| 摘要 |
A combustion engine has a cylinder liner with a top boss which is an interference fit in the block, and a midstop flange. The outer portion of the liner between the top boss and the midstop flange forms a wall of a coolant passage. A cylindrical inner portion of the liner is at least 30% of the length of the liner, and has a groove in the outer surface thereof adjacent to its bottom end. In the groove is a support ring which swells up under the influence of engine oil to contact a radial support section for the bottom end of the cylinder liner.
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