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    ADHESION OF THERMAL SPRAY USING COMPRESSION TECHNIQUE
    22.
    发明申请
    ADHESION OF THERMAL SPRAY USING COMPRESSION TECHNIQUE 审中-公开

    公开(公告)号：US20180045134A1

    公开(公告)日：2018-02-15

    申请号：US15233254

    申请日：2016-08-10

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Jianghuai Yang ,  Qigui Wang ,  Martin S Kramer ,  Dale A Gerard

    IPC: F02F1/00 ,  F02F7/00 ,  F02F1/18 ,  C23C4/12

    Abstract: An improved surface activation technique improves the adhesion of thermal spray coatings, which is useful for engine cylinder bores. The new method includes compressing the cylinder bore surface to create a surface profile on the surface, such as through rolling a roller along the surface. An engine block is also provided, which includes a plurality of cylinder bores, each cylinder bore having an inner surface, and each inner surface having a surface profile that includes a helical groove and other surface profiles formed in the inner surface. A thermal spray coating is formed on the inner surface of each cylinder bore, the thermal spray coating being adhered to the surface profile of the inner surface. A roller assembly for activating the surface is also provided.

    System and method of making a crankshaft with alternate materials
    27.
    发明授权
    System and method of making a crankshaft with alternate materials 有权

    公开(公告)号：US11619255B1

    公开(公告)日：2023-04-04

    申请号：US17698410

    申请日：2022-03-18

    Applicant: GM Global Technology Operations LLC

    Inventor： David C. Klemstine ,  Guirong Cao ,  Jianghuai Yang ,  William A. Berry ,  Qigui Wang ,  Anil K. Sachdev ,  Steven L. Burkholder

    IPC: F16C3/04 ,  B22D19/04 ,  F16C3/10 ,  F16C3/20

    Abstract: A crankshaft for an internal combustion engine is provided. The crankshaft comprises at least four main journals aligned on a crankshaft axis of rotation defining a centerline. The crankshaft further comprises at least three pin journals. Each pin journal is disposed about a respective pin journal axis and positioned between the main journals. Each of the pin journals is joined to a pair of crank arms. Each pair of crank arms is joined to a respective main journal. Each of the main journals, pin journals, and crank arms is made of a first metallic material. Each crank arm has an over-molded counterweight metallurgically bonded thereto. Each counterweight is disposed opposite a respective pin journal relative to the centerline for balance and stability. Each counterweight is made of a second metallic material. The crankshaft has a weight ratio of the second metallic material to the first metallic material of between 0.20 to 0.50.

    COATED CYLINDER LINER
    29.
    发明申请
    COATED CYLINDER LINER 有权

    公开(公告)号：US20210047981A1

    公开(公告)日：2021-02-18

    申请号：US16539269

    申请日：2019-08-13

    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC

    Inventor： Jianghuai Yang ,  Qigui Wang ,  Dale A. Gerard

    IPC: F02F1/10 ,  F02F1/00

    Abstract: A method of forming an engine component includes providing a cylinder liner main body having a curved interior wall forming a cylinder bore extending along a bore axis and a curved exterior wall formed circumferentially about the curved interior wall. The method includes disposing a coating layer onto the interior wall and the exterior wall. A cylinder liner is provided that includes a main body and a coating layer disposed on an exterior wall and on an interior wall of the main body.

    Surface texture providing improved thermal spray adhesion
    30.
    发明授权
    Surface texture providing improved thermal spray adhesion 有权

    公开(公告)号：US10106878B2

    公开(公告)日：2018-10-23

    申请号：US15184699

    申请日：2016-06-16

    Applicant: GM Global Technology Operations LLC

    Inventor： Zhe Li ,  Martin S. Kramer ,  Yucong Wang ,  Jianghuai Yang

    IPC: C23C4/02 ,  F02F1/00

    Abstract: An improved substrate surface texture i.e., roughness, significantly improves the adhesion of thermal spray coatings. The surface texture is defined by two metrology parameters and the invention comprehends a range of average roughness (Sa) between 9 and 15 μm and developed interfacial area ratio (Sdr) of greater than 100%. This surface texture is achieved by methods such as water jet erosion, mechanical roughening, laser texturing, chemical etching and plasma etching. The surface texture is especially beneficial for walls of cylinders of internal combustion engines, hydraulic cylinders and similar components to which a thermal spray coating is adhered and which are exposed to sliding or frictional wear.

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