| 主权项 |
1. An internal combustion engine, comprising:
a cylinder comprising a mid-stop formed in a side wall of the cylinder, The mid-stop comprising a first contact surface positioned between an upper section of the side wall and a lower section of the side wall, the upper section of the side wall having a greater diameter than the lower section of the side wall, the cylinder further comprising an undercut formed in the mid-stop and positioned between the first contact surface and the side wall, the undercut descending a depth below the first contact surface, the undercut extending from the mid-stop to the side wall, the undercut defining an open space in the mid-stop; a liner positioned within the cylinder, the liner comprising a seat having a second contact surface, wherein the second contact surface is supported on the first contact surface; and a retaining shim coupled to the liner, the retaining shim including a wear ring and a retaining ring coupled the wear ring, the wear ring configured to be positioned between the first contact surface of the mid-stop and the second contact surface of the seat of the liner, the retaining ring configured to be positioned between the liner and the lower section of the side wall. |
