Unique block rib geometry for reducing liner distortion

    公开(公告)号:US11698042B2

    公开(公告)日:2023-07-11

    申请号:US17351438

    申请日:2021-06-18

    Applicant: Cummins Inc.

    CPC classification number: F02F7/0021 F02F1/004 F02F7/0065 F02F2001/008

    Abstract: An engine block includes one or more cylinder bores wherein each cylinder bore is surrounded by a cylinder bore wall. The cylinder bore wall includes a liner stop mechanism to locate a liner in the cylinder bore. The cylinder bore includes a mid-portion that spans between an upper end and a lower end, wherein the liner stop mechanism can be located near the upper end, near the lower end, or the mid-portion. The engine block has an outer cylinder block wall that is exterior to the cylinder bore wall. The outer cylinder block wall includes a first rib positioned above the liner stop mechanism and a second rib positioned below the liner stop mechanism relative to a cylindrical axis of the cylinder bore. The first and second ribs straddle the liner stop mechanism to reduce rotation and buckling of the liner during operation of the engine.

    PRESSURE RESERVOIR IN ROCKER SHAFT FOR ENGINE BRAKE

    公开(公告)号:US20220349323A1

    公开(公告)日:2022-11-03

    申请号:US17733537

    申请日:2022-04-29

    Applicant: Cummins Inc.

    Abstract: Disclosured herein are apparatus and methods relating to combustion engines. In an example, a combustion engine includes a head and a rocker assembly. The rocker assembly including: a rocker shaft including therein a pressure reservoir, a pedestal support adapted to be fastened to the head and sized and structured to support the rocker shaft, a rocker lever pivotally supported by the rocker shaft, and a hydraulic engine brake mechanism within the rocker lever including a hydraulic control valve configured to selectively actuate an exhaust valve of the combustion engine.

    BLOCK RIBS FOR REDUCING LINER DISTORTION

    公开(公告)号:US20210310439A1

    公开(公告)日:2021-10-07

    申请号:US17351639

    申请日:2021-06-18

    Applicant: Cummins Inc.

    Abstract: An engine block includes one or more cylinder bores at least partially surrounded by a cylinder bore wall. The cylinder bore wall includes a liner stop mechanism to support a liner in the cylinder bore. The engine block has an outer cylinder block wall that is exterior to the cylinder bore wall. The outer cylinder block wall includes at least one rib located relative to the liner stop mechanism to reduce rotation and buckling of the liner during operation of the engine.

    Block ribs for reducing liner distortion

    公开(公告)号:US11536222B2

    公开(公告)日:2022-12-27

    申请号:US17351639

    申请日:2021-06-18

    Applicant: Cummins Inc.

    Abstract: An engine block includes one or more cylinder bores at least partially surrounded by a cylinder bore wall. The cylinder bore wall includes a liner stop mechanism to support a liner in the cylinder bore. The engine block has an outer cylinder block wall that is exterior to the cylinder bore wall. The outer cylinder block wall includes at least one rib located relative to the liner stop mechanism to reduce rotation and buckling of the liner during operation of the engine.

    UNIQUE BLOCK RIB GEOMETRY FOR REDUCING LINER DISTORTION

    公开(公告)号:US20210324816A1

    公开(公告)日:2021-10-21

    申请号:US17351438

    申请日:2021-06-18

    Applicant: Cummins Inc.

    Abstract: An engine block includes one or more cylinder bores wherein each cylinder bore is surrounded by a cylinder bore wall. The cylinder bore wall includes a liner stop mechanism to locate a liner in the cylinder bore. The cylinder bore includes a mid-portion that spans between an upper end and a lower end, wherein the liner stop mechanism can be located near the upper end, near the lower end, or the mid-portion. The engine block has an outer cylinder block wall that is exterior to the cylinder bore wall. The outer cylinder block wall includes a first rib positioned above the liner stop mechanism and a second rib positioned below the liner stop mechanism relative to a cylindrical axis of the cylinder bore. The first and second ribs straddle the liner stop mechanism to reduce rotation and buckling of the liner during operation of the engine.

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