Abstract: A bearing housing (1) of an exhaust-gas turbocharger (2), having a bearing cartridge (4), arranged in a bearing housing borehole (3), for a rotor (5), and having an oil film (6), which surrounds the bearing cartridge (4) on the outer circumferential surface (7) thereof. Provision is made of at least one decoupling/sealing element (8, 9), which is formed as a spring steel ring, and which is elastically tensioned between a first associated bearing cartridge end region (10) and an adjacently arranged bearing housing wall region (11).

Abstract: This disclosure relates to an arrangement 10 for variably adjusting the cross-section of a compressor inlet. Furthermore, the disclosure relates to a charging device having such an arrangement 10. The arrangement 10 comprises a compressor housing 100 with a main body 140 and an inlet cover 120. The inlet cover 120 defines a compressor inlet 110. The arrangement 10 further comprises an adjustment mechanism 200 which is arranged in the compressor housing 100. The adjustment mechanism 200 comprises an actuation ring 210 and a plurality of orifice elements 220. Each orifice element 220 is coupled to the actuation ring 210 via a respective coupling element 230 and is rotatably supported in the compressor housing 100 via a respective shaft 240. Furthermore, the arrangement 10 comprises at least one wear reducing feature providing a wear reduced operation of the adjustment mechanism 200.

Abstract: A wastegate assembly for a turbocharger includes a valve element. The valve element has a valve body, a first shaft extending away from the valve body along a first axis, and a second valve shaft spaced from the first valve shaft and extending away from the valve body along a second axis. The valve element is movable between a first and a second position to control exhaust gas flow to a turbine housing interior of the turbocharger. The wastegate assembly also includes a valve arm coupled to the first and second valve shafts for moving the valve element between the first and second positions. The wastegate assembly further includes a washer coupled to at least one of the first and second valve shafts and axially spaced from the valve arm with respect to the first and second axes.

Abstract: In accordance with one aspect of the present disclosure, a turbocharger includes a compressor having a compressor wheel, a turbine provided within a housing, and an exhaust gas recirculation (EGR) flow path. The EGR flow path includes a first fluid connection in the housing and located in proximity to the turbine, a second fluid connection located in proximity to a trailing edge of the compressor wheel, an EGR control valve disposed between the first fluid connection and the second fluid connection, the EGR control valve configured to selectively operate the turbocharger in a low-heat mode having an EGR up to 50% and an operational mode having an EGR rate typically less than 35%.

Abstract: A torque transfer assembly includes an engine starter, an electric machine, a torque converter, and a disconnect clutch further defined as a mechanical clutch. The vehicle includes an internal combustion engine including an output shaft, and a transmission. The engine starter is adapted to be rotatably coupled to the output shaft for rotating the output shaft to start the internal combustion engine. The electric machine is adapted to be rotatably coupled to the transmission for delivering rotational torque to the transmission. The torque converter is rotatably coupled to the electric machine and adapted to be rotatably coupled to the transmission. The mechanical clutch is adapted to be rotatably coupled to the output shaft and the torque converter. The mechanical clutch is adapted to selectively rotatably couple the output shaft to the torque converter and is adapted to selectively rotatably decouple the output shaft from the torque converter.

Abstract: A valve assembly for controlling exhaust gas flow to a turbine housing interior of a dual volute turbocharger includes a first valve member, a valve shaft, and a second valve member. The first valve member is disposed about and extends along an axis between a first end and a second end and is movable between a first, a second, and a third position for controlling exhaust gas flow to the turbine housing interior. The first valve member defines a valve interior between the first and second ends. The valve shaft is partially disposed in the valve interior and is coupled to the first end of the first valve member. The second valve member has a base coupled to and disposed about the valve shaft and a projection extending from the base and about the shaft into the valve interior. The second valve member is movable between closed and open positions.

Abstract: The present invention is related to the housing (60) of an exhaust turbine (32) of a turbocharger comprising a first volute (61) and a second volute (62), each of the volutes (61,62) ending in respective first and second guide tongues (64,66). The gap between the first guide tongue (64) and turbine wheel is smaller than the gap between the second guide tongue (66) and turbine wheel. This tongue asymmetry allows for control of the pulse amplitude emitted when a blade of the turbine wheel passes by each respective tongue. Moreover, by increasing the wheel-to-tongue distance of only the second guide tongue (66) durability requirements can be met.

