| 摘要 |
The present invention relates to an insert (10, 110) for a cylinder sleeve (20, 120, 220) or for a cylinder (222) of an internal combustion engine (30, 130, 230) for reducing the diameter of the cylinder sleeve (20, 120, 220) or of the cylinder in the region (21, 221) of the upper dead center position of a piston (33, 233) guided into the cylinder sleeve (20, 120, 220) or the cylinder. According to the invention, the insert (10, 110) is in the form of an open, pretensioned ring with a ring joint (11, 111), and is held radially by its outwards acting radial forces and axially by a recess (121; 221) in the cylinder sleeve (20, 120, 220) or the cylinder (222) in such a way that the radial surface pressure around the circumference is approximately constant, wherein the ratio of the ring wall thickness (d) to the internal diameter (D) of the cylinder sleeve or the cylinder amounts to between 0.001 and 0.02. |
