Abstract: A method of assembling a resolver rotor to a hub of a transmission assembly is provided. The method includes: forming a generally axially extending groove in an outer surface of the hub, the groove extending at an assembly angle greater than 0 degrees relative to an axial direction from a hub end toward a hub base, the assembly angle being positive in a direction that is opposite to a rotation direction of the hub in use; forming a projection on an inner surface of the resolver rotor, the projection being configured to have an interference fit with the groove upon assembly; and assembling the resolver rotor onto the hub with the at least one projection traveling along and interfering with a portion of the at least one groove as the resolver rotor moves to a seated position toward the hub base. A transmission assembly is also provided.

Abstract: Apparatus and methods for producing ultrashort optical pulses are described. A high-power, solid-state, passively mode-locked laser can be manufactured in a compact module that can be incorporated into a portable instrument. The mode-locked laser can produce sub-50-ps optical pulses at a repetition rates between 200 MHz and 50 MHz, rates suitable for massively parallel data-acquisition. The optical pulses can be used to generate a reference clock signal for synchronizing data-acquisition and signal-processing electronics of the portable instrument.

Abstract: A method of forming a welded connection between a hub and a plate component in a transmission assembly is provided. The method includes providing the plate component which includes a radially extending portion and an opening in a connection region to the hub, forming a flare bevel with an axial extension that extends beyond a projection of a thickness of the radially extending portion of the plate component at the opening, locating the plate component with the flare bevel and at least a portion of the axial extension on the hub, welding in a recess formed between the flare bevel and the hub to connect the plate component to the hub with the weld, and removing at least a portion of the axial extension after the welding.

Abstract: A method of forming a welded connection between a hub and a plate component in a transmission assembly is provided. The method includes providing the plate component which includes a radially extending portion and an opening in a connection region to the hub, forming a flare bevel with an axial extension that extends beyond a projection of a thickness of the radially extending portion of the plate component at the opening, locating the plate component with the flare bevel and at least a portion of the axial extension on the hub, welding in a recess formed between the flare bevel and the hub to connect the plate component to the hub with the weld, and removing at least a portion of the axial extension after the welding.

Abstract: A method of assembling a resolver rotor to a hub of a transmission assembly is provided. The method includes: forming a generally axially extending groove in an outer surface of the hub, the groove extending at an assembly angle greater than 0 degrees relative to an axial direction from a hub end toward a hub base, the assembly angle being positive in a direction that is opposite to a rotation direction of the hub in use; forming a projection on an inner surface of the resolver rotor, the projection being configured to have an interference fit with the groove upon assembly; and assembling the resolver rotor onto the hub with the at least one projection traveling along and interfering with a portion of the at least one groove as the resolver rotor moves to a seated position toward the hub base. A transmission assembly is also provided.

Abstract: A hybrid powertrain includes a torque converter including an impeller, a turbine, and a stator, wherein the impeller is configured to receive torque from the engine input shaft without utilizing a torque converter cover or shell. The hybrid powertrain includes an electric machine including a rotor and motor stator, wherein the electrical machine is configured to transfer torque to a transmission input via the rotor.

Abstract: A hybrid powertrain includes a torque converter including an impeller, a turbine, and a stator, wherein the impeller is configured to receive torque from the engine input shaft without utilizing a torque converter cover or shell. The hybrid powertrain includes an electric machine including a rotor and motor stator, wherein the electrical machine is configured to transfer torque to a transmission input via the rotor.

Abstract: A torque converter is provided with a turbine hub with a pair of flow channels formed therein. In embodiments, the torque converter has a clutch piston configured to engage or disengage a disconnect clutch. On one side of the clutch piston is an apply chamber configured to receive fluid, wherein the fluid when subjected to pressure moves the clutch piston to engage the clutch. On the other side of the clutch piston can be a second fluid chamber, such as a circulation chamber or a release chamber. The turbine hub has a pair of flow channels formed therein, one that supplies fluid directly to the apply chamber, and one that supplies fluid directly to the second fluid chamber.