Abstract: A tensioner for tensioning a chain span which uses two pistons. The movement of the two pistons may be coupled together. The first piston provides damping to the chain span and a second piston provides variable, dominant and automatically adjusting spring force to the chain span. The tensioner automatically adjusts the mean tension force to keep the chain tension as low as possible without sacrificing chain control, significantly improving drive efficiency at new chain conditions and conditions with dynamic loads.

Abstract: A compressor for a charging device, and a charging device having a corresponding compressor. The compressor comprises a compressor housing having a compressor inlet and a compressor outlet, and a compressor wheel and an adjustment mechanism. The compressor wheel is arranged in the compressor housing and can be rotated along a compressor axis. The adjustment mechanism is arranged in front of the compressor wheel axially in the current direction and can be adjusted between a first position and a second position in order to change an inlet cross-section of the compressor inlet. As a result of the adjustability of the adjustment mechanism, the inlet cross-section can be changed between a maximum inlet cross-section and a reduced inlet cross-section. Here, the adjustment mechanism forms the reduced inlet cross-section in such a way that the reduced inlet cross-section is arranged eccentrically in relation to the compressor axis.

Abstract: A phaser which has three camshaft start positions at start-up during cranking before the engine can fire. By having three possible start positions of the phaser, there is an increase in flexibility of the cam position at startup during cranking. The three start positions can also be achieved in open loop, reducing the complexity of the control system needed at cranking.

Abstract: A hybrid-vehicle system includes an internal combustion engine configured to deliver a first rotational torque to a crankshaft. The first rotational torque is a maximum torque deliverable by the internal combustion engine. The hybrid-vehicle system also includes a transmission selectively rotatably coupled to the crankshaft, and an assembly including an electric machine rotatably coupled to the transmission and configured to deliver a second rotational torque directly to the transmission. The assembly also includes a one-way clutch configured to rotationally couple the crankshaft and the transmission. The assembly further includes a friction clutch moveable between an engaged state where the crankshaft and the transmission are rotationally coupled, and a disengaged state where the crankshaft and the transmission are rotationally decoupled. The friction clutch is further defined as a latching friction clutch.

Abstract: A method of forming a winding for an electric machine includes forming a plurality of conductors having a substantially identical wire form with a plurality of end turns joining a plurality of slot segments, defining a first portion of the plurality of conductors as first conductors, rotating a second portion of the plurality of conductors about a central axis to mirror the first conductors, defining the second portion of the plurality of conductors as second conductors, combining select ones of the first conductors and select ones of the second conductors to form conductor pairs, and combining a plurality of conductor pairs to form a multi-conductor winding.

Abstract: A method for determining rotor characteristic of an alternating current (AC) electrical machine includes obtaining a reference voltage signal, one or more phase currents, and rotor data. The method includes determining orthogonal components of an extended back electromotive force (BEMF) model of the AC electrical machine based on the reference voltage signal, the one or more phase current characteristics, and the rotor data. The method includes determining a product of the orthogonal components of the extended BEMF model. The method includes determining a squared-magnitude of the orthogonal components of the extended BEMF mode. The method includes determining the rotor characteristic of the AC electrical machine based on the product of the orthogonal components and the squared-magnitude of the orthogonal components.

Abstract: This invention relates to a compressor 100 for a supercharger 10. The compressor 100 comprises a compressor housing 110 with a compressor inlet 112 and a compressor outlet 114. The compressor 100 furthermore comprises an adjustment mechanism 200 and an actuator device 300. The adjustment mechanism 200 comprises an adjustment ring 210 and a plurality of shutter elements 220 for changing an inlet cross section 112a of the compressor inlet 112. The actuator device 300 comprises a drive unit 310 and a coupling unit 320. The actuator device 300 is thus coupled, via the coupling unit 320, to the adjustment mechanism 200 in order to move the adjustment mechanism 200 between a first position and a second position.

