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    DAMPING COVERS FOR POWER INVERTER MODULES AND INTEGRATED POWER ELECTRONICS MODULES UTILIZING THE SAME
    11.
    发明申请
    DAMPING COVERS FOR POWER INVERTER MODULES AND INTEGRATED POWER ELECTRONICS MODULES UTILIZING THE SAME 有权

    公开(公告)号：US20210037665A1

    公开(公告)日：2021-02-04

    申请号：US16528848

    申请日：2019-08-01

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Qigui Wang ,  Song He ,  Seongchan Pack ,  Angela P. Willis

    IPC: H05K5/03 ,  G10K11/168 ,  B60R16/02 ,  B32B5/18 ,  B32B15/04 ,  B32B15/20

    Abstract: A damping cover for an integrated power electronics module (IPEM), the damping cover generally defined by a top side and a bottom side, wherein the bottom side is configured to mate adjacent with or contiguous to a power inverter module (PIM) of the IPEM. The damping cover can include an aluminum foam core including a top surface generally corresponding to the top side of the damping cover and a bottom surface generally corresponding to the bottom side of the damping cover and a polymeric over-molding or non-porous aluminum outer layer covering the top surface and/or a polymeric over-molding or non-porous aluminum outer layer covering the bottom surface. The bottom side of the damping cover can mate adjacent with or contiguous to the PIM. The polymeric material over-molding can completely impregnate the aluminum foam core. The aluminum foam core can have a density of about 0.15 g/cm3 to about 1.0 g/cm3.

    Throttle body with reduced deposit accumulation and enhanced thermal conductivity
    13.
    发明授权
    Throttle body with reduced deposit accumulation and enhanced thermal conductivity 有权

    公开(公告)号：US11946432B2

    公开(公告)日：2024-04-02

    申请号：US17815796

    申请日：2022-07-28

    Applicant: GM Global Technology Operations LLC

    Inventor： Seongchan Pack ,  Dean G. Sorrell

    IPC: F02D9/10 ,  F02B77/04

    CPC classification number: F02D9/1075 ,  F02B77/04 ,  F02D9/1005

    Abstract: A throttle body for an engine or fuel cell of a vehicle is provided. The throttle body comprises a cylindrical housing comprising a first open end extending to a second open end defining an inner wall having an inner surface. The throttle body further comprises a moveable blade valve movably disposed on the inner wall and arranged to regulate air to the engine during operation of the vehicle. The moveable blade valve has an outer surface. The throttle body further comprises a dual-phase thermal composite coating (TCC) disposed on one of the inner surface of the inner wall and outer surface of the moveable blade valve for enhanced thermal conductivity and reduced deposit accumulation on the inner surface and the outer surface. The dual-phase TCC comprises a first material comprising between 10 wt % and 90 wt %, and a second material comprising between 10 wt % and 90 wt % of the dual-phase TCC. The dual phase TCC has a contact angle of between 100° and 160° and a thermal conductivity of at least 0.3 W/mK.

    Gear assembly with optimized configuration for mesh stiffness
    15.
    发明授权
    Gear assembly with optimized configuration for mesh stiffness 有权

    公开(公告)号：US11300190B1

    公开(公告)日：2022-04-12

    申请号：US17036796

    申请日：2020-09-29

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Seongchan Pack ,  Mohammad Hotait

    IPC: F16H55/06 ,  F16H1/06

    Abstract: A gear assembly includes a first gear having a first hub surrounded by a first plurality of teeth. The first plurality of teeth each define a respective first contact region. The gear assembly includes a second gear having a second hub surrounded by a second plurality of teeth. The second plurality of teeth are adapted to mesh with the first plurality of teeth at the respective first contact region in order to drive a respective load in a first direction. The first hub and the first plurality of teeth include respective zones defining a respective elastic modulus. A three-dimensional distribution of the respective physical size and the respective elastic modulus of the respective zones is optimized such that a fluctuation of mesh stiffness along the respective first contact region is at or below a first predefined threshold.

    Damping covers for power inverter modules and integrated power electronics modules utilizing the same
    16.
    发明授权
    Damping covers for power inverter modules and integrated power electronics modules utilizing the same 有权

    公开(公告)号：US11116097B2

    公开(公告)日：2021-09-07

    申请号：US16528848

    申请日：2019-08-01

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Qigui Wang ,  Song He ,  Seongchan Pack ,  Angela P. Willis

    IPC: H05K5/03 ,  G10K11/168 ,  B60R16/02 ,  B32B5/18 ,  B32B15/04 ,  B32B15/20 ,  H05K7/20

    Abstract: A damping cover for an integrated power electronics module (IPEM), the damping cover generally defined by a top side and a bottom side, wherein the bottom side is configured to mate adjacent with or contiguous to a power inverter module (PIM) of the IPEM. The damping cover can include an aluminum foam core including a top surface generally corresponding to the top side of the damping cover and a bottom surface generally corresponding to the bottom side of the damping cover and a polymeric over-molding or non-porous aluminum outer layer covering the top surface and/or a polymeric over-molding or non-porous aluminum outer layer covering the bottom surface. The bottom side of the damping cover can mate adjacent with or contiguous to the PIM. The polymeric material over-molding can completely impregnate the aluminum foam core. The aluminum foam core can have a density of about 0.15 g/cm3 to about 1.0 g/cm3.

    COMPOSITE ARTICLE FOR MITIGATING NOISE, VIBRATION, AND HARSHNESS
    18.
    发明申请
    COMPOSITE ARTICLE FOR MITIGATING NOISE, VIBRATION, AND HARSHNESS 审中-公开

    公开(公告)号：US20200082803A1

    公开(公告)日：2020-03-12

    申请号：US16124926

    申请日：2018-09-07

    Applicant: GM Global Technology Operations LLC

    Inventor： Seongchan Pack ,  Su Jung Han ,  Martin S. Kramer

    IPC: G10K11/168 ,  B32B5/02 ,  B32B15/14 ,  B32B3/12 ,  B32B3/30

    Abstract: A composite article configured for mitigating noise, vibration, and harshness includes a substrate having a first stiffness. The composite article includes a structural film formed from a composition and disposed on the substrate in a pattern that is arranged to dampen a sound wave having a first frequency and a first amplitude and propagatable in a first direction to a second frequency that is less than the first frequency and a second amplitude that is less than the first amplitude. The composite article includes a coating layer disposed on the pattern and configured to dampen the sound wave in the first direction and in a second direction that is perpendicular to the first direction. The composite article has a second stiffness that is greater than the first stiffness. A method of forming the composite article is also described.

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