Abstract: A torque converter is provided with a turbine hub with a pair of flow channels formed therein. In embodiments, the torque converter has a clutch piston configured to engage or disengage a disconnect clutch. On one side of the clutch piston is an apply chamber configured to receive fluid, wherein the fluid when subjected to pressure moves the clutch piston to engage the clutch. On the other side of the clutch piston can be a second fluid chamber, such as a circulation chamber or a release chamber. The turbine hub has a pair of flow channels formed therein, one that supplies fluid directly to the apply chamber, and one that supplies fluid directly to the second fluid chamber.

Abstract: A method of forming a stator for a torque converter is provided. The method includes casting a stator casting to include a body and blades on an outer circumferential surface of the body. The body includes excess material at an axial surface thereof. The method also includes machining the excess material to balance the stator casting. A torque converter is also provided. The torque converter includes a turbine, an impeller and a stator axially between the turbine and the impeller. The stator includes a stator casting including a body and blades on an outer circumferential surface of the body. The body includes a material segment at an axial surface thereof.

Abstract: A torque converter, including an axis of rotation, a cover arranged to receive torque, an impeller including an impeller shell non-rotatably connected to the cover and, at least one impeller blade fixedly connected to the impeller shell, a turbine including a turbine shell and at least one turbine blade fixedly connected to the turbine shell, a stator axially disposed between the impeller and turbine shells and including at least one stator blade and a first core ring fixedly secured to the at least one impeller blade and, including at least one first flat annular surface facing the at least one turbine blade or a second core ring fixedly secured to the at least one turbine blade and, including at least one second flat annular surface facing the at least one impeller blade.

Abstract: A torque converter including: a cover arranged to receive torque from an engine; an impeller; a turbine; an output hub arranged to non-rotatably connect to an input shaft for a transmission; a lockup clutch including an axially displaceable piston plate and arranged to directly connect the cover to the output hub; and a seal system including a pilot portion including first and second channels and a secondary hub non-rotatably connected to the output hub and axially displaceable with respect to the output hub to control flow of pressurized fluid through the first and second channels, or non-rotatably connected to the pilot portion and axially displaceable with respect to the pilot portion to control flow of pressurized fluid through the first and second channels.

Abstract: A method of forming a stator for a torque converter is provided. The method includes casting a stator casting to include a body and blades on an outer circumferential surface of the body. The body includes excess material at an axial surface thereof. The method also includes machining the excess material to balance the stator casting. A torque converter is also provided. The torque converter includes a turbine, an impeller and a stator axially between the turbine and the impeller. The stator includes a stator casting including a body and blades on an outer circumferential surface of the body. The body includes a material segment at an axial surface thereof.

Abstract: A torque converter, including an axis of rotation, a cover arranged to receive torque, an impeller including an impeller shell non-rotatably connected to the cover and, at least one impeller blade fixedly connected to the impeller shell, a turbine including a turbine shell and at least one turbine blade fixedly connected to the turbine shell, a stator axially disposed between the impeller and turbine shells and including at least one stator blade and a first core ring fixedly secured to the at least one impeller blade and, including at least one first flat annular surface facing the at least one turbine blade or a second core ring fixedly secured to the at least one turbine blade and, including at least one second flat annular surface facing the at least one impeller blade.

Abstract: A cover arranged to receive torque from an engine; an impeller; a turbine; an output hub arranged to non-rotatably connect to an input shaft for a transmission; a lockup clutch including an axially displaceable piston plate and arranged to directly connect the cover to the output hub; and a seal system including a pilot portion including first and second channels and a secondary hub non-rotatably connected to the output hub and axially displaceable with respect to the output hub to control flow of pressurized fluid through the first and second channels, or non-rotatably connected to the pilot portion and axially displaceable with respect to the pilot portion to control flow of pressurized fluid through the first and second channels.

Abstract: A torque converter having an input means and an output means comprising a cover non-rotatably connected to the input means, an impeller having an impeller shell non-rotatably connected to the cover, the impeller having at least one blade fixedly secured to the impeller shell, a turbine having a turbine shell non-rotatably connected to the output means, the turbine having at least one blade fixedly secured to the turbine shell, and, a stator having an inner circumferential wall, an outer circumferential wall, and a splitter operatively arranged between the inner circumferential wall and the outer circumferential wall, the stator comprising a first radial section having at least one blade fixedly secured to the splitter and extending radially outward towards the outer circumferential wall, and, a second radial section arranged concentrically within the first radial section, the second radial section comprising at least one blade fixedly secured to the inner circumferential wall and extending radially towards th