Abstract: A rotating machine includes a shaft, a first impeller wheel, and a second impeller wheel. The rotating machine also includes a first seal assembly including a first carbon ring disposed about the shaft, with the first carbon ring having a first carbon surface. The first seal assembly also includes a first mating ring disposed about the shaft, with the first mating ring having a first mating surface facing and configured to contact the first carbon surface. The rotating machine additionally includes a second seal assembly including a second carbon ring disposed about the shaft, with the second carbon ring having a second carbon surface. The second seal assembly also includes a second mating ring disposed about the shaft, with the second mating ring having a second mating ring surface facing and configured to contact the second carbon surface.

Abstract: A triple mass flywheel (104, 304, 504, 604) includes a first flywheel part (112, 312, 512, 612), a second flywheel part (114, 314, 514, 614), and a third flywheel part (116, 316, 516, 616) all arranged for rotation on an axis (118, 318). The triple mass flywheel (104, 304, 504, 604) also includes a first torsional damper (120, 320, 520, 620) connected to the first flywheel part (112, 312, 512, 612) and the second flywheel part (114, 314, 514, 614) and a second torsional damper (122, 322, 522, 622) connected to the second flywheel part (114, 314, 514, 614) and the third flywheel part (116, 316, 516, 616). The second flywheel part (114, 314, 514, 614) is driven by an electric motor (110, 310, 510, 610) to adjust the loading of the first torsional damper (120, 320, 520, 620) in relation to the first flywheel part 112, 312, 512, 612) and the second torsional damper (122, 322, 522, 622) in relation to the third flywheel part (116, 316, 516, 616).

Abstract: A permanently engaged starter system for use in a vehicle includes a flex plate. The vehicle includes a crankshaft and an engine block. The flex plate extends along and is rotatable about an axis. The flex plate is adapted to be rotatably coupled to the crankshaft. The permanently engaged starter system also includes a one-way clutch including an outer and inner race. The permanently engaged starter system additionally includes a ring gear rotatably coupled to one of the inner race and the outer race of the one-way clutch. The permanently engaged starter system further includes a starter support plate, and a pilot support plate coupled to the ring gear. The pilot support plate is fixedly coupled to the starter support plate and is configured to axially and radially align and retain the ring gear and one of the inner race and the outer race with respect to the axis.

Abstract: In accordance with one aspect of the present disclosure, a turbocharger having a rolling element bearing (REB) assembly contained within a bearing housing includes an axial damper configured to dampen and limit axial displacement of the REB assembly. The axial damper can include different embodiments, including an elastomeric axial damper, wire mesh, or oil film, for interrupting contact between the bearing assembly and a displacement limit when an axial displacement force exceeds a preload force. Further, the axial damper can include an apparatus having at least two axially compressible rings, where one of the axially compressible rings includes a displacement limit feature.

Abstract: Compressor for charging a combustion engine, comprising a compressor housing (1) with a volute (2), a compressor wheel (3) being arranged in the compressor housing (1), the compressor wheel (3) turning about an axis (A) and transporting gas into the volute (2), and an inlet channel (4), at least an end portion of the inlet channel (4) being oriented in the direction of the axis (A) in order to direct gas towards the compressor wheel in the axial direction, wherein an exhaust gas channel (5) terminates into the inlet channel (4) upstream of the compressor wheel (3), and wherein the exhaust gas channel (5) can be shut off by means of a valve (6), wherein a housing (8) of a driving device (7) of the valve (6) is integrally formed with the compressor housing (1).

Abstract: A turbomachine face seal includes a turbine wheel with a cylindrical shaft extending from the turbine wheel, defining an axis of rotation. The shaft may include a heat throttle, such as a piston ring and groove assembly, or a shaft weld pocket having an annular heat choke groove. Circumscribing the shaft is a casing and a seal ring having a groove with a seal element. To cool the seal element, a pressurized oil jet is directed toward the casing, and impinges against the casing. The oil jet may be angled or parallel with the axis of rotation. The casing may be configured to trap oil from the oil jet to cool the seal element.