a turbine wheel disposed in the turbine housing and a vane ring disposed in the turbine housing between the turbine wheel and the volutes. The system includes design modifications of one or more of the VTG components and/or locations of such components to manipulate the aerodynamic forces and/or subsequent mechanical loads in the VTG mechanism of the entryway system to mitigate VTG component wear during normal usage.

Abstract: A recirculation fan turbocharger assembly (23) recycles hydrogen and supplies air in a fuel cell system. The assembly (23) includes a fan (25), a compressor (27), and an electric drive (31) and/or a turbine (29). The fan (25) has an impeller (255) which is designed to convey a hydrogen containing recycle stream (250) to a fuel cell unit (1). The compressor (27) has a compressor wheel (275) which is designed to compress an air stream (270) for a fuel cell unit. The compressor wheel (275) and the impeller (255) are coupled to one another in a rotationally fixed manner. The electric drive (31) and/or a turbine (29) is/are designed to drive the impeller (255) and the compressor wheel (275) simultaneously.

Abstract: A stator for an electric machine includes a core and a multi-phase winding arrangement positioned on the core. Each phase of the winding arrangement includes a plurality of parallel paths defining a plurality of poles for the electric machine. Each parallel path includes a plurality of coils positioned on the core, each coil defined by coil legs and end turns. The coil legs include left legs and right legs extending through the slots of the core. The left legs and right legs of each coil are connected by first end turns at one end of the core and second end turns at an opposite end of the core. Each pole of the electric machine is associated with a pole slot set comprised of multiple slots on the stator core. For each pole slot set, legs for each parallel path extend through one of the slots of said pole slot set.

Abstract: A rotor assembly includes a shaft defining a lubricant inlet channel for receiving a lubricant and a lamination stack. The lamination stack is rotatably coupled to the shaft, extends between first and second lamination stack ends, and defines a lubricant cooling channel in fluid communication with the lubricant inlet channel. The rotor assembly also includes a first end cap adjacent to the first lamination stack end and a second end cap adjacent to the second lamination stack end. One of the first end cap and the second end cap defines an end cap inlet at a first radial distance from the shaft, a lubricant outlet channel defined to extend at least partially radially inward toward the shaft, and an end cap outlet at a second radial distance from the shaft which is less than the first radial distance for expelling the lubricant.

Abstract: Disclosed is a turbine arrangement for a supercharging device. The turbine arrangement comprises a turbine housing, a turbine wheel and a guide device. The turbine housing defines a turbine spiral and a turbine outlet. The turbine wheel is arranged in the turbine housing between the turbine spiral and the turbine outlet. The guide device comprises a carrier ring and multiple guide blades. The guide blades are arranged on the carrier ring fixedly in a predetermined orientation. The guide device is arranged in an inflow channel between the turbine spiral and the turbine wheel such that, during operation, fluids are conducted from the turbine spiral through the inflow channel over the guide blades onto the turbine wheel.

Abstract: A stator arrangement for an electric machine has a stator and an interconnection module. The stator includes a stator core on which a stator winding is arranged. The interconnection module electrically interconnects winding wire ends of the stator winding. The interconnection module is positioned on the stator on an end side. The interconnection module includes integral electrical terminal conductors which are embedded at least partially in a body of an electrically insulating material. The terminal conductors each form a terminal contact to which an external power supply and/or control of the stator arrangement can be connected, and a winding contact which is electrically conductively connected to a winding wire end.

Abstract: A stator comprises a stator core having stator teeth, a first end cap and second end cap which each have a base and a winding wire support, wherein the end caps are arranged on the same stator tooth so that the bases are directed toward front sides of the stator tooth, and a stator winding having a wire which is wound over the end caps around the stator tooth. The winding wire support has two projections which project at opposite sides over the base. The wire extends over the projections of the end caps. An insulation film comprises front edges and extends between one of the projections of the first end cap and the opposite projection of the second end cap. The film is arranged between the wire and the stator tooth. The wire extends over the projections without applying any force action to the front edges of the film.

Abstract: A motor housing 20 for an axial flux motor 10. The motor housing 20 includes at least one housing portion 22, 24 which is of at least partially double-walled configuration, in order to configure an internal cooling channel 40 in the housing portion 22, 24. The cooling channel 40 extends in a substantially annular manner in the circumferential direction 6 between an inlet 41a and an outlet 41b, in order, during operation, to produce a first cooling flow 82 which flows substantially in the circumferential direction 6 through the cooling channel 40. Furthermore, the cooling channel 40 includes a plurality of transverse ribs 50.

