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    Electric machine with forced convection-based rotor cooling of rotor magnets
    94.
    发明授权
    Electric machine with forced convection-based rotor cooling of rotor magnets 有权

    公开(公告)号：US11476733B2

    公开(公告)日：2022-10-18

    申请号：US16671732

    申请日：2019-11-01

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Farzad Samie ,  Alireza Fatemi ,  Derek F. Lahr ,  Erik B. Golm ,  Xiaofeng Yang

    IPC: H02K5/12 ,  H02K5/128 ,  H02K1/276 ,  H02K9/00

    Abstract: A rotary electric machine for use with coolant includes a stator and rotor assembly. The rotor assembly includes a rotor, rotor shaft, and first and second end rings. The rotor has inner and outer diameter surfaces and an embedded set of rotor magnets proximate the outer diameter surface. The shaft is connected to the rotor and defines a main coolant passage along an axis of rotation. Radial shaft coolant passages are in fluid communication with the main coolant passage. The end rings are positioned at opposing distal ends of the rotor. The shaft coolant passages direct the coolant into the rotor and/or the end rings such that the coolant flows axially through rotor cavities of the rotor and cools the rotor magnets via forced convection.

    Temperature control assembly for an electric machine
    97.
    发明授权
    Temperature control assembly for an electric machine 有权

    公开(公告)号：US11043875B2

    公开(公告)日：2021-06-22

    申请号：US16196379

    申请日：2018-11-20

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Alireza Fatemi ,  Xiaofeng Yang ,  Thomas W. Nehl ,  Farzad Samie ,  Srihari K. Gangaraj

    IPC: H02K9/197 ,  H02K5/20 ,  H02K1/20 ,  H02K9/19

    Abstract: An apparatus for cooling an electric machine includes a plurality of fluid channels disposed in a first surface that surrounds at least part of the electric machine. Each of the plurality of fluid channels defines a circumferential path in the first surface, including a first channel section extending at least substantially parallel to first and second circumferences defined by ends of the electric machine, and including a second channel section configured to direct a cooling fluid between a central region of the first surface and an end region of the first surface. The apparatus also includes an outer shell configured to surround the first surface and define a fluid tight chamber between the first surface and the outer shell, the outer shell having at least one inlet through which the cooling fluid is introduced into the chamber and at least one outlet from which the cooling fluid exits the volume.

    HYDRODYNAMIC TORQUE CONVERTERS WITH INTEGRATED ENGINE DISCONNECT DEVICES OF MOTOR VEHICLE POWERTRAINS
    98.
    发明申请
    HYDRODYNAMIC TORQUE CONVERTERS WITH INTEGRATED ENGINE DISCONNECT DEVICES OF MOTOR VEHICLE POWERTRAINS 有权

    公开(公告)号：US20210025490A1

    公开(公告)日：2021-01-28

    申请号：US16518119

    申请日：2019-07-22

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Dongxu Li ,  Chunhao J. Lee ,  Farzad Samie ,  Derek F. Lahr

    IPC: F16H61/14 ,  B60W20/10 ,  F16H31/00

    Abstract: Presented are torque converters with integrated engine disconnect devices, methods for making/using such torque converters, and electric-drive vehicles equipped with such torque converters. A torque converter (TC) assembly includes a TC housing that drivingly connects to an engine output member. A TC output member projects from the TC housing and drivingly connects to a transmission input member. A turbine with a bladed turbine shell is mounted on the TC output member and rotatable within the TC's internal fluid chamber. An impeller with a bladed impeller shell is juxtaposed with the turbine and rotatable within the fluid chamber. An engine disconnect device, which is disposed within the fluid chamber between the impeller shell and TC housing, drivingly couples the impeller to and, when desired, drivingly decouples the impeller from the TC housing and engine output member to thereby transfer torque and prevent torque transfer, respectively, between the engine and transmission.

    DRIVETRAIN FOR A HYBRID PROPULSION SYSTEM
    99.
    发明申请
    DRIVETRAIN FOR A HYBRID PROPULSION SYSTEM 审中-公开

    公开(公告)号：US20200290447A1

    公开(公告)日：2020-09-17

    申请号：US16299757

    申请日：2019-03-12

    Applicant: GM Global Technology Operations LLC

    Inventor： Farzad Samie ,  Derek F. Lahr ,  Joel R. Briggs

    IPC: B60K6/40 ,  F16D25/10 ,  B60K6/387 ,  B60K6/48

    Abstract: A drivetrain for a powertrain system is arranged to transfer mechanical power between an internal combustion engine, an electric machine and a driveline. The drivetrain includes a gearbox including an input member disposed on a first end, an output member disposed on a second end and an auxiliary geartrain including a first mechanical drive mechanism, a second mechanical drive mechanism, and an auxiliary driveshaft. The auxiliary driveshaft rotatably couples the first mechanical drive mechanism and the second mechanical drive mechanism. The electric machine includes a stator attached to the second end of the gearbox and annular to the output member of the gearbox. The second mechanical drive mechanism is rotatably coupled to the rotor of the electric machine. The first mechanical drive mechanism is rotatably coupled to the input member of the gearbox. The internal combustion engine is also coupled to the input member of the gearbox.

    Hybrid drivetrain
    100.
    发明授权
    Hybrid drivetrain 有权

    公开(公告)号：US10710449B2

    公开(公告)日：2020-07-14

    申请号：US15211681

    申请日：2016-07-15

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Farzad Samie ,  Derek F. Lahr ,  Peter Beller ,  Chunhao J. Lee

    IPC: B60K6/50 ,  B60K6/30 ,  B60K6/48 ,  B60K6/36 ,  B60K6/387 ,  F16H57/04 ,  F16H47/06

    Abstract: A geartrain for a powertrain system is disposed to transfer mechanical power between an internal combustion engine, an electric machine and a driveline. The geartrain includes a flywheel, a torque converter, an off-axis mechanical connection and a transmission gearbox. The off-axis mechanical connection includes a first element rotatably coupled to a second element. The flywheel is coupled to a crankshaft of the internal combustion engine. The torque converter includes a pump, a turbine and a pump hub, and the transmission gearbox includes an input member. The pump of the torque converter is coupled to the flywheel, and the pump hub is coupled to the first element of the off-axis mechanical connection. The second element of the off-axis mechanical connection is coupled to a rotor of the electric machine, and the turbine of the torque converter is coupled to the input member of the transmission gearbox.

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