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    Wet/dry cylinder liner for high output engines
    5.
    发明授权
    Wet/dry cylinder liner for high output engines 失效
    用于高输出发动机的湿/干缸套

    公开(公告)号：US4926801A

    公开(公告)日：1990-05-22

    申请号：US136400

    申请日：1987-12-22

    申请人： Eugene Eisenberg ,  Frederick E. Lindsay ,  James J. Evans ,  Ronald H. Collins

    发明人： Eugene Eisenberg ,  Frederick E. Lindsay ,  James J. Evans ,  Ronald H. Collins

    IPC分类号： F02F1/16

    CPC分类号： F02F1/16 ,  F02F1/163

    摘要： The cylinder liner of an internal combustion engine includes a wet-type upper portion and a dry-type lower portion. The interior wall of the cylinder and the corresponding lower portion of the liner are machined to have an interference fit under operating conditions. The liner is firmly supported by this interference fit engagement of the liner with the cylinder bore over approximately two-thirds the length of the liner. The cylinder wall is machined to provide a shoulder substantially at the junction of the upper and lower portions of the liner and a corresponding shoulder is formed at this point on the liner. These shoulders are forced into firm sealing engagement by the torque applied to the cylinder head screws during asssembly of the cylinder head on the engine block. The vertical dimension of the shoulder on the cylinder liner is formed to be a minimum of 1/8 of the vertical dimension of upper portion of the liner. The upper (wet) portion of the cylinder liner is formed to include alternate thinner and thicker portions, the thicker portions strengthening the liner in the wet area and enabling the overall thickness of this portion of the liner to be smaller than would otherwise be possible. Further, the shapes involved by this construction provide a plurality of parallel annular flow passages by which the cooling fluid is directed in parallel paths around the upper portion of each of the cylinders from one side of each cylinder to the other side thereof.

    摘要翻译： 内燃机的气缸套包括湿式上部和干式下部。 气缸的内壁和衬套的相应的下部被加工成在操作条件下具有过盈配合。 衬套通过衬套与缸孔的过盈配合接合牢固地支撑在衬套的长度的三分之二上。 圆筒壁被加工成基本上在衬套的上部和下部的接合处提供肩部，并且在该衬套上的这一点处形成相应的肩部。 在发动机缸体上的气缸盖的组装期间，通过施加到气缸盖螺钉的扭矩，这些肩部被迫牢固地密封接合。 气缸套上的肩部的垂直尺寸形成为衬套上部的垂直尺寸的1/8的最小值。 气缸套的上（湿）部分形成为包括相互更薄和更厚的部分，较厚的部分在湿润区域中加强衬垫，并且使得衬套的该部分的总体厚度能够小于否则可能的范围。 此外，这种结构涉及的形状提供了多个平行的环形流动通道，冷却流体通过该平行环形流动通道围绕每个气缸的上部从每个气缸的一侧到另一侧的平行路径。