Wear surface sleeve press fit onto a shaft in a high temperature air valve application

    公开(公告)号:US11994220B1

    公开(公告)日:2024-05-28

    申请号:US17984813

    申请日:2022-11-10

    CPC classification number: F16K1/224 B23P19/02

    Abstract: Air valves, such as wastegates, utilize a shaft that rotates within a bushing system. Conventional deposition processes limit the thickness of the wear material between the shaft and bushing system. Accordingly, embodiments disclosed herein utilize one or more coating sleeves that are press-fit onto the shaft. This enables a thicker layer of wear material to be applied to the shaft, thereby improving the longevity and durability of the air valve, while also simplifying the manufacturing process. Embodiments may also utilize one or more anti-rotation features, such as a dowel or axial protrusion, and/or may utilize snap ring(s) to prevent axial sliding of the coating sleeve(s).

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