Abstract: Check valve assembly for a tensioner with a U-shaped retainer defining a cavity and having at least one retainer opening and axially extending flanges; a moveable member received within the cavity; a check valve spring received within the cavity and between the moveable member and the retainer; a valve seat having axially extending flanges and defining a seat opening nesting within the cavity of the retainer, and a check valve vent washer. The check valve vent washer has an outer circumference with a plurality of spaced apart legs and openings; and an inner circumference in fluid communication with the outer circumference through the openings, the inner circumference has a concentric interior well connecting the plurality of openings to a vent reservoir, a central ring defining a central hole in communication with the internal reservoir, the central ring comprising a vent groove connecting the vent reservoir to the central hole.

Abstract: A recirculation blower (17) for a return arrangement for a gas, including hydrogen gas in a fuel-cell system, includes a blower (23) and a turbine (31). The blower (23) is configured to be driven by a turbine and to transport a return stream. The turbine (31) is configured to drive the blower (23) and to be driven by a hydrogen stream.

Abstract: A stator for an electric machine comprises a stator core and a winding positioned on the stator core. The stator core includes a plurality of teeth defining a plurality of slots. The winding is comprised of a plurality of segmented conductors connected together to provide a plurality of parallel paths per phase for the winding, each conductor comprising (i) an end loop provided on a crown end of the stator core, (ii) two legs extending through the slots, and (iii) two leg ends extending out of the slots on a connection end of the stator core, each leg end having a twist portion. The legs of the conductors are arranged in layers in the slots, wherein the layers include a total number of layers (L), L being greater than five and L/2 being an odd whole number. Each leg end extending from each of the layers has a common twist associated with the layer from which said leg extends.

Abstract: A guide blade (200) for a guide device (100), including a guide blade body (201) with a blade top side (210), a blade underside (220), a blade leading edge (230) and a blade trailing edge (240). The guide blade (200) also comprises a profile centerline (250) which is defined in a profile of the guide blade body (201) by the blade top side (210) and the blade underside (220) and runs between them from the blade leading edge (230) to the blade trailing edge (240), the profile centerline (250) having a turning point (IP). The blade leading edge (230) and the blade trailing edge (240) are connected by a profile chord (260). The guide blade (200) has a guide blade axis of rotation (PA). The axis of rotation (PA), starting from the blade leading edge (230) in the direction of the blade trailing edge (240), lies along the profile chord (260) between the blade leading edge (230) and the turning point (IP).

Abstract: A drive module for a vehicle including an electric machine, an inverter, a gearing assembly, and a cooling system. A first housing member thermally coupled with the inverter has a first set of heat exchange surfaces and a second housing member thermally coupled with the electric machine has a second set of heat exchange surfaces. The first and second sets of heat exchange surfaces each project into an interior volume cooled by an externally supplied liquid coolant which thereby defines a heat exchanger. A lower oil sump for collecting oil used to cool the electric machine may also include heat exchange surfaces projecting into the same heat exchanger. The gearbox may include an elevated oil sump which is supplied by the same oil pump circulating oil on the electric machine wherein the elevated oil sump gravity feeds oil onto selected surfaces within the gearbox.

Abstract: A torsion spring for an oil pump chain tensioner for use in an engine. The torsion spring has: a second end; a leg connected to the second end through a hook bend; an outer coil connected to the leg having an outer coil outer circumference and an outer coil inner circumference; a first inner coil connected to the outer coil, the first inner coil having a first inner coil outer circumference and a first inner coil inner circumference, the outer coil inner circumference being adjacent to the first inner coil outer circumference; and a second inner c-shaped coil connected to the first inner coil through a bend back loop, the second inner coil having a second inner coil outer circumference and a second inner coil inner coil circumference and terminating in a first end, where the second inner coil outer circumference and the first coil inner circumference define a gap.

Abstract: A cylindrical workpiece with a helical axial groove allowing for centerless grinding which has an angular overlap around the outer circumference on the body of the workpiece. The angular overlap ensures continuous tangential contact with the grinding wheels as the workpiece is rotated.

Abstract: Disclosed is a compressor comprising a rotating assembly, which comprises a compressor wheel and a rotor of an electric motor, a stator of the electric motor, a bearing for the rotating assembly, a support that supports the bearing, and a cooling channel for purposes of cooling the electric motor. In accordance with this disclosure, a section of the cooling channel is arranged in the support.

Abstract: A method and arrangement is disclosed herein for making a stator with 3D printed end turns. The stator includes a stator lamination stack with semi-closed slots. Straight I-pin wire segments are housed in the slots of the stator lam stack and form the in-slot segments of a stator winding arrangement. The end turns of the winding arrangement are provided by a conductive material that is 3D printed material at both axial ends of the straight I-pins. The end turns result in a winding arrangement with diamond coils that are inter-locked. The 3D printing of the end turns makes the winding arrangement possible, as the winding arrangement is configured such that it cannot be inserted into the lamination stack in a radial direction (i.e., via any slot openings at the inner diameter or outer diameter).